This prospective descriptive epidemiologic study tracked every new traumatic shoulder instability event in a closed cohort of West Point cadets over one academic year. It asked how common instability really is in young athletes and what proportion are subluxations versus dislocations. All events were worked up with exam, radiographs, and MRI.
When a young athlete presents with a shoulder that popped out and went back in on its own, do not dismiss it as minor. This study showed subluxations make up 85% of instability events and carry labral tears in nearly half on MRI. The self-reducing event is not a benign event.
The practical mental model: the population most at risk is young, active, and disproportionately male, but females carry a higher share of multidirectional instability, which points you toward a different treatment path (rehab-first, capsular pathology) than a traumatic Bankart.
The incidence data reframe how common this problem is. A dislocation-only rate of 0.43% per year in athletes dwarfs the classic 8 to 24 per 100,000 general population figures. Age and activity level drive risk. For boards, know the definitions cold: subluxation does not need manual reduction, dislocation does. And know that anterior dislocations carry Bankart lesions in over 90%.
This prospective descriptive epidemiologic study tracked every new traumatic shoulder instability event in a closed cohort of West Point cadets over one academic year. It asked how common instability really is in young athletes and what proportion are subluxations versus dislocations. All events were worked up with exam, radiographs, and MRI.
When a young athlete presents with a shoulder that popped out and went back in on its own, do not dismiss it as minor. This study showed subluxations make up 85% of instability events and carry labral tears in nearly half on MRI. The self-reducing event is not a benign event.
The practical mental model: the population most at risk is young, active, and disproportionately male, but females carry a higher share of multidirectional instability, which points you toward a different treatment path (rehab-first, capsular pathology) than a traumatic Bankart.
The incidence data reframe how common this problem is. A dislocation-only rate of 0.43% per year in athletes dwarfs the classic 8 to 24 per 100,000 general population figures. Age and activity level drive risk. For boards, know the definitions cold: subluxation does not need manual reduction, dislocation does. And know that anterior dislocations carry Bankart lesions in over 90%.