The flexor digiti minimi brevis is a hypothenar muscle located within the hand. It is located lateral to the abductor digiti minimi brevis. Attachments: Originates from the hook of hamate and adjacent flexor retinaculum. Inserts onto the base of the proximal phalanx of the little finger. Actions: Flexion at the metacarpophalangeal joint joint of the little finger. Innervation: Ulnar nerve. Blood supply: Deep palmar arch. By TeachMeSeries Ltd (2025) Figure 1Superficial and deep layers of the hypothenar muscles Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Print Article Rate This Article