Biomedical subjects
Publications and source records attributed to Kazuyuki Takamura.
We report a case of physeal arrest secondary to extravasation of an intravenous infusion in a neonate. The ankle was reconstructed according to the Gruca operation followed by callus distraction lengthening.
Three cases of sternal segment dislocation in children are described. The primary mechanisms were direct blow in a 4-year-old boy, indirect forces in a 3-year-old boy, and osteomyelitis in a 10-year-old boy. The two former cases were dislocated at the junction of the manubrium with the sternal body, and the latter case was at the junction of the first and second sternal segments. The dislocated segments were gradually rotated for approximately 2 weeks and were finally stabilized after rotation. While in the dislocated state, the patients were observed conservatively, although all the dislocated segments were remodeled. Surgical treatment of sternal segment dislocation is not inevitable.
The authors reviewed the results of the Pemberton osteotomy as treatment of developmental dysplasia of the hip in 17 hips treated after 7 years of age. Twelve hips required one or more concomitant surgical procedures. The average age at the time of the osteotomy was 9.3 years, and the average follow-up was 9.4 years. Using modified McKay's clinical criteria, 14 hips were classified as excellent or good. Using Severin's radiographic classification, 13 hips met class I-II criteria. Two patients who preoperatively showed Kalamchi and MacEwen's group IV severe avascular necrosis, plus two patients whose necessary acetabular coverage was not achieved by the Pemberton osteotomy without femoral varus osteotomy, were found to meet Severin's class III-IV criteria. Pemberton osteotomy can be an effective procedure for older children in whom progressive acetabular development is not expected, although this osteotomy may have to be combined with other operative procedures.