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These tendons, along with those of flexor digitorum profundus, are enclosed by a common flexor sheath. The tendons attach to the anterior margins on the bases of the intermediate phalanges of the four fingers. These tendons have a split (Camper's Chiasm) at the end of them through which the tendons of flexor digitorum profundus pass.
The superficial muscles have their origin on the common flexor tendon. [2] The ulnar nerve and artery are also contained within this compartment. [2] The flexor digitorum superficialis lies in between the other four muscles of the superficial group and the three muscles of the deep group. This is why it is also classified as the intermediate ...
The intrinsic muscle groups are the thenar and hypothenar (little finger) muscles; the interossei muscles (four dorsally and three volarly) originating between the metacarpal bones; and the lumbrical muscles arising from the deep flexor (and which are special because they have no bony origin) to insert on the dorsal extensor hood mechanism.
the flexor digitorum profundus acting on the proximal and distal joints, and the flexor digitorum superficialis acting on the proximal joints mainly by the lumbricals and interossei, the long extensors having little or no action upon these joints thumb the flexor pollicis longus: the extensor pollicis longus
Flexor digitorum superficialis and profundus, lumbricals, and interossei, assisted in the case of the little finger by the flexor digiti minimi brevis: extensor digitorum communis, extensor indicis proprius, and extensor digiti minimi muscle: thumb: flexor pollicis longus and brevis: extensor pollicis longus and brevis
Annular and cruciform parts of fibrous sheath over (synovial) flexor tendon sheaths. Insertion of flexor digitorum profundus tendon. Insertion of flexor digitorum superficialis tendon. Midpalmar space (deep to flexor tendons and lumbrical muscles). 5th finger (synovial) tendinous sheath. Common flexor sheath (ulnar bursa). Hypothenar muscles.
The common flexor sheath of hand or the ulnar bursa [1] is a synovial sheath in the carpal tunnel of the human hand. It contains tendons of the flexor digitorum superficialis and the flexor digitorum profundus , but not the flexor pollicis longus .
Annular and cruciform parts of fibrous sheath over (synovial) flexor tendon sheaths. Insertion of flexor digitorum profundus tendon. Insertion of flexor digitorum superficialis tendon. Midpalmar space (deep to flexor tendons and lumbrical muscles). 5th finger (synovial) tendinous sheath. Common flexor sheath (ulnar bursa). Hypothenar muscles.