Fig. 9A–B.

(A) A radiograph taken at 4 weeks after surgery shows the joint-preserving distal femur prosthesis in Patient 7. (B) A CT scan of both knees taken 2 years after surgery shows continuous growth of the small remaining distal femur epiphysis. The growth of the proximal tibia epiphysis is also preserved, which would have been affected in a conventional standard arthroplasty after distal femoral tumor resection.