Modification of the Van Nes rotationplasty: report of a case.

Rotationplasty is a reconstructive option that provides a highly functional limb after tumor resection about the knee in the skeletally immature patient. However, in the very young child with large intramedullary extension of the tumor, leg length may not be possible to maintain. Described is a modification of the Van Nes rotationplasty that preserves the proximal tibial physis, allowing maximization of future growth.