Analysis of the Chest Wall Reconstruction Methods after Malignant Tumor Resection

Sternal Resections: An Attempt to Find the Ideal Reconstruction Method

Background and Objectives: Sternal resections, although rare, pose significant challenges for the reconstruction of large anterior chest wall defects. Both stability and soft tissue reconstruction are essential for preventing respiratory complications and ensure structural stability. Despite the variety of techniques proposed, no consensus exists on an optimal method. Herein, we present our institutional experience using the novel "spider-web" technique combined with an anterolateral thigh (ALT) free flap for chest wall and soft tissue reconstruction following extensive sternectomies. Materials and Methods: Between January 2023 and November 2024, five female patients underwent partial or total sternectomy for oncologic indications. Chest wall stability was restored using the "spider-web" technique-based on non-resorbable polyester threads arranged in a geometric web pattern reinforced with polypropylene mesh-followed by soft tissue reconstruction using a free ALT myocutaneous flap. Data on demographics, surgical details, postoperative outcomes, and complications were prospectively analyzed. Results: Resections included two partial and three total sternectomies. The mean operative time was 385 min (range: 330-435 min). All patients were extubated postoperatively without the need for respiratory support. The "spider-web" construct provided adequate chest wall stability with no cases of paradoxical movement or chronic pain. No flap loss occurred; one case required revision for venous thrombosis, and one hematoma at the donor site was evacuated. No infections or wound dehiscence were observed. The median hospital stay was 11 days (SD ± 1.67 days), and 30-day mortality was 0%. Median follow-up was 10 months (SD ± 6.55 months), without long-term complications. Conclusions: The "spider-web" technique, combined with ALT myocutaneous free flap, is a simple, reliable, and cost-effective method for the reconstructing extensive chest wall defects following sternectomy. Its technical versatility and favorable outcomes suggest it as a valuable option, offering both structural stability and soft tissue coverage with minimal morbidity.

Anterolateral Thigh Chimeric Flap: An Alternative Reconstructive Option to Free Flaps for Large Soft Tissue Defects

The anterolateral thigh (ALT) skin flap provides abundant, thin, pliable skin coverage with adequate pedicle length and calibre, and tolerable donor site morbidity. However, coverage of relatively large defects using the ALT flap alone is limited. We present our experience of using the ALT flap coupled with the vastus lateralis (VL) flap supplied by the same pedicle for large defect reconstruction. Between 2016 and 2020, ten patients with extensive lower-extremity or trunk defects were treated using the ALT/VL chimeric flap. The ALT portion was used to cover the cutaneous and joint defect while the VL part was used to resurface remnant defects, and a skin graft was performed. All flaps were based on the common descending pedicle, and branches to separate the components were individually dissected. All defects were successfully reconstructed using the ALT/VL chimeric flap. No surgery-related acute complications were observed, and the patients had no clinical issues with ambulation or running activities during the long-term follow-up period. With the separate components supplied by a common vascular pedicle, the ALT/VL chimeric flap allows us to reconstruct extensive defects with joint involvement or posterior trunk lesions. Thus, the ALT/VL chimeric flap may be a suitable alternative for extensive tissue defect reconstruction.