Colgajo axial de fascia temporoparietal (TPFF) para cobertura de dispositivo de estimulación cerebral profunda. Reporte de caso / Axial temporoparietal fascia flap (TPFF) for deep brain stimulation device coverage. Case report

Presentamos el caso de una paciente con enfermedad de Parkinson y extrusión del fijador craneal del electrodo de estimulación cerebral profunda. Luego del explante de todo el sistema, se realizó un colgajo axial de fascia temporoparietal (TPFF) para cobertura del trépano residual y en el segundo tiempo se utilizó el colgajo para cubrir el nuevo implante. La paciente no presentó complicaciones durante el seguimiento de 2 años

We present the case of a patient with Parkinson's disease and extrusion of the cranial fixation of the deep brain stimulation electrode. After explantation of the entire system, an axial flap of temporoparietal fascia (TPFF) was performed to cover the residual Burr hole, and in the second procedure, the flap was used to cover the new implant. The patient did not experience any complications during the 2-year follow-up period.

Cultured Skin Autograft in Subtotal Pediatric Scalp Avulsion.

ABSTRACT: Pediatric scalp avulsions represent a reconstructive challenge because of the unique features of scalp tissue. When microsurgical reimplantation is not feasible, alternative approaches such as skin grafting, free flap transfer with latissimus flap, or tissue expansion are considered. Generally, there is no consensus regarding management of this trauma, and, oftentimes, multiple reconstructive techniques may be needed for definitive coverage. This case study describes the reconstruction of a pediatric subtotal scalp avulsion using a dermal regeneration template and novel autologous homologous skin construct. This case was complicated by the absence of original tissue for reimplantation, excessive size of the defect relative to body habitus, and family concerns for future hair-bearing function. The reconstruction successfully provided definitive coverage and significantly reduced the size of the donor site and associated compilations. However, the hair-bearing potential of the tissue has yet to be determined.

The fetal scalp electrode shortage is an urgent patient safety issue.

There is currently a shortage of fetal scalp electrodes because of a recent recall due to concerns about the breakage of the electrode tip with possible injury to the neonate. Although the recall is presumably intended to improve safety, the resulting shortage of fetal scalp electrodes poses risks to patients because of inadequate fetal heart rate monitoring in cases where an adequate signal cannot be obtained with external fetal monitoring and/or when maternal heart rate artifact cannot be resolved by repositioning of transducers and application of a maternal pulse oximeter.

The Efficacy of Anterior Capsulotomy and Basal Capsulectomy Adherent to Expanded Scalp Flap During Alopecia Reconstruction in Pediatric Burned Patients.

BACKGROUND: Scalp expansion is an optimal treatment for alopecia resulting from burn injuries, especially in the pediatric population through providing highly vascularized adjacent local tissues with optimal hair density, color matching, texture, and hair-bearing characteristics. The aim of this study was to evaluate the efficacy of anterior capsulotomy and basal capsulectomy adherent to expanded scalp flap during alopecia reconstruction with scalp expansion in pediatric burned patients. METHODS: The study was conducted on 127 patients with an age range of 5 to 19 years who presented with postburn alopecia accompanied by hairline loss. The patients were divided into 2 groups: group I consisted of 58 patients who were operated on using conventional technique, and group II consisted of 69 patients who were operated using modified technique including basal capsulectomy on the skull side and anterior capsulotomy on the expanded scalp flap. RESULTS: The Hairdex, a validated questionnaire of Hair-Specific Health-Related Quality of Life measures, showed that percentage of satisfaction concerning outcomes was 91.50%, psychological well-being was 95%, and self-confidence was 84.30% in group II, compared with 63%, 55.70%, and 66.20%, respectively, in group I. This significant values had a great positive effect on patient satisfaction, changing child's behavior and self-confidence. CONCLUSION: Although physiological background of tissue expansion is the same, proper flap design with anterior capsulotomy on flap undersurface and basal capsulectomy on the skull side improve results of the traditional method significantly and minimize the complication rate. These surgical modifications provide maximum benefits from expanded tissue, with restoration of the hairline and a uniform hair direction. LEVEL OF EVIDENCE: Level III, case-control study.

Comparing the hair apposition technique with traditional closure in scalp lacerations: a literature review.

This literature review aimed to explore the clinical outcomes for adult and child patients with scalp lacerations using the hair apposition technique (HAT) compared with the traditional options of sutures and staples for wound closure in the emergency department (ED). Although the research is scant, in the studies examined HAT was received positively by patients, had limited complications, was cost-effective and was suitable for use in the age ranges that met the criteria for its application. Further research is required to support the existing evidence, but the use of HAT for low-risk scalp lacerations in the ED should be considered and is within the scope of all healthcare professionals who undertake appropriate practice of this clinical skill.

Staggered Setting of Latissimus Dorsi and Serratus Anterior Flaps for the Treatment of Scalp Avulsions: A Retrospective Study.

Although the incidence of scalp avulsion has decreased in recent years, it remains a major concern among plastic surgeons. We therefore aimed to introduce an improved free flap technique for repairing scalp avulsion with less tissue from the donor site. This method can achieve maximum primary closure of the donor site and improve its appearance and function as well as reduce the donor-site morbidity by ensuring that a smaller free flap can completely cover the scalp defect. Eight patients with scalp avulsion who had undergone staggered placement of the free flaps were evaluated. Data on the age, cause of scalp avulsion, scalp defect size, degree of avulsion, postoperative complications, and follow-up duration were analyzed. The postoperative evaluation criteria were donor-site sensation, latissimus dorsi muscle strength, upper extremity function, and quality of life. Patients' mean age was 38.7 years. The main cause of scalp avulsion was occupation-related accidents. The mean scalp defect size and postoperative follow-up duration were 26 cm × 20.4 cm and 41.5 months, respectively. One patient developed flap congestion postoperatively. The wounds at the recipient site healed well in all patients. There was no significant difference in the sensation between the surgical and nonsurgical sides. However, the latissimus dorsi muscle strength significantly differed between both sides. The mental component score, which was used to assess quality of life, did not significantly differ between the patients and healthy population, whereas the physical component score significantly differed between the two groups. None of the included patients had severe upper extremity functional limitation. Staggered placement of free flaps achieved maximum primary closure of the donor site and greater scalp avulsion defect coverage with less tissue excised from the donor site. Importantly, donor-site appearance improved and some donor-site functions were preserved postoperatively.

Case Report: Scarring Alopecia After Scalp Avulsion.

Scalp avulsion is a rare trauma in the developed world but is a common injury in countries with poorly established infrastructure and safety regulations. This case reports the long-term sequelae of this injury, observed while conducting a humanitarian mission, and discusses immediate actions for management in an acute setting. We aim to increase awareness about this injury, its risk factors, and treatment options to better prepare clinicians in the developed world to provide care for this condition in the austere environment, which may include not only chronic pain, functional, and aesthetic concerns, but also a psychological impact that persists years after the initial injury.

Saving the Exposed Deep Brain Stimulation Implant: A Comprehensive Review of Implant Extrusion and Reconstructive Options.

INTRODUCTION: Deep brain stimulation (DBS) for the treatment of Parkinson disease is susceptible to complications, such as hardware extrusion, most commonly at the scalp and chest. The authors describe their experience with the management of hardware extrusion and reconstruction with one of the largest single-institution experience and suggest an evidence-based treatment algorithm for the management of such cases. METHODS: A retrospective review of hospital records was performed to identify patients who underwent DBS-related surgery and reconstruction from January 2015 to April 2020. Management of these patients involved culture-directed antibiotics, local wound debridement, various forms of reconstruction, and hardware removal when indicated. RESULTS: Ninety-four patients with 131 DBS-related procedures were included. Twelve patients (12.8%) had hardware extrusion, of which 6 occurred primarily at the scalp and 6 occurred primarily at the chest. Primary closure of scalp wounds (odds ratio, 0.05 [0.004-0.71], P = 0.035) was negatively associated with treatment success. The type of reconstruction of chest wounds did not affect its success ( P = 0.58); however, none of them involved a new surgical bed, such as contralateral or hypochondrial placement. CONCLUSIONS: Hardware extrusion is a significant complication of DBS-related surgery. Management of extrusion at the scalp should involve the use of tension-free, well-vascularized locoregional flaps as opposed to primary closure. Implantable pulse generator extrusions at the chest can be managed with both primary closure and repositioning in a new surgical bed. Extruded DBS implants may be salvaged with appropriate reconstructive considerations, and the authors suggest an evidence-based treatment algorithm.

Scalp Reconstruction Strategy Based on the Etiology of the Scalp Defects.

ABSTRACT: Scalp defects of various etiologies require distinct reconstruction strategies. Therefore, the authors divided scalp defects into the following categories: scar alopecia, open scalp wound, benign or low-grade malignant tumor, and high-grade malignancy. The authors reviewed the experience with scalp reconstruction of a single center to determine the factors that affect the reconstructive choices.Patients who underwent scalp reconstruction between 2008 and 2020 were retrospectively reviewed. Reconstruction methods were classified according to the etiology of the defect and were compared for each etiology. Accordingly, a reconstruction algorithm for scalp defects was proposed.A total of 180 patients were included in this study, and the reconstruction methods demonstrated significant differences according to etiology (P < 0.05). For scar alopecia and open scalp wounds, reconstruction methods such as direct repair, local flap transfer, and tissue expander placement were used depending on the defect size. Patients with benign or low-grade malignancies mainly underwent reconstruction with local flaps or skin grafts and tissue expanders for covering the defects. Patients with high-grade malignancies underwent reconstruction with free flaps if they were scheduled for preoperative or postoperative radiation therapy.Various factors, suchas the etiology, size, location, and depthofthe defect, should be considered in scalp reconstruction. The defect etiology is an important factor that determines the reconstructive goal. Our algorithm is based on the etiology of defects and is intended to aid physicians in choosing the appropriate treatment for various scalp defects.

An Algorithm for Reconstruction of Electrical Injuries of the Scalp.

BACKGROUND: Electrical injuries of the scalp are a frequent occurrence in developing countries. Burns can be contact or conductive and result in extensive tissue damage. The authors present their experience with treatment of scalp and calvarial electrical injuries and propose a management algorithm. METHODS: This was a retrospective cohort study comprising all patients with electrical injuries of the scalp treated at the authors' center between January of 2010 and December of 2016. Noncontrast computed tomography scans were obtained to assess viability of the calvarium in patients who presented more than 2 weeks after injury. Single-stage débridement and reconstruction were performed. All nonviable soft tissue and bone was removed. Soft-tissue reconstruction was performed with skin grafts, local scalp flaps, pedicled trapezius flaps, and free flaps (anterolateral thigh, latissimus dorsi, and scapular). Cranioplasty was performed in a delayed manner with autologous bone grafts. RESULTS: Over a 7-year period, a total of 52 patients underwent scalp reconstruction for high-voltage (44 patients) and low-voltage (eight patients) electrical injury. All patients underwent successful soft-tissue reconstruction. Osteomyelitis with draining sinuses developed in three patients; these patients underwent flap re-elevation and bone débridement, which resulted in a healed wound and stable reconstruction. Cranioplasty was performed with split calvarial grafts in two patients and split rib grafts in four patients. One patient underwent scalp tissue expansion for hair restoration. CONCLUSION: The authors propose an algorithm for reconstruction of electrical injuries of the scalp. Thorough débridement of the calvarium is the most important determinant of a successful outcome. CLINICAL QUESTION/LEVEL OF EVIDENCE: Therapeutic, IV.

Nonreplantable Total Scalp Avulsion Reconstruction with Acellular Biologic Matrix and Long-Term Outcome.

ABSTRACT: Total scalp avulsion is a significant injury typically occurring as a result of industrial accidents involving high-speed rotary machines. Although ideal, scalp replantation is uncommon secondary to the nature of the injury and lack of viable microvas-cular anastomosis targets. Therefore, these defects are often reconstructed with microvascular free tissue transfer, with or without skin grafting. We present a unique case of a patient with total scalp avulsion achieving complete, stable skin coverage over partially intact periosteum using only spare parts of the amputated scalp as a temporary full-thickness graft and porcine urinary bladder matrix, thus, avoiding significant donor site morbidity or extensive surgery. At 4 years postoperative, the scalp coverage remains stable.

Scalp laceration repair with hair apposition technique in the maritime environment under telemedicine guidance using free open-access medical resources.

Requests for medical advice to evaluate injuries sustained on board a shipping vessel make up a significant number of calls to Telemedical Maritime Assistance Services. As the maritime setting is an austere environment with regards to resources such as equipment and availability of medically trained personnel, it is important to have a set of skills and techniques to treat all manner of common injuries with the tools at hand. Here we discuss a case report of using telemedicine and free open-access medical education resources to teach the hair apposition technique to an on-board medical provider for the treatment of a scalp laceration with good outcome.

Face Autotransplantation After an Accident.

ABSTRACT: Microsurgical replantation is considered the best method to treat avulsion or amputation injuries of unique head parts, including the scalp, eyelid, nose, ear, lip, and tongue. However, there is currently no report on microsurgical replantation of substi-tutable facial tissues in the literature. This report presents a patient with avulsed facial composite tissue composed of the skin and subcutaneous layers treated by microsurgical replantation. The present case shows that microsurgical replantation of small facial composite tissues is feasible. The authors suggest that the indication spectrum for microsurgical replantation should be expanded beyond current clinical practice.

Stepwise Reconstruction of a Large, Self-Inflicted Calvarial Defect.

BACKGROUND AND IMPORTANCE: Scalp expansion ensures that tissue similar in color, texture, thickness, and most importantly, hairbearing quality, is available to resurface the scalp. It is a critical option for reconstruction of large calvarial defects. CLINICAL PRESENTATION: Over 6months, a 55-year-old male patient excoriated his scalp into a full-thickness scalp and calvarial wound resulting in dural violation and meningitis. The patient presented with altered mental status and methicillin-susceptible staphylococcus aureus (MSSA) bacteremia, cranial osteomyelitis, and an intracranial abscess secondary to the large scalp defect. The patient underwent immediate debridement and dural coverage with a scalp rotational flap. Several months later he began delayed stepwise cranioplasty with multiple scalp tissue expanders given the deficiency of soft tissue. CONCLUSIONS: This case is presented to highlight the unusual mechanism of injury and the complex reconstructive approach in surgical management.

Reconstrucción de cuero cabelludo, por quemadura química extensa, en tiempos de COVID / Scalp reconstruction, from extensive chemical burn, in time of COVID

Las quemaduras químicas en cuero cabelludo, que se producen en lugares públicos como salones de belleza o peluquerías causadas por mezclas de sustancias activas como persulfatos y peróxido de hidrógeno, secundarias a la decoloración de cabellos, producen graves secuelas de alopecias en pacientes jóvenes. Se trata de un caso clínico, de quemadura química, espesor completo, extensa, en cuero cabelludo. Productos utilizados en forma cotidiana en salones de belleza, peluquerías o domicilios, que tiene estrecha relación con el daño. Resolución del caso con colgajos locales, con tiempos de internación y quirúrgicos cortos, en tiempos de COVID. Enfoque de la falta de control de sustancias usadas en peluquerías, pocos casos publicados y secuelas psicosociales importantes, con pronta mejoría de calidad de vida y reinserción social

Chemical burns in scalp after hair bleaching are produced in public places such as hairdressing salons and are caused by the combination of active agents like persulfate and hydrogen peroxide. The burns leave severe sequels of alopecia in young patients. This is about a clinical case of a chemical burn in the sculp which is full thickness and has a great large. Products used on a daily basis in hairdressing salons or in the domiciles have a close connection with the hurt. In times of COVID the case was resolved with local flaps, and short period of hospitalization and surgical. Focus on the lack of control in the usage of substances made by hairdressing salons, the existence of few published cases and the main psychosocial sequels, a speedy recovery in the quality of life and social reintegration

Sensitivity of material model parameters on finite element models of infant head impacts.

Finite element (FE) models of human infant heads can be used in forensic investigations to infer whether a given pattern of head injuries could have resulted from a hypothetical scenario. This requires accurate models of the behaviour of the head tissues. Material models for human infant head tissues have been developed using experimental data from both infant and adult tissues. Experimental data for infants are scarce due to ethical considerations. To guide future experimental work, a sensitivity analysis of the material model parameters was conducted on a FE model of an infant occipital head impact. A simplified head geometry, consisting of the scalp, skull, suture and brain, was impacted onto a rigid anvil at a speed equivalent to a drop height of 0.3 m. The scalp, suture and brain were represented using hyperelastic material models, while an isotropic elastic model was used for the skull. Three hundred simulations were performed, with the material model parameters varied in each. Spearman's rank correlation was used to determine the influence of each parameter on selected outputs which predict injury level. The elastic modulus and Poisson's ratio for the skull were the most important parameters, followed by the hyperelastic constants for the brain, scalp and suture. It is recommended that future research prioritises increasing experimental datasets of skull elastic modulus, especially at higher loading rates, followed by obtaining data for the skull Poisson's ratio. The results from this sensitivity analysis can ensure that future experimental work makes the best use of scarce tissues.