Comparison of immobilization in internal versus external rotation after first time anterior shoulder dislocation.

The purpose of this study is to compare immobilization in internal versus external rotation after first time anterior shoulder dislocation, and thereby increase our knowledge about the best standard of care.

Inclusion Criteria:

• 14 to 30 years of age
• Willing to participate in follow-up for at least two years
• Acute, first-time, traumatic, isolated anterior dislocation of the shoulder

Exclusion Criteria:

• Previous instability of the affected shoulder
• A history of significant ligamentous laxity or demonstrated multi-directional instability of the opposite shoulder
• Inability or unwillingness to comply with sling immobilization, rehabilitative protocol, or required follow-up assessments
• Incompetent or unwilling to consent
• A medical condition making the patient unable to wear a sling
• Significant associated fracture (Exception Hill Sachs of >20% or bony Bankart lesions>10%)
• Neurovascular compromise of the affected limb
• Concomitant ipsilateral upper extremity injuries which may affect the patient's ability to participate in, or benefit from, a rehabilitative program.