Glenoid anteversion increases the risk of which type of shoulder instability?

Glenoid anteversion increases the risk of which type of shoulder instability?

• A. Anterior Instability
• B. Posterior Instability
• C. Inferior Instability
• D. Superior Instability

Answer: (A)

Glenoid anteversion means the socket is tilted forward, so its anterior rim presents less restraint to forward translation of the humeral head. With the head forced into forward movement during actions or trauma, the tendency is toward anterior dislocation, making anterior instability the most likely consequence of increased glenoid anteversion. Posterior instability is more linked to a posteriorly tilted (retroverted) socket, while inferior or superior instability are not primarily driven by glenoid version.

Glenoid anteversion means the socket is tilted forward, so its anterior rim presents less restraint to forward translation of the humeral head. With the head forced into forward movement during actions or trauma, the tendency is toward anterior dislocation, making anterior instability the most likely consequence of increased glenoid anteversion. Posterior instability is more linked to a posteriorly tilted (retroverted) socket, while inferior or superior instability are not primarily driven by glenoid version.