. Operative surgery. radi-alis brevior, detach with a knifethe tendon of the extensor carpiradialis longior; push outwardthese tendons along with thatof the extensor longus pollicisand the radial artery; separatethe trapezium from the carpusin the line of the incision withcutting forceps, carefully avoid-ing the radial artery; bend thehand backward to relax theextensor muscles and dissect upthe soft parts at the ulnar the second or ulnarincision at the anterior aspectof the ulna, at a point twoinches above its lower end, andbring it downward in a straightline between the bone and th
. Operative surgery. radi-alis brevior, detach with a knifethe tendon of the extensor carpiradialis longior; push outwardthese tendons along with thatof the extensor longus pollicisand the radial artery; separatethe trapezium from the carpusin the line of the incision withcutting forceps, carefully avoid-ing the radial artery; bend thehand backward to relax theextensor muscles and dissect upthe soft parts at the ulnar the second or ulnarincision at the anterior aspectof the ulna, at a point twoinches above its lower end, andbring it downward in a straightline between the bone and theflexor carpi ulnaris to the mid-dle of the palmar aspect of the fifth metacarpal bone ; raise the posterior lipof the incision ; expose at the insertion and divide there the tendon of the ex-tensor carpi ulnaris, dissect it from its groove without separation from thetissues overlying it; separate the extensors of the digits from the carpus,divide the dorsal and internal lateral ligaments of the wrist joint. Flex the. Pig. 418.—Listers incisions. 1. Posterior radialincision. 1. Anterior ulnar incision. a. Ex-tensor carpi radialis brevior. b. Extensor carpiradialis longior. c. Extensor longus Extensor communis digitorum. e. Extensorindicis. OPERATIONS ON BONES. 405 carpus, expose the anterior surface of the ulna, closely hugging the bone toavoid injury to the ulnar vessels and nerves, open the articulation of thepisiform bone, and cut at the base the unciform process with pliers. Dividethe anterior ligament of the wrist joint; sever the carpus from the meta-carpus with bone-cutting forceps; extract the carpus through the ulnar in-cision, dividing restraining ligamentous connections therewith at the sametime; cause the ends of the radius and ulna to protrude through the ulnarincision by forcible eversion of the hand; remove from these bones all dis-eased tissue, disturbing as little as possible the extensor tendons of the thumb;remove disease from metacarpal extremi
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