Used for segmental bone loss after tumor resection or non-oncologic massive defects (failed revision arthroplasty, periprosthetic fractures). Common sites: distal femur replacement (DFR), proximal tibia, proximal femur replacement (PFR), proximal humerus. Advantages: immediate stability, early mobilization; modular designs allow intra-op flexibility. Complications: infection, aseptic loosening, soft tissue failure (extensor mechanism in proximal tibia), mechanical breakage. Long-term survivorship influenced by adjuvant therapy, soft tissue coverage, and patient activity.
Used for segmental bone loss after tumor resection or non-oncologic massive defects (failed revision arthroplasty, periprosthetic fractures). Common sites: distal femur replacement (DFR), proximal tibia, proximal femur replacement (PFR), proximal humerus. Advantages: immediate stability, early mobilization; modular designs allow intra-op flexibility. Complications: infection, aseptic loosening, soft tissue failure (extensor mechanism in proximal tibia), mechanical breakage. Long-term survivorship influenced by adjuvant therapy, soft tissue coverage, and patient activity.
What is the most common indication for the use of mega-prostheses in orthopaedic surgery?
Which complication is most commonly associated with mega-prostheses?
What is a key advantage of using modular designs in mega-prostheses?
Which of the following is NOT a common site for mega-prosthesis implantation?
Which feature of modern mega-prostheses helps reduce aseptic loosening rates?
In the context of mega-prosthesis, what does the Mirels scoring system evaluate?
What is a potential complication specifically associated with proximal tibia mega-prosthesis?
Which of the following factors is NOT typically considered when assessing long-term survivorship of mega-prostheses?
What is the purpose of using silver-coated mega-prostheses?
Which of the following conditions is a non-oncological indication for mega-prosthesis usage?
