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Origin: Common extensor tendon from lateral epicondyle of humerus, and deep antebrachial fascia

Insertion: Into extensor expansion of little finger with extensor digitorum tendon

Innervation: Radial, C6, 7, 8

Action: Extend the MCP and in conjunction with the lumbricals and interosseus, extends the IP of the little finger

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Extrinic Extensors | Extrinsics Flexors | Extrinsic Muscles | Instinsic Muscles | Musclel Arrangement | Help | Hand Kinesiology

Lorie Richards and Janice Loudon, University of Kansas Medical Center, School of Allied Health,
Occupational and Physical Therapy Education, October 1997