1. Flexor Digiti Minimi

Origin: Hook of hamate and flexor retinaculum

Insertion: Medial side of the base of the proximal phalanx of digit 5

Action: Flexes the proximal phalanx of digit 5

Innervation: Deep branch of the ulnar nerve (C8/T1)

Flexor digiti minimi.
Figure 12.2 Flexor digiti minimi, adapted by Liskova.klara from the original image by Henry Gray and Henry Vandyke Carter (Public domain).

Needling

Position: Various (sitting, supine, prone)

Palpation: Palpate the hypothenar eminence and resist digit 5 flexion to help isolate this muscle

Technique: Needle perpendicularly towards digit 5 metacarpal

Caution: Low

Needling flexor digiti minimi.
Figure 12.3 Needling flexor digiti minimi, original image by Nadine Crocker, CC BY-NC 4.0.

Video 12.1 Needling flexor digiti minimi, original video by Nadine Crocker, CC BY-NC 4.0.

License

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Sinew Channel Needling Copyright © 2026 by Nadine Crocker is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, except where otherwise noted.

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