- May 6, 2026The ulnar collateral ligament of the index finger MCP joint connects the ulnar metacarpal head to the ulnar base of…
- May 6, 2026The ulnar collateral ligament of the middle finger MCP joint provides the ulnar constraint to the middle MCP articulation, resisting…
- May 6, 2026The ulnar collateral ligament of the ring finger MCP joint resists radial deviation at the ring MCP level, completing the…
- May 6, 2026The first extensor compartment is a fibro-osseous tunnel over the radial styloid containing the abductor pollicis longus and extensor pollicis…
- May 6, 2026The third extensor compartment contains the extensor pollicis longus tendon, using Lister tubercle as its pulley to redirect the EPL…
- May 6, 2026The fourth extensor compartment contains the extensor digitorum communis (four slips) and extensor indicis proprius tendons, forming the largest of…
- May 6, 2026The fifth extensor compartment contains only the extensor digiti minimi tendon, running over the distal ulna. The EDM has two…
- May 6, 2026The thumb A2 pulley is the distal annular pulley of the thumb flexor sheath, located over the proximal phalanx of…
- May 6, 2026The second dorsal interosseous abducts the middle finger toward the index finger. The four dorsal interossei abduct the index (first…
- May 6, 2026The third dorsal interosseous abducts the middle finger toward the ring finger. The middle finger has two dorsal interossei (second…