Objective:

To study the prognosis of limb salvage surgery with close peri-neurovascular margins (defined as <2.4 mm) in high-grade osteosarcoma.

Approach:

Key Findings:

• Close peri-neurovascular margin was associated with higher local recurrence rates.
• Greater tumor size was a risk factor for metastasis and overall survival.
• Decision tree model indicated significant interaction between peri-neurovascular margin and tumor size affecting local recurrence-free survival.

Interpretation:

The prognostic effect of close surgical margins in high-grade osteosarcoma varies with tumor size. Smaller tumors may tolerate closer margins better than larger tumors, which have poorer outcomes.

Limitations:

• Retrospective nature of the study may introduce bias.
• Limited sample size may affect the generalizability of findings.
• Potential confounding factors may influence the results.

Conclusion:

Close surgical margins in limb salvage surgery for small osteosarcomas pose a risk for local recurrence and survival, while larger tumors have a poor prognosis regardless of margin status, highlighting the need for careful surgical planning.

Attribution Notice

This content is an AI-generated, fully rewritten summary based on a published scholarly article. It does not reproduce the original text and is not a substitute for the original publication. Readers are encouraged to consult the source for full context, data, and methodology.