What is the physiology of lateral epicondylitis (tennis elbow)?

Updated: Oct 30, 2018
  • Author: Bryant James Walrod, MD; Chief Editor: Craig C Young, MD  more...
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The tendons are relatively hypovascular proximal to the tendon insertion. This hypovascularity may predispose the tendon to hypoxic tendon degeneration and has been implicated in the etiology of tendinopathies. [2] Most typically, the primary pathology is tendinosis of the extensor carpi radialis brevis (ECRB) tendon 1-2 cm distal to its attachment on the lateral epicondyle. [2, 3]

For patient education resources, see the Hand, Wrist, Elbow, and Shoulder Center, as well as Tennis Elbow.

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