The greater part of the shaft is enlarged. Posteriorly quite rough ; and toward the lower part is a small seques- trum, 2 in. long, and situated in a broad, superficial, and rather smooth cavity. The excavation, the result of the operation, is 2J in. long, in. wide, and generally about an inch deep. The bone is very heavy, and the central cavity filled up, as in cases of chronic inflammation ; but a sinus is seen extending from it to the cavity that holds the sequestrum. 1856. Dr. H. J. Bigelow.
1295. Very extensive caries of the shaft of the tibia; mostly superficial, but in some parts quite deep. Also a thin, in. at the widest part, is seen in the process of exfoliation. In two or three other places there are small exfoliations ; and toward the lower third nearly the whole thickness of the bone seems to be more or less necrosed to a small ex- tent. (See No. 1274.) 1847. Dr. J. G. Warren.
1296. A portion of the shaft of the femur, showing a superficial exfoliation in progress 2 by 1 in. in extent. Bone very solid. 1847. Dr. J. C. Warren.
1297. A superficial sequestrum from the tibia, 7f in. in length, and involving a large part of the circumference of the bone.
From a healthy boy, ten years of age. Duration of dis- ease eight months, and no assignable cause. Redness, swell- ing, and severe pain the first few weeks ; then relieved by the formation of an abscess, and not much complaint after- ward. On admission into the hospital (139, 55), there were four sinuses ; and the bone being loose, was re- moved. Did well. 1868. Dr. H. J. Bigelow.
1298. Necrosis of nearly the whole shaft of the tibia; from a child. The surface of the bone is very extensively de- nuded, and to some extent its entire thickness is involved. There is some thickened and not very old periosteal deposit external to it ; and at the upper extremity some of the old bone that is alive, and from which the dead bone had not yet separated. 1847. Dr. J. C. Warren.
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