1 . The incidence of hydatid disease in bone is discussed and the relevant literature reviewed. 2. The parasitology and methods of control are described. 3. The pathology of hydatid disease affecting bone is described. 4. An analysis of fifty-three cases is made showing that the disease commonly occurs in the spine, the long bones, the ribs and scapula, and the pelvis and hip. The treatment and prognosis of each group is discussed. 5. Three cases of hydatid disease of bone occurring in animals are described.
1. Certain macroscopical and microscopical features of the tendo calcaneus of the rabbit are described and illustrated, and the vascularisation as revealed by Spalteholz clearing is presented. 2. The vessels of the epitenon are chiefly derived from proximal and distal sources. 3. The vessels of the paratenon are derived from the main arteries of the leg. 4. The two vascular systems are largely independent of each other except along one edge of the tendon by way of a mesotenon. 5. The paratenon, epitenon and mesotenon and the related vessels are comparable to those found in tendons with synovial sheaths. By inference and from evidence obtained by dissection on the living human subject it is suggested that the arrangements are similar in the human tendo calcaneus. 6. Considerable friction develops on movement between the surfaces of the paratenon and epitenon. This might be significant in pathological states of the human tendon.
1. A new operation of body-to-body intervertebral fusion by grafts introduced through a posterior approach is described. This is a preliminary report of early results, with follow-up to two years, which seems to be encouraging. 2. In spondylolisthesis, abnormal mobility of the loose posterior neural arch is believed in itself to cause nerve root pressure, and excision of the arch is an important part of the operation. 3. In the few cases where spinal fusion is needed after removal of a prolapsed intervertebral discâand the proportion is now very lowâposterior intervertebral fusion has proved very satisfactory.
1. A case of Volkmann's ischaemic contracture, in which function was greatly improved by a muscle slide operation, is described. 2. The possibility of regeneration of muscle after ischaemia is reviewed in the light of recent research. 3. Injection experiments suggest that the forearm flexors, like the gastroenemius,are supplied by end arteries.
