Tsuboyama, Tadao, Reinhard Windhager, Wolfgang Dock, Thomas Bochdansky, Takao Yamamuro, and Rainer Kotz. 1993. “Knee Function After Operation for Malignancy of the Distal Femur: Quadriceps Muscle Mass and Knee Extension Strength in 21 Patients With Hinged Endoprostheses”. Acta Orthopaedica 64 (6):673-77. https://doi.org/10.3109/17453679308994596.