abductor pollicis brevis


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abductor pollicis brevis

one of the three thenar muscles. It abducts the thumb, principally at the metacarpophalangeal joints.
References in periodicals archive ?
Thus, carpal tunnel syndrome (CTS) is the entrapment neuropathy of the median nerve that causes paresthesia, pain, numbness, and weakness of the flexor pollicis brevis, opponens pollicis, and abductor pollicis brevis in the innervation area of the median nerve because of its compression in the wrist (1).
Physical examination revealed proximal muscle weakness of the upper and lower limbs (muscle test 3/5), and weakness of the distal muscles of both hands, in the abductor pollicis brevis, opponens pollicis, flexor pollicis and the first and second lumbricals particularly.
Median study, recording abductor pollicis brevis and stimulating wrist and antecubital fossa
The atrophy and the weakness of the abductor pollicis brevis and interosseous muscles had also increased.
11) Insertion of the tendon into abductor pollicis brevis was observed by Valeria et al in 2007.
Bilateral median motor nerve conduction studies on the wrist-elbow segment recording from the abductor pollicis brevis (APB) muscle, and bilateral ulnar motor nerve conduction studies on the wrist-elbow, across elbow, elbow-axilla and the axilla-erb segments recording from the abductor digiti minimi (ADM) muscle were done using superficial electrodes.
The tendon of this belly is divided in to 6 slips and these slips are attached to one slip to abductor pollicis Brevis, 2 slips to the anterolateral aspects of the base of first metacarpal, one slip to Trapezium, one slip to base of proximal phalanx of thumb and one slip to dorsal digital expansion of thumb.
52 NCS: Nerve Conduction Study, APB: Abductor Pollicis Brevis, ADM: Abductor Digiti Minimi, EDB: Extensor Digitorum Brevis, FHB: Flexor Hallucis Brevis