@article{oai:sapmed.repo.nii.ac.jp:00015349,
 author = {横串, 算敏},
 issue = {3},
 journal = {札幌医学雑誌 = The Sapporo medical journal, The Sapporo medical journal},
 month = {Jun},
 note = {In order to observe remodeling of the new acetabular roof after pelvic osteotomy, an experimental study was performed on dogs. In 66 immature dogs, 2-3 kilograms in weight, the left hip was operated under general anesthesia. The peripheral acetabular joint surface was osteotomizecl subchondrally in two different ways, first in a domic fashion and second in an angular fashion. Then a full-thickness defect was created on the weight bearing area of the acetabular roof. The changes of the new acetabular roof and the femoral head were observed roentgenologically, macroscopically and histologically. The observation periods ranged from 2 to 24 weeks. The results obtained are summarized as follows : 1. A “step demormity” of the acetabular surface disappeared with adaptive remodeling of the acetabulum at 4-8 weeks. The operated hip then obtained satisfactory congruency between the new acetabular roof and the femoral head at 24 weeks in the domic osteotomy group. 2. At 2 weeks in the domic osteotomy group, most of the defect were filled with granulation tissue which extended smoothly over antero-posterior edges of the defect. Tissue color changed to glossy white and the tissue almost had the appearance of the surrounding cartilage at 12 weeks. The articular surface was then adapted in good opposition to the femoral head. 3. In the domic osteotomy group, a major portion of the defect was repaired with connective tissue derived from subchonclral bone marrow which underwent metaplasia to fibrocartilage up to 12 weeks. The degenerative changes in the articular surface and the deformity of the femoral head were seen in both group, but more severe changes were recognized in the angular osteotomy group than the domic group. 4. It was observed that these above-mentioned changes in the acetabulum occurred at a slower and quantatively inferior rate in the angular osteotomy group. 5. From the findings in this experimental study, it was consulted that a new acetabular arch was formed by differentiation and adaptive changes of the connective tissue derived from subchonclral bone marrow accompanied with remodeling of the bony acetabular roof by itself. The repairing process was influenced by biomechanical factors, especially congruency between the newly formed acetabular roof and the femoral head.},
 pages = {303--329},
 title = {骨盤骨切り術 (河邨法) 後の臼蓋アーチ修復に関する実験的研究 : ドーム型骨切り群と角状骨切り群との比較},
 volume = {49},
 year = {1980}
}