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IntroductionTwo treatment procedures can be implemented when dealing with leg length discrepancies associated with Proximal Femoral Focal Deficiency (PFFD). The knee can be fused along with a Van Nes rotationplasty (VNR) or Syme's amputation (SA). Advocates of the VNR claim that it provides a more efficient gait, while advocates of the SA claim that it provides a limb that is easier to fit with...