Fournier's Gangrene reconstruction in black patients using SCIP flap and split thickness skin graft: 2 case reports and a literature review.

Fournier's gangrene is a potentially life-threatening infectious disease involving the perineum and genitals. Aggressive surgical and medical management is often required, leaving the patient with large integumentary defects. The multiplicity of reconstructive options reported highlights the lack of consensus on the best covering option. Functional and aesthetic considerations are in play, and the literature is scarce on male black patients. We report here two cases of dark-skinned patients presenting with scrotal and penile integumentary defects that were respectively reconstructed with a superficial circumflex iliac artery propeller perforator flap and a split-thickness meshed skin graft and discuss the available literature on the topic.

From Angiosomal to Bi-Angiosomal and Extra-Angiosomal Pedicled Perforator Flaps: Optimizing the Use of Local Tissues in Abdominal Wall Reconstruction.

INTRODUCTION: The use of free-style and propeller perforator-based flaps has been popularized for the reconstruction of moderate size defects in the trunk and extremities, while their application in the field of abdominal reconstruction is seldom reported. The purpose of this report is to describe the authors experience with the use of pedicled perforator-based flaps in abdominal wall reconstruction, presenting the innovative concept of transition from angiosomal to bi-angiosomal and extra-angiosomal perforator flaps and showing applications of the different flap designs according to the multiple clinical scenarios. PATIENTS AND METHODS: A total of 15 patients underwent abdominal wall reconstruction with angiosomal, bi-angiosomal, and extra-angiosomal pedicled perforator-based flaps harvested from the surrounding abdominal subunits for superficial or full thickness defects of the abdominal wall of moderate and large dimensions. The defects were consequent to soft-tissue sarcomas (STS) and non-melanoma skin cancer (NMSC) resection in 11 and 4 cases, respectively. Operative data, post-operative course, and complications were recorded. Moreover, at 12 months follow-up, patients were asked to rate the esthetic and functional outcomes of the reconstructive procedure on a 5-point Likert scale. RESULTS: Ten angiosomal perforator flaps (4 DIEP, 4 SCIP, 1 SEAP, and 1 LICAP flaps) and 5 bi-angiosomal and extra-angiosomal conjoined perforator flaps including different vascular territories (3 bilateral DIEP, 1 bilateral SEAP, and 1 ipsilateral DIEP-SEAP flap) were successfully transferred in 15 patients. In two patients, microsurgical anastomoses were performed to guarantee proper vascularization of the additional cutaneous territory. Mean age was 59.3 years. Defect sizes ranged from 98 to 408 cm2 (mean size was 194.7 cm2). Mean operative time was 280 min. Flap surface ranged from 108 to 336 cm2 (mean surface was 209.3 cm2). No major complications were registered. One bi-angiosomal bilateral DIEP flap suffered from partial necrosis and required an additional flap reconstruction. All patients underwent a 12-month follow-up except one, who did not show for clinical follow-up but responded at the Likert scale at clinical follow-up at 9 months. Overall patients' satisfaction was high, with mean esthetic and functional ratings of 4.27 and 3.87. CONCLUSION: The use of local tissues is an under-utilized solution in the field of abdominal wall reconstruction. Angiosomal, bi-angiosomal, and extra-angiosomal perforator flaps proved to be a reliable option to provide the transfer of a significant amount of tissue and offer like with like reconstruction while maximizing flap survival.

The Superficial Circumflex Iliac Artery Perforator Flap for Head and Neck Reconstruction.

Head and neck defects present a unique challenge in reconstructive surgery due to the complex anatomy of this area. Different defects often require a variety of reconstructive techniques. The superficial circumflex iliac artery perforator (SCIP) flap is particularly notable for its versatility in this context. It provides a thin, pliable skin island that can be integrated with bone, muscle, fascia, and other structures. Additionally, the morbidity associated with the donor site of the SCIP flap is generally low and well tolerated. This article offers a comprehensive overview of the evolution of this technique.

Superficial circumflex iliac artery perforator propeller flap for penoscrotal extramammary Paget's disease.

BACKGROUND: Extramammary Paget's disease (EMPD) is a rare intra-epidermal adenocarcinoma, and reconstruction of the penoscrotal region remains a clinical challenge. The superficial circumflex iliac artery perforator (SCIP) flap has been successfully used as a free flap, while its application as a propeller flap in the reconstruction of penoscrotal EMPD defect is rarely reported. The objective was to evaluate the safety and efficacy of the SCIP propeller flap in the reconstruction of penoscrotal defects in EMPD. METHODS: Between September 2010 and August 2022, consecutive patients diagnosed with penoscrotal EMPD were enrolled. All patients underwent penoscrotal EMPD excision and reconstruction with SCIP propeller flap combined with other flaps or skin grafts on individual defects. Demographic information, surgical parameters, postoperative complications, patient satisfaction, and recurrence rates were analyzed. RESULTS: Twenty-four patients (mean age, 73 ± 8.8 years; mean BMI, 23.98 ± 3.62 kg/m2) with 33 SCIP propeller flaps (mean size 120.1 cm2; range, 24-208 cm2) were included, and the mean defect size was 67.4 cm2 (range, 12-255 cm2). The mean operative duration was 385.4 ± 146.8 min. Fifteen patients received autologous full-thickness skin grafts, and four received other flaps simultaneously. All flaps survived without total or partial loss, and all donor sites achieved primary closure, though local hematoma (one case) and limited skin graft necrosis (two cases) were observed. All patients experienced complete wound healing and maintained penoscrotal morphology and function without recurrent lesions over a mean follow-up of 59 months. CONCLUSIONS: The SCIP propeller flap seems a safe and effective reconstructive method for penoscrotal EMPD. LEVEL OF EVIDENCE: IV.

Lower Abdominal vs. Lateral Thigh Perforator Flaps in Microsurgical Sarcoma Reconstruction: The Aesthetics of Donor Site Matters.

Introduction: Sarcoma resection often leaves patients with big defects only amenable through microsurgical reconstruction. In such cases, it is hard for the surgeon to uphold low donor-site morbidity with an aesthetic result. The purpose of this study was to investigate the clinical outcome and the patient's perception regarding the donor site in a cohort of patients undergoing microsurgical reconstruction with lateral thigh and lower abdominal perforator flaps. Methods: A retrospective evaluation of all patients who underwent sarcoma reconstruction with flaps harvested from the lower abdominal region (deep inferior epigastric artery perforator flap, superficial circumflex iliac artery perforator flap) or lateral thigh region (anterolateral thigh perforator flap and its variations) was performed. Only patients with defects greater than 100 cm2 were included. Patient demographics and operative variables were recorded, together with complications. Patient satisfaction and quality of life with the donor site were registered using the SCAR-Q questionnaire, which was administered at least six months post-operatively. Results: Eighteen anterolateral thigh (ALT) perforator flaps and twenty-two deep inferior epigastric artery perforator (DIEP) and superficial circumflex iliac artery perforator (SCIP) flap procedures were performed. The two groups were homogeneous for major post-operative complications (p > 0.999). Patient satisfaction with the donor site measured using the SCAR-Q questionnaire showed significantly higher scores in the DIEP/SCIP group when compared with the thigh group (p < 0.001), indicating a superiority of the lower abdominal area as an aesthetic donor site. Conclusions: The DIEP and SCIP flaps are a versatile option for reconstructing large soft-tissue defects following sarcoma resection. Therefore, flaps harvested from the lower abdomen yield a higher patient satisfaction with the donor site, which is a feature worth considering when planning a reconstructive procedure.

Scrotal reconstruction after Fournier's Gangrene using the superficial circumflex iliac artery perforator (SCIP) propeller flap: A case report.

INTRODUCTION: Fournier's gangrene, a rare infectious condition affecting the external genitalia, often requires aggressive medical-surgical interventions, resulting in variable scrotal tissue loss. Despite numerous proposed reconstruction techniques, achieving a consensus on the most effective approach that balances aesthetics and function remains elusive. This case report presents a one-year follow-up on scrotal reconstruction using a pedicled Superficial Circumflex Iliac Artery Perforator (SCIP) propeller flap. CASE REPORT: A 56-year-old patient with significant scrotal tissue loss due to Fournier's gangrene underwent scrotal reconstruction using a pedicled SCIP propeller flap. Optimal placement was ensured through a subcutaneous tunnel, with a thin thigh skin graft applied to cover the penile skin defect. DISCUSSION: The SCIP flap is distinguished by its thin and pliable characteristics, rapid harvesting and featuring a discreet donor site. It stands as a compelling alternative to skin grafts, providing advantages in sensory restoration, color congruence, and resilience against tension. Considering the thickness of the reconstruction helps both in recovering testicular function and improving the appearance by restoring the natural contour. CONCLUSION: The utilization of the pedicled SCIP propeller flap for scrotal tissue loss resulting from Fournier's gangrene has demonstrated both aesthetic and functional success, underscoring its potential as an effective reconstructive option.

Posttraumatic Scrotal Reconstruction with a Pedicled "Extended" Superficial Circumflex Iliac Artery Perforator Flap: A Case Report.

The superficial circumflex iliac artery (SCIA) perforator (SCIP) flap has been used for scrotal reconstruction after Fournier's gangrene, skin cancer, or infections. However, there are few publications with regard to penoscrotal reconstruction after a traumatic injury with this flap. In this article, we propose a new SCIP flap variation, the "extended" or "direct" SCIP flap, to effectively reconstruct a wide scrotal defect after a traumatic injury. The "extended" SCIP flap is designed medial and cranial to the anterosuperior iliac spine (ASIS) using the superficial branch of the SCIA as the main pedicle.

Immediate Partial Breast and Nipple-Areola Complex Reconstruction Using a Superficial Circumflex Iliac Artery Perforator Flap.

The superficial circumflex iliac artery perforator (SCIP) flap is a versatile flap that has been described for various applications, mostly for lower extremity coverage and head and neck reconstructions. However, there are few publications reporting its use for breast reconstruction, mainly because of its low volume availability. In this article, we present the case of a patient who successfully underwent a partial breast and immediate nipple-areola complex (NAC) reconstruction with an SCIP flap. She had been previously reconstructed with an implant after a nipple-sparing mastectomy, but the NAC turned out to be involved with cancer needing further resection. Our goal with this article, is to introduce a novel concept for addressing partial breast and NAC reconstruction and mostly, to illustrate the importance of an adaptable surgical plan based on every individual case emphasizing the versality of microsurgery for breast cancer reconstruction.

Superficial Circumflex Iliac Artery Perforator Flap Reconstruction of the Upper Extremity.

The superficial circumflex iliac artery perforator (SCIP) flap is thin, pliable tissue well suited for reconstruction of injuries of the hand and upper extremity. Based upon perforators from the superficial circumflex iliac artery, the SCIP flap has advantages over the traditional groin flap due to reduced need for secondary procedures and improved donor site morbidity This article offers a detailed exploration of the SCIP flap design and technique, its advantages over traditional methods, and its potential applications in reconstructive surgery. Post-operative care and critical points are also discussed, and case examples are provided to guide readers through the intricacies of the technique, emphasizing the surgical skill and precision required for successful implementation.

Alternative Flap Options for Upper Extremity Reconstruction.

For major upper limb defects, a wide range of established pedicled and free flap options can be used. These include the latissimus dorsi/thoracodorsal artery perforator, lateral arm, posterior interosseous artery, rectus abdominis, gracilis, and anterolateral thigh flaps. Technical proficiency is essential, and favorable success rates in terms of functional and esthetic outcomes can be achieved. Herein, alternative flap options (both pedicled and free) are introduced and discussed through a few illustrative case examples.

Head and neck reconstruction with the superficial circumflex iliac artery perforator (SCIP) free flap: Lessons learned after 73 cases.

BACKGROUND: Head and neck tissue defects after ablative surgery often require complex and composite reconstructions. The superficial circumflex iliac artery perforator (SCIP) flap is an extremely versatile perforator-based flap with minimal donor site morbidity, which may represent the optimal procedure in this setting. Over the last 5 years, we collected a large base of experience, including both simple and chimeric SCIP-based reconstruction, making this flap our first choice for head and neck reconstructions. PATIENTS AND METHODS: Seventy-three patients undergoing ablative head and neck surgery for oncologic pathologies were treated by means of a SCIP flap reconstruction. Patients' mean age was 67 years old (range 37-89), 51 were males and 22 were females. Fifty-eight flaps were simple and 15 were chimeric reconstruction patterns. Indocyanine green perfusion imaging was performed in all cases. RESULTS: All the patients were successfully treated with no flap losses were encountered. Twelve patients encountered postoperative complications: in four cases revision surgery was required for venous congestion, while the remaining cases were managed conservatively (four wound dehiscence and three infections). No patients showed donor site complications. The mean follow-up period was 11 months (range 3-24). CONCLUSIONS: Our case series demonstrates the reliability and versatility of the SCIP flap for different kinds of head and neck reconstructions. The chimeric options combined with bone, double skin paddle, and muscle offer a broad variety of functional reconstructive solutions for complex head and neck surgeries. Intraoperative indocyanine green perfusion examination provides a valuable tool to assess and ascertain proper vascularization and post-anastomosis vessel patency in complex microvascular flap-based reconstructions.

Venous anatomy of the superficial circumflex iliac artery perforator flap: A cadaveric and clinical study.

BACKGROUND: Reconstructive surgeons frequently face challenges with free tissue transfer when transplanted flaps are thicker than intended. This is especially pronounced in lower limb cases, where the soft tissue below the knee is thin. The supra-fascial superficial circumflex iliac perforator (SCIP) flap overcomes this problem, but venous congestion remains a concern. We aim to examine the venous anatomy of the SCIP flap through cadaveric dissections and clinical data analyses to enhance the understanding of the venous anatomy and reduce venous congestion in future procedures. METHODS: Eight cadaveric groins underwent venous dye injection and dissection to identify the superficial circumflex iliac vein (SCIV) and venae comitantes (VC) vascular networks. The venous anatomy was studied for dominant drainage. From April 2015 to December 2019, we conducted 102 SCIP flap reconstructions, mainly using the superficial circumflex iliac artery's superficial branch. Clinical data were analyzed and correlated with cadaveric dissections. SCIP flaps were categorized into three groups: dual drainage (VC and SCIV) in group I, SCIV-only in group II, and VC-only in group III. RESULTS: Correlations between clinical cases and cadaveric dissections revealed the SCIV as an independent drainage system with oscillating links to the VC. The SCIV is approximately twice the diameter of the VC, and the area of each vascular network suggests codominance. No significant difference in flap loss or venous congestion rates was noted when SCIV was the sole drainage, compared with VC or dual drainage. CONCLUSION: The SCIP flap with one artery and SCIV anastomosis, exhibits low venous congestion rates. Surgeons should consider SCIV for safe SCIP flap reconstruction.

[Comparative analysis of the groin and SCIP flap in reconstructive microsurgery of soft tissues of the maxillofacial area and oral cavity]. / Sravnitel'nyi analiz pakhovogo i SCIP-loskuta v rekonstruktivnoi mikrokhirurgii myagkikh tkanei chelyustno-litsevoi oblasti i polosti rta.

Most of the articles on the groin flap were published in the period from 1975 to 2010, from 2015 to 2022, the SCIP flap surpassed the groin flap in the number of publications. According to the results of a literature search in PubMed and RINC, 30 articles were found and selected, including 288 flaps from the iliac region. The length of the vascular pedicle, the diameter of the vessels, the complications, the prevalence of the flap in the reconstruction of the head and neck, the thickness and the size of the flap were evaluated. Both of these flaps have the same nutrition, but different levels of dissection. In comparison with the groin flap, the SCIP flap has a longer vascular pedicle, which can be enlarged due to new techniques, which also allows it to be used as an ultra-thin flap, and it reduces the need for secondary procedures for defatting and reduces the risks of the complications in the donor area. The thickness of the SCIP flap is less than the groin one, which, according to the author, increases the aesthetic level of operations in the facial area in the case of the texture and color of the flap. Vascular anatomy of the SCIP flap is variable, therefore, the use of preoperative planning is necessary. Despite this, complications in the donor or recipient area during reconstruction with a SCIP flap are minimal. It has been proved that the SCIP flap is versatile and safe in all aspects of reconstruction. It can be concluded that the SCIP flap should be considered as a «workhorse¼ in reconstructive microsurgery of soft tissues of the throat and oral cavity.

A Comprehensive Approach to Posttraumatic Lymphedema Surgical Treatment.

Background Posttraumatic lymphedema (PTL) is sparsely described in the literature. The aim of this study is to propose a comprehensive approach for prevention and treatment of PTL using lymphovenous anastomosis (LVA) and lymphatic vessels free flap, reporting our experience in the management of early-stage lymphedema. Methods A retrospective observational study was performed between October 2017 and July 2022. Functional assessment with magnetic resonance lymphangiography and indocyanine green lymphography was performed. Patients with lymphedema and functional lymphatic channels were included. Cases with limited soft tissue damage were proposed for LVA, and those with acute or prior soft tissue damage needing skin reconstruction were proposed for superficial circumflex iliac artery perforator lymphatic vessels free flap (SCIP-LV) to treat or prevent lymphedema. Primary and secondary outcomes were limb volume reduction and quality of life (QoL) improvement, respectively. Follow-up was at least 1 year. Results Twenty-eight patients were operated using this approach during the study period. LVA were performed in 12 patients; mean reduction of excess volume (REV) was 58.82% and the improvement in QoL was 49.25%. SCIP-LV was performed in seven patients with no flap failure; mean REV was 58.77% and the improvement QoL was 50.9%. Nine patients with acute injury in lymphatic critical areas were reconstructed with SCIP-LV as a preventive approach and no lymphedema was detected. Conclusion Our comprehensive approach provides an organized way to treat patients with PTL, or at risk of developing it, to have satisfactory results and improve their QoL.

Extremity reconstruction with superficial circumflex iliac artery perforator free flap: Refinements and innovations after 101 cases.

INTRODUCTION: The superficial circumflex iliac artery perforator flap is based on perforators originated on the superficial circumflex iliac artery. This flap is thin and pliable, of moderate size, and has a concealed donor site. The authors report their experience, innovations, and refinements in both planning and execution, and the outcomes obtained after 101 extremity reconstruction consecutive cases. PATIENTS AND METHODS: A total of 101 superficial circumflex iliac artery perforator flaps were prospectively reviewed and followed up for at least one year at Hospital del Trabajador. The flaps were used for both upper (n = 21) and lower limbs (n = 80), planned with computed tomography angiography/augmented reality, and raised above the superficial fascia using a standardized approach. Demographic data, anatomy of the flap, surgical technique, and the results were assessed. RESULTS: Average flap size was 90.5 cm2, ranging from 25 to 212 cm2. Total flap loss occurred in 6 flaps (5.9%). Four patients developed complications at the donor site. Debulking surgery was performed in 7 patients (6.9%). The average follow-up period was 850 days (range, 370-1405 days). CONCLUSIONS: The superficial circumflex iliac artery perforator flap is versatile, thin, and pliable, suitable for covering even large defects in either the upper or lower extremities, obtaining a shallow contour and optimal esthetics results. The elevation can be standardized, but requires training and proper planning. This is the largest series in a Western country reporting the experience, refinements, and innovation that allows for better results in limb reconstruction.

Comparison of outcomes following pedicled and free flap transfers for the defect after shoulder sarcoma resection.

BACKGROUND: Reconstruction after wide resection of a sarcoma arising in the shoulder girdle is challenging, and little evidence is available to compare short-term outcomes between pedicled-flap and free-flap reconstruction. PATIENTS AND METHODS: Thirty-eight patients undergoing immediate reconstruction surgery with only a pedicled-flap (n = 18) and with a free-flap (n = 20) after sarcoma resection on the shoulder girdle between July 2005 and March 2022 were identified. One-to-one propensity score matching was performed to compare the postoperative complications. RESULTS: Transferred flaps survived completely in 20 cases in the free-flap group. In the all-patient analysis of binary outcomes, the occurrences of total complications, takebacks, total flap complications, and flap dehiscence were higher in the pedicled-flap group than in the free-flap group. The propensity score-matched analysis showed the occurrence of total complications was significantly higher in the pedicled-flap group than the free-flap group (53.8% vs. 7.7%, p = 0.03). In the propensity score-matched analysis of continuous outcomes, the pedicled-flap group demonstrated a shorter operation time than the free-flap group (279 vs. 381 min, p = 0.05). CONCLUSIONS: This clinical study demonstrated the feasibility and reliability of a free-flap transfer for the defect after wide resection of a sarcoma arising in the shoulder girdle.

Multifarious uses of the pedicled SCIP flap - a case series.

BACKGROUND: Groin flaps have been used as pedicled and free flaps by plastic surgeons for time immemorial. The superficial circumflex iliac artery perforator (SCIP) flap has evolved from the groin flap in which the entire skin territory of the groin flap can be harvested based on the perforators of the superficial circumflex iliac artery (SCIA) and only a part of the SCIA can be taken along with. The pedicled SCIP flap can also be utilized in a large number of cases which is described in our article. PATIENTS AND METHODS: Between January 2022 to July 2022, 15 patients were operated on using the pedicled SCIP flap. Twelve patients were males and 3 patients were females. Nine patients presented with a defect in the hand/forearm, 2 patients had a defect in the scrotum, 2 patients had a defect in the penis, 1 patient had a defect in the inguinal region overlying the femoral vessels and 1 patient had a defect in the lower abdomen. RESULTS: There was a partial loss of one flap and a complete loss of one flap from pedicle compression. The donor site healed well in all cases with no evidence of wound disruption or seroma or hematoma formation. As all the flaps were quite thin, no debulking was needed as an additional procedure. CONCLUSION: The dependability of the pedicled SCIP flap implies that this flap should be used more often in reconstructions in and around the genital area and also in cases of upper limb coverage instead of the classical groin flap.

Superficial Circumflex Iliac Artery Perforator Flap with Bilobed Design for the Donor Defect after Wrap-Around Flap Transfer Reconstruction.

OBJECTIVE: The repair of great toe donor site defect after wrap-around flap transfer is still controversial. The bilobed superficial circumflex iliac artery perforator (SCIP) flap can improve the aesthetics of the great toe while maintaining its function. Thus, this study aimed to report our experience in the reconstruction of big toe donor site defects with the bilobed SCIP flap and describe the clinical outcomes. METHODS: This study was a retrospective trial. From May 2017 to May 2020, 13 patients with the great toe donor site defect after wrap-around flap transfer were included in this study. The average age of the patients was 44 years (range, 23-60 years). All patients received free bilobed SCIP flaps to reconstruct the donor site defect of the great toe. Relevant clinical features were recorded preoperatively. The thickness and design of the SCIP flap and the harvesting layer of the flap were measured during the operation. The survival rate of flaps and skin grafts and the incidence of infection were recorded after operation. At follow-up, donor site complications and postoperative outcomes were evaluated. RESULTS: In all cases, the SCIP flap covering the donor site of the great toe survived. All patients were followed up for 24-40 months (mean, 30.5 months). The average thickness of the SCIP flap was 0.38cm. All SCIP flaps were harvested from the superficial fascial layer except for three obese patients. The thin SCIP flap had a bilobed design with no further defatting procedures. Postoperatively, the great toe-nail flap donor site regained its original appearance without bloating or flap necrosis. There was a hidden linear scar in the groin donor site, which did not affect hip joint movement. All patients were satisfied with the aesthetics of the surgical site. CONCLUSION: The SCIP flap with bilobed design for repairing the donor defect of the great toe after wrap-around flap transfer is a kind of surgical method with excellent contour, meeting the requirements of function and aesthetics.

Immediate tendon transfer for functional reconstruction of a dorsal forearm defect after sarcoma resection.

In the treatment of sarcoma, the reconstructive surgeon must consider not only limb salvage but also functional reconstruction. The aim of this study was to evaluate a functional reconstruction of a dorsal forearm defect after sarcoma resection using immediate tendon transfer. Patients who underwent reconstruction of a dorsal forearm defect after sarcoma resection with an immediate tendon transfer between 1997 and 2019 at our hospital were included in this retrospective study. Patient demographics, tumor characteristics, surgical characteristics and functional outcomes were examined. Nine patients were included in this study. Tendon transfer of the flexor carpi radialis (FCR) or the flexor carpi ulnaris (FCU) to the extensor digitorum communis (EDC), the brachioradialis (BR) to the EDC, and the palmaris longus (PL) tendon to the extensor pollicis longus (EPL) was performed in seven, two and five patients, respectively. Seven patients underwent reconstruction using a free flap. Neither anastomosis complications nor infections were encountered. Partial flap necrosis and donor site dehiscence were seen in one case each. The mean distal interphalangeal (DIP), proximal interphalangeal (PIP) and metacarpophalangeal (MP) joint active extension were 4.4°, 6.1° and 11.1° postoperatively. The mean Musculoskeletal Tumor Society (MSTS) score was 26. Immediate tendon transfers of the FCR or the FCU to the EDC and the PL tendon to the EPL can be considered an optimal functional reconstruction of a dorsal forearm defect after sarcoma resection.