1. In seventeen cases of tuberculosis of the hip in children with severe destruction of the joint arthroplasty was done using full thickness skin from the abdominal wall as the interposing material.

2. The results, after a follow-up on the average of three years, show that one-third of the cases are very satisfactory, one-third are fair and one-third show no movement.

1. Contracture of parts of the quadriceps muscle is not uncommon and is often accompanied by tightness of the ilio-tibial tract. It is suggested that this may follow intramuscular injections.

2. Recurrent dislocation of the patella can be a consequence of this muscle contracture.

3. Division of the ilio-tibial tract and lengthening of the fibrotic elements of the quadriceps can prevent further dislocation and restore good function.

1. Myositis ossificans as a complication of tetanus is described.

2. Ossification in mesodermal tissue is briefly discussed.

1. Fifty-six cases of tibialis posterior transplant for drop foot are reported.

2. The results are known to be satisfactory in forty-nine of the fifty-six cases.

3. Serious complications have been few.

4. Re-education has been easy in the great majority of cases.