Archive image from page 727 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0402todd Year: 1849 1512 WRIST-JOINT (ABNORMAL ANATOMY). same time that the ulna has passed so far downwards on the back of the carpus as to reach even to the upper extremity of the metacarpal bone of the little finger (see Jig. 929.). The radius at its lowest part, besides being thus shorter than the ulna, is much less salient on the dorsum of the carpus. The upper extremity of the carpus and the Fig. 929, Second view of the same deformity as Fig. 928. hand are placed, as l
Archive image from page 727 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana0402todd Year: 1849 1512 WRIST-JOINT (ABNORMAL ANATOMY). same time that the ulna has passed so far downwards on the back of the carpus as to reach even to the upper extremity of the metacarpal bone of the little finger (see Jig. 929.). The radius at its lowest part, besides being thus shorter than the ulna, is much less salient on the dorsum of the carpus. The upper extremity of the carpus and the Fig. 929, Second view of the same deformity as Fig. 928. hand are placed, as lias been mentioned, an- teriorly to, and somewhat above, the lowest extremity of the radius and ulna, and conse- quently the measurement of the antero-pos- terior diameter of the wrist is much increased ; the whole forearm is somewhat bowed, pre- senting on its anterior aspect a concavity in the longitudinal direction. Near the wrist- joint the tendons of the flexor carpi ulnaris on the inner side, and of the flexor carpi ra- dialis on the outer, or radial side, are thrown into strong relief, and thus contribute to give the quadrilateral form to the wrist above alluded to. Since the writer made this communication to the Surgical Society of Dublin, he has seen other cases of congenital luxation at the wrist-joint of both the bones of the forearm backwards on the dorsum of the carpus. They so strongly resembled the cases just now adduced, that he refrains from entering into particulars. From all these last men- tioned, the individuals practically suffered little from the defect. From the cases the writer has seen or in- vestigated, he may draw the following conclu- sions : — 1st. That the case of D. O'Neil, brought before the Pathological Society of Dublin, Dec. 15th, 1838, by the writer, was the first example laLl before the profession with the intention of proving that such a lesion as a congenital luxation of the wrist-joint existed. 2nd. That Cruveilhier's case, adduced f
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