Acta Orthopaedica Scandinavica · 1996 · 10 citations · 6 references
MedicineOrthopaedic SurgeryOrthopedic SurgeryBone MetabolismDistraction OsteogenesisOrthopedicsBone FormationBone GrowthBone HistomorphometryBone MineralizationLimb LengtheningOsteogenesisBone Density EstimationBone Matrix Mineral ContentBone Mineral DensityDual-energy X-ray Absorptiometry AssessmentFemoral LengtheningMineral Content EstimationRadiographic Bone MeasurementTibial Lengthening
We examined the callus formation during leg lengthening in 7 achondroplastic patients who underwent 3 bilateral femoral and 4 bilateral tibial lengthenings. Bone mineral content and bone mineral density (BMD) in the lengthened callus space were evaluated every 1 or 2 weeks for 10 weeks after the start of distraction using dual energy X-ray absorptiometry. The mean rate of callus mineralization in femurs (0.64 g/wk) was higher than in tibias (0.22 g/wk). The mean BMD at 10 weeks after the start was 0.35 g/cm2 in the femur and 0.14 g/cm2 in the tibia. Different rates of callus formation in different kinds of long tubular bones have not been reported previously.
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