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Origin: Common flexor tendon from medial epicondyle of humerus and deep antebrachial fascia

Insertion: Base of second metacarpal bone and a slip to base of third metacarpal bone

Innervation: Median, C6, 7, 8

Action: Flexes and abducts (radially deviates the wrist, may assist in pronation of the forearm and flexion of the wrist

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Superficial Extrinsic Flexors | Extrinsic Flexors | Extrinsic Extensors | Extrinsic Muscles | Intrinsic Muscles | Muscle 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