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Over a ten-year period, fifty-one congenitally dislocated hips in forty-one patients, whose ages ranged from twelve to thirty-six months, required open reduction. Supplemental procedures such as derotational osteotomy, pericapsular (Pemberton) osteotomy, and femoral shortening were performed as necessary. All of the patients have been followed for at least(More)
A total of 19 triple arthrodeses were performed in 13 children aged 10 years or less for severe hindfoot deformities after failure of soft tissue releases. This was considered a salvage procedure and an alternative to talectomy. The average age at surgery was 8.4 years and average follow-up was 4 years. There were 68% excellent and good results, 16% fair,(More)
Little is known about the fate of the donor site after the central 1/3 of the patellar tendon is harvested for anterior cruciate ligament reconstruction. This study evaluated the donor site in the patellar tendon at various times after a graft from the central 1/3 of the patellar tendon was harvested. Fourteen patients were studied with magnetic resonance(More)
Multiple soft-tissue releases (MSTRs) in cerebral palsy have been advocated to improve knee motion during gait. Forty-five extremities underwent MSTRs as recommended by preoperative gait analysis. Pre- and postoperative analyses were evaluated in relation to knee motion and foot progression angle. Maximum knee flexion during swing and the foot progression(More)
Eighteen consecutively seen patients who had a congenital pseudarthrosis of the tibia were treated operatively. The mean age when the patients were first seen was four years. Seventeen previous procedures had failed: six patients had had one previous procedure; three, two previous procedures; and one, five previous procedures. At an average follow-up(More)
Eighteen patients underwent closed intramedullary femoral shortening at a children's teaching hospital. Their average age was 16 years 2 months (range 14-18 years). Clinical and radiographic union was obtained in < or = 3 months in all patients. Shortening averaged 4.4 cm (range 3-5 cm). Complications included one case of acute respiratory distress and(More)
Knee flexion contracture secondary to a severe pterygium is a disabling condition. Full surgical correction has not been possible because of the sciatic nerve and its terminal branches. Our technique to obtain full correction is to divide the nerve near the neuromuscular junction and bridge the defect with multiple sural nerve cable grafts. Microscopic(More)
This paper presents the results of a small-signal stability study conducted on a large power system. The tools and techniques applied have been reported in previous work. The novelty of this paper and study is that these tools and techniques are being applied here to a system that is at least an order of magnitude larger than the systems previously studied.(More)
Intake design for supersonic engines, in common with other engineering design problems, is application dependent and the true challenges are in meeting performance targets over the required Mach and Reynolds number ranges while complying with the multitude of constraints imposed by the aircraft/missile and its mission. The fundamentals and limitations of(More)
Sixty-one idiopathic clubfeet in 46 patients of an older population were treated by one-stage posteromedial release. Follow-up roentgenograms revealed dorsal subluxation of the tarsal navicular in 43% of the clubfeet. This abnormality is probably due to both closed manipulation and casting, and improper positioning of the navicular during posteromedial(More)