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 - Discussion: 
    - origin:
           - lateral epicondyle of humerus, radial collateral ligament of elbow, annular ligaments of radius and the supinator crest of ulna;
    - insertion:
           - oblique line on the lateral anterior surface of the upper 1/3 of radius;
           - supinator covers the upper third of the radius;
    - action: supinates the forearm;
    - nerve supply: radial (PIN branch), C5, C6 
           - PIN supplies ECRB and supinator muscles before entering arcade of Froshe; 
           - PIN brach travels thru the substance of the supinator, and runs between the superficial and deep heads of the muscle;
    - synergists: biceps brachi 

- humerus fracture:
        - w/ humerus frx, need to r/o radial nerve palsy;
        - first branches distal to frx site will be ECRB & supinator

Tendon transfer.  Biomechanic Comparison of 3 Tendon Transfers for Supination of the Forearm.

The two locations of ganglions causing radial nerve palsy.

MR imaging features of radial tunnel syndrome: initial experience.

Superficial surgical landmarks for identifying the posterior interosseous nerve.

MRI diagnosis of occult ganglion compression of the posterior interosseous nerve and associated supinator muscle pathology.

Anatomic and morphometric study of the arcade of Frohse in cadavers.

Anatomic pattern of the terminal branches of posterior interosseous nerve.

The annular ligament: an anatomical study.

Investigation of two possible compression sites of the deep branch of the radial nerve and nerve supply of the extensor carpi radialis brevis muscle.

The anatomical relationship between the posterior interosseous nerve and the supinator muscle.

Extensile posterior approach to the radius.