. A practical treatise on fractures and dislocations. e-neath and in front of the astragalus. Thecause in the former is forcible abduction of thefoot; in the latter it appears to be either abduc-tion and eversion of the foot, or great violenceexerted directly against the inner side of thefoot, or the outer side of the lower part of theleg. The dislocation may be primarily or sec-ondarily compound, the wound in the skin cor-responding to the head of the astragalus whichmay project entirely through it. The tendonof the tibialis anticus sometimes lies along theinner and upper part of the neck of
. A practical treatise on fractures and dislocations. e-neath and in front of the astragalus. Thecause in the former is forcible abduction of thefoot; in the latter it appears to be either abduc-tion and eversion of the foot, or great violenceexerted directly against the inner side of thefoot, or the outer side of the lower part of theleg. The dislocation may be primarily or sec-ondarily compound, the wound in the skin cor-responding to the head of the astragalus whichmay project entirely through it. The tendonof the tibialis anticus sometimes lies along theinner and upper part of the neck of the astrag-alusj which is thus tightly held between it andthe calcaneo-scaphoid ligament. In a case of the oblique form quotedby Malgaigne, in which the patient died four days after the acci-dent, the outer part of the interosseous ligament in the sinus tarsi w^asentire ; the inner part was ruptured. In one of the complete outwardform, of which the specimen was dissected, and reported by Nelaton ^ ^ Nelaton: Bull, de la Soc. Anatomique, 1835, p. Subastragaloid dislocationoutward. (Malgaigne.) DISLOCATIONS AT OR NEAR THE ANKLE. 899 (Fig. 459), the head of the astragalus rested against the inner side ofthe scaphoid, and its posterior lip was engaged in the groove in theupper surface of the calcaneum ; the lower part of the internal lateralligament, the interosseous ligament, and the astragalo-scaphoid liga-ment were ruptured, and the posterior and outer part of the externalmalleolus was broken. The calcaneo-cuboid joint may also be injured, and the bones partlydisplaced from each other. The symptoms in the oblique variety are the marked abduction ofthe foot, more or less eversion, and marked prominence of the head ofthe astragalus on the inner side; the head is sometimes so depressedthat the condition may be mistaken for inward dislocation of theastragalus. In a case reported by Boyer the displacement was slight,and was at first overlooked; when recognized, it was irreducibl
Size: 954px × 2620px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfractur, bookyear1912
