Role of clinical and radiological parameters for recurrence after primary anterior shoulder dislocation.

Background: Recurrent shoulder dislocation risk is influenced by modifiable (sports participation, immobilization after first anterior dislocation of shoulder (FADS), timing of athletic activity resumption) and nonmodifiable factors like age, sex, hypermobility, and the initial mechanism of injury. These factors, individually or in combination, contribute to an increased risk of recurrent shoulder dislocation. This study aims to ascertain the factors contributing to recurrent anterior shoulder dislocation, explore their interplay, and assess their impact on the overall frequency of dislocations. Methods: Clinical data regarding patient demographics, mechanism of injury, number of dislocations, night dislocations, and sports participation were retrospectively collected for 206 subjects. Radiological data, including glenoid bone loss and glenoid track, were also collected and analyzed. Results: Out of 206, 195 patients were men (94.7%). The mean age ± standard deviation at which men and women experienced their FADS was 25.3 ± 8.25 and 33.7 ± 9.43 years, respectively. Although FADS was common in overhead sports vs. other sports (83% vs. 17%), there was no difference in further recurrences between the two groups ( Conclusion: Recurrence is more common in men and occurs at a younger age than in women. It is common in overhead sports. People who self-reduce their initial dislocation than doctor reduced, or nonimmobilized ones have a greater recurrence rate. Frequent dislocations during sleep have a strong association with higher glenoid bone loss. Increasing glenoid bone loss and off-track Hill Sachs lesion are also strongly associated with increased recurrent dislocations.