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    Epiphyseal distraction. Hemichondrodiatasis.

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    Hemichondrodiatasis is a technique of closed, gradual, asymmetric distraction of the growth plate to correct angular deformities in growing children. This report describes the technique and the results achieved in 35 operated lower extremity segments, 14 involving the femur and 21 involving the tibia. The best results were achieved in posttraumatic deformities when the bone bridge occupied less than 20%-30% of the epiphyseal plate. The procedure is best performed toward the end of growth, or earlier if a progressive deformity exceeds 15 degrees - 20 degrees

    Epiphyseal distraction. Chondrodiatasis.

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    Chondrodiatasis is a limb-lengthening technique involving slow, controlled, symmetric epiphyseal distraction. The clinical and histological differences between this technique and distraction epiphysiolysis are described. Results are given for the elongation of 170 bone segments in 75 children (41 with limb-length discrepancies and 34 with achondroplasia). All patients were operated upon while the growth plate was still open with maximum bone maturation corresponding to Risser 2
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