Common Extensor Tendon
Description
Other Names
- Common Extensor Tendon
- Common extensor origin of the elbow
General
- Common insertion for multiple wrist extensors
- ECRB is most commonly implicated in lateral epicondylitis
Anatomic Description
- Flat tendinous structure originating from the anterolateral surface of the lateral epicondyle
- Found just distal to the origin of the extensor carpi radialis longus (ECRL)
Muscle Attachments
- Orientation from anterior to posterior
- Extensor Carpi Radialis Brevis (ECRB) (superficial to the radial collateral ligament)
- Extensor Digitorum Communis (EDC), Extensor Digiti Minimi (EDM)
- Extensor Carpi Ulnaris (ECU) (superficial to lateral ulnar collateral ligament)
Actions
- Primary
- Wrist Extension
- Radial/ulnar Abduction
- Dynamic stabilizer of the elbow joint
- Secondary[3]
- Restraint to varus force
Vascular Supply
- Branches of
- Radial Artery
- Deep Brachial
- Common Interosseous Artery
Innervation
Clinical Significance
See Also
References
- ↑ Image courtesy of orthobullets, "Tennis Elbow"
- ↑ Toprak, Uğur, et al. "Common extensor tendon thickness measurements at the radiocapitellar region in diagnosis of lateral elbow tendinopathy." Diagn Interv Radiol 18.6 (2012): 566-570.
- ↑ . Karbach L & Elfar J. Elbow Instability: Anatomy, Biomechanics, Diagnostic Maneuvers, and Testing. J Hand Surg Am. 2017;42(2):118-26. doi:10.1016/j.jhsa.2016.11.025