Free-flap reconstruction of large defects of the scalp and calvarium

Skull and Scalp En-Bloc Harvest Protects Calvarial Perfusion: A Cadaveric Study

BACKGROUND

 Calvarial defects are severe injuries that can result from a wide array of etiologies. Reconstructive modalities for these clinical challenges include autologous bone grafting or cranioplasty with biocompatible alloplastic materials. Unfortunately, both approaches are limited by factors such as donor site morbidly, tissue availability, and infection. Calvarial transplantation offers the potential opportunity to address skull defect form and functional needs by replacing "like-with-like" tissue but remains poorly investigated.

METHODS

 Three adult human cadavers underwent circumferential dissection and osteotomy to raise the entire scalp and skull en-bloc. The vascular pedicles of the scalp were assessed for patency and perfused with color dye, iohexol contrast agent for computed tomography (CT) angiography, and indocyanine green for SPY-Portable Handheld Imager assessment of perfusion to the skull.

RESULTS

 Gross changes were appreciated to the scalp with color dye, but not to bone. CT angiography and SPY-Portable Handheld Imager assessment confirmed perfusion from the vessels of the scalp to the skull beyond midline.

CONCLUSION

 Calvarial transplantation may be a technically viable option for skull defect reconstruction that requires vascularized composite tissues (bone and soft tissue) for optimal outcomes.

Skull and Scalp En-Bloc Harvest Protects Calvarial Perfusion: A Cadaveric Study

BACKGROUND

 Calvarial defects are severe injuries that can result from a wide array of etiologies. Reconstructive modalities for these clinical challenges include autologous bone grafting or cranioplasty with biocompatible alloplastic materials. Unfortunately, both approaches are limited by factors such as donor site morbidly, tissue availability, and infection. Calvarial transplantation offers the potential opportunity to address skull defect form and functional needs by replacing "like-with-like" tissue but remains poorly investigated.

METHODS

 Three adult human cadavers underwent circumferential dissection and osteotomy to raise the entire scalp and skull en-bloc. The vascular pedicles of the scalp were assessed for patency and perfused with color dye, iohexol contrast agent for computed tomography (CT) angiography, and indocyanine green for SPY-Portable Handheld Imager assessment of perfusion to the skull.

RESULTS

 Gross changes were appreciated to the scalp with color dye, but not to bone. CT angiography and SPY-Portable Handheld Imager assessment confirmed perfusion from the vessels of the scalp to the skull beyond midline.

DISCUSSION/CONCLUSION

 Calvarial transplantation may be a technically viable option for skull defect reconstruction that requires vascularized composite tissues (bone and soft tissue) for optimal outcomes.

Reconstruction of Scalp with Local Axial Flaps

The scalp is a unique part of the human body and various etiological factors, such as tumour extirpation, infection, burns, or trauma, can lead to scalp defects. Primary closure, skin grafting, local flaps, tissue expansion or free tissue transfer are modalities available for scalp reconstruction. In this article, the authors share their institutional experience using various local flaps concerning the size, location, depth of defect and the quality of surrounding tissue. From September 2017 to January 2020, 54 patients underwent scalp reconstruction with local flaps for a sizeable defect size of 5-150 cm2 in the Department of Plastic Surgery, SMS Medical College, Jaipur. Patients were identified by age, sex, cause of the scalp defect; the location, size, and depth of the defect; condition of surrounding tissue and the type of reconstruction done. The most common cause of scalp defect was excision of malignant tumour (50%). 30 patients had a large sized defect (40-90 cm2) and in 28 patients had 90-150 cm2 defects. Surgical reconstruction was done using local flaps, transposition flap was the most used in 36 patients (66.7%) followed by rotation advancement flap in 11 patients (20.4%). The recovery was relatively quick. Minor complications happened in 5 patients (9.3%) that were managed conservatively. In the present era of microsurgical reconstruction, local options as axial flaps provide a simpler and safer method of scalp reconstruction. A carefully planned scalp flap gives healthy, robust, hair-bearing tissue coverage and requires a shorter healing time for the patients.

Microsurgical Scalp Reconstruction: An Overview of the Contemporary Approach

BACKGROUND

 Microsurgical scalp reconstruction has evolved immensely in the last half-century. The core concepts of microsurgical scalp reconstruction have always been to transfer soft tissue of a sufficient quality to within the defect while minimizing donor site morbidity. Refinements in scalp reconstruction consist of both improvement in reducing donor site morbidity and enhancing recipient site contour and balance. Furthermore, technical advancements and the vast experience within our field have allowed for preoperative evaluation of recipient vessels that are more favorable in proximity to the scalp.

METHODS

 In this review, we aim to describe the contemporary approach to microsurgical scalp reconstruction. This is to include the indications of choosing free flaps as well as how to select the ideal flap based on patient-oriented factors. The need for cranioplasty, recipient vessel selection, operative technique, and reoperations is also reviewed. In addition, our considerations and the nuances within each category are also described.

SUMMARY

 Scalp reconstructions involve the fundamental tenants of plastic surgery and demand application of these principles to each case on an individual basis and a successful reconstruction must consider all aspects, with backup options at the ready. Two workhorse free flaps, the anterolateral thigh perforator and latissimus dorsi muscles flaps, serve a primary role in the contemporary approach to microsurgical scalp reconstruction.

CONCLUSION

 We hope this review can lay the foundation for which future plastic surgeons may continue to build and advance the approach to complex microsurgical scalp reconstruction.

Locally Advanced Scalp Tumors: Clinical and Survival Outcomes of a Tertiary Unit

INTRODUCTION

Locally advanced nonmelanoma skin cancers of the head and neck are well described in the current literature. However, data about clinical and survival outcomes are lacking. We present survival data from a tertiary head and neck cancer unit in London.

METHODS

A retrospective analysis of data collected from a single institution was conducted. All patients with locally advanced cutaneous scalp carcinomas invading the skull between 2011 and 2019 were included. Data included patient demographics, tumor, comorbidities, interventions, flap survival, and metal work exposure. Survival outcomes were examined using Kaplan-Meier analysis.

RESULTS

Twenty-three patients were identified. The mean age was 72 years. Eighteen patients were male, and 5 were female. Five patients were immunosuppressed. Nineteen patients underwent outer cortex drill-down/full-thickness calvarial resection, followed by reconstruction with free tissue transfer. Six patients had titanium mesh reconstruction after segmental skull resections. Three patients underwent further surgery because of exposed metalwork. Disease-free survival at 3 years after surgery was 60%.

CONCLUSIONS

Locally advanced nonmelanoma skin cancers invading the bone are sporadic. There are little published data on clinical and survival outcomes in this group. Despite the nature of these skin lesions, a high degree of local control can be obtained by extensive surgical resection, outer table drill-down, and calvarial resection. We conclude that aggressive management of the bony invasion improves disease-free survival and improves local control.

Custom surgical management of invasive malignant tumors of the scalp

BACKGROUND

There is no universal management protocol concerning invasive malignant tumors of the scalp with bone and dura mater invasion. The aims of this study were to report and discuss our experience in the management of these forms of tumors.

METHODS

We retrospectively reviewed all consecutive patients of microsurgical scalp reconstruction performed after resection of invasive cutaneous malignancies of the scalp, calvarium, and dura mater from 2017 to 2019, at Pitié-Salpêtrière University Hospital (Paris, France).

RESULTS

Five patients met inclusion criteria. There were three squamous cell carcinomas and two sarcomas. Mean age at surgery was 63.6 years. The sex ratio male/female was 4. Two received radiation prior to resection and two patients had a history of prior scalp tumor surgery. All the patients underwent craniectomy and the mean cranial defect size was 41 cm². Cranioplasty was performed in one patient. Soft tissue coverage was provided by free tissue transfer of latissimus dorsi muscle in all patients. In four patients, split thickness skin graft was performed in a second surgical stage few weeks later. There were no intraoperative complications and no complications into the donor site for the tissue transfer or the skin graft. Two patients had flap necrosis that healed after a new free flap of latissimus dorsi.

CONCLUSIONS

Wide resection with craniectomy and reconstruction with microvascular free tissue transfer provides safe and reliable treatment of recalcitrant invasive scalp skin cancers. The surgical management of these complex patients is a challenge that must be conducted by trained, experienced, and multidisciplinary teams.

Microvascular Replantation of Totally Avulsed Scalps: Failures and Successes

Total scalp avulsion is a rare but devastating injury currently without proven reconstructive techniques. While microsurgical anastomosis procedures have advanced and allowed for the replantation of digits and limbs, special anatomical considerations and risk of fatal blood loss add to the difficulty of replanting totally avulsed scalps. The authors present their replantation experience of 4 totally avulsed scalps between 2008 and 2017. Despite meticulous reconstructive techniques with proven success in limb and digit replantation, the first 3 cases failed due to various factors (i.e., thrombosis, venous congestion, reavulsion), and with experience, the fourth case was successful. Since total scalp avulsions are rare injuries, case reports are scarce, with only few publications commenting on failures which hold crucial information for surgeons to avoid pitfalls and optimize techniques. In this article, we highlight our experience with both successful and failed replantation of totally avulsed scalps, and offer recommendations and insight for optimization of this rare procedure.

Latissimus Dorsi-Myocutaneous Flap in the Repair of Titanium Mesh Exposure and Scalp Defect After Cranioplasty

Titanium mesh was widely used for cranium defect repair but associated with high complication rates. In this study, the authors describe a method using latissimus dorsi-myocutaneous flap in the repair of titanium mesh exposure and scalp defect after cranioplasty, and the plate retaining is also achieved. Fifteen patients from April 2012 to May 2016 underwent this procedure, the age ranged from 32 to 62 years and 47 years old on average, and all the patient had plate exposure combined with surgical site infection and variation of scalp defect. All the patients had fully flap survive, and follow up ranged from 6 months to 24 months, 1 patient had titanium mesh re-expose and received additional operation to remove the plate. The free latissimus dorsi musculocutaneous flap could supply large size of bulky tissue coverage with good blood supply and strong anti-infection ability. This method was an option for retaining the titanium mesh and repairing the exposure for the mild infection with small size scalp defect patient.

Is Three-Dimensional Virtual Planning in Cranial Reconstruction for Advanced Cutaneous Squamous Cell Carcinoma of the Skull a Feasible Option?

BACKGROUND

Cutaneous squamous cell carcinoma (cSCC) is a common type of malignant skin disorder. An uncommon feature is local bony invasion, as can rarely be seen in lesions on the scalp. The optimal treatment strategy in these rare cases is still under debate.

OBJECTIVE

The aim of this case report is to present a 1-stage three-dimensional planned surgical resection and reconstruction of a cSCC with bony invasion into the scalp and to discuss the alternative options and potential pitfalls.

MATERIALS AND METHODS

A patient diagnosed with rT4N0M0 cSCC of the scalp underwent a cranial resection and reconstruction in 1 stage. With the use of computer-assisted design and computer-assisted manufacturing a patient-specific implant (PSI) of poly (ether ether ketone) was manufactured. After the PSI was inserted, it was covered with a latissimus dorsi muscle and a split-thickness skin graft.

RESULTS

Intraoperatively the resection template generated an accurate resection and accurate and fast placement of the PSI. The reconstruction had a clinical satisfactory esthetic result, but was hampered by the development of a small wound dehiscence was observed over the postoperative course.

CONCLUSION

Three-dimensional planned resection and reconstruction for composite defects of the skull after resection of a cSCC of the scalp with bony invasion may lead to an accurate and predictable resection and accurate and fast placement of the PSI. However, patient specific characteristics should be considered to assess potential risks and benefits before opting for this one-stage treatment strategy.

Full-Thickness Skin Grafting for Local Defect Coverage Following Scalp Adjacent Tissue Transfer in the Setting of Cranioplasty

INTRODUCTION

Numerous techniques have been described to overcome scalp deficiency and high-tension closure at time of cranioplasty. However, there is an existing controversy, over when and if a free flap is needed during complex skull reconstruction (ie, cranioplasty). As such the authors present here our experience using full-thickness skin grafts (FTSGs) to cover local defects following scalp adjacent tissue transfer in the setting of cranioplasty.

METHODS

By way of an institutional review board-approved database, the authors identified patients treated over a 3-year period spanning January 2015 to December 2017, who underwent scalp reconstruction using the technique presented here. Patient demographics, clinical characteristics, technical details, outcomes, and long-term follow up were statistically analyzed for the purpose of this study.

RESULTS

Thirty-three patients, who underwent combined cranioplasty and scalp reconstruction using an FTSG for local donor site coverage, were identified. Twenty-five (75%) patients were considered to have "high complexity" scalp defects prior to reconstruction. Of them, 12 patients (36%) were large-sized and 20 (60%) medium-sized; 21 (64%) grafts were inset over vascularized muscle or pericranium while the remaining grafts were placed over bare calvarial bone. In total, the authors found 94% (31/33) success for all FTSGs in this cohort. Two of the skin grafts failed due to unsuccessful take. Owing to the high rate of success in this series, none of the patient's risk factors were found to correlate with graft failure. In addition, the success rate did not differ whether the graft was placed over bone verses over vascularized muscle/pericranium.

CONCLUSION

In contrary to previous studies that have reported inconsistent success with full-thickness skin grafting in this setting, the authors present a simple technique with consistent results-as compared to other more complex reconstructive methods-even in the setting of highly complex scalp reconstruction and simultaneous cranioplasty.

Scalp Reconstruction after Malignant Tumor Resection: An Analysis and Algorithm

Background  An oncologic tumor resection of the scalp can result in complex wounds that result in challenging scalp reconstructions. This study aimed to evaluate the outcomes of microvascular-based scalp reconstructions (MSR) in oncologic patients and to propose an algorithmic treatment approach. Methods  Within a 5-year period, 38 patients having undergone 41 MSR (15 anterolateral thigh (ALT), 15 gracilis muscle (GM), and 11 latissimus dorsi muscle (LDM) flaps) after extensive scalp tumor resections fulfilled inclusion criteria for this study. Results  Malignant skin disease included superficial and/or deep infiltration of the calvarium in 26 and combined intracranial infiltration in 12 patients. In case of bone replacement (24 patients), MSR was done concomitant, otherwise MSR was performed after pathological confirmation of tumor-free margins. LDM flaps were used in cases with defect sizes of 400 to 1250cm ² , whereas ALT- and GM flaps were chosen for defects ranging from 40 to 350cm ² . The average length of the pedicle was comparable in ALT- and LDM flaps and longer than in GM flaps. Total flap loss with need for revision surgery and minor donor site morbidity occurred in four and three patients, respectively. Conclusion  Microsurgical reconstruction of moderate-to-extensive scalp defects remains a reliable method with overall low risks and satisfactory aesthetic results, while, according to our experience, muscle flaps show the best functional and aesthetic results. However, in cases of central scalp defects and in situations when a long vascular pedicle of the flap is important, the ALT flap seems to be the best solution.

Complex Scalp and Calvarium Defects After Giant Basal Cell Carcinoma Excision: Management, Challanges, Outcomes

Giant basal cell carcinoma (GBCC) is defined as a tumor ≥5 cm in diameter. GBCC of scalp usually requires extended resection of soft tissues, calvarium, and dura. In this study, we present 5 patients with GBCC of head, who underwent a single-stage combined scalp, calvarium, and dural reconstruction. Herein, we aim to discuss reconstruction methods, cerebrospinal fluid (CSF) leakage, duration of hospital stay, and tumor recurrency. Peroperative and postoperative follow-ups, defect areas, and performed calvarium reconstruction methods of 5 patients, who underwent complex scalp and calvarium reconstruction after GBCC between year 2010 and 2017, were retrospectively maintained. We studied reconstruction methods, CSF leakage, duration of hospital stay, and tumor recurrency. All patients undergone single-stage reconstruction. Avarge duration of hospital stay was 15 days. Titanium mesh was used in 3 patients and methyl methacrylate was used in 2 patients for calvarium reconstruction. CSF leakage was seen in patients who underwent calvarium reconstruction with titanium mesh. Tumor recurrence occured next to calvarium in 1 patient who undergone calvarium reconstruction with methyl methacrylate. CSF leakage and duration of hospital stay may induce morbidity of this oncoplastic procedure. The fact of longer hospital stay of patients reconstructed with titanium mesh might be a new data presented in this study. These parameters can be related with the method of calvarium reconstruction.

Bioinspired Collagen Scaffolds in Cranial Bone Regeneration: From Bedside to Bench

Calvarial defects are common reconstructive dilemmas secondary to a variety of etiologies including traumatic brain injury, cerebrovascular disease, oncologic resection, and congenital anomalies. Reconstruction of the calvarium is generally undertaken for the purposes of cerebral protection, contour restoration for psychosocial well-being, and normalization of neurological dysfunction frequently found in patients with massive cranial defects. Current methods for reconstruction using autologous grafts, allogeneic grafts, or alloplastic materials have significant drawbacks that are unique to each material. The combination of wide medical relevance and the need for a better clinical solution render defects of the cranial skeleton an ideal target for development of regenerative strategies focused on calvarial bone. With the improved understanding of the instructive properties of tissue-specific extracellular matrices and the advent of precise nanoscale modulation in materials science, strategies in regenerative medicine have shifted in paradigm. Previously considered to be simple carriers of stem cells and growth factors, increasing evidence exists for differential materials directing lineage specific differentiation of progenitor cells and tissue regeneration. In this work, we review the clinical challenges for calvarial reconstruction, the anatomy and physiology of bone, and extracellular matrix-inspired, collagen-based materials that have been tested for in vivo cranial defect healing.

Treatment of Scalp Scars

The scalp presents many challenges to the reconstructive surgeon given its visible nature and the various considerations that must be given for optimal reconstruction. In this article, we review the anatomy of the scalp, the various options for reconstruction, and important considerations for improving the chances of optimal reconstruction of scalp defects.

Reconstructive Management of Devastating Electrical Injuries to the Face

BACKGROUND

Devastating fourth-degree electrical injuries to the face and head pose significant reconstructive challenges. To date, there have been few peer-reviewed articles in the literature that describe those reconstructive challenges. The authors present the largest case series to date that describes the management of these injuries, including the incorporation of face transplantation.

METHODS

A retrospective case series was conducted of patients with devastating electrical injuries to the face who were managed at two level-1 trauma centers between 2007 and 2011. Data describing patient injuries, initial management, and reconstructive procedures were collected.

RESULTS

Five patients with devastating electrical injuries to the face were reviewed. After initial stabilization and treatment of life-threatening injuries, all five underwent burn excision and microsurgical reconstruction using distant flaps. Two of the patients eventually underwent face transplantation. The authors describe differences in management between the two trauma centers, one of which had the availability for composite tissue allotransplantation; the other did not. Also described is how initial attempts at traditional reconstruction affected the eventual face transplantation.

CONCLUSIONS

The care of patients with complex electrical burns must be conducted in a multidisciplinary fashion. As with all other trauma, the initial priority should be management of the airway, breathing, and circulation. Additional considerations include cardiac arrhythmias and renal impairment attributable to myoglobinuria. Before embarking on aggressive reconstruction attempts, it is advisable to determine early whether the patient is a candidate for face transplantation in order to avoid antigen sensitization, loss of a reconstructive "lifeboat," surgical plane disruption, and sacrifice of potential recipient vessels.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, V.

Scalp reconstruction: an algorithmic approach and systematic review

IMPORTANCE

Reconstruction of the scalp after acquired defects remains a common challenge for the reconstructive surgeon, especially in a patient with a history of radiation to the area.

OBJECTIVE

To review the current literature and describe a novel algorithm to help guide the reconstructive surgeon in determining the optimal reconstruction from a cosmetic and functional standpoint. Pertinent surgical anatomy, considerations for patient and technique selection, reconstructive goals, as well as the reconstructive ladder, are also discussed.

EVIDENCE REVIEW

A PubMed and Medline search was performed of the entire English literature with respect to scalp reconstruction. Priority of review was given to those studies with higher-quality levels of evidence.

FINDINGS

Size, location, radiation history, and potential for hairline distortion are important factors in determining the ideal reconstruction. The tighter and looser areas of the scalp play a major role in the potential for primary or local flap closure. Patients with medium to large defects and a history of radiation will likely benefit from free tissue transfer.

CONCLUSIONS AND RELEVANCE

Ideal reconstruction of scalp defects relies on a comprehensive understanding of scalp anatomy, a full consideration of the armamentarium of surgical techniques, and a detailed appraisal of patient factors and expectations. The simplest reconstruction should be used whenever possible to provide the most functional and aesthetic scalp reconstruction, with the least amount of complexity.

LEVEL OF EVIDENCE

NA.

Lessons Learned in Scalp Reconstruction and Tailoring Free Tissue Transfer in the Elderly: A Case Series and Literature Review

This article aims to demonstrate an individualized approach to an elderly patient requiring scalp reconstruction, to describe the methodology in flap selection, lessons learned, and report outcomes. A retrospective review of a single surgeon's experience of scalp reconstruction (E. D. R.) using free tissue transfer from 2005 to 2011, in patients older than 70 years, was completed. A total of eight patients met the inclusion criteria, five males and three females, with a mean age of 80.4 years (range, 73-92). Free tissue transfer achieved 100% soft tissue coverage. Six of the eight patients required cranioplasty. The mean size calvarial defect was 92 cm(2) (range, 35-285 cm(2)). The mean flap size was 117.6 cm(2) (range, 42-285 cm(2)). Free flaps included three ulnar, three anterolateral thigh, one latissimus dorsi, and one thoracodorsal perforator flap. The mean follow-up time was 18.4 months (range, 3-46 months). Donor site morbidity was minimal. Mortality was 0%. Immediate flap failure was 0%. Other complications occurred in six of the eight patients. Mean revisionary procedures were 1.25 procedures per patient. It was concluded that chronological age does not increase mortality or catastrophic flap complications; however, morbidity is increased in the elderly and revisionary surgery is likely.

Autologous immediate cranioplasty with vascularized bone in high-risk composite cranial defects

BACKGROUND

Composite cranial defects in the setting of infection, irradiation, or cerebrospinal fluid leak present a significant risk for devastating neurologic sequelae. Such defects require soft-tissue coverage and skeletal reconstruction that can withstand the hostile environment of a precarious wound.

METHODS

Patients with high-risk composite cranial defects treated with free flap reconstruction containing a vascularized osseous component from 2003 to 2012 were reviewed retrospectively.

RESULTS

Fourteen patients received autologous vascularized cranioplasties between 2003 and 2012 with a mean age of 55.7 years and a mean follow-up of 14.1 months. Preoperatively, all patients had infection, irradiation, cerebrospinal fluid leak, or a combination thereof. Thirteen patients (92.9 percent) were reoperative cases for recurrent tumor, infection, or both. Six patients (42.9 percent) failed previous reconstructive procedures. Tissue biopsy-proven infection was present in 10 patients (71.4 percent) with calvarial osteomyelitis, both osteomyelitis and meningitis, or scalp soft-tissue infection only. Nine patients (64.3 percent) suffered from malignancy and six of these patients were irradiated preoperatively. Cranioplasty was achieved as part of a chimeric free flap using rib, scapula, both rib and scapula, or ilium. Vascularized duraplasty using serratus anterior fascia as a component of the chimeric flap was performed in three patients. No flap losses occurred and all patients had resolution of infection.

CONCLUSIONS

Soft-tissue and skeletal restoration are the two critical components of composite cranial reconstruction. The authors report outcomes of the largest series of one-stage immediate cranioplasty consisting of autologous soft tissue and vascularized bone in high-risk composite cranial wounds and suggest its application in defects associated with compromised wound beds.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, IV.

Bilateral latissimus dorsi flaps for the reconstruction of extensive scalp defects

BACKGROUND

The reconstruction of large scalp defects is occasionally required. Several methods of scalp reconstruction have previously been described. This paper presents the authors' experience with two patients in whom traditional methods were not sufficient and in whom bilateral latissimus dorsi free flaps were required.

OBJECTIVES

To evaluate the effectiveness of a new technique in reconstructing extensive scalp defects.

METHODS

Two case histories are presented. These include the rationale for the choice of reconstruction used as well as a discussion on the technical features of the surgery.

RESULTS

Reconstruction was effective in both cases. However, one patient died in the early postoperative period from a pulmonary embolus.

CONCLUSIONS

Bilateral latissimus flaps can be safely and effectively used in closing massive scalp defects in selected cases.

Psycho-oncological aspect of surgery in palliative care: our satisfactory experience using a V-Y island flap

CONCLUSIONS

Our reconstruction method using a V-Y island flap was minimally invasive and yielded a satisfactory esthetic result without impairing the patient's postoperative quality of life (QOL).

OBJECTIVE

Malignant skin tumors of the head and neck often affect the patient's appearance and QOL. Therefore, surgery for terminally staged patients with malignant skin tumors may be a treatment of choice for surgeons in a palliative care team to improve and sustain the patient's QOL.

METHODS

We describe our experience of surgical treatment of a large primary malignant skin tumor in the head performed as part of palliative care in a 38-year-old woman in the terminal stage. We developed a V-Y island flap that did not result in postoperative alopecia.

RESULTS

After surgery, the patient did not have alopecia and her hair hid the scar. The patient and her family were greatly satisfied with the result. Although the surgery did not extend her life, it alleviated her depressed condition caused by the uncomfortable primary tumor.

[Coverage of post-traumatic brain exposure by a total temporal flap: a case report]

Major defect of the scalp associated with penetrating brain injury is one of the most challenging issues in acute craniofacial trauma. Depressed skull fractures associated with injuries of the skin and periosteal tissue can be easily covered using various locoregional scalp flap techniques. However, if the skin is damaged around the wound, the surgical possibilities are reduced, allowing only local transposition flap or free flap coverage with many disadvantages for the latter such as vascular micro-anastomosis issues, unsuitable underlying vascular status, and a "patch" effect which is often unsightly. The authors describe, using a clinical case, the steps to provide a total temporal flap to cover a defect of both skin and bone. This can be performed in three separated stages: the first is the empowerment of both middle temporal pedicles; the second stage, 15 days later, is the section, transposition and coverage of the wound; the third stage, 30 days later, is the flap separation.

Complex wound-healing problems in neurosurgical patients: risk factors, grading and treatment strategy

BACKGROUND

Wound-healing problems in the neurosurgical patient can be particularly bothersome, owing to various specific risk factors involved. These may vary from simple wound dehiscence to complex multi-layer defects with cerebrospinal fluid (CSF) leakage and contamination. The latter is quite rare in practice and requires an individually titrated reconstruction strategy. The objective is to retrospectively analyze neurosurgical patients with complex, recalcitrant wound-healing problems we had treated in our department, attempt to develop a grading system based on the risk factors specific to our specialty and adapt a surgical reconstruction algorithm.

METHODS

During an 11-year period, 49 patients were identified to have had complex, recalcitrant wound-healing problems involving the cranial vault (n = 43) and the skull base (n = 6) that required an adapted surgical wound-management strategy. The etiologies of wound healing problems were aftermaths of surgical treatment of: (1) brain tumors (nine cases), (2) aneurysm clipping (ten cases), (3) trauma (27 patients), and (4) congenital malformations (three patients). Local rotational advancement flaps were performed in 18 patients and free microvascular tissue transfer was performed in 37 cases.

RESULTS

Major risk factors leading to recalcitrant wound healing problems in the presented group were: prolonged angiographic interventions (20%), ongoing chemotherapy or radiotherapy (47%), prolonged cortisone application (51%), CSF leak (76%) and, above all, multiple failed attempts at wound closure (94%). Stable long-term wound healing was achieved in all patients using vascularized tissue coverage. A ternary grading system was developed based on various risk factors in the presented cohort. Accordingly, the algorithm for reconstruction in neurosurgical patients was adapted.

CONCLUSIONS

Primary disease, treatment history, and distorted anatomical structures are major concerns in the management of complex wound-healing problems in neurosurgical patients. The higher the risk factors involved, the more complex is the surgical strategy. Free microvascular tissue transfer offers stable long-term results in recalcitrant cases. However, this may be indicated only in patients with a good prognosis of the underlying disease.

Titanium mesh reconstruction to maintain scalp contour after temporalis musculofascial flap reconstruction of the floor of the middle cranial fossa: a technical note and report of two cases

OBJECTIVE

Temporalis musculofascial rotational flaps can provide excellent tissue for reconstruction of defects in the floor of the middle cranial fossa. This technique can, however, result in cosmetic deformity of the temporal fossa with an asymmetric contour of the head. We report a technique that uses titanium mesh and autologous abdominal adipose to maintain a normal scalp contour.

CLINICAL PRESENTATION

Two patients, one with a large middle cranial fossa and infratemporal schwannoma, and another with penetrating trauma secondary to a rifle accident, required surgical repair of defects of the floor of the middle cranial fossa.

INTERVENTION

The repair was achieved in both cases using a temporalis musculofascial rotational flap. Normal contour of the scalp was maintained with titanium mesh and autologous abdominal adipose reconstruction.

CONCLUSION

The temporalis musculofascial flap, combined with titanium mesh and autologous adipose reconstruction, provided excellent closure of defects of the floor of the middle cranial fossa while preserving normal cosmetic scalp contour.

Management of postneurosurgical bone flap loss caused by infection

LEARNING OBJECTIVES

After studying this article, the participant should: 1. Be able to define indications and timing for secondary cranioplasty. 2. Understand the surgical options for reconstructing the cranium and overlying soft-tissue defect including their advantages and disadvantages. 3. Be able to apply this knowledge to the clinical setting of an infectious bone flap loss.

BACKGROUND

Infection after craniotomy occurs in approximately 1.1 to 8.1 percent of cases and often necessitates bone flap removal. For a secondary cranioplasty, there is an increased risk of recurrent infection, which influences the reconstructive plan. The soft tissue/scalp is frequently compromised by infection, sequelae of prior surgery, and/or adjuvant radiation therapy.

METHODS

A literature review was conducted to compile and summarize the indications for secondary cranioplasty after infectious bone flap loss, the timing of the procedure, and the surgical options for bone and soft-tissue reconstruction. In coordination with soft-tissue coverage, cranioplasty options include alloplastic reconstruction, allogeneic or autogenous bone grafts, and free tissue transfer.

RESULTS

The literature review identified the following factors that must be considered in the treatment plan for secondary cranioplasty after postneurosurgical bone flap loss: indications, timing of reconstruction, soft-tissue status and the need for soft-tissue reconstruction, and method of cranioplasty.

CONCLUSIONS

Treatment recommendations for cranioplasty in the clinical setting of infectious postneurosurgical bone flap loss are presented. These guidelines consider the risk factors for a recurrent infection, the condition of the soft-tissue coverage, and the concavity of the preoperative cranial deformity.

Scalp and calvarial reconstruction

Over the past several decades, an improved understanding of the blood supply of local flaps, increased experience with tissue expansion, and the development of techniques for microsurgical transfer of distant flaps have greatly contributed to the ability of plastic surgeons to repair scalp defects. This article will review basic anatomy, principles, and pearls of reconstruction for simple to complex scalp defects. Included will be anatomic considerations, indications and contraindications for reconstruction, and an overview of reconstructive options.

Lambeaux locaux pour pertes de substance transfixiantes du scalp sur tumeurs évoluées. À propos d'une série de 21 patients

SUBJECT

The advanced tumors of the scalp can involve the calvarium, the dura and the cerebral tissue. The medium sized full thickness scalp defects secondary to the excision of such cutaneous malignancy can be successfully treated with local flaps coming from the remaining scalp if these flaps are large and including at least one major pedicle of the scalp. The cranioplasty can be done immediately or secondarily.

PATIENTS AND METHODS

From May 2001 to July 2006, 21 patients aged between 52 and 78 years old, suffering from advanced basal and squamous cell carcinomas with invasion of the calvarium in all cases, the dura in 1 case and the cerebral tissue in 2 cases have benefited from an excision of the scalp and calvarium with a margin between 1 and 3 cm. The secondary defects measured between 9 and 15 cm for the scalp and between 6 and 9 cm for the calvarium. In 1 case, the dura was resected and reconstructed with a fascia lata graft. The flaps used were: a single pedicled transposition flap based on one or two occipital pedicles in 10 cases--a bipedicled transposition flap based on the superficial temporal pedicles in 3 cases and on the frontal and occipital pedicles in 4 cases--a large rotation flap in 4 cases. These flaps were undermined under the galea without any galeotomies. Their donor sites were immediately grafted. The calvarium was reconstructed by a methylmetacrylate implant in 9 cases, simultaneously with these flaps in 4 cases and secondarily in 5 cases.

RESULTS

There were no vascular problems in all these flaps--3 cases of infection in the simultaneous reconstruction of the scalp and calvarium are reported. The two patients with cerebral invasion are deceased 1 year after the surgery. The other patients are still alive without any recurrence or metastasis with a mean follow-up of 36 months.

CONCLUSION

Such complex defects of the tumoral scalp can be reconstructed with large and axial local flaps of the remaining scalp with safety. The cranioplasty has to be delayed.

Microsurgical scalp and skull reconstruction using a combined flap composed of serratus anterior myo-osseous flap and latissimus dorsi myocutaneous flap

A combined microvascular flap composed of serratus anterior myo-osseous and a latissimus dorsi myocutaneous flap has been performed for resurfacing massive scalp and skull defects, accompanied by chronic infection and heavy radiation damage. The authors present a case report where the combined procedure allowed a single-stage reconstruction of this complex defect.

Hair-Bearing Scalp Reconstruction Using a Dermal Regeneration Template and Micrograft Hair Transplantation

The scalp has traditionally presented a challenge to the reconstructive surgeon. Although a variety of techniques exists for providing stable coverage to the cranium that has become exposed secondary to trauma, infection, or surgical ablation, these techniques tend to require multiple operations and a significant time commitment on the part of the patient and the surgeon. Unfortunately, most if not all of these techniques are unable to recreate the appearance of natural-appearing hair on the reconstructed scalp. We present our unique experience utilizing a tissue-engineered dermal regeneration template for reconstruction of the traumatized scalp. Once vascularized and skin grafted, the neodermis received approximately 1600 microfollicular hair grafts, which resulted in a pleasing esthetic outcome. In this case, a 50-year-old man suffered a significant degloving of the posterior portion of the scalp. The area of exposed periosteum/galea was covered acutely with Integra dermal regeneration template, followed by skin grafting 2 weeks later. Since the patient refused tissue expansion reconstruction, a trial of hair micrografting (100 grafts) into the Integra was performed, with good results. Two subsequent sessions of 800 grafts placed also had good results. This report represents the first use of sequential hair micrografting into Integra dermal regeneration template to reconstruct hair-bearing scalp. Application of a dermal regeneration template with a thin split-thickness skin graft followed by sequential hair micrografting is a viable alternative for hair-bearing scalp reconstruction in cases where traditional methods (eg, tissue expansion, microvascular free tissue transfer) are unavailable or undesirable.

Free Flap Reconstruction of the Scalp and Calvaria of Major Neurosurgical Resections in Cancer Patients: Lessons Learned Closing Large, Difficult Wounds of the Dura and Skull

BACKGROUND

Reconstruction of major neurosurgical resections can present a significant challenge because of the morbidity of radiation therapy, cerebrospinal fluid leaks, bacterial contamination from sinus exposure, and functional and cosmetic deformity from the size and location of the defect. The authors present their experience with free tissue reconstruction of scalp and calvarial defects. In particular, the authors examine their results in relation to major comorbidities, such as preoperative cerebrospinal fluid leak, history of smoking, and perioperative radiation therapy.

METHODS

From 1997 to 2004, 22 patients requiring neurosurgical or head and neck resection for cancer from a single institution who underwent reconstruction with 24 flaps were examined retrospectively. Factors examined included patient demographics, indication for surgery, type of flap used, exposed critical structures, comorbidity, complications, and outcomes.

RESULTS

Of the 22 patients, seven had a cerebrospinal fluid leak present at the time of their reconstructive surgery. Of the seven, one patient died as a result of a stroke postoperatively. Of the remaining six patients, two had partial flap necrosis (33 percent). However, all six flaps survived, with resolution of cerebrospinal fluid leak. In comparison, of the 15 patients (17 flaps) without a cerebrospinal fluid leak, three had partial flap necrosis (18 percent; not significant). With regard to smoking status, the partial flap necrosis rate was 30 percent in smokers versus a rate of 14 percent in nonsmokers, although this was not statistically significant. Only one patient who received perioperative radiation (11 of 22 patients) developed partial flap necrosis.

CONCLUSIONS

The authors' data support the concept that free tissue transfer is a viable option in reconstruction of cranial defects. Although complications can occur in this high-risk population, successful reconstruction with free flaps was possible. Difficult problems, such as recurrent cerebrospinal fluid leaks and large irradiated wounds, can be managed and resolved successfully using this technique.

Reconstruction of acquired scalp defects: an algorithmic approach

LEARNING OBJECTIVES

After studying this article, the participant should: 1. Understand scalp anatomy, hair physiology, and skin viscoelastic properties as they relate to scalp reconstruction. 2. Understand the principles that allow for aesthetic reconstruction of scalp defects. 3. Understand the use of local tissue rearrangement for reconstruction of specific areas of the scalp. 4. Understand the use of tissue expansion and free tissue transfer for scalp reconstruction.

BACKGROUND

Reconstruction of scalp defects is required for acute trauma, tumor extirpation, radiation necrosis, and the repair of traumatic alopecia or cosmetically displeasing scars.

METHODS

The proper choice of a reconstructive technique is affected by several factors-the size and location of the defect, the presence or absence of periosteum, the quality of surrounding scalp tissue, the presence or absence of hair, location of the hairline, and patient comorbidities. Successful reconstruction of these defects requires a detailed knowledge of scalp anatomy, hair physiology, skin biomechanics, and the variety of possible local tissue rearrangements. In nearly total defects, local tissues may be inadequate and tissue expansion or free tissue transfer may be the only alternatives.

RESULTS

Plastic surgeons are now able to obtain coverage over the calvaria after the most devastating of defects; however, the challenge to the reconstructive surgeon today is to do so with excellent cosmetic results. Cosmetic scalp reconstruction requires restoration and preservation of normal hair patterns and hair lines.

CONCLUSIONS

Successful reconstruction of the scalp requires careful preoperative planning and precise intraoperative execution. Detailed knowledge of scalp anatomy, skin biomechanics, hair physiology, and the variety of available local tissue rearrangements allows for excellent aesthetic reconstruction.

Coverage of scalp defects following contact electrical burns to the head: a clinical series

Fifteen patients with various scalp defects resulting from contact electrical burns to the head, were reconstructed between the periods of January 1989 and October 2004 in our burns unit. The incidence of scalp burns in our patient population was 2.99% for electrical injuries and 0.95% for all burns during the study period. We present here a clinical series of fifteen patients with large, complex scalp defects following contact electrical burns to the head treated successfully by the application of local and free flaps. In this series, four free flaps, one pedicled flap and 10 local flaps were used for the reconstructions with no major postoperative complications seen. The average size of the defect was 89.45 cm2 for cases in whom local flaps were applied, 193 cm2 for free flaps and 143 cm2 for one case treated with distant flap. Four cases required craniectomies because of the delay in reporting to our burns unit. Early surgical attempt to cover the defect with a well-vascularized tissue provides excellent healing, osteogenesis, short hospital staying, low rate of infection and requires no surgical debridement of the bone in the early phase.

Scalp and Forehead Reconstruction

The reconstruction of defects that involve the scalp and forehead presents unique aesthetic and functional challenges. This article reviews the surgical anatomy of these regions and presents an algorithm for decision making in reconstructive surgery. Nonmicrosurgical techniques are briefly reviewed. The microsurgical reconstruction of scalp and forehead defects differs from the more common oropharyngeal reconstructions in several ways, including flap choices, choices for recipient vessels, and the opportunity to use conventional and microsurgical techniques simultaneously to improve outcomes. Each of these considerations is reviewed and the authors' preferred techniques presented.

Long-Term Superiority of Composite Versus Muscle-Only Free Flaps for Skull Coverage

Long-term follow-up of free flaps used for skull coverage in this experience has revealed that serious sequela are more likely after muscle-only free flaps. Over the past 2 decades, 8 muscle and 6 composite free flaps have been used in 12 patients. Debulking was the only secondary procedure necessary in 1 composite flap. However, implant extrusion through 1 muscle flap and chronic ulcerations after minor trauma in 2 other muscle flaps could be directly attributed to the thinness of these flaps. Whether these problems were a consequence of inevitable muscle atrophy or improper selection of too thin a muscle flap from the outset is unknown. Thus, it must be suggested that either a composite flap or a known thick muscle should be chosen initially if a permanent trouble-free outcome is to be expected.

Scalp and Forehead Reconstruction Using Free Revascularized Tissue Transfer

OBJECTIVE

To examine the indications for, and the success of, free flap reconstruction in patients with forehead and scalp defects.

DESIGN

Case series.

SETTING

Two tertiary referral university teaching hospitals. Patients Twenty-six consecutive patients, aged 31 to 85 years, presenting with 26 scalp defects, 5 forehead defects, and 1 combined defect (size, 70-672 cm(2)). Three patients required resection and repair of the dura at surgery. Intervention Patients were staged according to the size of the defect and the viability of surrounding tissue; free flap reconstruction was performed where indicated.

MAIN OUTCOME MEASURES

Flap survival, complications, and disease-free and overall survival.

RESULTS

Thirty-four free flap reconstructions were performed (24 latissimus dorsi free flaps, 4 scapular free flaps, 3 rectus abdominis free flaps, and 3 radial forearm free flaps). One failed 2 weeks postoperatively, and 2 required exploration (1 for arterial ischemia and 1 for a hematoma). There were 3 cases of donor site morbidity (2 early seromas and 1 late abdominal hernia). One patient died of a pulmonary embolus 1 week postoperatively. Disease-free survival was 48% at 5 years and overall survival was 59% at 5 years, with a median follow-up of 24 months.

CONCLUSIONS

Free revascularized tissue transfer is a reliable and safe way of reconstructing large scalp or forehead defects after traumatic injury or neoplastic resection. The muscle-only latissimus dorsi free flap for scalp reconstruction and the cutaneous scapular free flap for the forehead have proved successful in selected patients with a low complication rate and satisfactory cosmesis.

Reconstruction of Complex Scalp Defects

OBJECTIVE

To demonstrate the use of multiple, large, local flaps in the reconstruction of large scalp defects.

METHODS

A retrospective review of 4 cases in which the "banana peel" method of scalp reconstruction, originally described by Orticochea, was used as a method for closure of moderately large to extensive scalp defects.

RESULTS

In all 4 cases, closure of the scalp defects was accomplished. Major morbidity included hair-bearing skin in the forehead in 1 patient, an inconsequential small flap dehiscence requiring closure in the same patient, and a partial loss of a small skin graft to a donor site defect in 1 patient.

CONCLUSIONS

While other techniques may be optimal for the management of most scalp defects, such as 1- to 2-flap rotation-advancement flaps in small to moderate-size defects and microvascular free tissue transfer and secondary tissue expansion for larger defects, we conclude that the multiple-flap reconstruction method as described by Orticochea may be useful in a small subset of patients. The latter includes older, severely debilitated patients who would be optimally treated with microvascular tissue transfer but cannot tolerate lengthy general anesthesia and young patients who will not accept a significant area of alopecia that might exist with other techniques, such as secondary intention, skin grafts, or free flaps.