野生シカにみられた下顎骨骨折の自然治癒例について

抄録

The healed fractures of the mandibular bones on both sides were found in the specimen of a wild Japanese sika deer, Cervus nippon centralis KISHIDA, a subadult male with the length of head and body of 851.0 mm obtained from Kanagawa Prefecture in Japan, on March in 1965 (Pl. 1. fig. 1) .
The mandibles on both sides were fractured in the region of each third molar, about seven-tenth of the length of the mandibles (left: 200.7 mm, right: 200.3 mm) from the tip of the jaw. The tored teeth by the cause from the fractures were found in a part of the second molar and the great part of the third molar except roots on the left mandible, and in a part of the third molar on the right one (Pl. 1. fig. 2-6) .
There was a clear evidence of healing or junction, and the well-marked excessive production of callus in the natural repair of the fractures was observed around the affected region.