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Thenar Group

Nerve, blood supply, origin, insertion

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
Created by: PippaODU



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