Enthesitis of biceps brachii short head and coracobrachialis at the coracoid process: a generator of shoulder and neck pain.

This series describes the outcome of diagnostic block at the coracoid process's common origin of the biceps brachii short head and coracobrachialis for anterior shoulder pain and cervical myofascial pain syndrome in six patients. All showed significant tenderness over the tip of the coracoid process. All underwent diagnostic injection with Marcaine at the coracoid process, followed by therapeutic injection with Marcaine and DepoMedrol. All reported complete relief of pain after local injection. Enthesitis at the coracoid process needs to be considered as a causative or contributing factor in patients presenting with shoulder and neck symptoms. No study was found in the literature describing this association. Whether tendonitis of the common origin is a primary cause or result of chronic neck and shoulder dysfunction remains to be established.