Limb-sparing surgery for soft-tissue sarcoma: when can the limb be preserved?
Limb preservation is more than avoiding amputation: the tumour must be removed with adequate oncological margins while aiming for a safe, useful limb.
Core principle: oncological resection remains the priority. Limb-sparing surgery is considered when adequate removal and a safe, functionally useful reconstruction are achievable.
How the decision is made
The team reviews MRI, biopsy findings, subtype, grade, previous treatment and the patient's overall condition. The operative plan includes both tumour removal and a realistic method of closing the defect and restoring support or movement.
Vessels and nerves
Contact or abutment of a tumour with a vessel or nerve does not mean invasion and is not an automatic indication for amputation. If a major vessel is involved, resection and vascular reconstruction may be possible in selected cases. Involvement of a major nerve is assessed separately: its resection may substantially affect limb function, and nerve reconstruction does not guarantee functional recovery. The decision depends on the anatomy, whether the required oncological extent of resection can be achieved, and the expected function of the limb.
A short planning fragment
Clinical material from the author's archive is published with confirmed consent. Images are de-identified and illustrate principles; they do not replace assessment of an individual case.
What reconstruction may involve
Soft tissue
Primary closure, local or free flaps, or skin grafting may be used according to the defect and the wider treatment plan.
Vessels, nerves or bone
Selected cases may require vascular grafting, fixation, bone grafting or an endoprosthesis. Nerve reconstruction may be considered in specific situations, but functional recovery is not guaranteed.
Treatment before surgery
Preoperative radiotherapy or systemic treatment may be relevant for selected subtypes and situations. The MDT makes this decision; these treatments do not make every tumour suitable for limb-sparing surgery.
When preservation may not be possible
Amputation may be discussed when adequate margins cannot be achieved safely, when reconstruction would not produce a safe or useful limb, in severe infection, or in selected recurrent situations. The aim is not preservation at any cost, but the best oncological and functional strategy.