Introduction: Complex traumatic injuries of the lower limb are increasingly being salvaged. The common long-term morbidity includes secondary lymphedema. The role of microvascular flaps is often discussed for lymph flow restoration. However, the differential effect of using muscle flap versus fasciocutaneous flap in the lower-limb trauma to avoid secondary lymphedema is not studied.
Methods: Forty patients who underwent microvascular flap reconstruction were reviewed retrospectively to obtain data regarding clinical demographics and surgical procedure. Assessment for presence of clinical lymphedema was done. The lymphatic drainage in all these patients was assessed by 99mTc lymphoscintigraphy.
Results: Of the 40 patients included in the study, group A (n = 23) underwent muscle-based free flap reconstruction, and group B (n = 17) had fasciocutaneous flaps. Clinical lymphedema was present in 21 patients, of which 18 were of group A and 3 of group B. On lymphoscintigraphy, 14 patients had either partial or complete obstruction in the reconstructed lower limb, 11 in group A and 3 in group B. All of them (n = 14) were found to have associated clinical lymphedema. The association of clinical lymphedema (P < 0.001) and obstructive pattern on lymphoscintigraphy (P < 0.05) with muscle flaps was found to be statistically significant.
Conclusions: With the advancement in surgery and techniques, not only salvageability but also stable and morbidity free outcomes are the goals. Fasciocutaneous flaps may have better lymphatic outcomes than the muscle-based flaps, and the criteria for lower-limb reconstruction can be reformed to include simultaneous soft tissue and lymphatic reconstruction.
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