Archive image from page 178 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana01todd Year: 1836 ABNORMAL CONDITION Of THE ANKLE-JOINT. 163 synovitis, with purulent deposition in the joint, and in a young man aged twenty, but have not observed it ever to occur in older subjects ; and conclude that it is one of the consequences of synovitis of the ankle-joint, which is only to be noticed at an age when the epiphyses are not yet consolidated with the shaft of the tibia. In these very acute attacks of inflamma- tion, its ravages are seldom confined to the s
Archive image from page 178 of The cyclopædia of anatomy and. The cyclopædia of anatomy and physiology cyclopdiaofana01todd Year: 1836 ABNORMAL CONDITION Of THE ANKLE-JOINT. 163 synovitis, with purulent deposition in the joint, and in a young man aged twenty, but have not observed it ever to occur in older subjects ; and conclude that it is one of the consequences of synovitis of the ankle-joint, which is only to be noticed at an age when the epiphyses are not yet consolidated with the shaft of the tibia. In these very acute attacks of inflamma- tion, its ravages are seldom confined to the structure which seemed to be the 'point du depart' of the disease; the cartilages are in some cases removed from the tibia, fibula, and upper surface of the astragalus with astonishing rapidity; the porous surface of the bones has also been found exposed, and their substance to afford evidence of its having been in a state of inflammation. Surgeons should ever bear in mind, that the synovial membrane of the ankle-joint passes very far forwards on the upper surface of the astragalus, even as far as within a few lines of the junction of this bone with the os naviculare, so that an accidental wound high upon the instep might very readily give rise to a fatal synovitis of the ankle-joint. Moreover, by an experiment on the dead sub- ject, it may be shown that a very slight direc- tion too much upwards of the edge of the knife when the operation of partial amputation, ac- cording to Chopart, is performed, may wound the most anterior part of the synovial sac of the ankle-joint, and the consequences of such a mishap might prove fatal, or at all events greatly aggravate the ills which even without such cause too frequently follow Chopart's operation. Again, the synovial membrane extends very low down, even to the lowest point of the inner side of the peroneal malleolus, along the outer or fibular surface of the astragalus (fig. 61, «). It has very frequently happened to the wri- ter's
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