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DEEP POSTERIOR COMPARTMENT OF FOREARM-EPB

Anatomy-Upper Limb

DEEP POSTERIOR COMPARTMENT OF FOREARM-EPB

EXTENSOR POLLICIS BREVIS
TIP: EPL, EI, SUPINATOR arise from the ulna, the rest arise from either the radius or both radius and ulna

1. O: posterior surface of radius & interosseous membrane.
2. I: dorsal base of proximal phalanx of the thumb.
3. NS: posterior interosseous branch of radial n.
4. A: extends the proximal phalanx of the thumb at the CMCJ.


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REFERENCES

1. Mcminn. (2003). Last's Anatomy. Elsevier Australia. ISBN:0729537528. Read it at Google Books - Find it at Amazon
2. Netter, F. H. (2019). Atlas of human anatomy. Philadelphia, PA: Elsevier.
3. Image: Extensor ppollicis brevis muscle. Netter. (2014). Atlas of Human Anatomy, Sixth Edition. 6th ed. Elsevier.

Ⓒ A. Manickam 2018

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