Managing Posterior Shoulder Instability.

Area of Science:

• Orthopedics
• Sports Medicine
• Biomechanics

Background:

• Posterior shoulder instability is an emerging cause of pain in athletes involved in throwing, overhead, and contact sports.
• It typically arises from repetitive microtrauma or acute traumatic events.
• Clinical signs may be subtle, necessitating specific diagnostic approaches.

Purpose of the Study:

• To outline the diagnostic challenges and methods for identifying posterior shoulder instability.
• To describe the primary non-operative treatment strategies.
• To discuss the role and ongoing debate surrounding surgical interventions.

Main Methods:

• Review of clinical presentation and diagnostic techniques for posterior shoulder instability.
• Emphasis on physical examination, provocative maneuvers, and radiographic assessment.
• Discussion of treatment protocols, including physical therapy and surgical considerations.

Main Results:

• Abnormal humeral head translation is a key finding, often requiring specialized tests for detection.
• Physical therapy focusing on the infraspinatus, teres minor, and posterior deltoid is the initial treatment of choice.
• Diagnostic procedures may extend to examination under anesthesia or arthroscopy in complex cases.

Conclusions:

• Accurate diagnosis of posterior shoulder instability relies on targeted physical examinations and imaging.
• Conservative management through targeted physical therapy is the recommended first-line treatment.
• Surgical techniques for posterior shoulder instability are still evolving, with no universally agreed-upon optimal method.