PAST LETTERS FROM THE PRESIDENT
Yasushi
Takemura, Takashi Atsumi, Toshihisa Kajiwara, Yasunari
Hiranuma, Satoshi Tamaoki, Yasuhiro Asakura
Department of Orthopaedic Surgery, Showa University, Fujigaoka Hospital
Purpose: We performed rotational open wedge osteotomy ( ROWO ) for Perthes’ disease with an extensive lesion. With this technique, femoral head was rotated anteriorly, the postero-lateral viable segment was moved below the lateral acetabular roof consequently with inter trochanter osteotomy. We reviewed the results of this procedure radiographically.
Patients and Methods: Twenty two cases over 2 years follow up term after the operation were investigated. Nineteen hips of 19 patients were boys and 3 hips of 3 patients were girls. The patients’ mean age at the time of the operation was 7 years and 9 months and the mean follow up term was 6.5 years. There were 15 hips in fragmentation stage, 7 hips in healing stage. In Catterall Grouping, 19 hips were in Group III, 3 hips were in Group IV. The mean rotation angle was 36 degrees, and mean varus angle was 21 degrees. We analyzed Stulberg classification and Mose’ rating at the final X-ray.
Results: The Stulberg classification on final X-ray, 3 hips were in class I, 17 hips were in class II, 2 hips were in class III, and class IV and V were not seen. In Mose’ rating, all cases were in good or fair. We conclude rotational open wedge osteotomy is benefit procedure for Perthes’ disease with an extensive lesion.