The Imbalance of Shoulder Strength and the Range of its Motion is an Effective Factor in Recurrent Shoulder Dislocation

Introduction & The glenohumeral joint becomes dislocated more than any other major joint because it involves a wide range of motion، and its stability is inherently weak. The most common complication following acute initial shoulder dislocation is recurrent dislocation or chronic instability. The imbalance of strength and range of motion in individuals with anterior dislocation can be a contributing factor in recurrent shoulder dislocation. This case-control study consisted of 24 individuals with a mean age of 24. 29±4. 33 years، and a mean dislocation rate of 5. 37±3. 62 times. Isometric cuff strength was measured by using a handheld dynamometer، and for range of motion، the Leighton flexometer was used for the internal and external rotational motions of both upper extremities SPSS 18 and Independent t-test was used for data analysis. The internal and external range of motion of the injured glenohumeral joint was less than the uninjured joint (P