An understanding of the anatomy and biomechanical features of the glenohumeral joint is necessary when understanding the concept of shoulder laxity. Glenohumeral laxity is a normal feature of shoulder motion, but only when that laxity becomes excessive does instability occur. The clinician must use the history and physical examination to distinguish normal from pathological laxity. Several examination techniques are commonly used to evaluate anterior, posterior, inferior, and multidirectional shoulder laxity. It has become appreciated the subluxation of the shoulder is clinically or symptomatically unstable. This paper reviews the current techniques to evaluate shoulder laxity and discusses the interpretation of these examinations as they relate to normal and pathological laxities.
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Article Synopsis
- The study explored whether non-syndromic connective tissue hyperlaxity is linked to myopia in adolescents, using conditions like hernias and scoliosis as indicators of tissue hyperlaxity.
- Over 920,000 adolescents were analyzed, with 31.6% diagnosed with myopia; those with myopia exhibited higher rates of hernias (2.76%), pes planus (14.92%), and scoliosis (9.14%) compared to non-myopic peers.
- Findings suggest that myopic adolescents may have a greater tendency toward conditions associated with tissue laxity, indicating a possible systemic link between myopia and hyperlaxity.
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