| 1. |
- Diarbakerli, Elias, et al.
(författare)
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Swedish musculoskeletal researchers view on a collaborative network and future research priorities in Swedish healthcare
- 2024
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Ingår i: Musculoskeletal Care. - : John Wiley & Sons. - 1478-2189 .- 1557-0681. ; 22:1
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Tidskriftsartikel (refereegranskat)abstract
- Background: Musculoskeletal disorders (MSK) are a global burden causing significant suffering and economic impact. Systematic identification and targeting of research questions of highest interest for stakeholders can aid in improving MSK disorder knowledge and management.Objective: To obtain Swedish MSK researchers' opinions and views on a collaborative Swedish MSK network (SweMSK) and identify future research areas of importance for Swedish MSK research.Methods: A web-based survey was conducted July to September 2021 to collect data from 354 Swedish MSK researchers. The survey focused on the need, objectives, and structure of a SweMSK network and identified prioritised areas for future MSK research.Results: The study included 141 respondents, of which 82 were associate professors or professors. The majority (68%) supported the creation of a new musculoskeletal network. The most supported element was increased collaboration regarding nationwide and multicenter studies. Respondents recommended the creation of a homepage and the establishment of national work groups with different specific interests as the primary elements of a new network.Conclusion: The results demonstrated a need and desire for increased national research collaboration and the creation of a new musculoskeletal network. The high academic experience and active research participation of the respondents suggest the need for MSK disorder knowledge and management improvement in Sweden. Therefore, the SweMSK network may help facilitate effective collaboration and research efforts that can contribute to the advancement of MSK disorder management and care. This study may provide valuable insights for policymakers, clinicians, and researchers to improve MSK disorder care and management in Sweden.
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| 2. |
- Peolsson, Anneli, 1967-, et al.
(författare)
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Test position and reliability in measurements of dorsal neck muscle endurance
- 2007
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Ingår i: Advances in Physiotherapy. - : Informa UK Limited. - 1403-8196 .- 1651-1948. ; 9:4, s. 181-189
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Tidskriftsartikel (refereegranskat)abstract
- The aims of the study were to compare the relative electromyographic (EMG) activity of the extensor muscles at three different locations of the spine (cervical, thoracic and lumbar) during three different dorsal neck muscle endurance test procedures, in order to determine the procedure in which the dorsal neck muscles are maximally activated in asymptomatic individuals. The reliability for one of these test procedures was evaluated using an endurance test expressed in seconds in both healthy volunteers and patients with neck discomfort. Surface EMG activity of the spinal extensor muscles was acquired in three different locations during three different test procedures: the “extended neck lift”, and “straight neck lift” with light and heavy loads in 12 healthy volunteers. The “extended neck lift” was assessed for intra-rater reliability in 30 healthy volunteers and 10 patients with neck disorders and for inter-rater reliability in another 30 healthy volunteers and nine patients with neck disorders. EMG activation of the spinal extensor muscles was generally low. Only during the “extended neck lift” was there a slight tendency that cervical extensors were more activated compared with thoracic extensors. The reliability was good (ICC 0.80–0.94); however, the maximal intra-individual differences and the measurement error were large. The different test procedures used are comparable but there was a slight tendency for “the extended neck lift” to be a more selective measurement for the cervical extensors. The “extended neck lift” is reliable and could be appropriate for evaluating groups of patients.
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| 3. |
- Ardern, Clare, 1985-, et al.
(författare)
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What is the evidence to support a psychological component to rehabilitation programs after anterior cruciate ligament reconstruction?
- 2016
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Ingår i: Current Orthopaedic Practice. - : Wolters Kluwer. - 1940-7041. ; 27:3, s. 263-268
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Forskningsöversikt (refereegranskat)abstract
- One of the main indications for anterior cruciate ligament reconstruction is the athlete’s desire to return to his or her preinjury level of sports. Postoperative rehabilitation has a strong focus on recovery of the physical capabilities necessary to manage a return to sports. On average, athletes achieve good physical function after surgery, based on standard impairment-based and activity-based measures. Yet the return to sports rate is disappointingly low; only two in every three return to their preinjury level sport and only half of the athletes return to competitive sports after surgery. There are a range of factors, many of them nonmodifiable (e.g. age, sex, and preinjury level of competition), that affect returning to a specific sport. However, recent research has identified psychological factors as key influences on returning to sports after anterior cruciate ligament reconstruction. This is particularly important for clinicians given that these factors may be modifiable with appropriate intervention. However, they are not systematically discussed during standard postoperative rehabilitation. In this review, we examine the evidence for the effect of psychological factors on return to sport outcomes after anterior cruciate ligament reconstruction and provide a rationale for the inclusion of interventions that specifically and systematically affect these factors during postoperative rehabilitation.
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| 4. |
- Arundale, Amelia, et al.
(författare)
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Jump performance in male and female football players
- 2020
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Ingår i: Knee Surgery, Sports Traumatology, Arthroscopy. - : SPRINGER. - 0942-2056 .- 1433-7347. ; 28, s. 606-613
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Tidskriftsartikel (refereegranskat)abstract
- Purpose To examine differences between men and women football players in clinically feasible jumping measures. Methods Female football players (N=46, ages 16-25) were matched based on age, training frequency, and playing position with 46 male players. All players performed the tuck jump and drop vertical jump (DVJ). DVJ was assessed quantitatively for valgus knee motion and probability of a high peak knee abduction moment (pKAM), as well as sagittal plane hip, knee, and ankle angles, and qualitatively with visual assessment of the players knees upon landing; graded as good, reduced, or poor control. Result Women had higher total tuck jump scores (52) (more technique flaws), than men (3 +/- 2, Pamp;lt;0.01). The quantitative analysis of the DVJ found that men had greater asymmetries between limbs, but women landed bilaterally in more knee valgus (interaction P=0.04, main effect of sex P=0.02). There was no difference in pKAM (interaction n.s.). Women also landed in less hip flexion (P=0.01) and ankle dorsiflexion (P=0.01) than men. The qualitative DVJ analysis found that more women (48%) had poor knee control compared to men (11%, Pamp;lt;0.01). Conclusions The results indicate that women perform worse on the tuck jump assessment than men. The results support previous findings that women land in more knee valgus than men, but also found that men may have larger asymmetries in knee valgus. These results from clinically feasible measures provide some suggestions for clinicians to consider during ACL reconstruction rehabilitation to enhance performance.
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| 5. |
- Arundale, Amelia, 1965-, et al.
(författare)
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Jumping performance based on duration of rehabilitation in female football players after anterior cruciate ligament reconstruction
- 2019
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Ingår i: Knee Surgery, Sports Traumatology, Arthroscopy. - : Springer Berlin/Heidelberg. - 0942-2056 .- 1433-7347. ; 27:2, s. 556-563
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Tidskriftsartikel (refereegranskat)abstract
- PurposeTo determine if female football players who had longer durations of rehabilitation, measured in months, after anterior cruciate ligament reconstruction would have lower tuck jump scores (fewer technique flaws) and smaller asymmetries during drop vertical jump landing.MethodsOne-hundred-and-seventeen female football players, aged 16ￜ25 years, after primary unilateral ACL reconstruction (median 16 months, range 6ￜ39) were included. Athletes reported the duration of rehabilitation they performed after anterior cruciate ligament reconstruction. Athletes also performed the tuck jump and drop vertical jump tests. Outcome variables were: tuck jump score, frontal plane knee motion and probability of peak knee abduction moment during drop vertical jump landing.ResultsThere was no difference in tuck jump score based on duration of rehabilitation (n.s.). No interaction (n.s.), difference between limbs (n.s.), or duration of rehabilitation (n.s.) was found for peak knee abduction moment during drop vertical jump landing. No interaction (n.s.) or difference between limbs (n.s.) was found for frontal plane knee motion, but there was a difference based on duration of rehabilitation (P?=?0.01). Athletes with >?9 months of rehabilitation had more frontal plane knee motion (medial knee displacement) than athletes with ConclusionAs there was no difference in tuck jump score or peak knee abduction moment based on duration of rehabilitation, the results of this study press upon clinicians the importance of using objective measures to progress rehabilitation and clear athletes for return to sport, rather than time alone.
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| 6. |
- Bullock, Garrett S., et al.
(författare)
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Kinesiophobia, Knee Self-Efficacy, and Fear Avoidance Beliefs in People with ACL Injury: A Systematic Review and Meta-Analysis
- 2022
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Ingår i: Sports Medicine. - : ADIS INT LTD. - 0112-1642 .- 1179-2035. ; 52, s. 3001-3019
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Forskningsöversikt (refereegranskat)abstract
- Background To improve the understanding of the psychological impacts of anterior cruciate ligament (ACL) injury, a systematic review synthesizing the evidence on knee self-efficacy, fear avoidance beliefs and kinesiophobia following ACL injury is needed. Objective The aim of this systematic review was to investigate knee self-efficacy, fear avoidance beliefs and kinesiophobia following ACL injury, and compare these outcomes following management with rehabilitation alone, early and delayed ACL reconstruction (ACLR). Methods Seven databases were searched from inception to April 14, 2022. Articles were included if they assessed Tampa Scale of Kinesiophobia (TSK), Knee Self-Efficacy Scale (KSES), or Fear Avoidance Beliefs Questionnaire (FABQ). Risk of bias (RoB) was assessed using domain-based RoB tools (ROBINS-1, RoB 2, RoBANS), and GRADE-assessed certainty of evidence. Random-effects meta-analyses pooled outcomes, stratified by time post-injury (pre-operative, 3-6 months, 7-12 months, > 1-2 years, > 2-5 years, > 5 years). Results Seventy-three studies (70% high RoB) were included (study outcomes: TSK: 55; KSES: 22; FABQ: 5). Meta-analysis demonstrated worse kinesiophobia and self-efficacy pre-operatively (pooled mean [95% CI], TSK-11: 23.8 [22.2-25.3]; KSES: 5.0 [4.4-5.5]) compared with 3-6 months following ACLR (TSK-11: 19.6 [18.7-20.6]; KSES: 19.6 [18.6-20.6]). Meta-analysis suggests similar kinesiophobia > 3-6 months following early ACLR (19.8 [4.9]) versus delayed ACLR (17.2 [5.0]). Only one study assessed outcomes comparing ACLR with rehabilitation only. Conclusions Knee self-efficacy and kinesiophobia improved from pre-ACLR to 3-6 months following ACLR, with similar outcomes after 6 months. Since the overall evidence was weak, there is a need for high-quality observational and intervention studies focusing on psychological outcomes following ACL injury.
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| 7. |
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| 8. |
- Fältström, Anne, 1970-, et al.
(författare)
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Female Soccer Players With Anterior Cruciate Ligament Reconstruction Have a Higher Risk of New Knee Injuries and Quit Soccer to a Higher Degree Than Knee-Healthy Controls
- 2019
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Ingår i: American Journal of Sports Medicine. - : Sage Publications. - 0363-5465 .- 1552-3365. ; 47:1, s. 31-40
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Tidskriftsartikel (refereegranskat)abstract
- Background:Many patients with anterior cruciate ligament (ACL) reconstruction who return to sport suffer new ACL injuries or quit sports soon after returning.Purpose:To prospectively follow a cohort of female soccer players with primary unilateral ACL reconstruction and matched knee-healthy controls from the same soccer teams to compare (1) the rate of new traumatic and nontraumatic knee injuries and other injuries, (2) the proportion of players who quit soccer, and (3) player-reported activity level and satisfaction with activity level and knee function.Study Design:Cohort study; Level of evidence, 2.Methods:A total of 117 active female soccer players (mean ± SD age, 19.9 ± 2.5 years) 18.9 ± 8.7 months after ACL reconstruction and 119 knee-healthy female soccer players (19.5 ± 2.5 years) matched from the same teams were prospectively followed for 2 years for new knee injuries, other injuries, soccer playing level, activity level according to the Tegner Activity Scale, and satisfaction with activity level and knee function.Results:Players with ACL reconstruction had a higher rate of new ACL injuries (n = 29 vs 8; 19 vs 4 per 100 player years; rate ratio [RR], 4.82; 95% CI, 2.20-10.54; P < .001), other traumatic knee injuries (29 vs 16 per 100 player years; RR, 1.84; 95% CI, 1.16-2.93; P < .01), and nontraumatic knee injuries (33 vs 9 per 100 player years; RR, 3.62; 95% CI, 2.11-6.21; P < .001) as compared with controls. There was no difference in the rate of other (not knee) injuries (43 vs 48 per 100 player years; RR, 0.90; 95% CI, 0.65-1.23; P = .494). During the 2-year follow-up, 72 (62%) players with ACL reconstruction quit soccer, as opposed to 43 (36%) controls (P = .001). The median Tegner Activity Scale score decreased in both groups (P < .001) but more for the ACL-reconstructed group (P < .015).Conclusion:Female soccer players with ACL reconstruction had nearly a 5-fold-higher rate of new ACL injuries and a 2- to 4-fold-higher rate of other new knee injuries, quit soccer to a higher degree, and reduced their activity level to a greater extent as compared with knee-healthy controls.
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| 9. |
- Gustafsson, Kristin, 1976-, et al.
(författare)
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Health status of individuals referred to first-line intervention for hip and knee osteoarthritis compared with the general population: an observational register-based study
- 2021
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Ingår i: Bmj Open. - London, United Kingdom : BMJ. - 2044-6055. ; 11:9
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Tidskriftsartikel (refereegranskat)abstract
- Objectives To describe the prevalence of comorbidities in a population referred to standardised first-line intervention (patient education and exercise) for hip and knee osteoarthritis (OA), in comparison with the general population. Furthermore, we aimed to evaluate if eventual differences were associated with socioeconomic inequalities. Design Register-based study. Setting Primary healthcare, Sweden. Participants Individuals with hip and/or knee OA included in the Better Management for Patients with Osteoarthritis Register between 2008 and 2016 and and an age-matched, sex-matched and residence-matched reference cohort (1:3) from the general Swedish population. Outcome measures Comorbidities were identified with the RxRisk Index, the Elixhauser Comorbidity Index and the Charlson Comorbidity Index, and presented with descriptive statistics as (1) individual diseases, (2) disease categories and (3) scores for each index. The prevalence of comorbidities in the two populations was tested using logistic regression, with separate analyses for age groups and the most affected joint. We then adjusted the analyses for socioeconomic status. Results In this OA population, 85% had >= 1 comorbidity compared with 78% of the reference cohort (OR; 1.62 (95% CI 1.59 to 1.66)). Cardiovascular/blood diseases were the most common comorbidities in both populations (OA, 59%; reference, 54%), with OR; 1.22 (95% CI 1.20 to 1.24) for the OA population. Younger individuals with OA were more comorbid than their matched references overall, and population differences decreased with age (eg, >= 3 comorbidities, aged <= 45 years OR; 1.74 (95% CI 1.52 to 1.98), >= 81 years OR; 0.95 (95% CI 0.87 to 1.04)). Individuals with knee OA were more comorbid than those with hip OA overall. Adjustment for socioeconomic status did not change the estimates. Conclusion Comorbidities were more common among individuals with hip and knee OA than among matched references from the general population. The differences could not be explained by socioeconomic status.
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| 10. |
- Gustafsson, Kristin, 1976-
(författare)
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Hip and Knee Osteoarthritis : Who Are the Patients Referred to First-Line Intervention and What Happens to Them?
- 2023
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Background: First-line intervention to address osteoarthritis (OA) should include patient education, exercise therapy, and weight control if needed. Replacement surgery may be appropriate for patients who do not receive sufficient relief from non-surgical interventions. However, predicting the course of OA can be challenging. Some patients experience stable symptoms over time, while others may have a rapid increase in pain and functional impairment. This thesis aims to improve understanding of which patients are referred to first-line intervention for hip and knee OA and to identify factors that affect long-term outcomes in these patients.Methods: The thesis includes studies of patients with hip and knee OA referred to a standardized first-line intervention programme. Study A (papers I, II, IV, V) is a register-based observational study that uses the Swedish Osteoarthritis Register (SOAR) to identify an OA population (n = 72 069). Data from the SOAR was merged with data from the Swedish Arthroplasty Register, Statistics Sweden and the National Board of Health and Welfare. The study also includes a matched reference cohort (n = 216 207) from the general Swedish population for comparison. Papers I and II compare socioeconomic status (SES) and comorbidities of the OA population in the SOAR with the reference cohort. Study B (paper III) is a qualitative study involving 16 patients with hip and knee OA who expressed a desire for surgery at referral to first-line intervention. The study includes interviews regarding the patients’ perspectives on healthcare and self-management of OA. Paper IV examines the time to replacement surgery and prognostic factors for surgery in the OA population. Paper V identifies factors associated with poorer patient-reported outcomes 1 year after hip replacement surgery.Results: The OA population had higher SES and higher odds of having comorbidities than the reference cohort. The differences in comorbidities were greater in younger individuals and those with knee OA. Patients who expressed a desire for surgery before participating in first-line intervention described their perspectives on healthcare and self-management as a multifaceted picture of needs, expectations, and individual choices. Findings range from a passive approach towards managing the OA, described as a lack of control, a sense of being left alone by healthcare, having doubts and mistrusting the care provided, to a more active attitude manifested as a will to take control over the OA, instead of the OA taking control over the patient’s life. Of the patients registered in the SOAR, 46% with hip OA and 20% with knee OA were estimated to progress to replacement surgery within 5 years. The strongest prognostic factors were expressing a desire for surgery and having more severe OA symptoms. In addition, higher SES and the presence of comorbidities had an impact on the risk of progression to surgery. Among those who had undergone a hip replacement, 5%–11% showed poor patient-reported outcomes regarding pain, health-related quality of life, and satisfaction 1 year after surgery. Factors associated with poor outcomes were being older, classified as Charnley C (musculoskeletal comorbidities), or having several comorbidities, particularly depression.Conclusions: Higher SES in the OA population referred to first-line intervention than in the general population indicates that OA care in Sweden may not be equal. The higher prevalence of comorbidities in the OA population suggests that OA care should include improving overall health. Furthermore, first-line OA intervention should be tailored to each patient’s perspectives to achieve the lifestyle changes that the interventions strive to accomplish, especially in patients expressing a desire for surgery at referral. Patients with hip and knee OA differ in their progression to surgery. Those with hip OA tend to progress faster and undergo replacement surgery more often than those with knee OA. Expressing a desire for surgery and having severe OA symptoms are prognostic factors, but other non-OA-related factors play a significant role. However, a large proportion of patients with OA do not require surgery within 5 years after referral to first-line intervention, especially those with knee OA. Identifying depression at the stage of referral to first-line OA intervention would allow increased time to optimize treatments and may help improve patient-reported outcomes after surgery.
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| 11. |
- Gustafsson, Kristin, 1976-, et al.
(författare)
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Progression to arthroplasty surgery among patients with hip and knee osteoarthritis : a study from the Swedish BOA Register
- 2022
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Ingår i: The bone & joint journal. - London : British Editorial Society of Bone and Joint Surgery. - 2049-4408 .- 2049-4394. ; 104-B:7, s. 792-800
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Tidskriftsartikel (refereegranskat)abstract
- AIMS: The aim of this study was to estimate time to arthroplasty among patients with hip and knee osteoarthritis (OA), and to identify factors at enrolment to first-line intervention that are prognostic for progression to surgery. METHODS: In this longitudinal register-based observational study, we identified 72,069 patients with hip and knee OA in the Better Management of Patients with Osteoarthritis Register (BOA), who were referred for first-line OA intervention, between May 2008 and December 2016. Patients were followed until the first primary arthroplasty surgery before 31 December 2016, stratified into a hip and a knee OA cohort. Data were analyzed with Kaplan-Meier and multivariable-adjusted Cox regression. RESULTS: At five years, Kaplan-Meier estimates showed that 46% (95% confidence interval (CI) 44.6 to 46.9) of those with hip OA, and 20% (95% CI 19.7 to 21.0) of those with knee OA, had progressed to arthroplasty. The strongest prognostic factors were desire for surgery (hazard ratio (HR) hip 3.12 (95% CI 2.95 to 3.31), HR knee 2.72 (95% CI 2.55 to 2.90)), walking difficulties (HR hip 2.20 (95% CI 1.97 to 2.46), HR knee 1.95 (95% CI 1.73 to 2.20)), and frequent pain (HR hip 1.56 (95% CI 1.40 to 1.73), HR knee 1.77 (95% CI 1.58 to 2.00)). In hip OA, the probability of progression to surgery was lower among those with comorbidities (e.g. ≥ four conditions; HR 0.64 (95% CI 0.59 to 0.69)), with no detectable effects in the knee OA cohort. Instead, being overweight or obese increased the probability of OA progress in the knee cohort (HR 1.25 (95% CI 1.15 to 1.37)), but not among those with hip OA. CONCLUSION: Patients with hip OA progressed faster and to a greater extent to arthroplasty than patients with knee OA. Progression was strongly influenced by patients' desire for surgery and by factors related to severity of OA symptoms, but factors not directly related to OA symptoms are also of importance. However, a large proportion of patients with OA do not seem to require surgery within five years, especially among those with knee OA. Cite this article: Bone Joint J2022;104-B(7):792-800.
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| 12. |
- Gustafsson, Kristin, 1976-, et al.
(författare)
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Study protocol for an observational register-based study on health and risk factors in patients with hip and knee osteoarthritis
- 2018
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Ingår i: BMJ Open. - : BMJ. - 2044-6055. ; 8:10
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Tidskriftsartikel (refereegranskat)abstract
- Introduction Hip and knee osteoarthritis is a leading cause of disability worldwide. Currently, the course of deterioration in pain and physical functioning in individuals with osteoarthritis is difficult to predict. Factors such as socioeconomic status and comorbidity contribute to progression of osteoarthritis, but clear associations have not been established. There is a need for early identification of individuals with slow disease development and a good prognosis, and those that should be recommended for future joint replacement surgery. Methods and analysis This nationwide register-based study will use data for approximately 75 000 patients who sought and received core treatment for osteoarthritis in primary healthcare, and were registered in the Swedish population-based National Quality Register for Better Management of Patients with Osteoarthritis. These data will be merged with data for replacement surgery, socioeconomic factors, healthcare consumption and comorbidity from the Swedish Hip Arthroplasty Register, the Swedish Knee Arthroplasty Register, Statistics Sweden and the National Board of Health and Welfare, Sweden. The linkage will be performed using personal identity numbers that are unique to all citizens in Sweden. Ethics and dissemination The study was approved by the Regional Ethical Review Board in Gothenburg, Sweden (dnr 1059-16). The results from this study will be submitted to peer-reviewed journals and reported at suitable national and international meetings.
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| 13. |
- Gustafsson, Kristin, 1976-, et al.
(författare)
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What Factors Identified in Initial Osteoarthritis Management Are Associated With Poor Patient-reported Outcomes After THA? : A Register-based Study
- 2023
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Ingår i: Clinical Orthopaedics and Related Research. - : LIPPINCOTT WILLIAMS & WILKINS. - 0009-921X .- 1528-1132. ; 481:9, s. 1732-1742
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Tidskriftsartikel (refereegranskat)abstract
- BACKGROUND: Some patients report long-term pain or no improvement in health-related quality of life (HRQoL) or are dissatisfied after THA. However, factors associated with these poorer patient-reported outcomes after surgery are inconsistent and have typically been studied in the late phase of hip osteoarthritis (OA) among patients already eligible for surgery. Earlier identification of risk factors would provide time to address modifiable factors, helping to improve patients' pain, HRQoL, and satisfaction after surgery and reduce the burden on orthopaedic clinics by referring patients who are better prepared for surgery.QUESTIONS/PURPOSES: We analyzed data from patients with hip OA referred to a first-line OA intervention program in primary healthcare at a stage when they had not been referred for THA, and asked: (1) What percentage of patients who proceed to THA report lack of improvement in pain, lack of improvement in HRQoL as measured by the EQ-5D, or are not satisfied with surgery 1 year after THA? (2) What associations exist between baseline factors at referral to this first-line OA intervention program and these poorer patient-reported outcomes 1 year after THA?METHODS: We included 3411 patients with hip OA (mean age 67 ± 9 years, 63% [2160 of 3411] women) who had been referred for first-line OA interventions between 2008 and 2015 and subsequently underwent THA for OA. All patients were initially identified through the Swedish Osteoarthritis Register, which follows and evaluates patients in a standardized national first-line OA intervention program. Then, we identified those who were also registered in the Swedish Arthroplasty Register with a THA during the study period. We included only those with complete patient-reported outcome measures for pain, HRQoL, and satisfaction preoperatively and 1-year postoperatively, representing 78% (3411 of 4368) of patients, who had the same baseline characteristics as nonrespondents. Multiple logistic regression was used to assess the associations between 14 baseline factors and the aforementioned patient-reported outcomes of pain, HRQoL, and satisfaction 1 year after THA, adjusted for all included factors.RESULTS: Five percent (156 of 3411) of the study population lacked improvement in pain, 11% (385 of 3411) reported no improvement in HRQoL, and 10% (339 of 3411) reported they were not satisfied with surgery 1 year after THA. Charnley Class C (multiple-joint OA or another condition that affects the ability to walk) was associated with all outcomes: lack of improvement in pain (OR 1.84 [95% CI 1.24 to 2.71]; p = 0.002), lack of improvement in HRQoL (OR 1.83 [95% CI 1.42 to 2.36]; p < 0.001), and not being satisfied (OR 1.40 [95% CI 1.07 to 1.82]; p = 0.01). Older age was associated with a lack of improvement in pain (OR per year 1.03 [95% CI 1.01 to 1.05]; p = 0.02), lack of improvement in HRQoL (OR per year 1.04 [95% CI 1.03 to 1.06]; p < 0.001), and not being satisfied (OR per year 1.03 [95% CI 1.01 to 1.05]; p < 0.001). Depression was associated with a lack of improvement in pain (OR 1.54 [95% CI 1.00 to 2.35]; p = 0.050) and with not being satisfied (OR 1.50 [95% CI 1.11 to 2.04]; p = 0.01) but not with a lack of improvement in HRQoL (OR 1.04 [95% CI 0.76 to 1.43]; p = 0.79). Having four or more comorbidities was associated with a lack of improvement in HRQoL (OR 2.08 [95% CI 1.39 to 3.10]; p < 0.001) but not with a lack of improvement in pain and not being satisfied.CONCLUSION: The results of this study showed that older age, Charley Class C, and depression in patients with first-line OA interventions were risk factors associated with poorer outcomes regarding pain, HRQoL, and satisfaction after THA. Screening patients with hip OA for depression early in the disease course would provide increased time to optimize treatments and may contribute to better patient-reported pain, HRQoL, and satisfaction after future THA. Further research should focus on identifying the optimal time for surgery in patients with depression, as well as what targeted interventions for depression can improve outcome of surgery in these patients.LEVEL OF EVIDENCE: Level III, therapeutic study.
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| 14. |
- Kvist, Joanna, 1967-, et al.
(författare)
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Anterior positioning of tibia during motion after anterior cruciate ligament injury
- 2001
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Ingår i: Medicine & Science in Sports & Exercise. - 0195-9131 .- 1530-0315. ; 33:7, s. 1063-1072
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Tidskriftsartikel (refereegranskat)abstract
- PURPOSE: The purpose of this study was to describe the sagittal tibial translation and EMG activity of muscles v. medialis and lateralis, gastrocnemius, and hamstrings, during common locomotion, in patients with an anterior cruciate ligament deficiency (ACL-def) and uninjured controls.METHODS: In 12 ACL-def patients and 17 controls, sagittal tibial translation was registered with the CA-4000 electrogoniometer during level walking, cutting, and stair walking. Tibial position at each flexion angle was expressed relative to the femuro-tibial position at passive knee extension. EMG activity, measured with ME-4000, was normalized to the individual maximum isometric voluntary contraction for each muscle.RESULTS: During the weight-bearing phase of motion, the tibia was anteriorly positioned in all legs. In the injured leg, the tibia translated more rapidly to an anterior position that was maintained for a longer time during the gait cycle. In the noninjured knees, motions with increased load lead to an increased anterior tibial translation in contrast to the injured knees, where the maximum displacement was already reached during level walking. The quadriceps and gastrocnemius muscles were simultaneously active during stance phase. Hamstrings were mainly active when the knee was close to extension and translation increased in spite of this activity.CONCLUSIONS: The mechanism of the anterior positioning of tibia is qualitatively similar in the normal and the injured knee, but that position is obtained much further forward in the ACL deficient knee. Quadriceps and gastrocnemius muscles seem to work synergistically to stabilize the knee by maintaining the anterior position of tibia during weight-bearing motion. The role of hamstrings to restrict anterior translation is questioned.
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| 15. |
- Kvist, Joanna, 1967-, et al.
(författare)
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Anterior tibial translation during different isokinetic quadriceps torque in anterior cruciate ligament deficient and nonimpaired individuals
- 2001
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Ingår i: Journal of Orthopaedic and Sports Physical Therapy. - 0190-6011 .- 1938-1344. ; 31:1, s. 4-15
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Tidskriftsartikel (refereegranskat)abstract
- Study Design: Factorial quasi-experimental design.Objectives: To quantify the effect of different levels of isokinetic concentric and eccentric knee extensor torques on the anterior tibial translation in subjects with anterior cruciate ligament (ACL) deficiency. Electromyogram (EMG) activity of 4 leg muscles was recorded in order to detect any co-activation of extensors and flexors.Background: The rehabilitation after an ACL injury is of importance for the functional outcome of the patient. In order to construct a rehabilitation program after that injury, it is important to understand the in vivo relationships between muscle force and tibial translation.Methods and Measures: Twelve patients with unilateral ACL injury and 11 uninjured volunteers performed 36 repetitions of a quadriceps contraction at different isokinetic concentric and eccentric torque levels, on a KinCom machine (60°•s-1), with simultaneous recordings of tibial translation (CA-4000) and EMG activity from quadriceps and hamstrings muscles. Tibial translations and EMG levels were normalized to the maximum of each subject.Results: The individual anterior tibial translation increased with increased quadriceps torque in a similar manner in both quadriceps contraction modes in all legs tested. During concentric mode, translation was similar in all groups, but during eccentric mode, the mean translation was 38% larger in the ACL injured knees. No quadriceps-hamstrings co-activation occurred in any test or group.Conclusions: An ACL deficient knee can limit the translation within a normal space during concentric muscle activity but not during eccentric activity. That limitation depends on other mechanisms than hamstrings co-activation.
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| 16. |
- Kvist, Joanna, 1967-, et al.
(författare)
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Anterior tibial translation during eccentric, isokinetic quadriceps work in healthy subjects
- 1999
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Ingår i: Scandinavian Journal of Medicine and Science in Sports. - : Wiley. - 0905-7188 .- 1600-0838. ; 9:4, s. 189-194
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Tidskriftsartikel (refereegranskat)abstract
- The effect of increasing isokinetic, eccentric quadriceps torques on sagittal translation of the tibia was examined in six healthy volunteers and compared to the translation at 20° of knee flexion during a drawer test with 90 N force. The tibial translation increased in a linear fashion with a mean of 0.5 mm per 20% torque increase. In 20° of knee flexion, 10% of eccentric quadriceps peak torque consumed 80% of the anterior tibial translation induced by the 90 N Lachman test while eccentric quadriceps peak torque utilized 100% of the translation at the same test. The in vivo relation between muscle force and tibial translation is of importance in the treatment of patients with injury to the cruciate ligaments. The results indicate that an already low eccentric quadriceps torque causes a tibial translation that reaches the limit of the passive knee joint displacement where strain is assumed to develop in the anterior cruciate ligament. Already low eccentric quadriceps torque levels may therefore be harmful during rehabilitation after anterior cruciate ligament surgery.
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| 17. |
- Kvist, Joanna, 1967-, et al.
(författare)
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Changes in knee motion pattern after anterior cruciate ligament injury - A case report
- 2007
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Ingår i: Clinical Biomechanics. - : Pergamon Press. - 0268-0033 .- 1879-1271. ; 22:5, s. 551-556
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Tidskriftsartikel (refereegranskat)abstract
- Background: After an anterior cruciate ligament injury, the contra-lateral non-injured leg has been found to adapt towards the injured leg. Accordingly, in order to study changes in knee motion pattern after an anterior cruciate ligament injury, the ideal is to compare the same leg prior to and after the injury. However, this is very seldom possible. The purpose of the present study was to describe changes in static and dynamic sagittal tibial translation, electromyographic activity and muscle torque relevant to an anterior cruciate ligament tear in one patient evaluated both before and after the injury.Methods: A male soccer player was examined 11 weeks before and eight weeks after an anterior cruciate ligament injury. Sagittal tibial translation was measured with the CA-4000 electrogoniometer, statically during Lachman's test, and dynamically during isokinetic muscle testing, one-legged squat and level walking. The electromyographic activity of mm. quadriceps and hamstrings, was registered simultaneously during the one-legged squat test.Findings: Static tibial translation was increased by ∼2 mm, while dynamic tibial translation was decreased by 0.4 mm at isokinetic testing, 0.9 mm at one-legged squat and 2.4 mm during level walking compared to before the injury. Muscle torque decreased 30% and 35% for the quadriceps and the hamstrings muscle, respectively. The electromyographic activity revealed similar activation levels in quadriceps and a doubled level of activation in hamstring compared to before the injury.Interpretation: In spite of an increase in static tibial translation eight weeks after an anterior cruciate ligament injury, the tibial translation decreased during activity, thus indicating that the patient could stiffen the knee in order to protect it against increased shear forces.
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| 18. |
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| 19. |
- Kvist, Joanna, 1967-, et al.
(författare)
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Fear of re-injury : A hindrance for returning to sports after anterior cruciate ligament reconstruction
- 2005
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Ingår i: Knee Surgery, Sports Traumatology, Arthroscopy. - : Springer Science and Business Media LLC. - 0942-2056 .- 1433-7347. ; 13:5, s. 393-397
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Tidskriftsartikel (refereegranskat)abstract
- Unrestricted participation in sports activities and return to the pre-injury level is often reported as an indicator of the success of ACL reconstruction. The athletes' choice not to return to their pre-injury level may depend on the knee function, but some times, social reasons or psychological hindrances such as fear of re-injury may influence their return to sports. The aim of this study was to investigate whether fear of re-injury due to movement is of significance for returning to previous level of activity in patients who have undergone anterior cruciate ligament reconstruction. The Tampa Scale of Kinesiophobia (TSK), the Knee Injury and Osteoarthritis Outcome Score (KOOS) and some general questions were mailed to 87 patients who underwent ACL reconstruction 3-4 years before the study was conducted. Sixty-two patients (74%) answered the questionnaires (34 men and 28 women). Fifty-three percent of the patients returned to their pre-injury activity level. The patients who did not return to their pre-injury activity level had more fear of re-injury, which was reflected in the TSK. In addition, high fear of re-injury was correlated with low knee-related quality of life. Fear of re-injury must be considered in the rehabilitation and evaluation of the effects of an ACL reconstruction. © Springer-Verlag 2005.
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| 20. |
- Kvist, Joanna, 1967-, et al.
(författare)
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Gender differences in post-exercise sagittal knee translation : A comparison between elite volleyball players and swimmers
- 2006
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Ingår i: Knee (Oxford). - : Elsevier BV. - 0968-0160 .- 1873-5800. ; 13:2, s. 132-136
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Tidskriftsartikel (refereegranskat)abstract
- Background: There is an increased risk for anterior cruciate ligament injury during the last part of a match or training session and one reason for that could be a post-exercise increase in tibial translation. Purpose: To investigate if sagittal tibial translation is affected after a workout session in volleyball or swimming in elite athletes. In addition, gender differences in sagittal tibial translation after the workout session were investigated. Method: Thirty-one elite volleyball players (16 male) and 33 elite swimmers (15 male) participated in this study. Measurements of total tibial translation were taken before and after a workout session in either volleyball or swimming with the use of a KT-1000 arthrometer. Results: Total tibial translation increased by 1.1 mm (SD 1.9) in the group consisting of both male and female volleyball players (p = 0.003) and remained unchanged in the swimmers. Male athletes increased their tibial translation with 1.8 mm (SD 1.8) and 0.6 mm (SD 1.1) in the two sports, respectively, while the tibial translation did not increase in the female athletes. Conclusion: Impact sports such as volleyball training leads to a post-exercise increase in tibial translation in male athletes. The increase in tibial translation in swimmers, that is a non-impact sport, was small and may not be clinically significant for the functional stability of the joint. It has been shown that female athletes have an increased risk for injury. Our results show no support for an increase in tibial translation being an important factor for this increased risk, and suggest that the difference between males and females in this regard should be sought elsewhere. © 2006 Elsevier B.V. All rights reserved.
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| 21. |
- Kvist, Joanna, 1967-, et al.
(författare)
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Natural corollaries and recovery after acute ACL injury : The NACOX cohort study protocol
- 2018
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Ingår i: BMJ Open. - : BMJ. - 2044-6055. ; 8:6
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Tidskriftsartikel (refereegranskat)abstract
- Introduction Anterior cruciate ligament (ACL) injury can result in joint instability, decreased functional performance, reduced physical activity and quality of life and an increased risk for post-traumatic osteoarthritis. Despite the development of new treatment techniques and extensive research, the complex and multifaceted nature of ACL injury and its consequences are yet to be fully understood. The overall aim of the NACOX study is to evaluate the natural corollaries and recovery after an ACL injury. Methods and analysis The NACOX study is a multicentre prospective prognostic cohort study of patients with acute ACL injury. At seven sites in Sweden, we will include patients aged 15-40 years, within 6 weeks after primary ACL injury. Patients will complete questionnaires at multiple occasions over the 3 years following injury or the 3 years following ACL reconstruction (for participants who have surgical treatment). In addition, a subgroup of 130 patients will be followed with clinical examinations, several imaging modalities and biological samples. Data analyses will be specific to each aim. Ethics and dissemination This study has been approved by the regional Ethical committee in Linköping, Sweden (Dnr 2016/44-31 and 2017/221-32). We plan to present the results at national and international conferences and in peer-reviewed scientific journals. Participants will receive a short summary of the results following completion of the study. Trial registration number NCT02931084.
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| 22. |
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| 23. |
- Kvist, Joanna, 1967-
(författare)
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Sagittal plane knee motion during activity in the anterior cruciate ligament deficient knee
- 2000
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Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- A complete rupture of the anterior cruciate ligament (ACL) results in static and often in functional instability. After an ACL-injury, most patients have to decrease their activity level, while some can cope with their injury and manage to keep a high activity level. A better tmderstanding of the influence of muscle activation and external load on the non-injured and injured knee, but also of the adaptive motion strategies employed by the patients with an unstable knee, is of importance for the construction of rehabilitation programs.The general purpose of this thesis was to study certain knee motions during activities focused on rehabilitation, in individuals with anterior cmciate ligament injury and uninjured controls. The sagittal tibial translation and knee flexion angle were registered during motion with the CA-4000 computerized electrogoniometer and EMG was used for analysis of muscle activity. The injured knee had increased static laxity compared to the contralateral non-injured knee and the non-impaired group.The amount of tibial translation increased with increased quadriceps torque during nonweight bearing activities (isokinetic and isotonic contractions). In the non-injured knees, the restraining mechanism was engaged above 50% of isokinetic concentric quadriceps torque and during the eccentric contractions already at low quadriceps torques (<10% of maximum). The motion pattern was similar in the injured knees and the amount of individual translation was larger during the eccentric contractions, compared to the non-injured knees.During weight bearing, tibia translated anteriorly and remained in that position. In the non-injured knee, different loads and performance of weight bearing activities produced different amount of translation. Level walking and squat with the center of gravity behind the feet produced somewhat smaller amount of translations, while other weight bearing activities produced similar amount of translation compared to the non-weight bearing isotonic knee extension. In the injured knee, all weight bearing activities produced similar amount of translation, smaller compared to the non-weight bearing isotonic knee extension.Quadriceps - hamstrings co-activation was not present during non-weight bearing quadriceps dominant activities and therefore, it was not shown to be a factor limiting anterior tibial translation. Also, during the weight bearing activities, hamstrings eo-contraction could not limit the anterior tibial translation. Quadriceps and gastrocnemius seems to work synergistically to stabilize the knee by maintaining an anterior position of tibia.In the injured knee, isokinetic concentric quadriceps contraction below 50% of maximum torque produced the smallest amount of tibial translation. Weight bearing exercises produced similar ammmt of translation despite of load and performance, indicating that when level walking is allowed after an injury, other weight bearing activities can be performed without increasing the amount of translation. Eccentric isokinetic quadriceps contractions above 50% of maximum torque and isotonic quadriceps exercise with and without weights at flexion angles less that 40°, should be avoided in order protect the knee joint.
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| 24. |
- Kvist, Joanna, 1967-
(författare)
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Sagittal plane knee motion in the ACL-deficient knee during body weight shift exercises on different support surfaces
- 2006
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Ingår i: Journal of Orthopaedic and Sports Physical Therapy. - : Journal of Orthopaedic & Sports Physical Therapy (JOSPT). - 0190-6011 .- 1938-1344. ; 36:12, s. 954-962
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Tidskriftsartikel (refereegranskat)abstract
- Study design: Experimental design with group comparisons. Objectives: To compare anterior tibial translation and muscle activity among different exercises for early weight-bearing and neuromuscular training in individuals with a unilateral anterior cruciate ligament (ACL) injury and in uninjured controls. Background: The effects of exercise and activity on tibial translation must be taken into consideration during rehabilitation after ACL injury. Methods and Measures: Twelve patients with an ACL-deficient knee and 12 age- and gender-matched controls participated in the study. Sagittal tibial translation and muscle activity were registered during the Lachman test (static translation) and 4 body weight shift exercises (dynamic translation). A Student t test with Bonferroni correction and analysis of variance were used for the statistical analysis. Results: Forward-backward body weight shift exercise resulted in smaller anterior tibial translation compared to body weight shift from side to side. Analysis of EMG activity could not explain this difference in anterior tibial translation. The amount of anterior tibial translation or EMG activity did not change when the exercises were performed on a trampoline compared to a firm surface. Conclusions: Forward-backward weight shifting may be preferable in initial rehabilitation after ACL injury compared to body weight shift from side to side.
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| 25. |
- Kvist, Joanna, 1967-, et al.
(författare)
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Sagittal Plane Knee Translation and Electromyographic Activity During Closed and Open Kinetic Chain Exercises in Anterior Cruciate Ligament-Deficient Patients and Control Subjects
- 2001
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Ingår i: American Journal of Sports Medicine. - 0363-5465 .- 1552-3365. ; 29:1, s. 72-82
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Tidskriftsartikel (refereegranskat)abstract
- Using electrogoniometry and electromyography, we measured tibial translation and muscle activation in 12 patients with unilateral anterior cruciate ligament injury and in 12 control subjects. Measurements were made during an active extension exercise with 0-, 4-, and 8-kg weights and during squats on two legs and on one leg where the projection of the center of gravity was placed over, behind, and in front the feet. In the uninjured subjects, tibial translation increased with increasing load except during the squat with the center of gravity behind the feet, which produced the smallest translation. For the active extension exercises, translation was greater during eccentric activity. In the anterior cruciate ligament-injured knees, all squats resulted in similar translation, which was smaller than that during the active extension exercise. The highest muscle activation was seen during squats. Hamstring muscle activity was low. Increased static laxity in the anterior cruciate ligament-deficient knee can be controlled during closed but not during open kinetic chain exercises. Coactivation of the quadriceps and gastrocnemius muscles seems to be important for knee stability, whereas hamstring muscle coactivation was insignificant. To minimize sagittal translation during nonoperative management of anterior cruciate ligament-deficient knees, closed kinetic chain exercises are preferable to open kinetic chain exercises, and importance should be attached to the spontaneous coactivation of the quadriceps and gastrocnemius muscles.
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