Original Research

Free Composite Serratus Anterior-Latissimus-Rib Flaps for Acute One-Stage Reconstruction of Gustilo IIIB Tibia Fractures

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TAKE-HOME POINTS

  • Gustilo IIIB injuries with segmental bone loss can be difficult to treat with conventional means.
  • Vascularized bone grafts are beneficial for reconstructing bone defects >5 cm.
  • The SALR composite flap consists of bone and muscle.
  • This flap can provide soft tissue coverage and vascularized bone in a single surgical procedure.
  • In this study, the use of the SALR composite flap was capable of healing large segmental bony defects at an average of 7 months.


 

References

ABSTRACT

Gustilo IIIB injuries of the tibia with segmental bone loss continue to be a difficult reconstructive problem. The serratus anterior-latissimus-rib (SALR) composite flap consists of bone and muscle; this flap can provide soft tissue coverage and vascularized bone in a single surgical procedure. The purpose of this study is to describe the use of the SALR flap for the treatment of a large open tibia fracture with segmental bone loss, with a specific focus on postoperative complications, limb salvage, and time to union.

We reviewed the medical records of patients undergoing an SALR flap (n = 5) for the treatment of Gustilo Type IIIB tibia fractures within 1 month of injury. We compared the mechanism of injury, injury severity score, time from injury to free tissue transfer, complications, and time to radiographic and clinical union.

All patients were male, with a mean age of 25 years. On average, patients underwent free tissue transfer within 1 week of injury. The average time to radiographic union was 7 months. Two patients underwent reoperation. There were no graft failures.

Free SALR flaps can be a useful option for the treatment of high-energy tibia fractures with extensive soft tissue and bone loss. These flaps provide immediate osseous and soft tissue reconstruction with an acceptable complication profile.

Reconstruction of the lower extremity following Gustilo’s grade IIIB injuries is difficult due to loss of both combined soft tissue and segmental bone loss. Since these injuries necessitate the need for soft tissue flap coverage along with vascularized bone grafting, free fibula flaps have classically been used for reconstruction.1-3 In the setting of bilateral lower extremity injury, the contralateral fibula is often not appropriate to harvest and transfer; therefore, other sources of vascularized bone grafts must be utilized including vascularized iliac crest and rib.1-5 The vascularized iliac crest graft is insufficient to provide the bony reconstruction of bone defects >6 cm to 7 cm and does not have a reliable skin paddle.4 In contrast, free composite serratus anterior-latissimus-rib (SALR) flaps can provide both long segments of vascularized bone and abundant soft tissue coverage for large segmental defects.1-5

Continue to: Free fibula grafts have been considered...

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