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Identifying the specific etiology of shoulder pain is often a difficult task, as the
shoulder joint has a wide range of movement. Apart from the scapulohumeral joint, a
second joint exists between the head of humerus and the acromioclavicular bones.
The head of humerus is covered by a tendinous sheath forming the short rotator
muscles (supraspinatus, infraspinatus, teres minor and, subscapularis). The
subacromial bursa helps prevent upward humeral displacement and facilitates
movement of the entire musculotendinous cuff.
shoulder joint has a wide range of movement. Apart from the scapulohumeral joint, a
second joint exists between the head of humerus and the acromioclavicular bones.
The head of humerus is covered by a tendinous sheath forming the short rotator
muscles (supraspinatus, infraspinatus, teres minor and, subscapularis). The
subacromial bursa helps prevent upward humeral displacement and facilitates
movement of the entire musculotendinous cuff.
El dolor localizado a nivel del hombro puede tener diversas etiologías, a menudo difíciles de identificar, dado que la articulación tiene un amplio rango de movilidad en varias direcciones. Además de la articulación escápulohumeral existe una segunda articulación situada entre la cabeza humeral, cubierta por el manguito tendinoso, que forman los rotadores cortos (supraespinoso, infraespinoso, redondo menor y subescapular) y el plano óseo acromioclavicular. El deslizamiento está asegurado por la bolsa subacromiodeltoidea, la más voluminosa del organismo y que realiza las funciones de cavidad articular.
