License Image posterior (dorsal hand) The bones of the hand consist of 14 phalanges, 5 metacarpals, and 8 carpals. The carpal bones are the: 1. trapezium 2. trapezoid 3. capitate 4. hamate 5. pisiform (not shown) 6. triquetrum 7. lunate 8. scaphoid
Arm & Hand
Hand Muscles Thenar
License Image thenar eminence The intrinsic muscles of the hand are divided into three groups: (1) those of the thumb, the thenar eminence (2) those of the little finger, the hypothenar eminence (3) and those in the middle of the palm and between the metacarpal bones. The muscles of the thenar eminence are: adductor policis (transverse) adductor […]
Hand Muscles Hypothenar
License Image hypothenar eminence The muscles of the hand can be intrinsic (located within the hand) or extrinsic (originate outside the hand and insert within it). The forearm muscles that control the actions of the wrist, hand, thumb and fingers are extrinsic hand muscles. The hypothenar eminence is a group of three intrinsic hand muscles, […]
Carpal Tunnel
License Image The flexor retinaculum (transverse carpal ligament), is a strong, fibrous band that arches over the wrist, converting the deep groove on the front of the carpal bones into a tunnel, the carpal tunnel, through which the flexor tendons of the hand and the median nerve pass. Nine extrinsic flexor tendons pass through the carpal tunnel. They are: the flexor pollicis longus, […]
