- April 28, 2026The adductor pollicis is the most powerful intrinsic muscle of the hand, generating the key pinch force between the thumb…
- April 28, 2026The opponens pollicis is the thenar muscle that produces the defining human function of precision pinch through thumb opposition. It…
- April 28, 2026The APB is the most superficial thenar muscle and the most reliable test of median nerve motor function — it…
- April 28, 2026The first dorsal interosseous is the largest interosseous muscle, forming the visible bulk of the first web space on the…
- April 28, 2026The palmaris brevis is the only intrinsic muscle inserting into palm skin, cupping the hypothenar eminence during grip. It is…
- April 28, 2026The opponens digiti minimi wraps around the fifth metacarpal to rotate and flex it at the CMC joint, deepening the…
- April 28, 2026The FPB flexes the thumb MCP joint and is one of the three thenar muscles innervated predominantly by the median…
- April 28, 2026The ADM is the most lateral hypothenar muscle, forming the medial border of the hand and abducting the little finger.…
- April 28, 2026The FDMB forms the central hypothenar muscle, flexing the little finger MCP joint. With the ADM and opponens digiti minimi…
- April 28, 2026The five annular (A1-A5) and three cruciate pulleys of each finger form the fibro-osseous flexor tendon sheath. The A2 pulley…