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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_IV | Pages 137 - 137
1 Mar 2012
Cheng S Wallace W Buchanan D Sivardeen Z Hulse D Fairbairn K Kemp S Brooks J
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Objective

Shoulder instability is a common cause of morbidity amongst Professional Rugby Union players. This study explores whether the risk of shoulder dislocation is associated with innate shoulder laxity.

Methods

A randomised controlled study was completed in which all the Premiership Rugby Clubs in England were visited in 2006. 169 professional rugby players (mean age 25.1 years) with no history of instability in either shoulder were assessed and 46 injured players with one shoulder with a history of Bankart lesion or dislocation (mean age 27.5 years) also took part in this study. Shoulder laxity was measured by dynamic ultrasound. Anterior, posterior and inferior translations were measured in both shoulders for healthy players and the uninjured shoulder only for injured players.


Orthopaedic Proceedings
Vol. 92-B, Issue SUPP_I | Pages 207 - 207
1 Mar 2010
Wallace A Cheng SC Buchanan D Sivardeen KAZ Hulse D Fairbairn KJ Kemp SPT Brooks JHM
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Objective: Shoulder instability is a common cause of morbidity amongst Professional Rugby Union players. This study explores whether the risk of shoulder dislocation is associated with innate shoulder laxity.

Methodology: We performed a pilot study where we validated techniques we used in the study and subsequently gained Ethics committee approval. The study was a controlled study, in which we visited all the Premiership Rugby Clubs in England. We assessed 169 professional rugby players (mean age 25.1 years, range 18–35) with no history of instability in either shoulder and 46 injured players with one shoulder with clinical shoulder instability symptoms (male, mean age 27.5 years, range 20–33) took part in this study. We assessed shoulder laxity by means of clinical evaluation, questionnaires and ultrasound. Anterior, posterior and inferior translation were measured in both shoulders for healthy players and the uninjured shoulder only for injured players.

Results: We found there is no significant difference between left (anterior: mean 2.92 mm, SD 1.15; posterior: mean 5.10 mm, SD 1.75; inferior: mean 3.08 mm, SD 1.00) and right (anterior: mean 3.07 mm, SD 1.14; posterior: mean 4.87 mm, SD 1.61; inferior: mean 2.91 mm, SD 0.99) shoulder in healthy players (P > 0.05). The comparison between the healthy shoulders (anterior: mean 3.00 mm, SD 1.15; posterior: mean 4.99 mm, SD 1.68; inferior: mean 3.00 mm, SD 1.00) from healthy players and the normal uninjured shoulder (anterior: mean 4.16 mm, SD 1.70; posterior: mean 6.16 mm, SD 3.04; inferior: mean 3.42 mm, SD 1.18) from injured players identified that players with unstable shoulders have a significantly higher shoulder translation in their normal shoulder than healthy players (P < 0.05).

Conclusion: This is the first study looking at laxity and the risk of shoulder dislocations in sportsmen involved in a high contact sport. These results support the hypothesis that rugby players with “lax” shoulders are more likely to sustain a dislocation or subluxation injury to one of these lax shoulders in their sport. We believe pre-season screening and targeted training may play a role in identifying those at risk and may decrease the incidence of dislocations.


Orthopaedic Proceedings
Vol. 91-B, Issue SUPP_II | Pages 261 - 261
1 May 2009
Sivardeen K Cheng S Buchanan D Hulse D Fairbairn K Kemp S Brooks J Wallace W
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Shoulder instability is a common cause of morbidity amongst Professional Rugby Union players. This study explores whether the risk of shoulder dislocation is associated with innate shoulder laxity. A prospective, randomised controlled study was completed in which all the Premiership Rugby Clubs in England were visited. 169 professional rugby players with no history of instability in either shoulder and 46 players with one shoulder with clinical instability symptoms were assessed. Shoulder laxity was measured by clinical evaluation, questionnaires and ultrasound. Anterior, posterior and inferior translation was measured in both shoulders for healthy players and the uninjured shoulder only for injured players. The results showed there was no significant difference between the left (anterior: mean 2.92 +/− 1.15 mm; posterior: mean 5.10 +/− 1.75 mm; inferior: mean 3.08 +/− 1.00 mm) and right (anterior: mean 3.07 +/− 1.14 mm; posterior: mean 4.87 +/− 1.61 mm; inferior: mean 2.91 +/− 0.99 mm) shoulders in healthy players (P > 0.05). The comparison between healthy shoulders (anterior: mean 3.00 +/− 1.15 mm; posterior: mean 4.99 +/− 1.68 mm; inferior: mean 3.00 +/− 1.00 mm) from healthy players and the uninjured shoulder (anterior: mean 4.16 +/− 1.70 mm; posterior: mean 6.16 +/− 3.04 mm; inferior: mean 3.42 +/− 1.18 mm) from injured players identified that players with unstable shoulders have a significantly higher shoulder translation in their normal shoulder than healthy players (P < 0.05). This is the first study looking at laxity and the risk of shoulder dislocations in sportsmen involved in a high contact sport. These results support the hypothesis that rugby players with “lax” shoulders are more likely to sustain a dislocation or subluxation injury to one of these lax shoulders in their sport.