- May 6, 2026FDM is the central hypothenar muscle. Its hook of hamate origin makes it the muscle most at risk in hook…
- May 6, 2026ODM is the deepest hypothenar muscle, wrapping the fifth metacarpal. Its loss in ulnar palsy reduces palmar cupping and weakens…
- May 6, 2026The thenar eminence is formed by four intrinsic thumb muscles whose coordinated action produces thumb opposition — the defining human…
- May 6, 2026The hypothenar eminence is formed by ADM, FDM, and ODM. All three receive deep ulnar nerve innervation via the deep…
- May 6, 2026APB is the most superficial thenar muscle and the primary palmar thumb abductor. Its unique insertion onto the extensor expansion…
- May 6, 2026The oblique head provides the primary adduction force for key pinch. Its more proximal origin gives it a greater moment…
- May 2, 2026The radial artery gives thenar branches as it crosses the wrist to enter the deep palmar arch, supplying the thenar…
- May 2, 2026The ulnar artery gives hypothenar branches in Guyon's canal and as it enters the palm, supplying the hypothenar muscles (abductor,…
- May 2, 2026The proper palmar digital veins drain each finger's palmar skin and pulp on their medial and lateral aspects, converging at…
- May 2, 2026The dorsal carpal radial vein drains the dorsoradial wrist and first web space into the cephalic vein origin at the…