@article{oai:niigata-u.repo.nii.ac.jp:00016098,
 author = {外山, 秀樹},
 issue = {4},
 journal = {新潟医学会雑誌, 新潟医学会雑誌},
 month = {Apr},
 note = {We treated 67 hips in 58 patients with severe osteoarthritis due to congenital dislocation of the hip by Bombelli’s valgus－extension osteotomy from 1979 and 1993. The mean age of the patients was 43. 6 years. The mean follow－up period was 9. 7 years. Thirty three of the 67 joints were followed up for more than 10 years after the operation. Of the 67 joints, thirty one were operated on by Bombelli’s valgus－extension osteotomy with the shelf operation （Corrzbined group）, and thirty six by Bombelli’s valgus－extension osteotomy only （Single group）. Clinical . evaluation was made according to the JOA hip Score System （JOA hip score）, and Kaplan－Meier survivor analysis was performed with the endpoint defined as a pain score of 20 points of the JOA hip score or less or convertion to total hip arthroplasty. Radiological evaluation was made from anteroposterior roentgenograms and the Lauenstein view. And we assessed displacement of the femoral head after the operation and effectiveness of the combined shelf operation. Total JOA hip score improved from 56. 1±11. 0 before the operation to 77. 0±16. 1 at follow－up. The Kaplan－Meier survivor analysis showed a score of 79. 40／o at the time of 10 years after the operation. The mean score for pain in the Cornbined group was significant higher than that in the Single group at the time of 6－9 years after the operation. We found a positive correlation between the acetabular angle of the weight－bearing surface and the degree of displacement of the femoral head （r＝＝O. 47）. The radiological examination showed that the condition of the Combined group was worse than that of the Single group at pre－operation, however, no significant difference was observed between the two groups in respect to the displacement of the femoral head after the operation. The results of our assessments led us to conclude that Bombelli’s valgus－extention osteotomy for OA is satisfactory as far as clinical and radiological evaluations are concerned since relief from the pain has continued for over 10 years since the operation. Combined shelf operation is effective to relieve the pain and to suppress the displacement of the femoral head supero－latelally in severeosteoarthritis of the hip.},
 pages = {204--216},
 title = {Bombelli外反伸展骨切り術の長期成績と臼蓋形成術合併の有用性},
 volume = {113},
 year = {1999}
}