. Medical and surgical therapy. )almar arch. It sends motor filaments to all the musclesof the hypothenar eminence, to the two inner lumbricales, to all THE ULNAR NERVE 91 the pal mar and dorsal ivterossei. and tlieti ends by su])plying theadductor poll iris iiiul tho inner head of the Jlrxor hrcvis poll ids. AMast()mosis of the ulnar with the median nei-ve occurs twice—in tlio hand by incans of its superficial palmar branch, and insidothe llexor brevis pollicis nuiscle by means of its dee|) ])almar branch. PHYSIOLOGY The ulnar nerve supplies most of the musc^les of the hand. Vho Jlfxor carpi
. Medical and surgical therapy. )almar arch. It sends motor filaments to all the musclesof the hypothenar eminence, to the two inner lumbricales, to all THE ULNAR NERVE 91 the pal mar and dorsal ivterossei. and tlieti ends by su])plying theadductor poll iris iiiul tho inner head of the Jlrxor hrcvis poll ids. AMast()mosis of the ulnar with the median nei-ve occurs twice—in tlio hand by incans of its superficial palmar branch, and insidothe llexor brevis pollicis nuiscle by means of its dee|) ])almar branch. PHYSIOLOGY The ulnar nerve supplies most of the musc^les of the hand. Vho Jlfxor carpi uhvaris is one of the flexor muscles of the wrist;it inclines it to the inner side, but im[)arts no movement of opinion of Duchenne (of Boulogne) is <|uite correct. The two inner heads of the flexor profunxUis digitoram flex the. Fm. 34.—Palmar interussei. Fiu, 35.—Dorsal iutcrossci. second phalanges, and particularly the terminal [)halango8 of thering and little fingers. A brief description of the anatomy will make the physiology ofthe interossci clearer. The interossei are seven in number : four dorsal and three palmar;iigs. 34, 35, and 36 show their insertions. The lower tendons of both tlioso sets of muscles are attached tothe extensor tendon. The dorsal interossci, which are the most important, have a lowertendon which is divided into two portions. The short iKjrtionis attached to the upper extremity of the first phalanx on the sidecorres[)on(ling to the metacarpal bone, where the insertion of thisnuiscle is more widespreiul ; the long portion expands into a long,wide meiubrano which ends in the toiulon of the eornxspondingextensor from the first phalanx to the terminal. 92 CLINICAL FORMS OF NERVE LESIONS With this long head of the terminal .tendon of the interossei thetendon of the lumbricales unites
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Keywords: ., bookcentury1900, bookdecade1910, bookpub, booksubjecttherapeutics
