Application Of Anterolateral Thigh Flap Research Articles

A simplified classification and economical application of anterolateral thigh flap

Anterolateral thigh (ALT) flaps have several anatomical variations and clinical uses. Here, a simplified classification and economical application are introduced. A total of 168 ALT flap reconstructions performed between January 2013 and December 2016 were reviewed. Vascular anatomy of the flaps was classified into 5 types: type I (single perforator from the transverse branch), type II (single perforator from the descending branch), type III (multiple perforators from the transverse branch), type IV (multiple perforators from the descending branch), and type V (multiple perforators from both branches). Furthermore, flaps harvested via preservation of the proximal perforator were compared with those that were not. Vascular classification revealed that type IV (50.0%) and type V (32.1%) flaps were the most commonly used. Of these, 50.0% of type IV and 79.6% of type V were harvested as proximal-perforator-preserving distal ALT flaps. The proximal-perforator-preserving group had a smaller flap size (104.4±84.3cm2 versus 145.9±94.1cm2, p=0.003), shorter reconstruction time (266.3±76.1min versus 302.0±103.0min, p=0.013), and fewer donor-site complications (2.4% versus 13.3%, p=0.009) than the traditional group, whereas the flap success rate was comparable (96.5% versus 96.4%) between them. Five cases received a second ALT flap from the same donor site after 3 failures and 2 metachronous defects. Multiple perforators in ALT flaps allow the harvesting of 2 ALT flaps from the same donor-site metachronously. Our classification and applications can improve efficiency while reducing donor-site morbidity.

Application of anterolateral thigh flap preforming tongue in patients with total glossectomy

Objective: To investigate the efficacy of anterolateral thigh flap preforming tongue in patients with total glossectomy. Methods: A total of 27 patients with tongue cancer who underwent total glossectomy, neck lymph node dissection and anterolateral thigh flap transfer were collected from January 2019 to April 2021 in the Department of Oral and Maxillofacial Surgery at the Second Xiangya Hospital. All patients were males, the age ranged from 35-73 years. The patients were divided into experimental (14 cases) and control (13 cases) groups, based on whether the tongue was reconstructed. The clinical parameters of two groups were analyzed by independent sample t test or Fisher exact probability method. Results: The success rate of free flap was 100%, of the patients, 2 patients had cervical hematoma and 1 patient had wound infection postoperatively. There was no difference in speech (6.69±3.42 vs. 5.50±3.01, t=0.96, P=0.346) or swallowing (χ2=0.46, P=0.793) function between two groups at 1 month after surgery. However, the speech (24.94±7.43 vs. 18.44±6.30, t=2.48, P=0.020) and swallowing (χ2=6.97, P=0.008) functions in experimental group were significantly better than those in control group. No case was lost to follow-up. All patients were extubated after operation, with average time of 7.2 days in the experimental group and 7.7 days in the control group. The overall survival rate was 71.4% in the experimental group and 61.5% in the control group. Conclusion: The use of anterolateral thigh flap preforming tongue can improve the speech and swallowing functions in patients with total glossectomy and offer a novel method for tongue construction.

Microsurgical Anterolateral Thigh Flap for Reconstruction of Extremity Soft Tissue Defects in Pediatric Patients.

The anterolateral thigh flap is one of the most widely used flaps because it has the advantages of less damage to the donor site, no sacrifice of main blood vessels, and abundant soft tissue. However, the application of anterolateral thigh flap in children is relatively rare because of small blood vessels and rapid physiological changes. The aim of this study was to explore the effectiveness and characteristics of free anterolateral thigh flaps for the reconstruction of extremity soft tissue defects in pediatric patients. This study included 26 pediatric patients, with an average age of 6.7 years (range, 2-13 years). There were 5 cases of upper limb defects and 21 cases of lower limb defects, all of which were accompanied by exposed bones or tendons. The causes of defects included traffic injury in 9 cases, mechanical injury in 7 cases, collision injury in 4 cases, spoke injury in 3 cases, cicatricial contracture in 2 cases, and fibroma in 1 case. All defects were reconstructed with free anterolateral thigh flaps. Twenty-six anterolateral thigh flaps were harvested, including 15 fasciocutaneous flaps and 11 musculocutaneous flaps. The mean size of the flap was 73.4 cm 2 (range, 4 × 3 to 24 × 8 cm). The donor sites were sutured directly in 19 cases and underwent split-thickness skin grafting in 7 cases. There were 3 cases of vascular crisis, 3 cases of flap edge necrosis, 3 cases of infection, 1 case of pressure ulcer, and 1 case of dehiscence after surgery. Eleven patients had scar hyperplasia in the donor site. A total of 34 reoperations were performed, including 14 flap debulking, 7 debridement, 4 skin graft, 3 vascular crisis re-exploration, and 6 other procedures. Free anterolateral thigh flap was a safe and reliable option for reconstructing soft tissue defects of extremities in pediatric patients. Notably, the incidence of scar hyperplasia in the donor site and the possibility of reoperation in pediatric patients were higher than those in adult patients.

Clinical application of anterolateral thigh flap in wound around the knee with descending genicular artery as the recipient vessel

Objective To explore the clinical application of anterolateral thigh flap transplantation in repairing wound around the knee with descending genicular artery as the recipient vessel, when anterior or posterior tibial vessel could not be utilized. Methods From January, 2015 to May, 2017, free anterolateral thigh flaps obtained from anastomosis of descending genicular artery and great saphenous vein were transplanted to repair the skin soft tissue defect around the knee combined with tendon and bone exposure in 7 patients, after preoperative color Doppler sonography ultrasound (CDU) for precise positioning. There were 4 males and 3 females, with the flap area ranging from 18.0 cm×8.0 cm-38.0 cm×8.0 cm. All of the donor sites were sutured directly. Postoperative followed-up was done termly. Results All the patients were followed-up for 6 to 14 months, with an average of 8.9 months. Typically, 2 cases had large defect areas, with distal flap necrosis of 6.0 cm and 4.0 cm, respectively, which were resected and achieved secondary skin graft healing on the residual surface. Additionally, 4 cases had completely survived flaps and achieved secondary skin graft healing on the residual surface. The remaining 1 case had completely survived flap, but the distal flap near the anteromedial tibia developed bone exposure as a result of the complicated osteomyelitis. As a result, the patient received gastrocnemius myocutaneous flap to repair the wound. Conclusion Anterolateral thigh flap transplantation in repairing skin soft tissue defect wound around the knee, with descending genicular artery as the recipient vessel, can achieve satisfactory clinical efficacy, which can serve as one choice for flap repair in wound around the knee. Key words: Anterolateral thigh flap; Descending genicular artery; Knee joint; Transplantation

Application of Anterolateral Thigh Flap in Reconstructing Trochanteric Pressure Sore Defect

Application of Anterolateral Thigh Flap in Reconstructing Trochanteric Pressure Sore Defect

The clinical application of anterolateral thigh flap.

The anterolateral thigh flap can provide a large skin paddle nourished by a long and large-caliber pedicle and can be harvested by two-team work. Most importantly, the donor-site morbidity is minimal. However, the anatomic variations decreased its popularity. By adapting free-style flap concepts, such as preoperative mapping of the perforators and being familiar with retrograde perforator dissection, this disadvantage had been overcome gradually. Furthermore, several modifications widen its clinical applications: the fascia lata can be included for sling or tendon reconstruction, the bulkiness could be created by including vastus lateralis muscle or deepithelization of skin flap, the pliability could be increased by suprafascial dissection or primary thinning, the pedicle length could be lengthening by proximally eccentric placement of the perforator, and so forth. Combined with these technical and conceptual advancements, the anterolateral thigh flap has become the workhorse flap for soft-tissue reconstructions from head to toe.

The application of anterolateral thigh flap in post-operative repairing of vulva tumor

Objective The aim of this study was to evaluate the value of the application of anterolateral thigh flap in postoperative repairing of vulva tumor.

More degrees of freedom by using chimeric concept in the applications of anterolateral thigh flap

For obliterating a dead space, especially deep and slender, it is more challenging for a reconstructive surgeon to design a musculocutaneous flap by conventional technique. Tethering at the midway of a musculocutaneous flap while inset is not unusual, and trimming of excess muscle may jeopardize the perfusion of the skin. Based on the lateral femoral circumflex system (LFCS), introducing a chimeric concept into the reconstruction of these difficult wounds will simplify the flap design and give more degrees of freedom to inset the flap. Technique of intramuscular dissection of perforators is frequently demanded. Vastus lateralis muscle based on the distal runoff of the LFCS can be included with sharp dissection. Using chimeric concept in the application of anterolateral thigh flap, the muscle and skin can be considered as individual units although they base on a single pedicle. The dimension of skin and the volume of muscle can be tailored as adequate as desired. While insetting the flap, the lengthy pedicles distal to the bifurcation enhance a three-dimensional reconstruction without difficulty. Chimeric concept of anterolateral thigh flap affords more degrees of freedom for difficult reconstructions.