Tag: oitf-scapulohumeral

Deltoid – Functional Anatomy

Deltoid   Deltoid is a triangular muscle that works closely with the rotator cuff muscles to lift the humeral shaft superiorly. It is also key in preventing dislocation of the humerus when lifting heavy loads. AllContinue reading

Teres Major – Functional Anatomy

Teres Major Teres major works closely with latissimus dorsi in adducting and extending the humerus. The lateral portion of latissimus dorsi usually twists around teres major and lives in the same fascial sheath. Latissimus, in a minority ofContinue reading

Rotator Cuff Muscles – Functional Anatomy

Rotator Cuff Muscles Origin – scapula Insertion – head of the humerus Function – Stabilize, rotate and adduct the humerus Related sections of the website:    Wikipedia entry for rotator cuff muscles. Tony Preston has aContinue reading

Infraspinatus – Functional Anatomy

Infraspinatus   Origin: infraspinous fossa Insertion: posterior greater tubercle of the humerus Function: stabilize the humeral head, externally rotate humerus   Wikipedia entry for infraspinatus. Tony Preston has a practice in Atlanta, Georgia where he sees clients. HeContinue reading

Supraspinatus – Functional Anatomy

Supraspinatus Supraspinatus is a rotator cuff muscle located on the superior aspect of the scapula. Origin: Supraspinous fossa Insertion: greater tubercle of the humerus Function: abduction of the humerus. Details vary from one study toContinue reading