Proceedings of Meeting of the Association of Military Surgeons of the United States. . ion of iowerpart of lower end of upper frag- fragment by driving down into it ofment into the lower fragment. the lower end of the upper frag- From specimen furrjished by Professor ment. McGraw. From specimen, No. 189, in the Museum of the Roosevelt Hospital. continued dorsal flexion falls especially upon that strong fasciculusof the anterior common ligament which passes obliquely from the middle of the carpal mass to theside and base of the styloid pro-cess of the ulna; as a result theprojection
Proceedings of Meeting of the Association of Military Surgeons of the United States. . ion of iowerpart of lower end of upper frag- fragment by driving down into it ofment into the lower fragment. the lower end of the upper frag- From specimen furrjished by Professor ment. McGraw. From specimen, No. 189, in the Museum of the Roosevelt Hospital. continued dorsal flexion falls especially upon that strong fasciculusof the anterior common ligament which passes obliquely from the middle of the carpal mass to theside and base of the styloid pro-cess of the ulna; as a result theprojection of the ulna is intensified,and in many cases the styloid pro-cess itself is torn ofT by the strain.(See Fig. 15.) As long as thedisplacement of the radial fragmentis unreduced, the carpus remainslocked in the position of supina-tion; and the anterior projection ofthe head of the ulna is perpetu-ated by the continued tension of Fig. < of this fasciculus. When the hand is roents of wrist-joint following taken up from the ground, and is aHowed to recoverfrom its posi-. in position of forcedflexion. dorsal t,;on Qf dorsal flexion, a character-istic deformity of the wrist ispresented (See Figs. 14 and 15), due to the posterior pro-jection of the carpus and lower radial fragment, the anterior pro- Fractures of the Lower Extremity of the Radius. 529 jection of the lower end of the upper radial fragment, and the an-tero-internal projection of the head of the ulna. Dissection ofthe parts in this state shows that the periosteal and aponeuroticstructures that were stripped up from the back of the proximalradial fragment, instead of being torn across, constitute now astrong band A, Fig. 16. which is made tense by the forward flexion
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectmilitar, bookyear1897
