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Updated: May 2, 2026
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Vessel-sparing Excision and Primary Anastomosis
Published on: January 7, 2019
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Effects of Neoadjuvant Radiation and Recipient Vessel Characteristics on Microvascular Complication Rates in
Rebecca L Farmer1,2, Justin Easton1, Ruston Sanchez3
1Division of Plastic, Reconstructive and Hand Surgery, St. Vincent's Hospital, Melbourne VIC, Australia.
Journal of Reconstructive Microsurgery
|November 4, 2024
Summary
Free tissue transfer for lower extremity soft tissue sarcomas (STS) is safe, even with irradiated vessels or unnamed perforators. This study found no significant increase in microvascular complications, supporting its use in challenging reconstructions.
Area of Science:
- Orthopedic Surgery
- Surgical Oncology
- Plastic and Reconstructive Surgery
Background:
- Limb-sparing surgery (LSS) combined with neoadjuvant radiation is standard for lower extremity soft tissue sarcomas (STS).
- Free tissue transfer is often required for reconstruction after LSS, but irradiated recipient vessels may increase complication risks.
- Anatomically challenging lower extremity areas present difficulties due to reliance on unnamed perforator vessels.
Purpose of the Study:
- To evaluate the impact of recipient vessel characteristics on microvascular complications in free flap reconstructions for STS.
- To compare complication rates between irradiated and non-irradiated recipient vessels.
- To assess the safety of using unnamed perforating branches as recipient vessels.
Main Methods:
- Retrospective review of patients undergoing free tissue transfer for lower extremity STS defects (2009-2020).
- Comparison of microvascular complication rates based on recipient vessel type (axial vs. unnamed perforator) and radiation status.
- Analysis of intraoperative versus postoperative complication detection.
Main Results:
- A total of 204 free flaps were analyzed, with an overall microvascular complication rate of 13.7%.
- Most complications (82.1%) were detected postoperatively, primarily venous congestion/thrombosis (71.4%).
- Neither irradiated recipient vessels (OR=1.98, p=0.52) nor unnamed perforating branches (OR=0.87, p=0.75) showed a statistically significant increase in microvascular complications.
Conclusions:
- Free tissue transfer is a safe option for reconstructing irradiated lower extremity STS defects.
- Irradiated recipient vessels can be used without a significantly elevated risk of microvascular complications.
- Unnamed perforating branches are viable recipient vessels for complex lower extremity reconstructions.
