Table 1.

Pearls and Pitfalls

The thumb test is easily performed and less technically challenging given that it is an active maneuver and is less susceptible to patient guarding and apprehension.

The examiner must ensure that the thumb is placed directly over the glenohumeral joint line, with half of the thumb contacting the posterior glenoid rim and half of it contacting the medial aspect of the posterior humeral head.

This article serves only as a description of this examination technique, and further study is needed to determine sensitivity and specificity.