| 1. |
- Ekstrand, Jan, et al.
(författare)
-
Fewer ligament injuries but no preventive effect on muscle injuries and severe injuries: an 11-year follow-up of the UEFA Champions League injury study
- 2013
-
Ingår i: British Journal of Sports Medicine. - : BMJ Publishing Group. - 0306-3674 .- 1473-0480. ; 47:12, s. 732-
-
Tidskriftsartikel (refereegranskat)abstract
- Background less thanbrgreater than less thanbrgreater thanLimited information is available on the variation in injury rates over multiple seasons of professional football. less thanbrgreater than less thanbrgreater thanAim less thanbrgreater than less thanbrgreater thanTo analyse time-trends in injury characteristics of male professional football players over 11 consecutive seasons. less thanbrgreater than less thanbrgreater thanMethods less thanbrgreater than less thanbrgreater thanA total of 1743 players comprising 27 teams from 10 countries were followed prospectively between 2001 and 2012. Team medical staff recorded individual player exposure and time loss injuries. less thanbrgreater than less thanbrgreater thanResults less thanbrgreater than less thanbrgreater thanA total of 8029 time loss injuries were recorded. The match unavailability due to injury was 14% and constant over the study period. On average, a player sustained two injuries per season, resulting in approximately 50 injuries per team and season. The ligament injury rate decreased during the study period (R-2=0.608, b=-0.040, 95% CI -0.065 to -0.016, p=0.005), whereas the rate of muscle injury (R-2=0.228, b=-0.013, 95% CI -0.032 to 0.005, p=0.138) and severe injury (R-2=0.141, b=0.015, 95% CI -0.013 to 0.043, p=0.255) did not change over the study period. In addition, no changes in injury rates over the 11-year period were found for either training (R-2=0.000, b=0.000, 95% CI -0.035 to 0.034, p=0.988) or match play (R-2=0.282, b=-0.015, 95% CI -0.032 to 0.003, p=0.093). less thanbrgreater than less thanbrgreater thanConclusions less thanbrgreater than less thanbrgreater thanThe injury rate has decreased for ligament injuries over the last 11years, but overall training, match injury rates and the rates of muscle injury and severe injury remain high.
|
|
| 2. |
- Ekstrand, Jan, et al.
(författare)
-
Return to play after thigh muscle injury in elite football players: implementation and validation of the Munich muscle injury classification
- 2013
-
Ingår i: British Journal of Sports Medicine. - : BMJ Publishing Group. - 0306-3674 .- 1473-0480. ; 47:12, s. 769-774
-
Tidskriftsartikel (refereegranskat)abstract
- Background Owing to the complexity and heterogeneity of muscle injuries, a generally accepted classification system is still lacking. less thanbrgreater than less thanbrgreater thanAims To prospectively implement and validate a novel muscle injury classification and to evaluate its predictive value for return to professional football. less thanbrgreater than less thanbrgreater thanMethods The recently described Munich muscle injury classification was prospectively evaluated in 31 European professional male football teams during the 2011/2012 season. Thigh muscle injury types were recorded by team medical staff and correlated to individual player exposure and resultant time-loss. less thanbrgreater than less thanbrgreater thanResults In total, 393 thigh muscle injuries occurred. The muscle classification system was well received with a 100% response rate. Two-thirds of thigh muscle injuries were classified as structural and were associated with longer lay-off times compared to functional muscle disorders (pandlt;0.001). Significant differences were observed between structural injury subgroups (minor partial, moderate partial and complete injuries) with increasing lay-off time associated with more severe structural injury. Median lay-off time of functional disorders was 5-8 days without significant differences between subgroups. There was no significant difference in the absence time between anterior and posterior thigh injuries. less thanbrgreater than less thanbrgreater thanConclusions The Munich muscle classification demonstrates a positive prognostic validity for return to play after thigh muscle injury in professional male football players. Structural injuries are associated with longer average lay-off times than functional muscle disorders. Subclassification of structural injuries correlates with return to play, while subgrouping of functional disorders shows less prognostic relevance. Functional disorders are often underestimated clinically and require further systematic study.
|
|
| 3. |
- Gajhede-Knudsen, Mariann, et al.
(författare)
-
Recurrence of Achilles tendon injuries in elite male football players is more common after early return to play: an 11-year follow-up of the UEFA Champions League injury study
- 2013
-
Ingår i: British Journal of Sports Medicine. - : BMJ Publishing Group. - 0306-3674 .- 1473-0480. ; 47:12, s. 763-768
-
Tidskriftsartikel (refereegranskat)abstract
- Background There is limited information about Achilles tendon disorders in professional football. less thanbrgreater than less thanbrgreater thanAims To investigate the incidence, injury circumstances, lay-off times and reinjury rates of Achilles tendon disorders in male professional football. less thanbrgreater than less thanbrgreater thanMethods A total of 27 clubs from 10 countries and 1743 players have been followed prospectively during 11 seasons between 2001 and 2012. The team medical staff recorded individual player exposure and time-loss injuries. less thanbrgreater than less thanbrgreater thanResults A total of 203 (2.5% of all injuries) Achilles tendon disorders were registered. A majority (96%) of the disorders were tendinopathies, and nine were partial or total ruptures. A higher injury rate was found during the preseason compared with the competitive season, 0.25 vs 0.18/1000 h (rate ratio (RR) 1.4, 95% CI 1.1 to 2.0; p=0.027). The mean lay-off time for Achilles tendinopathies was 23 +/- 37 (median=10, Q(1)=4 and Q(3)=24) days, while a rupture of the Achilles tendon, on average, caused 161 +/- 65 (median=169, Q(1)=110 and Q(3)=189) days of absence. Players with Achilles tendon disorders were significantly older than the rest of the cohort, with a mean age of 27.2 +/- 4 years vs 25.6 +/- 4.6 years (pandlt;0.001). 27% of all Achilles tendinopathies were reinjuries. A higher reinjury risk was found after short recovery periods (31%) compared with longer recovery periods (13%) (RR 2.4, 95% CI 2.1 to 2.8; pandlt;0.001). less thanbrgreater than less thanbrgreater thanConclusions Achilles tendon disorders account for 3.8% of the total lay-off time and are more common in older players. Recurrence is common after Achilles tendinopathies and the reinjury risk is higher after short recovery periods.
|
|
| 4. |
- Hägglund, Martin, et al.
(författare)
-
Injuries affect team performance negatively in professional football : an 11-year follow-up of the UEFA Champions League injury study
- 2013
-
Ingår i: British Journal of Sports Medicine. - : BMJ Publishing Group. - 0306-3674 .- 1473-0480. ; 47:12, s. 738-742
-
Tidskriftsartikel (refereegranskat)abstract
- Background The influence of injuries on team performance in football has only been scarcely investigated.Aim To study the association between injury rates and team performance in the domestic league play, and in European cups, in male professional football.Methods 24 football teams from nine European countries were followed prospectively for 11 seasons (2001–2012), including 155 team-seasons. Individual training and match exposure and time-loss injuries were registered. To analyse the effect of injury rates on performance, a Generalised Estimating Equation was used to fit a linear regression on team-level data. Each team's season injury rate and performance were evaluated using its own preceding season data for comparison in the analyses.Results 7792 injuries were reported during 1 026 104 exposure hours. The total injury incidence was 7.7 injuries/1000 h, injury burden 130 injury days lost/1000 h and player match availability 86%. Lower injury burden (p=0.011) and higher match availability (p=0.031) were associated with higher final league ranking. Similarly, lower injury incidence (p=0.035), lower injury burden (p<0.001) and higher match availability (p<0.001) were associated with increased points per league match. Finally, lower injury burden (p=0.043) and higher match availability (p=0.048) were associated with an increase in the Union of European Football Association (UEFA) Season Club Coefficient, reflecting success in the UEFA Champions League or Europa League.Conclusions Injuries had a significant influence on performance in the league play and in European cups in male professional football. The findings stress the importance of injury prevention to increase a team's chances of success.
|
|
| 5. |
- Lundblad, Matilda, et al.
(författare)
-
The UEFA injury study: 11-year data concerning 346 MCL injuries and time to return to play
- 2013
-
Ingår i: British Journal of Sports Medicine. - : BMJ Publishing Group. - 0306-3674 .- 1473-0480. ; 47:12, s. 759-
-
Tidskriftsartikel (refereegranskat)abstract
- Background Medial collateral ligament (MCL) injury is the most common knee ligament injury in professional football. less thanbrgreater than less thanbrgreater thanAim To investigate the rate and circumstances of MCL injuries and development over the past decade. less thanbrgreater than less thanbrgreater thanMethods Prospective cohort study, in which 27 professional European teams were followed over 11 seasons (2001/2002 to 2011/2012). Team medical staffs recorded player exposure and time loss injuries. MCL injuries were classified into four severity categories. Injury rate was defined as the number of injuries per 1000 player-hours. less thanbrgreater than less thanbrgreater thanResults 346 MCL injuries occurred during 1057 201 h (rate 0.33/1000 h). The match injury rate was nine times higher than the training injury rate (1.31 vs 0.14/1000 h, rate ratio 9.3, 95% CI 7.5 to 11.6, pandlt;0.001). There was a significant average annual decrease of approximately 7% (p=0.023). The average lay-off was 23 days, and there was no difference in median lay-off between index injuries and reinjuries (18 vs 13, p=0.20). Almost 70% of all MCL injuries were contact-related, and there was no difference in median lay-off between contact and non-contact injuries (16 vs 16, p=0.74). less thanbrgreater than less thanbrgreater thanConclusions This largest series of MCL injuries in professional football suggests that the time loss from football for MCL injury is 23 days. Also, the MCL injury rate decreased significantly during the 11-year study period.
|
|
| 6. |
- Prentice, H. A., et al.
(författare)
-
Patient demographic and surgical characteristics in anterior cruciate ligament reconstruction: a description of registries from six countries
- 2018
-
Ingår i: British Journal of Sports Medicine. - : BMJ. - 0306-3674 .- 1473-0480. ; 52:11
-
Tidskriftsartikel (refereegranskat)abstract
- Objective Findings from individual anterior cruciate ligament reconstruction (ACLR) registry studies are impactful, but how various registries from different countries compare with different patient populations and surgical techniques has not been described. We sought to describe six ACLR registry cohorts to understand variation across countries. Methods Five European registries and one US registry participated. For each registry, all primary ACLR registered between registry establishment through 31December 2014 were identified. Descriptive statistics included frequencies, proportions, medians and IQRs. Revision incidence rates following primary ACLR were computed. Results 101 125 ACLR were included: 21820 in Denmark, 300 in Luxembourg, 17556 in Norway, 30422 in Sweden, 2972 in the UK and 28055 in the US. In all six cohorts, males (range: 56.8%-72.4%) and soccer injuries (range: 14.1%-42.3%) were most common. European countries mostly used autografts (range: 93.7%-99.7%); allograft was most common in the US (39.9%). Interference screw was the most frequent femoral fixation in Luxembourg and the US (84.8% and 42.9%), and suspensory fixation was more frequent in the other countries (range: 43.9%-75.5%). Interference was the most frequent tibial fixation type in all six cohorts (range: 64.8%-98.2%). Three-year cumulative revision probabilities ranged from 2.8% to 3.7%. Conclusions Similarities in patient demographics and injury activity were observed between all cohorts of ACLR. However, graft and fixation choices differed. Revision rates were low. This work, including >100 000 ACLR, is the most comprehensive international description of contemporary practice to date.
|
|
| 7. |
- Waldén, Markus, et al.
(författare)
-
ACL injuries in mens professional football: a 15-year prospective study on time trends and return-to-play rates reveals only 65% of players still play at the top level 3 years after ACL rupture
- 2016
-
Ingår i: British Journal of Sports Medicine. - : BMJ PUBLISHING GROUP. - 0306-3674 .- 1473-0480. ; 50:12, s. 744-750
-
Tidskriftsartikel (refereegranskat)abstract
- Background Studies investigating the development of ACL injuries over time in football are scarce and more data on what happens before and after return to play (RTP) are needed. Aim To investigate (1) time trends in ACL injury rates, (2) complication rates before return to match play following ACL reconstruction, and (3) the influence of ACL injury on the subsequent playing career in male professional football players. Methods 78 clubs were followed between 2001 and 2015. Time trend in ACL injury rate was analysed using linear regression. ACL-injured players were monitored until RTP and tracked for 3 years after RTP. Results We recorded 157 ACL injuries, 140 total and 17 partial ruptures, with a non-significant average annual increase in the ACL injury rate by 6% (R-2=0.13, b=0.059, 95% CI -0.04 to 0.15, p=0.20). The match ACL injury rate was 20-fold higher than the training injury rate (0.340 vs 0.017 per 1000 h). 138 players (98.6%) with a total rupture underwent ACL reconstruction; all 134 players with RTP data (4 players still under rehabilitation) were able to return to training, but 9 of them (6.7%) suffered complications before their first match appearance (5 reruptures and 4 other knee surgeries). The median layoff after ACL reconstruction was 6.6 months to training and 7.4 months to match play. We report 3-year follow-up data for 106 players in total; 91 players (85.8%) were still playing football and 60 of 93 players (65%) with ACL reconstruction for a total rupture played at the same level. Conclusions The ACL injury rate has not declined during the 2000s and the rerupture rate before return to match play was 4%. The RTP rate within a year after ACL reconstruction was very high, but only two-thirds competed at the highest level 3 years later.
|
|
| 8. |
- Waldén, Markus, et al.
(författare)
-
Republished research: Prevention of acute knee injuries in adolescent female football players : cluster randomised controlled trial
- 2012
-
Ingår i: British Journal of Sports Medicine. - : BMJ Publishing Group. - 0306-3674 .- 1473-0480. ; 46:13, s. 904-
-
Tidskriftsartikel (refereegranskat)abstract
- Study question Does a neuromuscular warm-up programme reduce the rate of anterior cruciate ligament injury in adolescent female football players? Summary answer The neuromuscular warm-up programme reduced the overall rate of anterior cruciate ligament injury by 64%.What is known and what this paper adds Knee injuries are common in football regardless of the playing level, and adolescent female players are more susceptible to anterior cruciate ligament injury than their male counterparts. Almost two thirds of anterior cruciate ligament injuries in adolescent female football players can be prevented with a 15 minute neuromuscular warm-up programme.
|
|
