An additional radial wrist extensor and its clinical significance

Soubhagya R. Nayak, S. J. Madhan Kumar, Ashwin Krishnamurthy, Latha V. Prabhu, Anu Vinod Ranade, Rajalakshmi Rai, Lakshmi Ramanathan

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)


The knowledge of anatomical variations in the antebrachial and dorsal regions of the arm and hand are useful in hand surgery. The extensor carpi radialis intermedius and extensor carpi radialis accessorius are two classic variants described for the radial wrist extensors, in the antebrachial region. We report an additional extensor carpi radialis muscle taking origin from the common extensor origin, between the extensor carpi radialis longus and extensor digitorum communis. The tendon of the variant muscle divides below the abductor pollicis longus and becomes attached to the base of the second and third metacarpal bone. Due to its considerable size and independent origin from the lateral epicondyle, we suggest the present variation should be named extensor carpi radialis tertius. The clinical significance of the present variation is discussed.

Original languageEnglish
Pages (from-to)283-286
Number of pages4
JournalAnnals of Anatomy
Issue number3
Publication statusPublished - 10-05-2007

All Science Journal Classification (ASJC) codes

  • Anatomy
  • Developmental Biology


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