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This study showed that TAA improved the quality of life and that return to recreational activities was generally possible but the return to impact sport was rarely possible.

We retrospectively reviewed the results of using a biplanar chevron osteotomy performed on patients who presented with hallux valgus deformities with an increased distal metatarsal articular angle (DMAA). The study included 17 feet (14 patients) of 12 women and 2 men. The average follow-up was 33 months. The average American Orthopaedic Foot and Ankle Society Hallux Metatarsophalangeal-Interphalangeal Clinical Rating Score was 91. Ten of the 14 patients (13 of 17 feet) stated that they would choose to undergo the procedure again. The hallux valgus angle was improved from an average of 22 degrees to 18 degrees, the intermetatarsal angle from 11 degrees to 9 degrees, and the DMAA from 16 degrees to 9 degrees. We have demonstrated this procedure to be useful in the treatment of symptomatic bunion deformities with an increased DMAA.

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Two patients had displaced femoral neck fractures at the bone-screw interface after in situ fixation of slipped capital femoral epiphysis. Both fractures required closed reduction and internal fixation. Inadvertent derotation of the femur occurred in both patients and allowed fixation of the fracture through the intramedullary canal of the femoral neck without anterior penetration of the pins into the joint; a nonunion occurred in this patient. The other patient developed chondrolysis and avascular necrosis. Because the femoral neck is vulnerable to stress fractures in young adults, there is some question whether pins placed anteriorly through the femoral neck cortex should be removed.