Limb Salvage Techniques for Musculoskeletal Tumors

Limb salvage surgery for musculoskeletal tumours has largely supplanted amputation, combining oncological control with functional preservation. Techniques encompass segmental bone resection followed by reconstruction using endoprosthetic implants, biological grafts or allografts with adjuvant fixation. Endoprosthetic reconstructions feature modular or custom megaprostheses tailored to defect size, aiming to restore skeletal continuity and permit early weight bearing. Innovations in porous coatings, modularity and patient-specific designs have improved implant fixation by promoting osseointegration and reducing aseptic loosening. Biological reconstructions employ autografts or devitalised allografts often augmented with internal fixation to encourage host bone remodelling. For skeletally immature patients, expandable endoprostheses or distraction osteogenesis address limb length discrepancy. Preservation of soft tissues, use of rotating hinge joints and advanced fixation stems further enhance stability. Ongoing challenges include periprosthetic infection, mechanical failure and long-term implant survival, driving research on antimicrobial surfaces, biomechanical optimisation and precision engineering.

Research from Nature Portfolio

Recent studies have demonstrated a staged prosthetic lengthening approach for correction of osteosarcoma-associated leg discrepancy in mature patients. By initially using an external fixator and temporary cement spacer to achieve the desired length, followed by sequential replacement with a static endoprosthesis, this strategy has achieved accurate limb equalisation, high functional scores and low complication rates in short-term follow-up cohorts.

Limb Salvage Techniques for Musculoskeletal Tumors publication trend

The graph below shows the total number of articles in limb salvage techniques for musculoskeletal tumors across all publications each year (not limited to Nature Index journals).

Technical terms

Endoprosthesis: An internal prosthetic reconstruction device used to replace resected bone segments following tumour excision.

Osseointegration: The direct structural and functional connection between living bone and the surface of a load-bearing implant.

External fixator: A stabilising frame applied outside the limb, connected to bone via pins, employed for gradual lengthening or alignment correction.

Megaprosthesis: A large modular endoprosthetic system designed to reconstruct extensive skeletal defects after tumour resection.

Leg length discrepancy (LLD): A condition in which the lengths of the lower limbs differ, often addressed by surgical lengthening or adjustable prosthetic components.

References

1. An innovative staged prosthetic lengthening reconstruction strategy for osteosarcoma-related leg discrepancy. Scientific Reports (2024).
2. Early radiological outcomes of a fully porous bridging collar in lower-limb endoprosthetic reconstructions: a case-matched retrospective series to assess osseointegration. Arthroplasty (2024).
3. The primary stability of ultrashort residual proximal femur fixed with triangular fixation stem prosthesis: a comparative biomechanical study based on sawbones models. Frontiers in Bioengineering and Biotechnology (2024).
4. Comparison of Prophylactic Intravenous Antibiotic Regimens After Endoprosthetic Reconstruction for Lower Extremity Bone Tumors. JAMA Oncology (2022).