- May 2, 2026Mallet finger results from disruption of the terminal extensor tendon at zone 1 — at or just proximal to its…
- May 2, 2026The lumbrical muscles arise from the FDP tendons in the palm and insert via their tendons into the radial lateral…
- May 2, 2026The dorsal interossei and the palmar interossei insert into the dorsal extensor hood at the level of the proximal phalanx…
- May 2, 2026The adductor pollicis has two heads (oblique from the carpal bones and metacarpal bases, and transverse from the third metacarpal…
- May 2, 2026The abductor pollicis brevis tendon inserts on the radial base of the thumb proximal phalanx and sends a significant slip…
- May 2, 2026The flexor pollicis brevis has two heads: the superficial head (median nerve innervated) arises from the flexor retinaculum and inserts…
- May 2, 2026The central slip is the continuation of the EDC tendon that inserts on the dorsal base of the middle phalanx…
- May 2, 2026The FPL is the sole flexor of the thumb IP joint and the primary force generator for precision pinch. It…
- May 2, 2026The A2 and A4 pulleys are biomechanically critical — loss of either produces measurable bowstringing and reduced digital flexion power.…
- May 2, 2026The palmar aponeurosis longitudinal bands are the fibrous cords running from the flexor retinaculum to the fingers, providing the palm's…