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Thenar Group
Nerve, blood supply, origin, insertion
Question | Answer |
---|---|
Opponens pollicis N | Motor branch of median n. and branch of deep terminal branch of ulnar n C8, T1 |
Opponens pollicis BS | 1. Superficial branch of radial a 2. Branches from deep palmar arch and 1st palmar metacarpal, princeps pollicis, and radialis indicis aa |
Opponens pollicis O | 1. Tubercle of trapezium 2. Flexor retinaculum |
Opponens pollicis I | Lateral palmar surface and border of 1st metacarpal |
Abductor pollicis brevis N | Motor branch of median n C8, T1 |
Abductor pollicis brevis BS | Superficial branch of radial a |
Abductor pollicis brevis O | 1. Tubercles of scaphoid and trapezium 2. Flexor retinaculum |
Abductor pollicis brevis I | 1. Radial side of base of proximal phalanx of thumb 2. Dorsal digital expansion of thumb |
Flexor pollicis brevis N | Motor branch of medial n. and deep branch of ulnar n C8, T1 |
Flexor pollicis brevis BS | 1. Superficial branch of radial a 2. Branches of princeps policis and radialis indicis a |
Flexor pollicis brevis O Superficial | 1. Superficial: distal border of flexor retinaculum, distal part of tubercle of trapezium |
Flexor pollicis brevis O Deep | Deep: Trapezium and capitate bones, palmar ligaments of distal row of carpal bones |
Flexor pollicis brevis I | Superficial: Rad side of base of proximal phalanx of thumb Deep: Sesamoid bone & base of proximal phalanx |
Adductor pollicis N | Deep branch of ulnar n C8, T1 |
Adductor pollicis BS | 1. Branches from deep palmar arch 2. Princeps pollicis a 3. Radialis indicis a |
Adductor pollicis O | Oblique: Capitate, bases of 2nd & 3rd metacarpals, palmar ligament of carpus Transverse: Distal 2/3 of palmar surface of 3rd metacarpal |
Adductor pollicis I | Ulnar side of base of proximal phalanx of thumb |