Anatomico-chirurgical observations on dislocations of the astragalus / by Thomas Turner.

  • Turner, Thomas, (1793-1873)
Date:
1843
Catalogue details

Licence: Public Domain Mark

Credit: Anatomico-chirurgical observations on dislocations of the astragalus / by Thomas Turner. Source: Wellcome Collection.

Provider: This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.

    17/148 (page 17)
    the cause of dislocation forwards. In one case given by Baron Dupuytren, dislocation forwards occurred in consequence of jumping from the top of a coach, and the patient pitching on his heel with all his weight. Other cases are recorded of dislocation forwards, forwards and inwards, and forwards and outwards, in persons falling from heights, and pitch- ing on the heel, or sole, or side of the foot. Doubt- less, in some of these cases the main concussion is received on the calcaneum, which is thrown by the foot into sudden extension, and the astragalus is thrust by the heel bone from its situation at the ankle. When the foot is fully flexed upon the leg, and a force applied to the superior part of the tuberosity of the os calcis, and to the under surface of the fore part of the foot, the astragalus might be thrown backwards, an effect much favoured by the extreme depression which the heel would experience, the greater distance at which the astragalus would be separated from the tibia, and consequently the in- crease of space gained backwards for the escape of the bone. The mode in which dislocation back- wards may, in this way, occur, is well illustrated in the case of Mr. Goss, of Bristol, where, it would appear, the foot became forcibly flexed ; in which occurrence, as already remarked by Mr. Phillips, the axis of the tibia becomes oblique in relation to the articular surface of the astragalus, in front of which the shin-bone is precipitated, in obedience to the impulsion which it receives from the weight of the body. This fact is equally confirmed by vyhat occurred in the second case given by the same author. Here the patient, whilst running very