Some observations on 112 pectoralis major myocutaneous flaps

Distal positioning of the skin paddle of pectoralis major myocutaneous flap in head and neck reconstruction

BACKGROUND

To assess outcomes of pectoralis major myocutaneous flap (PMF) wherein the skin paddle (SP) was positioned with its distal portion extending beyond the lower border of pectoralis major by ≥2 cm (PMF-d).

METHODS

Consecutive head and neck reconstructions with PMF-d (n = 110). SP dimensions l2 (distal extent below the lower border of pectoralis major), l1 (proximal extent above lower border of pectoralis major), and b (breadth) were recorded. Endpoints were SP necrosis, recipient dehiscence, early fistula, and persistent fistula.

RESULTS

Median values of l2 , l1 , and b were 3.0, 6.0, and 6.0 cm, respectively. When l2  = 2.0-3.0 cm, SP necrosis occurred in only one (1%) subject (with obesity). When l2 was ≥3.5 cm, necrosis occurred in four (16%) subjects, three of whom also had l1 /l2  < 2.0 (proximal SP < 67% of entire SP). Statistically, increased l2 was the only risk factor for necrosis (p = 0.001). Overall, incidence of recipient dehiscence, early fistula, and persistent fistula were 32 (29%), 20 (20%), and 3 (3%), respectively. Persistent fistula occurred only in the setting of SP necrosis and/or re-irradiation.

CONCLUSION

Careful patient selection, adequate proximal SP, and l2  = 2.0-3.0 cm is associated with a negligible risk of necrosis. The enhanced reach and laxity and additional skin surface area and soft tissue volume conferred with PMF-d facilitate recipient wound healing.

A Meta-analysis of Complication Rates Among Various Surgical Modifications of Pectoralis Major Myocutaneous Flap

The purpose of this study is to aggregate and summarize the complication rates among various modified techniques of pectoralis major myocutaneous flap harvesting. Various databases were searched from its inception to September 2020. Studies describing surgical management of head and neck oncologic reconstruction using pectoralis major myocutaneous flap and its surgical modifications were included in study. All included studies: (1) described a pectoralis major flap harvesting technique categorized by author as conventional technique, bipaddle or bilobed flap, segmental flap, flap transfer using subclavicular route, skin paddle over Pectoralis Major, Flap with Multiple vascular supply, U shaped skin paddle, modified short incision technique; and (2) reported the number of postoperative complications in participants. Meta-analysis was performed in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. A total 183 studies were included. Segmental flap (0.20%), flap with multiple vascular supply (5.18%) and parasternal skin flap (6.38%) had the highest rates of total complications and were the only techniques to show a statistically significant increase in odds ratio compared with conventional technique (odds ratio 1.89, 9.05 and 7.26, respectively, P < 0.05). Bipaddle flap (57.48%) and u shaped skin flap (78.05%) show statistically significant decrease in odds ratio as compared to conventional technique. Among all the modifications in surgical technique of pectoralis major myocutaneous flap harvesting bipaddle flap and u shaped skin flap show least total complication rates. But on the contrary rates of partial flap necrosis and fistula are significantly higher in bipaddle flap as compared to conventional technique. As such, the choice of surgical technique should primarily be made based on the defect size, patient selection and surgeons' discretion rather than the presumed complication rate.

Bilobed PMMC in Females: Our Challenging yet Meritorious Experience

The gold standard reconstructive options for full-thickness defect of the oral cavity after resection of malignant lesions are the free flaps. But in developing nations due to resource constraints, it cannot be offered to all. Hence, pectoralis major myocutaneous (PMMC) flap as bilobed flaps is most commonly used. Bilobed flaps are technically demanding, and in females, it is more challenging due to higher complication rates especially in large breasts. There has been no major reported data evaluating outcomes of bilobed PMMC in females. This is a retrospective evaluation of outcomes of patients who underwent the bilobed PMMC flap reconstruction for full-thickness defect of the oral cavity after resection of malignant lesions from June 2018 to December 2019. Out of 80 patients, all patients ultimately had adequate tissue coverage for the defect with acceptable facial aesthetics. Functional outcomes with regards to oral continence, speech and swallowing were encouraging. Our study had 33.75% flap-related complications. Fifteen percent of patients developed varying degrees of flap loss, of which only 3.75% had total flap loss and 11.25% had partial flap loss which was managed accordingly. Our study concludes that with careful planning, raising of flap based on sound anatomic concepts and applying oncoplastic techniques, shortcomings of bilobed female PMMC can be addressed and still used as suitable alternatives for free flap for full-thickness oral cavity defects in limited resource settings.

The Use of Pectoralis Major Musculocutaneus and Deltopectoral Flaps in Oromandibular Defects Reconstruction

The main complication in patients with combined treatment of head, neck, mandibular and maxillary tumors is osteoradionecrosis, which appears after radiation therapy. Radiation therapy is widely used to treat cancer, but growing concern is related to the risk of osteoradionecrosis after treatment. This can occur after radiation therapy. Below, we would like to describe the treatment of osteoradionecrosis, which appeared 5 years after radiation therapy in a 54-year-old male patient. In 2012, a patient in Turkey was diagnosed with adenocystic carcinoma of the tongue base, and surgery was performed to remove the tumor after the patient underwent a course of radiotherapy. In 2016, the patient underwent again a surgery for tumor recurrence. In December 2017, the patient was admitted to our clinic with osteoradionecrosis. We performed segmental resection of the mandible, type I right-sided modified neck dissection, reconstruction of the mandible with a titanium plate and a pectoralis major muscle skin flap. The technique described in this case is the insertion of a well-vascularized tissue into the pre-irradiated and necrotic hypovascular region of the mandible with a skin-muscle flap of the pectoralis major muscle wrapped around the plate for reconstruction. As a result, a pectoralis major flap coverred the mouth floor on internal side and the outside skin defect was covered with a deltopectoral one. The viability of the skin-muscle flap of the pectoralis major muscle was assessed using clinical monitoring, checking the flap every four hours for the first 3 days. This study describes a successful outcome.

Bipaddle Pectoralis Major Myocutaneous Flap for Single Stage Reconstruction of Oromandibular Defects

Reconstruction of full thickness defects after resection of oral cancer is a challenge. Although microvascular free flaps are considered the first choice, their use is limited in the developing regions by availability of resources and the expertise. In this study, we have presented our experience with the use of bipaddle pectoralis major myocutaneous (PMMC) flap as a single stage reconstruction option for defects of the oral cavity. After undergoing resection of oral cancer, 12 patients with full thickness defects of the oral cavity were reconstructed using bipaddle/bilobed/double-island/folded PMMC flap in a single stage procedure. The results of PMMC flaps were studied. All the patients had through and through defects of oral cavity, which were reconstructed in a single stage surgery using bipaddle PMMC flap. The overall complication rate was 33.33%, however, there were no cases of total flap necrosis. The mean time of reconstruction was 141.25 min with average hospital stay of 18.5 days. PMMC flap is a versatile flap with dedicated blood supply, good bulk and great reach. With limited availability of resources, it can be used as a single stage reconstruction technique in oral cavity defects with good results.

Preservation of Aesthetics of Breast in Pectoralis Major Myocutaneous Flap Donor Site in Females

BACKGROUND AND OBJECTIVES

In females, raising a pectoralis major myocutaneous flap is challenging and primary closure of flap donor site causes breast deformity with medial displacement of nipple areola complex. To avoid this distortion, a new method of donor site closure is devised.

METHODS

A parasternal skin paddle which has better vascularity is planned while doing a pectoralis major myocutaneous flap in females and a lateral flap planned along the lateral breast curve is used to cover the donor site. The lateral flap donor site is primarily closed. This prevents medial displacement of nipple areola complex.

RESULTS

A total of 47 patients underwent donor site flap closure technique. Minor complications in form of marginal necrosis near the tip of the flap were observed in 10.6 % patients. The donor breast of all these PMMC flaps had good contour and aesthetic positioning of nipple areola complex.

CONCLUSION

Donor site morbidity with respect to breast distortion has not been studied so far in case of females so our study stands unique in this aspect. Using this technique of planning PMMC in females ensures a skin paddle of better vascularity and restores the breast aesthetics.

Is there still a role for bilobed/bipaddled pectoralis major myocutaneous flap for single-stage immediate reconstruction of post ablative oncologic full-thickness defects of the cheek?

INTRODUCTION

Reconstruction of full-thickness defects of the head and neck is a challenge. In this clinical study, we assessed the role of the bilobed/bipaddled pectoralis major myocutaneous flap (PMMF) for the reconstruction of large full-thickness defects of the cheek, after resection of oral cancer.

MATERIALS AND METHOD

After resection of oral cancer, 62 cases of through-and-through defects of the oral cavity were reconstructed using folded/bipaddled/bilobed PMMF flap. All were males and presented with locally advanced oral squamous cell carcinoma (SCC), which involved the buccal mucosa and gingivo buccal sulcus (n = 53) and gingivo buccal sulcus + lip (n = 9).

RESULTS

All the flaps survived, and no patient developed a major complication. The most common complication in the current series was wound dehiscence. In 8% of cases, wound dehiscence was found at the donor site; in 6.45% of cases, dehiscence was present at the recipient site; and in 4.83% of cases, dehiscence was present at the neck. All the wounds healed secondarily with regular dressings.

CONCLUSION

The bilobed/bipaddled PMMF is a straightforward and reliable flap that provides an effective mechanism to reconstruct full-thickness cheek defects while avoiding the complexity of microvascular free flaps. The bilobed/bipaddled PMMF has become our preferred reconstruction option for large full-thickness defects after resection of oral carcinoma.

Outcomes of pectoralis major myocutaneous flap in female patients for oral cavity defect reconstruction

PURPOSE

Although much has been mentioned in the literature worldwide regarding the outcome of pectoralis major myocutaneous flaps (PMMFs), hardly any studies are available that mention the outcome of PMMFs in female patients. It has been presumed that complication rates after PMMF reconstruction in female patients are higher because of the presence of more adipose tissue in the flap. The objective of this study was to analyze our data regarding the outcomes of PMMFs in female patients with oral cancer undergoing reconstruction after tumor ablation.

MATERIALS AND METHODS

In this retrospective study from January 2008 to May 2012, performed in a single institution in south India, we have analyzed our data on PMMFs in 140 female patients with oral cancer. The operative technique used was essentially the same as that described originally by Ariyan. However, to preserve the deltopectoral flap area, the incision was appropriately modified in a manner as described by Schuller.

RESULTS

The mean age of the patients was 52.36 years, with a range from 30 to 76 years. They presented mostly with ulcers or ulceroproliferative lesions. Most of the patients had a history of tobacco and betel nut chewing. All of them underwent composite resection and reconstruction with PMMF under general anesthesia. Of the patients, 30 (21.4%) had complications, comprising infection (8), superficial flap necrosis (11), combined wound infection and superficial flap necrosis (3), total flap failure (2), and orocutaneous fistula (6).

CONCLUSIONS

PMMF reconstruction is a reliable and cosmetically acceptable method of reconstruction in female patients for oral cavity defects after tumor ablation.

Soft tissue reconstruction after hemimandibulectomy in oral malignancies: a retrospective study

AIMS

The present study was under taken to evaluate the efficacy of various local and regional soft tissue flaps used for reconstruction after excision of various malignant lesions of the mouth and also to evaluate complications with length of hospital stay after the reconstruction.

MATERIALS AND METHODS

The study was a record based retrospective analysis of 127 patients who were histologically proven squamous cell carcinoma of the oral cavity for which excision of the lesion along with segmental mandibulectomy and primary reconstruction with local or regional flaps was the treatment modality.

RESULTS

The male:female mean age is 48.27:48.79. The Z-proportionality test for intra oral reconstruction showed 5% level of significance (P < 0.05) between pectoralis major myocutaneous flap (PMMC) and other flaps. Difference between deltopectoral (DP) and PMMC, PMMC and primary closure at 1% level of significance, i.e. P < 0.01 was found for extra oral defects. The mean stay was found to be 31.31 days. Recurrence rate of 11% was reported.

CONCLUSION

A total of 127 patients formed the study group. In the absence of bone reconstruction PMMC still continues to be the "work horse" of reconstruction following wide excision and hemimandibulectomy.

Breast cancer in the lower jaw after reconstructive surgery with a pectoralis major myocutaneous flap (PMMC) -- a case report

For head and neck as well as for oromaxillofacial surgery, the use of the pectoralis major myocutaneous (PMMC) flap is a standard reconstructive technique after radical surgery for cancers in this region. We report to our knowledge for the first development of breast cancer in the PMMC flap in a 79 year old patient, who had undergone several operations in the past for recurring squamous cell carcinoma of the jaw. The occurrence of a secondary malignancy within the donor tissue after flap transfer is rare, but especially in the case of transferred breast tissue and the currently high incidence of breast cancer theoretically possible. Therefore preoperative screening mammography seems advisable to exclude a preexisting breast cancer in female patients undergoing such reconstruction surgery. Therapy for breast cancer under these circumstances is individual and consists of radical tumor resection followed by radiation if applicable and a standard systemic therapeutic regimen on the background of the patients individual prognosis due to the primary cancer.

Transaxillary-subclavian transfer of pedicled latissimus dorsi musculocutaneous flap to head and neck region

Free-tissue transfer is the reconstruction of choice for most head and neck defects. However, pedicled flaps are also used, especially in high-risk patients and after failure of a free flap. The aim of this study was to compare transaxillary-subclavian pedicled latissimus dorsi musculocutaneous (PLDMC) flap, pectoralis major musculocutaneous flap, and free-tissue transfer for head and neck reconstruction in American Society of Anesthesiologists grades II and III patients. During the last 4 years, PLDMC flap with a modified transaxillary-subclavian route for transfer to the neck was used in 8 patients, pectoralis major musculocutaneous flap was used in 7 patients, and free flaps were used in 12 patients for head and neck reconstructions. These 3 methods were compared regarding the flap dimensions, complications, flap outcome scores, hospitalization time, and cost of the treatment. Mean age of the patients, mean American Society of Anesthesiologists scores, mean dimensions of the flaps, and mean hospitalization time did not differ significantly among the 3 groups. Regarding the operation time, flap complications, outcomes, and cost of total treatment, although statistically not significant, PLDMC group offered the fastest reconstruction with highest flap outcome scores and minimum cost. Free-tissue transfer is the procedure of choice especially for functional reconstruction of head and neck region. Occasionally, there exist cases in whom a pedicled flap could offer a safer option. The PLDMC flap transferred via the transaxillary-subclavian route may be preferred than, with advantages including increased arc of rotation, safer pedicle location, shorter duration of the procedure, and reduced complication rates and costs.

Improved skin paddle survival in pectoralis major myocutaneous flap reconstruction of head and neck defects

OBJECTIVE

To examine our outcomes with skin paddle survival using pectoralis myocutaneous flaps in reconstruction of the head and neck. The pectoralis major myocutaneous flap has been associated with a notable incidence of distal skin necrosis and flap loss. Our experience has been favorable compared with that reported in the literature.

METHODS

Retrospective medical record review of 81 cases of pectoralis major muscle flap reconstruction performed in 78 patients from 1995 to 2008 using a flap harvest technique that is slightly different from the classic descriptions. Data were obtained regarding coexisting health conditions and perioperative complications, which were divided into major and minor categories. Major complications were defined as total flap failure or greater than 25% skin paddle loss. Minor complications and donor site complications included fistulas that were managed conservatively, wound dehiscence not requiring additional surgery, local infections, seromas, and hematomas.

RESULTS

Of the 81 flaps performed, 22 complications were encountered. Total flap loss was not encountered in any patient. The overall major complication rate in myocutaneous flaps was 3 of 76 (4%), with these cases consisting of significant skin paddle loss. Minor complications occurred in 14 of 81 myofascial and myocutaneous flaps (17%). Donor site complications of the chest wall occurred in 5 of 81 flaps (6%).

CONCLUSIONS

Skin paddle necrosis may be minimized with modifications of the classic technique. We believe that extension of the skin flap over the rectus sheath is the cause of distal skin flap necrosis. The pectoralis major myocutaneous flap remains a valuable reconstructive option in the head and neck.

The subclavicular versus the supraclavicular route for pectoralis major myocutaneous flap: a cadaveric anatomic study

The aim of this paper was to determine if the subclavicular route of rotation improved the pectoralis major myocutaneous flap's ability to reach head and neck sites in comparison to the traditional supraclavicular rotation. We dissected 50 flaps in 25 fresh adult male cadavers. The length of the pedicle and the flap's ability to reach five anatomical head and neck sites (laryngeal prominence of thyroid cartilage, mentum, angle of the mandible, external auditory canal, and orbit) were tested by supraclavicular and subclavicular rotation. Although the average length of the flap's pedicle was higher when the subclavicular rotation was employed, there was no statistical difference between the two techniques concerning the flap's ability to reach the studied sites. Our results suggest that the subclavicular route apparently adds little to the reconstruction of head and neck defects using the pectoralis major myocutaneous flap. We believe that the indication of this technique should be evaluated on a case-by-case basis before it is recommended to keep from unnecessarily increasing the potential morbidity of the reparative procedure.

Pectoralis major and other myofascial/myocutaneous flaps in head and neck cancer reconstruction: experience with 437 cases at a single institution

BACKGROUND

Pectoralis major and other myofascial/myocutaneous flaps have been recognized as important reconstructive methods in head and neck cancer surgery. Even with the worldwide use of free flaps, they are still the mainstay reconstructive procedures in many centers.

METHODS

We retrospectively analyzed the records of patients with head and neck cancer who underwent an immediate reconstruction with pectoralis major or other myofascial/myocutaneous flaps at a tertiary cancer center from 1982 to 1998.

RESULTS

A total of 437 patients were reviewed. Three hundred seventy-one patients underwent pectoralis major myocutaneous flaps; of these, 335 (90.3%) were men, with a median age of 56 years (range, 24-91 years). Tumors were located at the oral cavity and oropharynx in 246 patients (66.3%). Most tumors were at an advanced stage at presentation (T3-T4 in 60.9%). The flaps were used to cover mucosal defects in 280 patients (75.5%), skin defects in 62 patients (16.7%), and both in 29 patients (7.8%). In most patients, the flap was transferred to the head and neck region through a subclavicular tunnel. The overall complication rate was 36.1%, with 2.4% of cases involving total flap necrosis.

CONCLUSION

To date, this is the largest published series of patients who underwent reconstruction with a pectoralis major flap. Our results show that this flap remains an important reconstructive method, and it can be done with low risk and acceptable morbidity.

Pectoralis major musculocutaneous flap in oropharyngeal reconstruction: revisited

BACKGROUND

Free tissue transfer is now favored for head and neck reconstruction following cancer resection. Its success rate is rising with the obvious advances in microsurgery. The pectoralis major musculocutaneous flap, a former workhorse in head and neck reconstruction, has been overlooked and criticized because of its seemingly high rate of complications and cosmetic inferiority, but it is still being used by many surgeons and plays an important role in head and neck reconstruction.

METHODS

The authors reviewed 34 pectoralis major musculocutaneous flap cases and 18 free flap cases (12 radial forearm flaps, six rectus abdominis flaps) involving oropharyngeal reconstruction. Flap necrosis, fistula formation, and operative times were compared. The pectoralis major musculocutaneous flap was elevated in true island type with maximal skeletonization of the pectoral branch of the thoracoacromial vessels.

RESULTS

In pectoralis major musculocutaneous cases, all defects were reconstructed successfully, with only two cases of partial necrosis that were managed conservatively. Among the free flaps, two resulted in total flap loss and were subsequently replaced with pectoralis major musculocutaneous flaps. Fistula formation did not occur in any case in either group. Mean operative time for pectoralis major musculocutaneous flap preparation was 76 +/- 7 minutes; that for free flap preparation was 145 +/- 11 minutes.

CONCLUSIONS

Technical refinements and meticulous procedures minimized necrosis of the pectoralis major musculocutaneous flap and guaranteed the success of the reconstruction. The free flap is an excellent method for oropharyngeal reconstruction, but the refined pectoralis major musculocutaneous flap can also produce acceptable results with minimal complications. In some instances, the pectoralis major musculocutaneous flap is not only an alternative to the free flap but a better choice that presents less risk to the patient.

Der infraklavikuläre Durchzug des M.-pectoralis-major-Lappens

BACKGROUND

The pectoralis major myocutaneous flap (PMMF) is an important reconstructive tool for lesions in the head and neck region. Using the supraclavicular route, the PMMF reliably transfers large amounts of well-vascularized skin and muscle into defects of the upper aerodigestive tract. However, limited length and arc of rotation as well as excessive bulk can be problematic.

PATIENTS AND METHODS

In the current study, these problems have been addressed by passing the pedicle deeply to the clavicle. Following flap harvest, the pedicle was passed in the subclavicular plane in 15 head and neck cancer patients for primary and secondary reconstruction.

RESULTS

Using this route it was possible to increase the medium length of PMMF to 3 cm compared to the supraclavicular route. No total flap necrosis occurred, however, temporary complications were observed in three of 15 cases (20%)--partial flap necrosis occurred in two cases and fistula formation was observed in one case. This rate is in accordance with complication rates described for the supraclavicular route. However, in long-term follow-ups we observed a fracture of the clavicle in two patients in whom, in contrast to the others, the periostium was not only prepared posteriorly but over the whole circumference.

CONCLUSIONS

The subclavicular route for PMMF increases the length and arc of rotation available for reconstruction without compromising vascular supply to a higher degree than with the conventional supraclavicular route. Furthermore, this concept decreases the bulk of the PMMF pedicle which is functionally and cosmetically favourable. Thus, the subclavicular route of PMMF is safe and allows an extension of the reconstructive possibilities.

Risk factors for wound infection after oral cancer surgery

Wound infection is a common complication after oral cancer surgery and may result in significant functional morbidity, poor cosmetic results and prolonged hospitalization. The purpose of this study was to identify the most important factors contributing to operative wound infections in patients with oral and oropharyngeal cancer. A retrospective review of complications in 111 patients after oral and oropharynx cancer surgery with an immediate reconstruction is presented. Potential risk factors for infection were categorized based on the patient, the disease, and the treatment. Flap-related complications developed in 73 patients (65.76%). Wound infection occurred in 69 (62.12%), and a fistula in 10 patients (9%). Other complications developed in 41.44% of the patients. The analysis of risk factors for the development of infection showed the following factors to be significant: male sex, T and S tumour stages, reconstruction, tracheostomy, nasogastric tube or gastrostomy feeding and extent of surgery.

The Segmental Pectoralis Major Free Flap

BACKGROUND

The pectoralis major muscle may be suited for free transplantation of a segment of the muscle. We investigated the length and diameter of its vascular pedicle to determine its feasibility.

METHODS

The length of the pedicle, its arterial diameter, and its entry point into the muscle were determined in 17 cadaveric flaps.

RESULTS

The pedicle length up to the medial border of the pectoralis minor muscle averaged 6.6 cm. The mean external arterial diameter was 1.8 mm, and the venous diameter was consistently larger. The vascular pedicle consistently entered the muscle lateral to the midpoint of, and a mean of, 8.8 cm caudal to the clavicular line.

CONCLUSION

The vascular length and diameter are sufficient for microvascular anastomosis. Although an anatomic landmark for the cranial border of the flap could not be defined, the sternocostal part of the pectoralis major muscle may potentially be used as a segmental free flap.

The nerve supply to the clavicular part of the pectoralis major muscle: an anatomical study and clinical application of the function-preserving pectoralis major island flap

The purpose of this study was to investigate the nerve supply to the clavicular part of the pectoralis major muscle so that the innervation to this part can be maintained in the muscle-preserving pectoralis major island-flap transfer. Although methods have been described that include a limited portion of the muscle while leaving the upper parts undisturbed with an intact motor innervation, reports on anatomical studies of this nerve supply are brief. The distal distribution of the nerves, the spatial relationship to the main vascular pedicle, and the ways to preserve them during surgical procedures remain unclear. Surgically relevant features of the clavicular part of the pectoralis major muscle were studied by dissection. The nerve supply to this part was examined on 11 sides of eight formalin-fixed cadavers. Two fresh cadavers were used for dissection, intraarterial polymer injection, and application of a nerve-preserving surgical technique. In all subjects, a separate nerve innervated the clavicular and upper medial sternocostal portions of the pectoralis major muscle. This nerve arises craniomedial to the main vascular pedicle of the flap and divides into several branches. These branches run in a fascia on the deep surface of the pectoralis major muscle, superficial to the origin and distal course of the vascular pedicle. Most branches to the clavicular part end medial to the coracoid process. The course of the branches to the upper sternocostal part is more medial. Based on their anatomical findings, the authors propose a surgical technique for transfer of the pectoralis major island flap to the head and neck area through a tunnel in the deltopectoral groove, lateral to the origin of the vascular pedicle. Head and neck reconstruction was performed using this technique. The presented method is a muscle-preserving procedure that maintains maximal donor-site function and morphology.

Lateral upper arm free flap for primary reconstruction of pharyngeal defects in ablative oncological surgery. Report of six consecutive cases

Free microvascular flaps are an established method for soft tissue reconstruction following ablative oncological surgery in the head and neck. Functional reconstructions of the hypopharynx and the pharyngoesophageal segment (PES) are of particular relevance, as they are highly demanding surgical procedures. So far, the radial forearm free flap (RFFF) and the free jejunal transfer have been the transplants predominantly used for this purpose. The lateral upper arm free flap (LUFF) presents an alternative method for the fasciocutaneous tissue transfer. We report on our experience with the LUFF in a 56-year-old male patient with a pT3pN0M0 squamous cell carcinoma of the hypopharynx. A pharyngocutaneous fistula developed 5 days after pharyngolaryngectomy with bilateral neck dissection. The fistula was localized between the pharyngeal constrictor muscle and the esophagus and was closed with an LUFF from the left arm. Excellent flap adaptation to the remaining pharyngeal mucosa was observed. Although the length of the vascular pedicle and the diameter of the vessels in the LUFF are smaller than those in the RFFF, neither pedicle length nor vessel diameter proved to be a problem. The LUFF can be recommended as a well-vascularized, relatively safe and reliable flap for reconstruction of tubular structures such as the hypopharynx and the PES after tumor ablation and as an alternative to the RFFF. The flexibility of the LUFF allows surgeons to reconstruct the anatomy of the lost soft tissues as adequately as possible.

A new regenerative approach to oromandibular reconstruction after the resection of head and neck malignant tumor

We developed a new regenerative oromandibular reconstruction technique. In our technique, bone marrow was removed from surgically resected mandible, and then the mandible was heat-treated and prepared into a cortical bone tray. This tray was fixed on the defect area, iliac cancellous bone was grafted into its lumen, the entire circumference was covered with the muscle part of pectoral major myocutaneous flap, and the oral defect and the skin defect on the lower jaw were reconstructed with the skin paddles of the skin island of the flap. Two patients were treated with this technique after the removal of oral cavity cancer. The patients did not develop postoperative complications, the reconstructed mandible as well as the flap were completely taken, and normal shape of the mandible was regained. This technique would be one of the useful oromandibular reconstruction methods.

The pectoralis major myocutaneous flap: Is the subclavicular route safe?

BACKGROUND

The pectoralis major myocutaneous flap has a proven track record as a reconstructive tool, but excessive bulk and a limited arc of rotation can be problematic. Although this can be addressed by passing the pedicle deep to the clavicle, some authors consider that this modification may compromise the flap. This prospective study therefore sought to compare the supraclavicular and subclavicular routes with particular emphasis on potential vascular sequelae.

METHODS

One-hundred patients were randomly allocation into two groups. Following flap harvest, the pedicle was passed in either a supraclavicular or subclavicular plane depending upon allocation. The survival rate and complications of each flap were assessed at 1 month.

RESULTS

Total flap necrosis occurred in three (7.0%) of the subclavicular flaps and two (3.5%) of the supraclavicular flaps. This difference was not significant (p =.77). Likewise no statistical difference was noted between the rates of partial flap necrosis, fistula formation infection, or secondary hemorrhage in either group.

CONCLUSIONS

The subclavicular route addresses the problem of pectoralis major myocutaneous flap bulk and may increase the arc of rotation of the flap without significantly compromising its vascular supply.

Reliable, minimally invasive oromandibular reconstruction using metal plate rolled with pectoralis major myocutaneous flap

The purpose of this study was to minimize the surgical invasiveness to the donor site and the amount of the primary reconstruction time after oromandibular tumor resection. Oromandibular reconstruction was performed only using a pectoralis major myocutaneous flap and a metal plate. The pectoralis major myocutaneous flap was grafted to the oral cavity defect by rolling and wrapping around the metal plate with the muscle of the flap. No early postoperative complications have been noted in all seven patients. An average of 2 years and 1 month has past since surgery, and to date no infections, plate exposure, or plate breakage have been observed in any of the patients. The safety of the oromandibular reconstruction using a metal plate was improved by rolling the muscle of the pectoralis major myocutaneous flap around the metal plate. The present method was shown to be a rational technique that allowed primary reconstruction of the oral cavity and mandible in a minimally invasive manner in a short time.

Free fibula osteoseptocutaneous-pedicled pectoralis major myocutaneous flap combination in reconstruction of extensive composite mandibular defects

Lateral composite mandibular defects resulting from excision of advanced oral carcinoma often require mandible, intra-oral lining, external face, and soft-tissue bulk reconstruction. Ignorance of importance soft-tissue deficit in those patients may cause significant morbidity and functional loss. Such defects, therefore, can be reconstructed best with a double free flap technique. However, this procedure may not be feasible for every patient or surgeon. An alternative procedure is a free fibula osteoseptocutaneous flap combined with a pedicled pectoralis major myocutaneous flap. This combination was used in reconstruction of extensive composite mandibular defects in 14 patients with T3/T4 oral squamous cell carcinoma. All patients were men, and the average age was 54.3 years. The septocutaneous paddle of the fibula flap was used for the mucosal lining of the defects while the bony part established the rigid mandibular continuity. The pectoralis major flap then covered the external skin defect in the face and cheek, and the dead spaces left by the extirpated masticator muscles, buccal fat, and parotid gland. One free fibula flap failed totally, and one pectoralis major flap developed marginal necrosis. At the time of final evaluation, nine patients (64.3 percent) were alive, surviving an average of 25.7 months. All patients eventually regained their oral continence and an acceptable cosmetic appearance. In conclusion, the fibula osteoseptocutaneous flap plus regional myocutaneous flap choice is a successful and technically less demanding alternative to the double free flap procedures in reconstruction of extensive lateral mandibular defects.

A method that preserves circulation during preparation of the pectoralis major myocutaneous flap in head and neck reconstruction

The present article describes a method that preserves circulation during the preparation of the pectoralis major myocutaneous flap used in head and neck reconstruction. The major disadvantage of this flap is its poor circulation and consequent partial necrosis. To solve this problem, we analyzed the circulation and hemodynamics of the pectoralis major myocutaneous flap (the perforator of the anterior intercostal branch located about 1 to 2 cm medial to the areola in the fourth intercostal space is important), evaluated the safe donor sites in the chest wall for a skin island (the perforator is included on the skin island's central axis), improved the surgical procedure for elevating flaps (for preventing perforator injuries), and devised a means to transfer flaps, thereby increasing the range of the flaps (the transfer route is under the clavicle). Using this technique, head and neck reconstruction was performed on 62 patients. The diagnosis included oral cancer (21), oropharyngeal carcinoma (10), parotid carcinoma (10), hypopharyngeal carcinoma (9), and other head and neck malignant tumors (12). Of these, partial or marginal necrosis of the flap caused by circulatory problems was detected in three patients (5 percent). Using our method, the problems associated with inadequate circulation in the pectoralis major myocutaneous flap were greatly alleviated, thus reconfirming the usefulness of this flap in head and neck reconstruction.

Pectoralis major myofascial flap: a valuable tool in contemporary head and neck reconstruction

BACKGROUND

The pectoralis major myofascial (PMMF) unit is rapidly mobilized, reliable, and extremely useful in a number of clinical situations calling for vascularized soft-tissue coverage in the head and neck. Although free-tissue transfer has emerged as the preferred method of reconstruction for a large variety of defects in the head and neck, the pectoralis major muscle should be considered when vascularized soft-tissue coverage is required in this area.

METHODS

A retrospective chart review of 24 PMMF flaps performed at the University of Iowa Hospitals and Clinics between January 1, 1991, and May 1, 1996, was undertaken. Outcomes were evaluated relative to accomplishing the established preoperative surgical goals.

RESULTS

Utilization of the PMMF flap was grouped according to four primary indications: (1) protection of threatened great vessels or free flap vascular pedicles in situations of wound breakdown due to fistula or infection (7 cases); (2) vascularized soft-tissue coverage of great vessels or free-flap vascular pedicles and prevention of potential wound breakdown in surgical defects in which compromised healing was anticipated (7 cases); (3) closure of small pharyngeal defects (2 cases); or (4) vascularized coverage of the mandible following debridement for osteoradionecrosis (8 cases). The PMMF flap was 100% successful when the surgical goal was to protect exposed vascular structures and promote wound healing in the presence of fistula or infection. The PMMF flap was 100% successful in the protection of vascular structures and prevention of wound breakdown in cases where compromised wound healing was anticipated. The PMMF flap provided closure, and a vascularized surface for mucosalization, when used to primarily reconstruct small pharyngeal defects. The PMMF flap provided definitive closure in 5 of 8 (62.5%) cases of osteoradionecrosis of the mandible when it was used to invest the remaining mandibular bone. Three of 8 cases (37.5%) required further surgical management and were considered failures. An acceptable cosmetic outcome was obtained in women undergoing this procedure by using an inframammary incision. The preoperative goal of the PMMF flap procedure was met in 21 of 24 (87.5%) cases. There was a major complication rate of 12.5% as well as a minor complication rate of 12.5%.

CONCLUSION

In cases requiring the protection of vital vascular structures from infection, salivary secretions or skin flap breakdown, the PMMF flap should be considered. The PMMF flap is an excellent reconstructive option in selected clinical situations, where vascularized soft-tissue coverage is required in the head and neck.

The pectoralis major myocutaneous flap in oral and maxillofacial reconstruction: a retrospective analysis of 50 cases

PURPOSE

This article retrospectively reviews 50 consecutive pectoralis major flaps used in oral and maxillofacial reconstruction with respect to reliability and complications.

PATIENTS AND METHODS

Fifty patients had reconstruction of postcancer resection defects of the oral cavity and maxillofacial region. The age and sex of the patients and site of defect were analyzed. The design of the pectoralis major flap and complications encountered were documented.

RESULTS

There were three cases (6%) of flap failure and an additional three cases (6%) in which 40% or more of the skin paddle sloughed. Orocutaneous fistula was rare. The use of an osteomyocutaneous flap with a rib gave poor results for mandibular reconstruction.

CONCLUSION

The pectoralis major flap is reliable, and the complications seen in this series were comparable to other large series in the literature. Despite the increased use of microvascular flaps, the pectoralis major flap remains an excellent reconstructive choice for large soft tissue defects in the oral cavity.

Is the pectoralis myocutaneous flap in intraoral and oropharyngeal reconstruction outdated?

METHODS

Our experience with 224 immediate pectoralis major myocutaneous flap reconstructions in patients with carcinomas of the oral and oropharyngeal cavities is presented.

RESULTS

Although flap-related complications developed in 53% of the patients, all flaps survived, and we had no major skin paddle loss. The incidence of reoperation due to flap-related complications was 2%. All other complications were minor and did not affect the length of hospitalization. Analysis showed no significant risk factors for the development of complications. Because of fistula formation, infection, or metal exposure, plate removal was necessary in 10% of the AO fixation plates used in cases of mandibular swing. This occurred in 68% of the anterior and 22% of the lateral mandibular reconstructions performed with a reconstruction plate (P < 0.05).

CONCLUSIONS

We conclude that a reconstruction plate is unsatisfactory for anterior mandibular continuity reconstruction and debatable for lateral mandibular reconstruction. At present, anterior defects are reconstructed with free vascularized osteocutaneous flaps that should probably also be used for lateral mandibular reconstruction. Furthermore, in a large number of series, it is reported that free flaps also have high complication rates and 5-10% flap loss. As all pectoralis major flaps survived in our series, it still remains a good choice in intraoral and oropharyngeal reconstruction when there is no necessity to reconstruct bone.

Complications of the pectoralis major myocutaneous flap in the oral cavity: a prospective evaluation of 220 cases

A prospective study of 220 consecutive pectoralis major myocutaneous flaps used for oral cavity reconstruction from March of 1990 to February of 1991 showed that 89 patients (40.5 percent) developed flap-related complications and 33 patients (15 percent) had complications unrelated to the flap; 92 patients (42 percent) had an uneventful recovery and there were 6 (2.7 percent) postoperative deaths. Sixty patients (27 percent) developed flap necrosis, of whom only 6 (2.7 percent) had total flap loss. Major partial loss occurred in 20 patients (9 percent) and minor flap loss occurred in 34 (15.5 percent). Flap necrosis was significantly lower in the purely myocutaneous flaps (p < 0.00000) vis-à-vis the bipedicled and osteocutaneous flaps. Fistula formation, wound infection, dehiscence at the flap margin, and postoperative hematomas occurred with comparable frequency in both groups. The female gender, primary tongue cancer, subtotal or total glossectomy, bipedicling of flaps, prior chemotherapy, and presence of systemic disease (diabetes) emerged as significant risk factors for flap necrosis on multivariate analysis (p < 0.005).

The bilobed myocutaneous pectoralis major flap in closure of combined intra- and extraoral defects

Oral carcinomas may eventually invade the perioral soft tissues. In such cases, tumor resection creates through and through defects. Similar defects are seen in patients with gunshot wounds. The versatility of the bilobed myocutaneous pectoralis major flap in closure of these defects is emphasized. The results in nine patients treated by this method are discussed.

Comparison of the rectus abdominis free flap with the pectoralis major myocutaneous flap for reconstructions in the head and neck

The pectoralis major myocutaneous flap (PMMF) is often used in the reconstruction of large head and neck defects. Unfortunately, its use is associated with a high incidence of minor complications, can distort the contour of the neck, and may cause significant donor site deformity, especially in women. This study compared 30 patients with major head and neck cancer-related defects who underwent reconstruction with a rectus abdominis free flap (RAFF) with 39 patients with similar defects who underwent reconstruction with the PMMF. The complication rate found in the RAFF group (13%) was significantly lower than that found in the PMMF group (44%; p = 0.0145). Flap necrosis was found in 10% of the PMMF group, whereas none was found in the RAFF group. The aesthetic outcome was also better in patients who had reconstructions with the RAFF. We conclude that, for most major head and neck defects, reconstruction methods that utilize the RAFF and other free tissue transfer techniques are preferable when the requisite equipment and expertise are available.

The latissimus dorsi flap in head and neck reconstructive surgery: a review of 121 procedures

The results of a prospective study of 121 latissimus dorsi flaps performed during head and neck reconstructive surgery at the Royal Marsden Hospital are presented. Three-quarters of the flaps were pedicled and one-quarter were free. All the patients underwent surgery for malignant disease. The flap failure rate was 5%, other flap related complications occurred in 19% and the overall rate of complications was 26%. Previous radiotherapy, site of reconstruction, type of flap (free or pedicled) and age of the patient were not significant risk factors. Men were more likely to have a complication than women.

Introducing the 'walk-up' flap

Reconstructive oral and maxillofacial surgeons often find the need for additional soft tissue even when a myocutaneous flap has been previously placed. This article introduces the principles, technique, and results of 32 "walk-up" muscle flaps derived from existing myocutaneous flaps. The anastomotic vascular ingrowth at the original myocutaneous flap's distal end permits its proximal detachment and axial vessel ligation to rotate the proximal two thirds to a tissue-deficient site. In our experience at the University of Miami, these flaps have been predictable (97% viable transfer rate), have provided vascular soft tissue in deficient areas, and have been skin grafted at their surface to increase oral lining or skin cover, among several other uses.

An improved technique for development of the pectoralis major myocutaneous flap

The pectoralis major myocutaneous flap is the most commonly employed muscle skin transfer used in soft-tissue reconstruction of defects of the upper neck and jaw region. This article presents conceptual and technical changes in the development of the pectoralis major myocutaneous flap that preserve a greater vascular pedicle and enhance the flap's arc of rotation. Data from 54 consecutive cases using this modified approach show a reduction in complications, a greater range of use, and consistent healing in radiated and nonradiated tissues without requiring sectioning or removing the clavicle or causing significant chest deformities. These modifications have produced a more predictable transfer compared with other reported techniques.

Is skin necessary for intraoral reconstruction with myocutaneous flaps?

Intraoral defects may be reconstructed in many ways following cancer resection. Following the advent of the myocutaneous flap, this has been very much the mainstay in intraoral reconstructive surgery. Although it has proved to be a reliable flap it has certain innate disadvantages which can often be attributed to the skin component of the flap. This paper attempts to make a case for using muscle-only pedicle flaps such as pectoralis major, masseter transfer and latissmus dorsi flaps.

Complications of the pectoralis major myocutaneous flap in head and neck reconstruction

A retrospective review of the complications in 211 patients undergoing pectoralis major myocutaneous flap reconstruction is presented. The flap was used for mucosal lining of the oral cavity or oropharynx in 109 patients, for pharyngoesophageal reconstruction in 44, for skin coverage in 47, and for other locations in 14 patients. Flap-related complications developed in 63% of the patients. These included flap necrosis, suture line dehiscence, fistula formation, infection, and hematoma. Analysis of risk factors for the development of flap complications showed the following factors to be significant: age over 70; female gender; nomographic overweight; albumin less than 4 g/dL; use of the flap in reconstruction of the oral cavity after major glossectomy; and presence of other systemic diseases. The median length of hospitalization for those developing complications was 33 days compared with 16 days for those who did not develop any complications. Thirty-five (26%) of the 135 patients developing complications required reoperation and only 2 among these required a second flap. Similarly, only 13 of the 61 patients who developed fistulas required surgical closure.

Side-by-side double paddle pectoralis major flap for cheek defects

A method of using the pectoralis major flap with two horizontally opposed skin paddles for simultaneous reconstruction of both intra-oral mucosa and skin in full-thickness cheek defects is described.

Use of the lateral portion of the pectoralis major muscle to cover exposed axillary structures

The pectoralis major myocutaneous flap has been used to cover many different defects. This article will describe the use of the lateral portion of the pectoralis major muscle to cover exposed axillary structures when the latissimus dorsi muscle is not available for coverage.

Liposuction to debulk the pectoralis major myocutaneous flap

Pectoralis major myocutaneous flaps are very useful for head and neck reconstruction. However, excess bulk in these flaps due to subcutaneous fat can be a disadvantage in oral cavity, oropharyngeal, and cervical esophageal reconstruction. A variety of surgical modifications have been tried in an effort to overcome this problem. Liposuction was proposed by a member of this research group as a means to debulk such flaps. The purpose of this fresh cadaver study was to determine what effect this procedure might have on blood supply to the skin overlying the pectoralis major muscle. Gross and histologic observations suggest that liposuction would not significantly affect the vascular perfusion of these flaps. This report represents a preliminary study previous to a clinical trial using a potentially useful technique. It is hoped by the authors that this report will stimulate others to evaluate it's possible clinical utility.

The versatility of pectoralis major and latissimus dorsi myocutaneous flaps in the reconstruction of cancrum oris defects of children and adolescents

The application of the recently described myocutaneous flaps in 7 cases of cancrum oris defects is shown and the consistency of the blood supply in children is stressed. The surgical anatomy is mentioned and the use of the flaps in the reconstruction of defects of the cheek, angle of mouth, lips and chin is illustrated. The excellence of the muscle island flap in preventing reankylosis if interposed into new joints in the body of the mandible is emphasised, together with the advantages over the forehead and delto-pectoral flaps when used for the same purpose.

The use of free tissue transfer in reconstruction following head and neck tumour resection

Experience in the use of free vascularised tissue flaps in reconstruction following major head and neck resections for malignant disease has been described. The benefits of the use of free flaps are improved function and cosmesis with more rapid rehabilitation and reduced in-patient stay in a group of patients, many of whom had a limited life expectancy. The disadvantages of this technique are the need for special equipment and for medical and nursing staff trained and experienced in this type of work.