Consideration of a thin flap as an entity and clinical applications of the thin anterolateral thigh flap

Fascial Free Flap for Reconstruction of the Dorsolateral Hand and Digits: The Advantage of a Thin Contour

Background

Fascial free flaps have been widely used for reconstruction of the hand because they are thin. However, studies reporting objective data regarding the advantages of this approach are lacking. Thus, we report our experience with such flaps.

Methods

Forty-five cases of fascial free flaps between November 2006 and March 2014 were reviewed. Nine cases involving reconstructed dorsal or lateral defects were included. Four anterolateral thigh fascial free flaps and 5 lateral arm fascial free flaps were examined. Maximal flap contour was assessed by measuring reconstructed tissue thickness at the central area from the surface of the skin to below the bone in a vertical manner using ultrasonography and X-ray data. Contralateral regions were examined in the same manner and a comparative analysis was performed. A questionnaire survey regarding aesthetic satisfaction was also administered.

Results

All reconstructed parts had a thicker contour than the contralateral side. The average relative percentage of reconstructed tissue thickness was found to be 152% using ultrasonography and 143% using X-ray imaging. According to the aesthetic satisfaction survey, the average rate of satisfaction for patients was 62%, and satisfaction with the flap contour was 72%.

Conclusions

Using a fascial free flap, the reconstructed tissue was approximately 1.5× as thick as the contour of the normal side, which led to positive responses regarding aesthetic satisfaction.

Reconstruction of foot and ankle defects with a superthin innervated anterolateral thigh perforator flap

BACKGROUND

An anterolateral thigh (ALT) perforator flap can be thinned to an extent to which it is vascularised only by the subdermal plexus. This study presents an innervated flap thinning technique and its application for dorsal foot and ankle resurfacing.

METHODS

A superthin innervated ALT perforator flap was used to repair the dorsal foot and ankle of 12 patients. The perforators were classified according to their variations in the adipose layer, and the corresponding microdissection technique was then applied. The branch of the lateral femoral cutaneous nerve and its accompanying vessels were adopted to construct a sensory flap.

RESULTS

The flap thickness before defatting, which was measured immediately after flap elevation, ranged from 25-45 mm. The average flap thickness after defatting was 4.55 mm (range = 3-6 mm). A total of 11 flaps completely survived, and one flap presented superficial necrosis within a small area (2 cm ×2 cm) in the distal part of the flap. No further flap revision or defatting procedures were required for these patients during an average follow-up period of 16.5 months (range = 10-24 months). In the transferred flap, protective sensibility existed in all cases, and the static two-point discrimination was 13-16 mm.

CONCLUSIONS

The superthin innervated ALT perforator flap may be considered as an ideal strategy for foot and ankle reconstruction.

Basic Perforator Flap Hemodynamic Mathematical Model

Background:

A mathematical model to help explain the hemodynamic characteristics of perforator flaps based on blood flow resistance systems within the flap will serve as a theoretical guide for the future study and clinical applications of these flaps.

Methods:

There are 3 major blood flow resistance network systems of a perforator flap. These were defined as the blood flow resistance of an anastomosis between artery and artery of adjacent perforasomes, between artery and vein within a perforasome, and then between vein and vein corresponding to the outflow of that perforasome. From this, a calculation could be made of the number of such blood flow resistance network systems that must be crossed for all perforasomes within a perforator flap to predict whether that arrangement would be viable.

Results:

The summation of blood flow resistance networks from each perforasome in a given perforator flap could predict which portions would likely survive. This mathematical model shows how this is directly dependent on the location of the vascular pedicle to the flap and whether supercharging or superdrainage maneuvers have been added. These configurations will give an estimate of the hemodynamic characteristics for the given flap design.

Conclusions:

This basic mathematical model can (1) conveniently determine the degree of difficulty for each perforasome within a perforator flap to survive; (2) semiquantitatively allow the calculation of basic hemodynamic parameters; and (3) allow the assessment of the pros and cons expected for each pattern of perforasomes encountered clinically based on predictable hemodynamic observations.

Treating Parry-Romberg Syndrome Using Three-Dimensional Scanning and Printing and the Anterolateral Thigh Dermal Adipofascial Flap

BACKGROUND

As three-dimensional technology becomes more ubiquitous, many plastic surgical applications have emerged. The authors investigate a three-dimensional scanning and printing system for facial soft tissue reconstruction in conjunction with an anterolateral thigh dermal adipofascial flap for the treatment of Parry-Romberg syndrome.

METHODS

Seven patients with facial atrophy of the zygomatic, buccal, and mandibular areas were included. Three-dimensional scanning of each patient's face in conjunction was analyzed with computer-aided design (CAD) to quantify areas of facial asymmetry. Models were then created using three-dimensional printing to map areas of soft tissue deficiency. Free anterolateral thigh (ALT) dermal adipofascial flaps were designed based on the three-dimensional models of soft tissue deficiency.

RESULTS

All flaps survived. One case had a postoperative hematoma. Six patients had restored facial symmetry. One patient required fat injections to obtain symmetry. No patients required revision surgery of their healed flaps for contouring.

CONCLUSIONS

Three-dimensional laser scanning and three-dimensional printing in combination with a free ALT dermal adipofascial flap offer surgeons a precise means to reconstruct facial contour deformities.

Functional assessment: Free thin anterolateral thigh flap versus free radial forearm reconstruction for hemiglossectomy defects

Background

To compare free thin anterolateral thigh (ALT) flap with free radial forearm (FRF) flap in the reconstruction of hemiglossectomy defects, and to introduce our methods and experience in the tongue reconstruction with free thin ALT flap.

Material and Methods

The clinicopathologic data of 46 tongue carcinoma cases hospitalized from December 2009 to April 2014 were obtained from Nangjing Stomatological Hospital, Medical School of Nanjing University. All the subjects were evaluated for the articulation and the swallowing function 3 months after the surgery.

Results

Among these 46 patients, 12 patients underwent tongue reconstruction after hemiglossectomy with ALT flap; 34 patients underwent tongue reconstruction with FRF flap. The differences in the incidence of vascular crisis, the speech and the swallowing function between two groups were not significant (P>0.05).

Conclusions

Thin ALT flap could be one of the ideal flaps for hemiglossectomy defect reconstruction with its versatility in design, long pedicle with a suitable vessel diameter, and the neglectable donor site morbidity.

Key words:Free thin anterolateral thigh flap, free radial forearm flap, hemiglossectomy, reconstruction, morbidity.

Perforator flaps: the next step in the reconstructive ladder?

Perforator flaps are claimed to be a sign of major progress in head and neck reconstruction, but are they a further step up the reconstructive ladder? In this paper I provide a short summary of the development and current clinical use of perforator flaps in the head and neck, which is based on a presentation to the annual meeting of the British Association of Oral and Maxillofacial Surgeons in 2014. I will describe 4 flaps from the lower leg, which are useful specifically for covering intraoral defects, as examples. When we consider the spectrum of new donor sites, and the precision of flap design that is offered by perforator flaps, it becomes evident that the potential of this new technique has not yet been reached.

Perforator Flap versus Conventional Flap

The introduction of perforator flaps represented a significant advance in microsurgical reconstruction. However, confusion has developed due to the erroneous belief that perforator flaps are different from conventional flaps. The concept of the perforator is not new, but is an idea that evolved from the conventional flap. In fact, some of the flaps used by microsurgeons were perforator flaps. The only difference is the anatomical level of the blood vessels involved; the perforator concept is focused on the distal circulation, so-called 'perforator'. Therefore, thinner sections of tissue can be taken from the conventional donor sites of myocutaneous flaps. With the use of perforators, there are no longer "flap of choice" for specific reconstructions, because conventional donor sites have become universal donor sites, enabling the harvesting of a variety of flaps. Moreover, depending on the surgeon's ability, any flap can be utilized as a perforator-based island flap whose source vessel has been completely preserved. Therefore, tissues can be efficiently customized and tailored into any configuration required for reconstruction. The application of perforator flap technique enables more precise dissection, and allows more selective harvesting of thinner flaps, which will expand options in reconstructive surgery. No doubt the technique will continue to evolve.

The search for the ideal thin skin flap: superficial circumflex iliac artery perforator flap--a review of 210 cases

BACKGROUND

The superficial circumflex iliac artery perforator flap is a thin skin flap that can be harvested reliably and quickly from the groin. It is ideal for single-stage resurfacing of cutaneous defects. The donor site heals well and is easily concealed. The authors clarify the anatomy, simplify the flap harvest technique, and outline the modifications to expand the applications of this flap.

METHODS

Between January of 2011 and January of 2014, 210 superficial circumflex iliac artery perforator flaps were performed at Asan Medical Center. The flaps were used for head and neck reconstruction (n = 13), upper extremity reconstruction (n = 19), lower limb reconstruction (n = 176), and reconstruction in the trunk region (n = 2). All flaps were raised suprafascially using a free-style approach. The anatomy of the flap, the elevation technique, and the results of the reconstruction were assessed.

RESULTS

The average flap size was 86 cm, ranging from 17.5 to 216 cm (mean vertical width, 6.3 cm; mean transverse length, 13.5 cm). Total flap loss occurred in 10 flaps (4.8 percent). Two patients developed complications at the donor site. Debulking surgery was performed in five patients (2.4 percent). The average follow-up period was 400 days (range, 30 to 1690 days).

CONCLUSIONS

The superficial circumflex iliac artery perforator flap enables accurate resurfacing of moderate-size cutaneous defects. It is vascularly robust and versatile for use in different sites. This is the thinnest skin flap presently available and has the potential to become the new workhorse flap for resurfacing moderate-size skin defects.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, IV.

Practical considerations for perforator flap thinning procedures revisited

BACKGROUND

A thin perforator flap is one of the best methods for covering defects. This study aimed to revisit and further test the rapidly advancing field of flap thinning techniques.

METHODS

We performed two cadaveric studies to test the known flap thinning methods, and then applied these methods to a clinical series. In the first study, five cadavers were used to observe the anatomical relation of the perforator with the subdermal plexuses and the subcutaneous fat layer by injecting a colored latex solution. The second study was done on four cadavers independently from the first study. Last, a clinical series was performed on 15 patients.

RESULTS

The areolar fat lobules of 10 anterolateral thigh perforator (ALT), seven deep inferior epigastric artery perforator (DIEAP), and six thoracodorsal artery perforator (TAP) flaps were dissected to reduce the flap thickness guided by the colored vascular pattern. On average, the ALT, DIEAP, and TAP flaps were reduced to 32.76%±9.76%, 37.01%±9.21%, and 35.42%±9.41%, respectively. In the second study, the areolar fat lobules were directly dissected in six ALT, six TAP, and four MSAP flaps, and an average reduction in flap thickness of 53.41%±5.64%, 52.30%±2.88%, and 47.87%±6.41%, respectively, was found. In the clinical series, 13 out of the 15 cases yielded satisfactory outcomes with an average thickness reduction of 37.91%±7.15%.

CONCLUSIONS

These multiple studies showed that the deep fat layer could be safely removed to obtain a thin yet viable perforator flap. This evidence suggests that the macroscopic flap thinning technique can achieve thin flaps. Surgeons should consider this technique before embracing the latest technique of supermicrosurgery.

Transfer of anterolateral thigh flaps in elderly oral cancer patients: complications in oral and maxillofacial reconstruction

PURPOSE

Although a promising approach, the use of anterolateral thigh (ALT) free flaps has been limited in the reconstruction of oral and maxillofacial defects in elderly patients. The aim of this study was to estimate the frequency of postoperative complications and identify factors associated with complications.

PATIENTS AND METHODS

The authors designed and implemented a retrospective study on the frequency of postoperative complications in elderly patients. They enrolled a sample composed of patients who underwent ALT free flap transfers for the repair of defects created during oral and maxillofacial cancer surgery from February 2002 to March 2013. The χ(2) test, t test, and multivariate regression model were used.

RESULTS

A total of 1,100 patients were studied (859 men and 241 women). One hundred four patients (9.5%) were at least 70 years old (elderly group) at the time of surgery; the other 996 patients were younger than 70 years (younger group). The overall success rate of ALT free flap transfer was 97.2% (97.0% in the younger group, 99.0% in the elderly group; P > .05). The overall complication rate was 27.5% (27.2% in the younger group, 29.8% in the elderly group; P = .572). Multivariate analysis showed that operation time, American Society of Anesthesiologists class, and comorbidity were independent risk factors for postoperative complications in elderly patients.

CONCLUSIONS

Oral and maxillofacial reconstruction using ALT free flaps in elderly patients can achieve outcomes similar to those obtained in younger patients. Limiting the operation time is important for improving surgical outcomes.

Anterolateral thigh flap thinning: techniques and complications

BACKGROUND

A thinned anterolateral thigh flap is often necessary to achieve optimal skin resurfacing. In this article, we describe the techniques available for immediate flap thinning and the vascular complications that can follow trimming.

MATERIALS AND METHODS

A systematic literature review was performed to identify the different thinning techniques and any possible complications. Data were identified by performing a systematic search on Medline, Ovid, Embase, the Cochrane Database of Systematic Reviews, Current Contents, PubMed, Google, and Google Scholar. We cross-referenced the identified articles and conference abstracts in the English and French languages.

RESULTS

The study selection process was adapted from the Preferred Reporting Items for Systematic Reviews and Meta-Analyses statement, and 34 were articles compiled by using the study inclusion criteria. These articles were then reviewed for the author name(s), the publication year, the flap dimensions, the flap thickness (both before and after thinning), the perforator type, the type of flap transfer, the complications that followed the thinning, the thinning technique used, the amount of deep fascia preserved around the perforator, the number of cases in the study, the area of application, and the technique used for donor-site closure. We analyzed the possible vascular complications that stemmed from the flap area site selected, the flap thickness, the thinning technique used, and whether the deep fascia was spared.

CONCLUSIONS

The subfascial dissection of anterolateral thigh flaps revealed that the safest method for minimizing vascular complications accounted for a 3.1% probability for marginal necrosis, which can be managed conservatively. The overall breakdown of the vascular-related complications that followed flap thinning totals 13.4% and can be broken down as follows: partial flap loss of 4.1%, partial distal necrosis of 3.5%, marginal necrosis of 3.1%, and total flap loss of 2.5%.

Soft tissue reconstruction of the oral cavity: a review of current options

PURPOSE OF REVIEW

This article provides an overview of the principles of soft tissue reconstruction of the oral cavity, and reviews the recent clinical outcomes for described options.

RECENT FINDINGS

For small defects of the oral cavity, healing by secondary intention and primary closure are both excellent options and may provide functionally superior results. In defects where a split-thickness skin graft is appropriate, acellular dermis may provide results that are at least as good at lower cost. Free flaps, particularly the radial forearm and the anterolateral thigh, have become the mainstays of oral cavity soft tissue reconstruction for larger defects. Recent clinical series suggest that relatively novel regional flaps provide a reasonable alternative to free flap reconstructions for moderate and some large soft tissue defects.

SUMMARY

Soft tissue reconstruction of the oral cavity is a complex task with significant functional implications. There are a large number of reconstructive options available. Systematic appraisal of the defect and options allows the reconstructive surgeon to optimize functional potential by choosing the most appropriate reconstructive option.

Hemisoleus muscle flap in the reconstruction of exposed bones in the lower limb

OBJECTIVES

To evaluate the efficacy of soleus muscle flap for covering complex defects of the middle and lower leg. The study also outlines functional gain after the reconstructive procedure, the donor site morbidity and the technical details of the operative procedure.

METHOD

This prospective study consists of a total of 40 patients with middle and lower third defects with exposed bone present in the leg. In all cases, a proximally-based hemisoleus flap was used. All patients were between 15-65 years of age. Depending upon the position of the defect and ease of rotation, either the medial or lateral hemisoleus was used to cover the defects. In 7 patients with large defects, both the hemi-gastrocnemius and hemisoleus flap were used.

RESULTS

Most of the patients studied (52.5%) had defects in the middle third of their leg. A further 12(30%) patients had defects over the upper part of the lower third of the leg and 7(17.5%) cases involved large defects exposing bones comprising both the middle and lower thirds of the leg. All the flaps survived well except 5 which developed partial skin graft loss, and 1 where complete flap loss was observed. Out of 5 patients who developed partial graft loss, 3 patients achieved complete healing by regular dressings and 2 required regrafting. The patient who developed complete flap loss required below knee amputation. No donor site morbidity was observed, except minimal depression in the posterior leg.

CONCLUSION

Due to a high degree of reliability, versatility, minimal donor site morbidity, less operating time, low cost and good functional gain, this procedure is highly suitable for the treatment of complex middle and lower leg defects.

DECLARATION OF INTEREST

There were no external sources of funding for this study. The authors have no conflicts of interest to declare.

Lower extremity soft tissue defect reconstruction with the serratus anterior flap

Reconstruction of limb-threatening lower extremity defects presents unique challenges. The selected method must provide adequate coverage of exposed bone, joints, and tendons while maximizing function of the limb. The traditional workhorse flaps, the free latissimus dorsi and rectus abdominis flaps, have been associated with donor site morbidity and bulkiness that can impair rehabilitation. We report a case series (n = 18) in which the free serratus anterior muscle flap and split thickness skin graft (STSG) was used for lower limb soft tissue coverage. Injuries were due to diabetes (9/18), trauma (7/18), and chronic venous stasis (2/18). A 94% flap survival rate was observed and all but one patient was ambulatory. No donor site morbidity was reported. Our series demonstrates that serratus anterior is an advantageous, reliable free flap with minimal donor site morbidity.

Anthropomorphic and perforator analysis of anterolateral thigh flap in Indian population

Background:

Anterolateral thigh (ALT) flap is one of the most common flaps in the reconstruction armamentarium of plastic surgeons, but there is no published data about the flap characteristics in the Indian population. The aim of this study is to analyse the anthropomorphic characteristics of the ALT flap and the perforator details in Indian population.

Materials and Methods:

ALT flap details were studied in 65 patients of Indian origin comprising 45 males and 20 females. The study period is from August 2011 to July 2012. A prospective database of the Doppler findings, perforator and pedicle details and the flap morphology were maintained. The variables are analysed by using the SPSS, PASW statistics 18 software IBM^®.

Results:

In nearly 75% of cases, the perforator was found within 4 cm of the pre-operative Doppler markings. The percentage of musculocutaneous and septocutaneous perforators was 61.8% and 38.2% respectively. The pedicle variation was found in 6 cases (9.23%). The average thickness of the thigh skin in Indians is similar to the western people, but thicker than the other Asian people. Flap thinning was performed in nine patients without any major complications.

Conclusion:

The perforator details and type in the Indian population are similar to the published reports from other parts of the world. We advise pre-operative Doppler examination in possible cases. The variation in pedicle anatomy should not be overlooked to avoid complications. The thickness of subcutaneous tissue of the flap is higher in Indians, but still can be safely thinned. The data of this study will serve as a guide for the ALT flap characteristics in Indian patients.

The superficial fascia as a new plane of elevation for anterolateral thigh flaps

The elevation plane for the anterolateral thigh perforator flap is either subfascial or suprafascial approach. But extensive debulking is frequently performed with possibilities of endangering viability. We hypothesized that by elevating the flap in the layer between the deep and the superficial fat, the superficial fascia, we will be able to achieve elevation of a thin and hemodynamically reliable flap without wasting human tissue. This approach was performed on 54 cases. The average weight was 68.1 kg, and average body mass index was 24.6 kg/m. Primary closure was performed on 18 cases and skin grafts on 36 cases. Evaluation for flap survival, contour of the flap, and donor site were performed. All 54 flaps were successfully elevated with at least one viable perforator with this approach. Total flap loss was noted in 1 case, resulting in a 98% survival rate. Secondary debulking was performed on 3 cases whose body mass index was >29. Regarding donor site, the primarily closed sites showed no complications, and the grafted skin over the deep fat leads to similar contour compared with the contralateral side. The study shows that this new plane can be used as a level of elevation while acting as a guide to promise adequate blood supply based on the subdermal plexus.

Microsurgical free flaps: Controversies in maxillofacial reconstruction

Reconstructive microsurgery for oral and maxillofacial (OMF) defects is considered as a niche specialty and is performed regularly only in a handful of centers. Till recently the pectoralis major myocutaneous flap (PMMC) was considered to be the benchmark for OMF reconstruction. This philosophy is changing fast with rapid advancement in reconstructive microsurgery. Due to improvement in instrumentation and the development of finer techniques of flap harvesting we can positively state that microsurgery has come of age. Better techniques, microscopes and micro instruments enable us to do things previously unimaginable. Supramicrosurgery and ultrathin flaps are a testimony to this. Years of innovation in reconstructive microsurgery have given us a reasonably good number of very excellent flaps. Tremendous work has been put into producing some exceptionally brilliant research articles, sometimes contradicting each other. This has led to the need for clarity in some areas in this field. This article will review some controversies in reconstructive microsurgery and analyze some of the most common microvascular free flaps (MFF) used in OMF reconstruction. It aims to buttress the fact that three flaps-the radial forearm free flap (RFFF), anterolateral thigh flap (ALT) and fibula are the ones most expedient in the surgeon's arsenal, since they can cater to almost all sizeable defects we come across after ablative surgery in the OMF region. They can thus aptly be titled as the workhorses of OMF reconstruction with regard to free flaps.

A systematic review of anterolateral thigh flap donor site morbidity

PURPOSE

The anterolateral thigh (ALT) flap is widely used in reconstruction. Its advantage over other flaps is its purported minimal donor site morbidity. The present systematic review summarizes the types of complications and their incidence with this flap. A secondary objective is to delineate factors that influence these complications and make recommendations to avoid them.

METHOD

Two independent assessors undertook a systematic review of the literature using multiple databases. All patients with ALT flap reconstruction for any defect were included. Donor site complications including lateral thigh paresthesia, musculoskeletal dysfunction, hypertrophic scarring, wound breakdown, infection, donor site pain, seroma, hematoma, compartment syndrome and muscle necrosis were extracted from identified articles and tabulated. Based on the number of pooled events and the number of cases performed, an incidence rate was calculated.

RESULTS

Forty-two relevant articles were identified that included 2324 flaps. Of the 2324 flaps, the majority were fasciocutaneous (n=737), and 1303 of the flaps were used in head and neck reconstruction. The incidence of complications were: lateral thigh paresthesia (24.0%); musculoskeletal dysfunction (4.8%); hypertrophic scarring or wound dehiscence (4.8%); donor site pain (3.3%); seroma (2.4%); infection (2.2%); hematoma (0.7%); compartment syndrome (0.09%); and partial muscle necrosis (0.09%).

CONCLUSION

Lateral thigh paresthesia is the most common complication. Severe complications such as compartment syndrome and muscle necrosis can occur, but are rare. Preservation of the lateral cutaneous nerve of the thigh, femoral motor nerve branches and deep fascia decreases the risk of complications. The degree of vastus lateralis disruption did not show a significant impact on musculoskeletal dysfunction.

Comparison of anterolateral thigh, lateral arm, and parascapular free flaps with regard to donor-site morbidity and aesthetic and functional outcomes

BACKGROUND

The purpose of this study was to compare the morbidity and the aesthetic and functional outcomes of primarily closed donor sites of three commonly used free flaps.

METHODS

Sixty patients who had undergone free flap reconstruction (20 anterolateral thigh, 20 parascapular, and 20 lateral arm flaps) were included in this study. The average follow-up time was 50 months (range, 6 to 135 months). Patients assessed subjective donor-site morbidity and satisfaction with the aesthetic and overall functional result using a self-report questionnaire. Outcome measures were the Disabilities of the Arm, Shoulder and Hand questionnaire; the Lower Extremity Functional Scale; and the Medical Outcomes Study 36-Item Short-Form Health Survey questionnaire.

RESULTS

No significant differences in range of motion or in questionnaire, scale, or survey scores were detected. Sensory disorders were present in 100 percent (lateral arm), 90 percent (anterolateral thigh), and 45 percent (parascapular). No correlation to flap size was detected (187 cm for parascapular and anterolateral thigh, and 70 cm for lateral arm flaps). Postoperative complications were seromas (parascapular, n = 2), hematomas (parascapular, n = 1; lateral arm, n = 2), and dehiscence (n = 4 for each flap). Patient satisfaction with the donor site was rated 2.9 for lateral arm and anterolateral thigh flaps and 2.5 for parascapular flaps (1 = excellent, 6 = poor). Seventy percent of anterolateral thigh, 85 percent of lateral arm, and 100 percent of parascapular flap patients would choose their flap again.

CONCLUSION

In terms of reducing donor-site morbidity, the parascapular flap represents a valuable alternative to the anterolateral thigh and lateral arm flaps, but side positioning and increased seroma are drawbacks.

Clinical application of thin anterolateral thigh flap in the reconstruction of intraoral defects

OBJECTIVE

The purpose of this study was to assess the clinical features and therapeutic efficacy of intraoral defect reconstruction with thin anterolateral thigh flaps.

METHODS

A total of 34 patients underwent simultaneous tumor resection and intraoral defect reconstruction with free thin anterolateral thigh flaps.

RESULTS

There were 16 male and 18 female patients; the ratio of males to females was 0.9:1; the mean age was 55.4 years. In these 34 patients, 26 flaps were musculocutaneous perforators (76.5%) and 8 flaps were septocutaneous perforators (23.5%). Partial loss of flap occurred in 2 patients (5.9%).

CONCLUSIONS

The free thin anterolateral thigh flap was the ideal soft tissue flap in intraoral defect reconstruction. This thin flap presents good functional results at the receiving site with the additional advantages of minimal donor-site morbidity and a high level of patient satisfaction.

Use of the fix and flap approach to complex open elbow injury: the role of the free anterolateral thigh flap

Background

Complex elbow injuries with associated nerve, muscle, or joint injury commonly develop post-inury stiffness. In order to preserve function, joint congruency, elbow stability and durable wound coverage must be achieved in a timely manner.

Methods

A retrospective review of patients who underwent orthopaedic fixation followed by free anterolateral thigh (ALT) flap soft tissue coverage was performed. Five patients were identified and included in this study.

Results

We present a series of 5 cases managed with this principle. Soft tissue defects ranged in size from 4×9 cm (36 cm²) to 15×30 cm (450 cm²) and were located either posteriorly (n=4) or anteriorly (n=1). Associated injuries included open fractures (n=3) and motor nerve transection (n=2). Wound coverage was achieved in a mean duration of 18.8 days (range, 11 to 42 day). There were no flap failures and no major complications. The mean postoperative active elbow motion was 102° (range, 45° to 140°).

Conclusions

In our small series we have highlighted the safety and utility of using the free ALT flap in complex elbow injuries. The ALT flap has many advantages which include abundant skin and subcutaneous tissue; vascularised vastus lateralis muscle that was used in our series to obliterate dead space, provide a vascular bed for nerve grafts and combat infection; and, access to fascia lata grafts for reconstruction of the triceps tendon.

Microsurgical coverage reconstruction in upper and lower extremities

Trauma is one of the main causes of upper- and lower-limb defects. Limb injuries frequently result in complex defects, hence reconstruction can be demanding. The basic principles of trauma management and methods of reconstruction are analyzed. Then, the evolution of free tissue transfer is reviewed with particular attention to the use of anterolateral thigh flap in reconstruction of upper- and lower-limb trauma cases. The anterolateral thigh flap is the workhorse flap in our department due to its versatility in the reconstruction of complex defects. Finally, the concept of free-style perforator flaps is presented. Microsurgery has supplied the armamentarium of the plastic surgeon with a very powerful tool. Essentially, microsurgery may almost always provide a solution in cases of complex defects that cannot be covered with the simpler options of the reconstructive ladder. The recently acquired perforator flap concept will gradually become the most popular method of microsurgical reconstruction, as it minimizes donor-site morbidity and replaces "like tissue with like tissue."

Is primary thinning of the anterolateral thigh flap recommended?

BACKGROUND

Although primary thinning of the anterolateral thigh (ALT) flap has been successful in Asia, clinical and anatomic studies have demonstrated that this may be inadvisable in Western patients. Recent reports have demonstrated successful thinning of the ALT using smaller flaps. A systematic review was attempted, to assess whether ALT size affects the incidence of vascular compromise after primary thinning.

METHODS

A systematic review was undertaken to examine the relevant literature. Student t-test was used to compare flaps that did and did not have complications. Fisher exact test was used to compare outcomes of flaps measuring less than and greater than 150 cm2.

RESULTS

Eleven articles met the inclusion criteria. Eighty-eight ALT flaps were reported, and vascular compromise was seen in 11 (12.5%). The average size of flaps that demonstrated necrosis was 180.73 cm2; those without necrosis averaged 123.19 cm2 (P = 0.06). Flaps >150 cm2 had a significantly increased rate of compromise (25.93% vs. 6.56%; P < 0.05).

CONCLUSIONS

A systematic literature review confirms that it is inadvisable to primarily thin large ALT flaps in the Western population. When large ALT flaps are required, primary thinning must be avoided to keep linking vessels intact.

Clinical application of free anterolateral thigh flap in the reconstruction of intraoral defects

OBJECTIVE

The purpose of this study was to assess the clinical features and therapeutic efficacy of the intraoral defects reconstruction with 3 types of anterolateral thigh flaps.

STUDY DESIGN

The clinicopathologic data of 39 cases with oral tumors were obtained from the School of Stomatology, Nanjing University Medical Center, from December 2008 to June 2010. These patients underwent the simultaneous tumor resection and intraoral defects reconstruction with free anterolateral thigh flaps.

RESULTS

There were 22 male and 17 female patients; the ratio of male to female was 1.3:1; the mean age was 56.1 years. Twenty-two of the anterolateral thigh flaps were musculocutaneous flaps (56.4%), 8 were fasciocutaneous flaps (20.5%), and 9 were ultrathin flaps (23.1%). Five patients required operative exploration in the perioperative period. Three flaps were thrombotic events, 1 flap was hematoma, and 1 flap was twisting of perforator. After the salvages, 1 flap was partial failure, 1 flap was total failure, and the other 3 flaps were complete survival.

CONCLUSIONS

The free anterolateral thigh flap was the ideal soft tissue flap in the intraoral defects reconstruction. This flap presents good functional results at the receiving site with the additional advantages of minimal donor-site morbidity and a high level of patient satisfaction.

Peroneal perforator flap for intraoral reconstruction

Thin and pliable flaps with long, high calibre pedicles are ideally suited to lining the inside of the mouth. The radial forearm free flap has been our flap of choice until now, but we are unhappy with its potential for complications at the donor site. As an alternative, 30 patients have been treated in our unit with peroneal perforator flaps. Magnetic resonance (MR) angiography is necessary preoperatively to identify major perforating vessels. Flaps were raised using a lateral approach after the position of the most suitable perforator had been marked on the skin. The skin flaps were outlined in the proximal half of the lower leg with a maximum width of 5 cm to allow for direct closure of the wound. Five patients (of the original 35) were excluded after the results of MR angiography were known. All perforators identified on MR angiography could be exposed in the proximal half of the lower leg and most had a septocutaneous course. Reconstructions were in the floor of the mouth (n=16), tongue (n=11), and buccal mucosa (n=3). All but one flap survived with satisfactory functional results. The donor site morbidity was low. With the aid of MR angiography the peroneal perforator flap is a safe option for intraoral reconstruction. For small and medium sized defects we think that this flap is a good alternative to others, particularly if direct closure at an inconspicuous donor site is desired.

Versatility of the pedicled anterolateral thigh flap

The pedicled anterolateral thigh flap is a useful addition to our armamentarium. It provides excellent cover for defects in the lower abdomen, pelvis, and perineum. It also has the added advantage of not sacrificing any muscle, thereby minimizing the risk for donor morbidity. This article reviews the major applications of the proximally pedicled anterolateral thigh flap, describes the technique of flap harvest, and discusses techniques of flap transposition as well as pointing out some potential hazards.