Licence: Public Domain Mark
Credit: Surgical essays / by Astley Cooper and Benjamin Travers. Source: Wellcome Collection.
Provider: This material has been provided by King’s College London. The original may be consulted at King’s College London.
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![around ihe capsular ligament, and the trochan- ter major, and a little below it, was enlarged ; we find, therefore, by this dissection, what ap- pears in the human subject after this accident, happens in other animals; and motion, want of apposition, and pressure, with the little ossific action, in the head of the bone under these circumstances, produce the deficiency of bony union, as in man. Having ascertained this, I was next anxious to learn if the head and neck of the thigh-bone would unite under circumstances in which ap- position and pressure were maintained ; and for this purpose made the following experiment: EXPERIMENT III. Longitmii- I divided the neck and head of the thigh-bone naifrauuir. ]QIygitudmally, by placing a knife on the ante- rior part of the trochanter major, and striking it down towards the acetabulum. The dog was killed twenty-nine days after, and the following appearances presented themselves : A portion of the trochanter major had been broken off, and was only united by cartilage ; the : head and neck of the bone which had been lon- gitudinally broken, were united,; but the neck was joined by a larger quantity of ossific deposit than that which joined the separated portions of | the head of the bone, and so irregularly as to make a beautiful preparation, and shews the circumstance most clearly. (See Plate.) This bone may be seen in the collection at St. Tho- mas’s Hospital.—Whether the union began ex- ternally to the ligament, and proceeded inwards,](https://iiif.wellcomecollection.org/image/b21304956_0048.jp2/full/800%2C/0/default.jpg)
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