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The lateral portion supplies a short, stout branch to certain of the muscles of the ball of the thumb, viz., the abductor pollicis brevis, the opponens pollicis, and the superficial head of the flexor brevis, and then divides into three proper palmar digital nerves of median nerve (proper volar digital nerves):
The proper palmar digital nerves of the ulnar nerve are nerves of the hand.. The superficial branch of the ulnar nerve divides into a proper palmar digital nerve, which supplies the medial side of the fifth digit and a common palmar digital nerve which divides into two proper palmar digital nerves that supply the adjacent sides of the fourth and fifth digits.
The medial portion of the nerve divides into two common palmar digital nerves (common volar digital nerves). The first of these gives a twig to the second lumbricalis and runs toward the cleft between the index and middle fingers , where it divides into two proper digital nerves for the adjoining sides of these digits;
It then divides into four digital nerves, which are distributed as follows: the first supplies the ulnar side of the thumb; the second, the radial side of the index finger; the third, the adjoining sides of the index and middle fingers; the fourth communicates with a filament from the dorsal branch of the ulnar nerve, and supplies the adjacent ...
Brachydactyly type D, also known as short thumb, [3] [1] stub thumb, [5] [6] or clubbed thumb, [5] [6] is a genetic trait recognised by a thumb being relatively short and round with an accompanying wider nail bed. The distal phalanx of thumbs is approximately two-thirds the length of full-length thumbs.
The digital branch to the index finger also supplies the first lumbrical. The common palmar digital branch divides further into two branches. Both the medial and lateral branches supply the second and third interdigital clefts with adjoining index, middle, and lateral half of ring finger. The lateral branch also supplies the second lumbrical. [3]
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The dorsal branch of the ulnar nerve divides into two dorsal digital branches; one supplies the ulnar side of the little finger; the other, the adjacent sides of the little and ring fingers. It also sends a twig to join that given by the superficial branch of the radial nerve for the adjoining sides of the middle and ring fingers, and assists ...