How Leandro Lo dislocated his shoulder
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Leandro Lo was a favorite going into @ibjjf Worlds this year to win both his weight class and the absolute however due to an unfortunate injury was unable to claim double gold. How did @leandrolojj hurt his shoulder?
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During his final match against Mahamed Aly, Lo attempted a takedown and in the transition he had a faulty landing which resulted in an inferior shoulder dislocation. Lo was able to continue however during a sweep attempt his shoulder dislocated again and he had to concede the match.
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The glenohumeral joint is an extremely mobile joint which means it has inherently less stability. Most commonly a shoulder dislocation occurs in an anterior position but in this case he suffered an inferior dislocation. Inferior dislocations tend to occur with impact in a hyperabducted position. Once a dislocation or subluxation (partial) occurs the static structures to assist with stability are compromised.
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The shoulder (glenohumeral joint) involves the head of the humerus (upper arm) articulating with the glenoid fossa.
•A stable shoulder will have the humeral head centered in the glenoid fossa with arm movements.
•An unstable shoulder means the dynamic and static stabilizers are unable to keep the humeral head centered.
1️⃣Dynamic stabilizers (rotator cuff muscles): These muscles act like suction cups on the humeral head to keep it compressed and stable.
2️⃣Static Stabilizers: glenohumeral ligaments, joint capsule and labrum.
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Hopefully Leandro Lo has a speedy recovery and can attempt the impressive feat next year.
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References:
1️⃣Neumann, D. A. (2010). Kinesiology of the musculoskeletal system: Foundations for rehabilitation. 2. p. Mosby Elsevier.
2️⃣Wilk, K. E., Reinold, M. M., & Andrews, J. R. (2009). The athlete’s shoulder. Elsevier Health Sciences.
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