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.

    12/148 (page 12)
    be tilted out, of its norma! situation, in the manner vve know it to be in its simple and compound dis- locations. Of this accident so many cases have been recorded as to leave no doubt on this point; and I shall add another instance, which has recently come under my own observation and treatment, at the Manchester Royal Infirmary ; and which, from the direction in which the bone was thrown, is, so far as my knowledge and reading extend, without a parallel. MUSCLES CONNECTED WITH THE FOOT, AND IMPLICATED IN ITS DISLOCATIONS. Above the bones and joints of the instep is situated the extensor brevis digitorum communis muscle, which arises (partly fleshy and partly tendi- nous), from the os calcis, and terminates in four slender tendons, which pass inwards to the great and three adjoining toes. This muscle is not materially implicated in dislocations, except in the circumstance of its tendons being displaced, if not ruptured, in luxation directly forwards, and forwards and inwards; and in that of drawing, in some mea- sure, the toes outwards, and the metatarsal bones triflingly backwards, when the astragalus is re- moved. Superimposed on the former muscle, and running in their thecae to the four lesser toes, are the ten- dons of the extensor longus; which, when the astragalus is dislocated forwards and outwards, will be either ruptured, or separated, so as to girt the bone; and in excision of the astragalus, this com- mon extensor of the smaller toes will assist the