1. Open osteotomy near the tuberosity of the radius to enable correction of fixed supination deformity of the forearm in children is an alternative to Blount's closed osteoclasis of both bones.

2. In five out of six cases with residual obstetrical palsy substantial correction of the deformity was maintained.

3. The cosmetic result was impressive, especially in girls, but an improved function was also observed. If the hand is paralysed, correction of supination facilitates reconstruction.

4. Complications such as angulation, displacement, delayed union and synostosis of the proximal radius and ulna did not affect the final results.

5. With the method described a more or less permanent "blocking" of rotatory movement in the forearm was observed but this did not seem to impair the functional result.

1. The belief that the cessation of spinal growth and curve progression coincides with the completion of growth in the iliac apophyses has been confirmed in a review of material from 224 cases. This applies also to paralytic curves.

2. In a high number of cases this ossification centre showed an asymmetrical development on the two sides of the pelvis. The appearance of a separate posterior centre of ossification is also common, and probably represents an advanced stage in the growth of the iliac apophysis.

3. Menarche and the growth of the apophyses of the vertebral bodies almost always occurred in advance of the iliac apophyses. They should be regarded as early signs of maturation, not reliable in the prognosis of curve progression.

4. The growth of the iliac apophysis appeared to be unaffected by poliomyelitis.