Palmaris Longus

Musculus palmaris longus

Upper Body ArmsForearms

Palmaris longus is a slender, mostly tendinous wrist flexor that is absent in roughly 10-15% of people and contributes only weakly to wrist flexion. Its prominent tendon at the wrist is a common visual landmark and a frequent donor for tendon grafts. It is trained incidentally during wrist curls and grip work but is rarely a limiting factor in strength.

Actions

Wrist flexion, Tensing of the palmar aponeurosis

Origin

Medial epicondyle of the humerus via the common flexor tendon

Insertion

Flexor retinaculum and palmar aponeurosis

Innervation

Median nerve (C7-C8)

Blood supply

Ulnar artery (posterior ulnar recurrent artery)

Wikipedia ↗

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