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Supinator

Contents

Anatomy pictures

Supinator - posterolateral view
Supinator - posterior view
Supinator - anterior view

Referred pain pattern

Supinator - pain pattern

Muscle Type

  • Postural
    • Shortens when overactivated

Symptoms

  • Epicondylitis (both medial and lateral)
  • Pain in supination, problems using tools, screwdrivers etc.

Muscle attachment zones

 

Supinator - posterolateral view
Supinator - posterior view
Supinator - anterior view

Anatomy

Position

  • Deep

Origin

  • Medial epicondylus humeri
  • Radial collateral ligament
  • Dorsal side of ligamentum anulari radii
  • Crista musculi supinatoris ulnae

Insertion

  • Proximal 1/3 of radiusposterior lateral and anterior aspect

Main function

  • Elbow
    • Supination

Nerve innervation

  • Segmental
    • C5-C7
  • Peripheral
    • Nervus radialis

Arterial supply

  • Radial artery
  • Posterior interosseus artery