From 1983 to 1985 we performed 114 primary hip replacements in 108 consecutive osteoarthritic patients using a non-cemented RM isoelastic femoral stem. After a mean follow-up of 8.2 years, ten patients had died, 11 hips had been revised, six patients had been lost to follow-up and two had been excluded due to severe general illnesses. Of 85 arthroplasties (in 79 patients) 14 could not be assessed because of other illness or disability. The 71 remaining were reviewed by questionnaire and radiography; an excellent or good overall functional result was found in 31, 16 were fair and 24 were poor. Radiographically, 21 of 71 stems were judged to be loose and ten showed osteolytic foci, six of these without obvious loosening. We conclude that the isoelastic RM stem shows a high rate of loosening, but that this is not always associated with a poor subjective result. Regular radiographic review is necessary. The results are worse than those reported for other uncemented stems and for cemented stems.

1. Exercise ischaemia in athletes with chronic pain over the postero-medial border of the tibia is described.

2. Fasciotomy of the compartment of the deep flexor muscles as a treatment of "shin splints" is recommended.

3. In eleven patients the symptoms were completely relieved and the athletes were able to start effective training within four weeks.

1. Intra-osseous venographs have been obtained in twenty-eight hips affected by Perthes disease and in twenty normal hips after the injection of opaque medium into the femoral neck.

2. In the normal hips the contrast medium drained rapidly into the local veins; none flowed distally into the diaphysis.

3. In the initial and in the fragmentation stages of Perthes' disease some contrast medium always flowed into the diaphysis and the flow into the local veins was greatly reduced.

4. In the restitution stage the venographs approached normal.

5. The implications of these findings are discussed.