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- Pauelsen, Mascha, et al.
(author)
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Concussion in ice hockey : A Cohort Study Across 29 Seasons
- 2017
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In: Clinical Journal of Sports Medicine. - : Wolters Kluwer. - 1050-642X .- 1536-3724. ; 27:3, s. 283-287
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Journal article (peer-reviewed)abstract
- Objective: The aim of this study was to analyse the concussion incidence rate ratios (IRR) across 29 seasons in a Swedish Hockey League team.Design: Cohort study over 29 seasons within one Swedish elite series ice hockey team. Participants: All players who were part of one Swedish elite ice hockey team during the research period gave consent for participation in the study.Independent Variables: Exposure to top level Swedish ice hockey. Main Outcome Measures: Incidence rate ratio for concussion as well as rehabilitation periods due to concussion were calculated and analysed.Results: During the research period, 267 players in total were part of the team. A total of 1638 traumatic injuries were registered of which 162 were concussions. Incidence rates ranged from 0/1,000 games during the first season to 118/1,000 games for the final recorded season. The incidence rate ratio was 1.06 (CI = 1.03-1.10) for the entire research period. A shift towards longer rehabilitation periods was discovered.Conclusions: This study showed a significant increase of concussion incidence rate and a trend towards longer rehabilitation periods due to concussion. Possible risk factors were discussed. Risk behaviour and rehabilitation protocols should be prioritized areas in the research of concussion in ice hockey.
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| 3. |
- Abrahamson, Josefin, et al.
(author)
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High prevalence of former elite ice hockey players requiring early hip arthroplasty surgery
- 2024
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In: Journal of Hip Preservation Surgery (JHPS). - : Oxford Univ Press. - 2054-8397.
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Journal article (peer-reviewed)abstract
- The high-impact nature of ice hockey puts the players at a higher risk of developing early hip osteoarthritis (OA). This study aims to evaluate the presence of cam morphology, early radiological findings of OA and total hip arthroplasty (THA) in former Swedish elite ice hockey players. Male elite ice hockey players in the highest league in Sweden seeking orthopedic consultation for hip and groin pain with restricted hip joint range of motion and subsequent radiographs (Antero/posterior view, Lauenstein view and/or Hip frontal view) were included. The radiographs were performed between 1988 and 2009 and retrospectively examined for the presence of cam morphology (evaluated by alpha-angle >= 60 degrees) and hip OA (evaluated by Tonnis classification). All players were contacted between 11 and 33 years after baseline radiograph examination for follow-up investigation of the presence of subsequent THA. A total of 44 male ice hockey players were included, of which 31 had available radiographs and 39 answered the follow-up questions. Cam morphology (alpha-angle >= 60 degrees) was present in 81% of the players. Seven players (18%) had received a THA with a mean age of 55.7 (SD 6.1) years at time of THA-surgery. Tonnis score at baseline radiographs were associated with THA later in life (P < 0.001). This study conclude that former elite Swedish ice hockey players underwent THA at a younger age than the general population. Despite confirming previous research of high prevalence of cam morphology in elite ice hockey players, no association could be established between cam morphology and the need for THA.
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| 5. |
- Adolfsson, Lars, et al.
(author)
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Union of Scaphoid Waist Fractures in Adults Despite No or Minimal Immobilization : a Report of Five Cases
- 2020
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In: SN Comprehensive Clinical Medicine. - : Springer. - 2523-8973. ; 2:4, s. 491-495
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Journal article (peer-reviewed)abstract
- Traditionally scaphoid waist fractures have been treated with a long period, 10–12 weeks, of immobilization in a plaster cast until radiological union. The long period of immobilization sometimes infers great discomfort for the patients. To avoid this, surgical treatment with screw fixation has for the last decade been advocated as an option also for undisplaced fractures. In this report, we present five cases with undisplaced scaphoid waist fractures that have healed both radiologically and clinically without any immobilization at all or after a very short period of protection in a cast. These observations challenge the current treatment guidelines.
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| 6. |
- Al-Husseini, Ali, et al.
(author)
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Long-term postural control in elite athletes following mild traumatic brain injury
- 2022
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In: Frontiers in Neurology. - : Frontiers Media S.A.. - 1664-2295. ; 13
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Journal article (peer-reviewed)abstract
- Background: Traumas to the head and neck are common in sports and often affects otherwise healthy young individuals. Sports-related concussions (SRC), defined as a mild traumatic brain injury (mTBI), may inflict persistent neck and shoulder pain, and headache, but also more complex symptoms, such as imbalance, dizziness, and visual disturbances. These more complex symptoms are difficult to identify with standard health care diagnostic procedures.Objective: To investigate postural control in a group of former elite athletes with persistent post-concussive symptoms (PPCS) at least 6 months after the incident.Method: Postural control was examined using posturography during quiet stance and randomized balance perturbations with eyes open and eyes closed. Randomized balance perturbations were used to examine motor learning through sensorimotor adaptation. Force platform recordings were converted to reflect the energy used to maintain balance and spectrally categorized into total energy used, energy used for smooth corrective changes of posture (i.e., <0.1 Hz), and energy used for fast corrective movements to maintain balance (i.e., >0.1 Hz).Results: The mTBI group included 20 (13 males, mean age 26.6 years) elite athletes with PPCS and the control group included 12 athletes (9 males, mean age 26.4 years) with no history of SRC. The mTBI group used significantly more energy during balance perturbations than controls: +143% total energy, p = 0.004; +122% low frequency energy, p = 0.007; and +162% high frequency energy, p = 0.004. The mTBI subjects also adapted less to the balance perturbations than controls in total (18% mTBI vs. 37% controls, p = 0.042), low frequency (24% mTBI vs. 42% controls, p = 0.046), and high frequency (6% mTBI vs. 28% controls, p = 0.040). The mTBI subjects used significantly more energy during quiet stance than controls: +128% total energy, p = 0.034; +136% low-frequency energy, p = 0.048; and +109% high-frequency energy, p = 0.015.Conclusion: Athletes with previous mTBI and PPCS used more energy to stand compared to controls during balance perturbations and quiet stance and had diminished sensorimotor adaptation. Sports-related concussions are able to affect postural control and motor learning.
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| 7. |
- Al-Husseini, Ali, et al.
(author)
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Shorter Recovery Time in Concussed Elite Ice Hockey Players by Early Head-and-Neck Cooling: A Clinical Trial
- 2023
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In: Journal of Neurotrauma. - : Mary Ann Liebert. - 0897-7151 .- 1557-9042. ; 40:11-12, s. 1075-1085
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Journal article (peer-reviewed)abstract
- A sports-related concussion (SRC) is most commonly sustained in contact sports, and is defined as a mild traumatic brain injury. An exercise-induced elevation of core body temperature is associated with increased brain temperature that may accelerate secondary injury processes following SRC, and exacerbate the brain injury. In a recent pilot study, acute head-neck cooling of 29 concussed ice hockey players resulted in shorter time to return-to-play. Here, we extended the clinical trial to include players of 19 male elite Swedish ice hockey teams over five seasons (2016-2021). In the intervention teams, acute head-neck cooling was implemented using a head cap for ≥45 min in addition to the standard SRC management used in controls. The primary endpoint was time from SRC until return-to-play (RTP). Sixty-one SRCs were included in the intervention group and 71 SRCs in the control group. The number of previous SRCs was 2 (median and interquartile range [IQR]: 1.0-2.0) and 1 (IQR 1.0-2.0) in the intervention and control groups, respectively; p = 0.293. Median time to initiate head-neck cooling was 10 min (IQR 7-15; range 5-30 min) and median duration of cooling was 45 min (IQR 45-50; range 45-70 min). The median time to RTP was 9 days in the intervention group (IQR 7.0-13.5 days) and 13 days in the control group (IQR 9-30; p < 0.001). The proportion of players out from play for more than the expected recovery time of 14 days was 24.7% in the intervention group, and 43.7% in controls (p < 0.05). Study limitations include that: 1) allocation to cooling or control management was at the discretion of the medical staff of each team, decided prior to each season, and not by strict randomization; 2) no sham cap was used and evaluations could not be performed by blinded assessors; and 3) it could not be established with certainty that injury severity was similar between groups. While the results should thus be interpreted with caution, early head-neck cooling, with the aim of attenuating cerebral hyperthermia, may reduce post-SRC symptoms and lead to earlier return-to-play in elite ice hockey players.
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| 8. |
- Arroyo-Morales, Manuel, et al.
(author)
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The Lysholm score : Cross cultural validation and evaluation of psychometric properties of the Spanish version
- 2019
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In: PLOS ONE. - : Public Library of Science. - 1932-6203. ; 14:8
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Journal article (peer-reviewed)abstract
- BackgroundThis study aims at assessing the validity and reliability of the Spanish version of the Lysholm score, a widely used instrument for assessing knee function and activity level after ligament injuries.MethodsNinety-five participants (67.4% male, 22±5 years) completed the questionnaire twice within 7 days and a subsample of 42 participants completed a test-retest reliability. Reliability, validity and feasibility psychometric properties were studied. The validity of the questionnaire was analysed using ceiling and floor effects. Factor structure and construct validity were analysed with the SF-36, the Hip and Knee Questionnaire (HKQ) and one leg jump test (OLJT).ResultsCriterion validity with the SF-36 Physical State was moderate (r = 0.50 and p<0.01), poor and inverse relationship (r = -0.31, p<0.01) with HKQ and positive moderate (r = 0.59, p<0.01) with OLJT. Measurement error from MDC90 was 3.9%. Exploratory factor analysis demonstrated a one-factor solution explaining 51.5% of total variance. The x2 test for the one-factor model was significant (x2 = 29.58, df = 20, p < 0.08). Test-retest reliability level was high (ICC2.1 = 0.92, p<0.01) and also the internal consistency (α = 0.77).ConclusionThe Spanish Lysholm score demonstrated that it is a reliable and valid instrument that can be used to assess knee function after ligament injuries.
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| 10. |
- Biasca, Nicola, et al.
(author)
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Head injuries and facial injuries in ice hockey : role of the protective equipment
- 2005
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In: European Journal of Trauma. - : Springer Science and Business Media LLC. - 1439-0590 .- 1615-3146. ; 31:4, s. 369-75
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Journal article (peer-reviewed)abstract
- Background and Purpose: Despite a decreasing tendency of head and facial injuries in ice hockey the number of these injuries still seems to be too high. The purpose of this prospective investigation was to study the mechanism of facial and eye injuries as well as the role of protective equipment and revised rules. Methods: A prospective epidemiologic analysis of ice hockey-related injuries in the two highest-ranking Swiss Ice Hockey Leagues-League A (NLA) and B (NLB)-was performed by the Swiss Medical Committee during the two seasons 1996 and 1997. Results: A total of 392 injuries occurred during games or practice. Head injuries and facial injuries made up 26% of these injuries. Most of these injuries were classified as minor injuries. All eye injuries occurred in players either not wearing visors at all or wearing the visor incorrectly. Most injuries were caused by the illegal use of sticks. Conclusion: Most head injuries and facial injuries could be prevented by wearing helmet and visor correctly and by playing the game according to the rules
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