The results in 102 acetabuloplasties have been assessed in eighty-six patients, with a minimum follow-up of five years. Clinical and radiological assessment was carried out according to a score system very similar to that used in previous studies, and the results were expressed as excellent, good, fair and poor according to the score obtained. Any hip requiring further stabifising procedures was automatically grouped as a failure. Subtrochanteric femoral osteotomy was used when femoral anteversion was excessive. The results revealed that 73 per cent of the hips were satisfactory (excellent or good) overall, but that a steady deterioration was evident when the five-and fifteen-year groups were compared. Few of the hips were regarded

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1. Two cases of syphilitic involvement of the spinal column are described, illustrating the presentation and pathology of the disease. 2. The possibility of increased incidence of syphilitic disorders of bone and joint is considered in the light of recent statistics, and the need for awareness of the disease in its various forms is emphasised. 3. The problems of diagnosis are discussed.

1. An ancillary diagnostic technique using Fluorine-l8 or Strontium-87m is described, and has assisted in the correct diagnosis of fifty-two patients admitted with the provisional diagnosis of infective spondylitis. 2. The technique is of particular value in the assessment of reactivation of chronic spinal infections and in the differential diagnosis of atypical lesions.