. A treatise on dislocations and fractures of the joints. g, putsout his hand to save himself, and falls upon the palm, so that a dislo-cation is produced, the radius and ulna are forced forwards upon theligamentum carpi annulare, and the carpal bones are thrown back-wards ; whilst if a person falls upon the back of the hand, the radiusand ulna will be thrown upon the posterior part of the carpus andthe carpus itself will be forced under the flexor tendons, which passbehind the ligamentum carpi annulare. Symptoms.—The appearances of the first dislocation are these- aconsiderable swelling is pr
. A treatise on dislocations and fractures of the joints. g, putsout his hand to save himself, and falls upon the palm, so that a dislo-cation is produced, the radius and ulna are forced forwards upon theligamentum carpi annulare, and the carpal bones are thrown back-wards ; whilst if a person falls upon the back of the hand, the radiusand ulna will be thrown upon the posterior part of the carpus andthe carpus itself will be forced under the flexor tendons, which passbehind the ligamentum carpi annulare. Symptoms.—The appearances of the first dislocation are these- aconsiderable swelling is produced by the radius and ulna, on the forepart of the wrist, and a similar protuberance upon the back of the OF THE WRIST-JOINT. 419 wrist by the carpus, with a depression above it; the hand is bent back,being no longer in the line with the fore-arm. In the other dislocation these symptoms are reversed, but it is easyto see that in both cases two swellings will be produced, one by theradius and ulna, and the,other by the bones of the carpus, according. to the direction in which they are thrown; and these become thediagnostic signs of the accident. Diagnosis.—Severe falls upon the palm of the hand will producesprains of the tendons on the fore part of the wrist, and occasion avery considerable swelling of the flexor tendons, opposite the wrist-joint. This accident assumes the appearance of dislocation, but mayalways be distinguished from it by the existence of one swelling only,which does not appear immediately after the injury is received, butsucceeds it gradually. And further, if the surgeon be called directlyafter a dislocation has happened, there is then a great flexibility ofthe hand, as well as distortion, and the extremities of the radius andulna on one side, and of the carpal bones on the other, are easily de-tected. Moreover, the relative situation of the styloid processes ofthe radius and ulna, with the carpal bones, is altered in dislocation,but not in the sprain.
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectfractur, bookyear1844
