Outcome after burns: an observational study on burn scar maturation and predictors for severe scarring

Patient-reported scar quality in paediatric and adult burn patients: A long-term multicentre follow-up study

BACKGROUND

Burn scar maturation can take several years but is generally studied shortly after injury. Therefore, we investigated patient-reported scar quality up to 5-7 years post-burn.

METHODS

Patients with ≤ 20 % total body surface area burned completed the Patient Scale of the Patient and Observer Scar Assessment Scale (POSAS 2.0) on the same scar at 3, > 18 months (median 28 months) and 5-7 years (median 63 months) post-burn.

RESULTS

Fifty-eight patients (21 children; 37 adults) with a median total body surface area burned (TBSA) of 6.3 % participated. Average patient-reported scar quality (POSAS score) was generally worst at 3 months (median score: 4.2), best at 28 months (median score: 2.2) and intermediate at 63 months post-burn (median score: 3.4) (p < 0.001). Many patients (66 %) reported a median 1.8 point higher (worse) POSAS score at 63 months compared to 28 months post-burn, whereas 14 % reported an identical, and 21 % a lower (better) score. At any assessment, largest differences with normal skin were reported for scar colour. Univariate predictive factors of long-term patient-reported scar quality were scar quality at 3 months (p = 0.002) and 28 months post-burn (p < 0.001), full-thickness burn size (p = 0.033), length of hospital stay (p = 0.003), and number of surgeries (p < 0.001).

CONCLUSION

Two-thirds of patients with burns up to 20 % TBSA scored the quality of their scars worse at 63 months compared to 28 months post-burn. Whether this corresponds to increased dissatisfaction with scars in the long term should be further investigated. These new insights add to the body of knowledge on scar maturation and underscores the importance of discussing patients' expectations.

Nanocellulose significantly reduces number of anesthetics, hospital days, and in-patient dressing changes compared to PU-Foam Dressing: A prospective cohort study in children

BACKGROUND

Pediatric thermal injuries can have profound physical and psychological effects. Long-term care, including wound dressing selection, significantly impacts outcomes. This study compared treatment related variables and long-term results of bacterial nanocellulose (BNC) and polyurethane foam (PU-foam) dressings in pediatric burn care.

METHODS

A prospective cohort study comparing BNC (2018-2020) and PU-foam (2016-2018) in pediatric burn patients. Data included demographics, wound characteristics, infection rates, treatment duration, anesthesia procedures, dressing changes, scar assessments (POSAS, VSS), colorimeter measurements, and quality of life (CDLQI). Regression analyses were performed to correct for differences in burn depth.

RESULTS

After correction for burn depth, BNC showed a shorter hospital stay duration (p = 0.007), a lower number of procedures under general anesthesia (p<0.0001) and a reduced number of inpatient dressing changes (p = 0.006), compared to PU-foam, whereas wound infection rates did not differ between the treatment groups (p = 0.169). Scar outcomes (POSAS, VSS, colorimeter measurements) and quality of life (CDLQI) were comparable for both treatments.

DISCUSSION

BNC dressing benefits include significantly fewer anesthesia procedures, a reduced number of inpatient dressing changes and a shorter hospital stays, supporting the use of BNC dressing. Long-term scar outcomes with BNC are comparable to established dressings like PU-foam. Further randomized trials are necessary to confirm these findings.

Managing Long-term Orofacial Contractures and Microstomia Through Intraoral Stretching

Microstomia and orofacial contractures continue to garner interest regarding the effectiveness of treatment methodologies utilized to impact functional change. Oral splints are an accepted tool in the management of microstomia. However, the concepts of which oral splints to use, timing of initiation, and duration of treatment have not gained a consensus. This article reviews approaches to oral splinting and an alternative intraoral approach using splints designed to provide a graded, low load, multidirectional, and prolonged stretch specifically in facial burn survivors including those with mature scars. Two participants participated in a trial using oral splints placed inside the mouth at established contracture points. Participants were requested to use the splints for 1 h twice daily. Participants were photographed weekly producing 9 facial expressions, and distance between 13 facial landmarks was measured to evaluate change in tissue length. Numerical changes observed from beginning to end of the trial indicate positive and negative alterations, signifying lengthening or shortening of tissue. Negative changes denote reduction in distance between endpoints, while positive changes signify an increase. Participants verbalized functional improvements in oral motor and psychosocial function posttreatment. To date, oral splints can be custom fabricated for each individual patient. However, few oral splints are created to provide multidirectional stretch focusing on problem areas across the mid and lower face. The intraoral splints and regimen described here have the capability of providing a stretching intervention that could be applicable in various stages of burn recovery.

Cutaneous functional units prediction in outcomes of early and intensive splinting following palmar burn injury in young children: a prospective study

BACKGROUND

Palmar burn injuries are common in young children and can result in contracture.

METHODS

A prospective longitudinal study describes outcomes of palm and digit extension splint use following burn in 75 children (83 hands) aged < 5 years and determines whether specific cutaneous functional units (CFUs) are associated with early signs of contracture (ESC). Outcomes were assessed up to 9-18 months following burn. Routine clinical data was collected at therapy reviews.

RESULTS

Children were splinted > 12 h/day for a mean of 158 days following burn. The mean time to splint cessation was 264 days following burn. Fourteen hands developed ESC (17%): 12 hands had full ROM restored following conservative management, 2 hands (3%) progressed to contracture. Hands that developed ESC had greater healing time (p = 0.002), greater number of CFUs affected (p < 0.001), and greater number of immediate first webspace and extended first webspace CFUs affected (p = 0.002, p < 0.001 respectively). ESC risk increases for each day to heal (odds ratio [OR] 1.1, 95% CI 1.0-1.2) and each CFU in extended first webspace (OR 2.8, 95% CI 1.5-5.0).

CONCLUSION

Early and intensive splinting following palmar burn results in excellent ROM. Burns involving more CFUs or the first webspace are associated with ESC.

The Short- and Long-Term Outcome Priorities of a Western Australian Adult Burn Population

To optimize patient recovery, understanding which outcomes are most important to burn patients is key. However, research to determine what outcomes are patient priorities is limited. Therefore, we assessed what outcomes are most important to Western Australian burn patients, separately in the short-term (<6 months) and long-term (6-24 months) after injury. Adult patients who had a burn injury 3-36 months ago completed a survey, rating the importance of 36 short- and long-term outcomes. The survey items were ranked according to the number of patients reporting the outcome as "very important." Results were compared between subgroups based on age, gender, burn size, and number of surgeries. Ninety-three patients were included. In the short-term, "not having a wound infection" (87.1%), "good wound healing" (83.9%), and "walking or moving around" (74.7%) were the most important outcomes. "Lifting or moving something" (67.6%), "walking or moving around" (66.2%), and "being independent" (66.2%) were reported as most important in the long-term. Scar-related outcomes were more important to females and to patients with multiple surgeries; mental health outcomes were priorities for females and patients with major burns; walking and moving around to males and older patients; and social and financial outcomes were rated highly by patients with major burns and multiple surgeries. In conclusion, the most important outcomes were consistent across time periods, indicating the importance of core outcomes in longitudinal follow-up. The wide range of priority outcomes and differences between subgroups underlines the need for multidisciplinary care and a patient-centered approach to support patients.

Comparison of Clinical Estimation and Stereophotogrammic Instrumented Imaging of Burn Scar Height and Volume

Descriptive clinical tools for characterizing burn scars are limited by between-user variability and unknown sensitivity to change over time. We previously described preclinical assessment of stereophotogrammetry as a valid measure of burn-related scars. Here, we compared the estimated vs. instrumented measurements of maximum height and total positive volume of 26 burn scars. The burn scars were imaged with the QuantifiCare LifeViz Micro 3D camera. Three experienced wound care therapists first estimated, then measured using 3D Track software, the imaged scars' height and volume. Two-factor analysis without replication was performed to calculate intraclass correlation coefficients (ICCs) between assessors' estimated scar height and volume, and measured height and volume. Two-sided Wilcoxon tests were performed comparing the mean estimated height and volume with the estimated and measured outputs. The estimated scar height's ICC was 0.595, and for volume, it was 0.531. The measured scar height's ICC was 0.933 and for volume, it was 0.890. The estimated and measured volume were significantly different (z = -2.87, p = 0.041), while the estimated and measured height were not (z = -1.39, p = 0.161). Stereophotogrammic measurement of scar height and volume is more reliable than clinical photograph assessment. Stereophotogrammetry should be utilized when assessing burn scar height and volume, rather than subjective estimates from clinical scar tools.

Outcomes that matter most to burn patients: A national multicentre survey study in the Netherlands

BACKGROUND

The use of patient-reported outcomes to improve burn care increases. Little is known on burn patients' views on what outcomes are most important, and about preferences regarding online Patient Reported Outcome Measures (PROMs). Therefore, this study assessed what outcomes matter most to patients, and gained insights into patient preferences towards the use of online PROMs.

METHODS

Adult patients (≥18 years old), 3-36 months after injury completed a survey measuring importance of outcomes, separately for three time periods: during admission, short-term (<6 months) and long-term (6-24 months) after burn injury. Both open and closed-ended questions were used. Furthermore, preferences regarding the use of patient-reported outcome measures in burn care were queried.

RESULTS

A total of 140 patients were included (response rate: 27%). 'Not having pain' and 'good wound healing' were identified as very important outcomes. Also, 'physical functioning at pre-injury level', 'being independent' and 'taking care of yourself' were considered very important outcomes. The top-ten of most important outcomes largely overlapped in all three time periods. Most patients (84%) had no problems with online questionnaires, and many (67%) indicated that it should take up to 15 minutes. Patients' opinions differed widely on the preferred frequency of follow-up.

CONCLUSIONS

Not having pain and good wound healing were considered very important during the whole recovery of burns; in addition, physical functioning at pre-injury level, being independent, and taking care of yourself were deemed very important in the short and long-term. These outcomes are recommended to be used in burn care and research, although careful selection of outcomes remains crucial as patients prefer online questionnaires up to 15 minutes.

Scars

Wound healing occurs as a response to disruption of the epidermis and dermis. It is an intricate and well-orchestrated response with the goal to restore skin integrity and function. However, in hundreds of millions of patients, skin wound healing results in abnormal scarring, including keloid lesions or hypertrophic scarring. Although the underlying mechanisms of hypertrophic scars and keloid lesions are not well defined, evidence suggests that the changes in the extracellular matrix are perpetuated by ongoing inflammation in susceptible individuals, resulting in a fibrotic phenotype. The lesions then become established, with ongoing deposition of excess disordered collagen. Not only can abnormal scarring be debilitating and painful, it can also cause functional impairment and profound changes in appearance, thereby substantially affecting patients' lives. Despite the vast demand on patient health and the medical society, very little progress has been made in the care of patients with abnormal scarring. To improve the outcome of pathological scarring, standardized and innovative approaches are required.

Special Considerations for Pediatric Burn Injuries

Burns are the fifth leading cause of non-fatal childhood injuries. Physiological differences between children and adults lead to unique considerations when treating young burn survivors. In addition to the physical and psychological concerns which must be considered in adult burn rehabilitation, pediatric burn rehabilitation must also consider the developmental stage of the child, preexisting developmental delays, and the impact of scaring on growth and motor skill attainment. Treatment of pediatric burn survivors requires a multidisciplinary approach centered around caring for not only the child but also for their parents, siblings, and other caregivers. For children who sustain burns early in life, long-term follow-up is essential and should be conducted under the guidance of a burn center for the early identification of needed interventions during periods of growth and development. This article considers pediatric-specific factors, which may present during the rehabilitation of a child with a burn injury.

Hypertrophic Scar

Hypertrophic scars frequently develop post-burn, and are characterized by their pruritic, painful, raised, erythematous, dyschromic, and contractile qualities. This article aims to synthesize knowledge on the clinical and molecular development, evolution, management, and measurement of hypertrophic burn scar for both patient and clinician knowledge.

Efficacy of hydrosurgical excision combined with skin grafting in the treatment of deep partial-thickness and full-thickness burns: A two-year retrospective study

INTRODUCTION

Deep partial-thickness and full-thickness burn wounds often undergo tangential excision or escharectomy to expose healthy tissue, combined with skin grafting to promote wound healing. However, conventional tangential excision with the humby knife leads to inevitable damage to the dermis while excising burn tissue due to the lack of precision. Indeed, the preservation of dermal tissue is a key factor in determining wound healing and scar quality. The precision and tissue selectivity of the Versajet Hydrosurgical System has been established for excising burn tissue while preserving dermal tissue. In this study, we retrospectively compared the efficacy of "Hydrosurgical excision combined with skin grafting" and "Conventional tangential excision combined with skin grafting" in treating deep partial-thickness and full-thickness burn wounds to demonstrate that hydrosurgery improved the treatment of deep partial-thickness and full-thickness burns.

METHODS

A total of 86 patients with deep partial-thickness and/or full-thickness burns with a total burn surface area (TBSA) ≤ 25% from July 2018 to July 2020 were included in this study and were divided into experimental (hydrosurgical excision combined with skin grafting, n = 43) and control (conventional tangential excision combined with skin grafting, n = 43) groups. Parameters were analyzed, including the intraoperative blood loss volume per unit area of grafted skin, surgery duration, wound healing time, skin graft survival, and the treatment costs per unit of burned area. Scar assessment was performed at 1 year with the modified Vancouver Scar Scale linked with TBSA (mVSS-TBSA).

RESULT

No significant difference was found in male to female ratio, age, weight, TBSA, burn depth, skin grafting area (SKA), skin grafting methods, cases treated with carbon dioxide fractional laser or incidence of inhalation injury, and the incidence of hypovolemic shock between two groups(p > 0.05). Compared with the control group, patients treated with hydrosurgical excision combined with skin grafting experienced less intraoperative blood loss volume per unit area of grafted skin (p < 0.05). The mVSS-TBSA of patients that underwent hydrosurgical excision combined with skin grafting was significantly improved in comparison to the control group (p < 0.01). No significant difference was found in surgery duration, wound healing time, skin graft survival and treatment costs per unit of burned area between the two groups (p > 0.05).

CONCLUSION

Hydrosurgical excision combined with skin grafting reduced intraoperative blood loss volume per unit area of grafted skin, improved scarring 1-year after injury, and did not increase the treatment costs per unit of burned area. This technique provides a novel alternative for managing deep partial-thickness and full-thickness burn wounds.

Reliability, Validity, and Predictive Validity of Cutaneous Functional Units Predicted to Scar Following Palmar Burn Injury in Young Children

Identification of children at risk of palmar burn scar is important for early initiation of scar management. This study determined the interrater reliability of face-to-face and photographic assessments of 29 palmar cutaneous functional units (CFUs) predicted to scar following palmar burn. The validity of photographic compared to face-to-face assessment, and the predictive validity of both assessment types to identify scarring at 3 to 6 months following burn, was also established. Thirty-nine children (40 hands) post burn injury were assessed face-to-face in the clinical setting, following healing of their palmar burn, by three burn therapists. Photographs of the children's hands at initial assessment were assessed by the same therapists a minimum of 6 months later. To determine which CFUs scarred, children were reassessed face-to-face in the clinical setting 3 to 6 months following their burn. For analysis, 29 CFUs were merged into eight separate groups to determine the number of CFUs predicted to scar per CFU group for face-to-face and photographic assessments. The range of agreement for individual CFUs within CFU groups was also calculated for both assessment types. Excellent interrater reliability was established for face-to-face assessment in all eight CFU groups (ICC2,1 0.83-0.96). Photographic assessment demonstrated good to excellent interrater reliability in six CFU groups (ICC2,1 0.69-0.90) and validity in seven CFU groups (ICC2,1 0.66-0.87). Good to excellent predictive validity was established for both assessment types in seven CFU groups (face-to-face ICC2,1 0.60-0.95, photographic ICC2,1 0.69-0.89). Experienced therapists can reliably assess CFUs face-to-face or via photographs and predict future scar development.

Modified Colson flap with subcutaneous liposuction for one-stage donor site removal: A case series

OBJECTIVES

The aim of this study was to evaluate the functional and cosmetic results of an innovative procedure for modified Colson flap-graft consisting of immediate defatting of the flap by a liposuction cannula.

METHODS

A cross-sectional study was performed among patients with deep hand burns requiring a modified Colson flap between 2018 and 2021. Outcomes included functional and cosmetic assessment of the hand through a quality-of-life questionnaire, a sensitivity scale and a scar assessment scale.

RESULTS

During this period, 7 patients were operated on using our technique. One patient was lost to follow-up; 7 patients with a median age of 44 years were included, with a total of 10 burned hands. The burns were thermal in 5 out of 7 cases and the coverage concerned the whole hand in 50% of the cases. The flaps all received cannula defatting. The median time to flap weaning was 23 days (20 to 30 days). The median follow-up was 16 months. One case required remote flap weaning. The median POSAS (Patient and Observer Scar Assessment Scale) per patient was 4 and 2 per observer. The median BMRCSS (British Medical Research Council Sensory Scale) was 122. One case had recovered S2 sensitivity, the other cases had S3 or S4 sensitivity.

CONCLUSION

Immediate defatting is one of the factors in tegumental quality allowing rapid functional recovery of the hand. The cannula defatting technique does not appear to require additional defatting time. The use of the liposuction cannula allows a one-step, homogeneous, and easier defatting, with a lower risk of devascularization.

The practical utility of psychometric scales for the assessment of the impact of posttraumatic scars on mental health

BACKGROUND

Scars are a natural consequence of the healing process, but with an impact on the psychological and social level for the individual, which can even lead to withdrawal and social stigmatization. We aimed to analyze the psychosocial impact determined by post-traumatic scars, using psychometric scales, to assess the effectiveness of the Mekereș' Psychosocial Internalization Scale (MPIS), and to identify relevant predictors of traumatic and surgical scar internalization.

METHODS

Our cohort included 293 participants, 149 women and 144 men, aged 18-64 years who were screened for scar characteristics and completed a set of psychological scales. We compared the results obtained in two subgroups: 153 subjects with posttraumatic scars and 140 with surgical scars.

RESULTS

Relevant predictors for posttraumatic scar internalization (R 2 = 0.721) are adaptation time, age of the occurrence and subjective appraisal, while for the depression, and hopelessness relevant predictors are the subjective appraisal of the scars and the posttraumatic quality of life.

CONCLUSION

The psychological and social reporting of the aftermath of trauma, that has been followed by scar-ring, is an indicator of how a person will react and could indicate the susceptibility to psycho-pathology.

Outcomes of Meek micrografting versus mesh grafting on deep dermal and full thickness (burn) wounds: Study protocol for an intra-patient randomized controlled trial

INTRODUCTION

Autologous split thickness skin grafting is the standard-of-care for most deep dermal and full thickness skin defects. Historically, mesh grafting is used to expand skin grafts for smaller defects and other techniques such as Meek micrografting is used to enable expansion for larger skin defects. Yet, Meek micrografting is increasingly used for smaller skin defects as well. Both techniques are frequently used, especially in burn centers, but evidence on which one is preferable for relative smaller skin defects is lacking. Therefore, an intra-patient randomized controlled trial was designed to adequately compare multiple outcomes of the Meek micrografting and mesh grafting techniques.

MATERIALS AND METHODS

A multicenter intra-patient controlled randomized trial is being performed in two burn centers (the Netherlands and Belgium) to compare multiple outcomes of Meek micrografting and mesh grafting burns or skin defects. Study registration number (NL74274.029.20). Adult patients with a (burn) wound and an indication for surgical excision and skin grafting were screened for inclusion. In total 70 patients will be included and the primary outcome is scar quality twelve months post-surgery assessed by the Patient and Observer Scar Assessment Scale. Moreover, graft take, re-epithelialization, infection rate, donor site size and patients' preference are also measured within hospital admission, on 3 months and 12 months post-surgery.

DISCUSSION

This is the first randomized trial that is intra-patient controlled, which enables a proper comparison between both skin expansion techniques. The results of this study will contribute to the clarification of the indications of both techniques and ample attention is paid for the patients' opinion on the surgical treatment options.

Comparison of Long-Term Skin Quality and Scar Formation in Partial-Thickness Burn Wounds Treated with Suprathel® and epicitehydro® Wound Dressings

Background and Objectives: Scar formation after burn trauma has a significant impact on the quality of life of burn patients. Hypertrophic scars or keloids can be very distressing to patients due to potential pain, functional limitations, or hyper- or hypopigmentation. In a previous study comparing Suprathel® and the new and cheaper dressing epicitehydro®, we were able to show that pain reduction, exudation, and time until wound-healing of partial-thickness burn wounds were similar, without any documented infections. No study exists that objectively measures and compares skin and scar quality after treatment with Suprathel® and epicitehydro® at present. Materials and Methods: In this study, the scar quality of 20 patients who had been treated with Suprathel® and epicitehydro® was objectively assessed using the Cutometer®, Mexameter®, and Tewameter®, as well as subjectively with the Patient and Observer Scar Assessment Scale, 3, 6, and 12 months after burn injury. Results: In all performed measurements, no significant differences were detected in scar formation after treatment of partial-thickness burn wounds with the two dressings. Conclusions: Both the newer and less expensive wound-dressing epicitehydro® and the well-known wound-dressing Suprathel® resulted in stable wound closure and showed good cosmetic results in the follow-up examinations.

Role of burn severity and posttraumatic stress symptoms in the co-occurrence of itch and neuropathic pain after burns: A longitudinal study

Itch and pain are common after burns. Neuropathic mechanisms may underlie both modalities but remain not well-understood. This study aims to prospectively document neuropathic pain symptoms and to identify potential itch symptom profiles that differ regarding duration and co-occurrence with neuropathic pain which may inform underlying pathophysiological mechanisms and respond to different treatments. Adult burn survivors (n = 192) self-reported itch and neuropathic pain at 2 weeks post-discharge, 3, 6, 12, and 18 months post-burn. Based on the presence of itch and pain symptoms over time, participants were allocated to one itch profile: transient itch/pain, chronic itch, or chronic itch & pain. Profiles were compared on itch intensity over time using General Linear Modeling. Age, gender, burn severity, posttraumatic stress (PTS) symptoms and baseline itch intensity were examined as potential predictors of the profiles in a Multi-nominal regression analysis. Neuropathic pain occurred in 54% after discharge which decreased to 24% 18 months later. Itch intensity was highest in the chronic itch & pain profile. Compared to the transient itch profile, the chronic itch & pain profile was associated with higher burn severity and more PTS symptoms. Compared to the chronic itch profile, the chronic itch & pain profile was associated with more PTS symptoms. Findings suggest that biological and psycho-dermatological processes underlie both chronic neuropathic pain and itch processes in burn scars. Further research should elucidate the mechanisms underlying the different itch profiles, with specific focus on skin innervation and psychological factors.

Diagnosis, Treatment, and Management of Painful Scar: A Narrative Review

Painful scars can develop after surgery or trauma, with symptoms ranging from a minor itch to intractable allodynia. The problem of the painful scar may involve both intraneural and extraneural structures, requiring a systematic approach to diagnosis and treatment of this neuropathic pain condition that can impact quality of life and function profoundly. In this review, we outline the algorithm for the diagnosis, management, medical and surgical treatment of painful scars.

Predictors for Estimating Scars' Internalization in Victims with Post-Traumatic Scars versus Patients with Postsurgical Scars

(1) Background: Scars are the consequence of physiological inherent healing processes of post-traumatic and surgical lesions with a psychological impact. Post-traumatic scarring may induce emotional and behavioral changes through social stigma. In this study we analyze the internalization of scars and their impact on hopelessness, depression, or the perception of social support in subjects with post-traumatic scars compared to people with surgical scars. (2) Methods: to research this suggested model, we analyzed data collected from 110 participants 61 women and 49 men, aged between 18 and 64 years; 55 participants had post-traumatically and 55 surgically acquired scars. They all were examined to assess the characteristics of scars, were asked to complete four psycho-social scales, and the results were compared. (3) Results: our results indicate that people with post-traumatic scars are oriented toward the internalization of scars, depending on their shape and size. We argue that hopelessness, appreciation of scars, age, and how scars are produced are important predictors of internalization. (4) Conclusions: the patient's attitude toward the appearance of a scar is an indicator of how he/she will react in the future and it could predict the vulnerability to hopelessness. Finally, we nuance the impact of objective bodily harm on the psychological and moral suffering.

Early Laser for Burn Scars (ELABS): protocol for a multi-centre randomised, controlled trial of both the effectiveness and cost-effectiveness of the treatment of hypertrophic burn scars with Pulsed Dye Laser and standard care compared to standard care alone [version 1; peer review: 2 approved]

This paper outlines the protocol for a study that is being carried out at multiple centres across the UK in the next three years. It is a Research for Patient Benefit (RfPB) study funded by the National Institute for Healthcare Research (NIHR). The aim is to assess the effectiveness of treating hypertrophic burns scars with pulsed dye laser (PDL) at an early stage of scar formation. The objective is to improve Quality of Life for the patient by improving both the appearance and quality of burn scarring, as well as reducing its psychological impact. This is a parallel-arm randomised, controlled trial to compare PDL and standard care against standard care alone. The difference is measured between baseline and six-month follow-up. Recruits are within three months of healing from a burn injury; with wounds showing a defined potential for hypertrophic scarring. A total of 120 patients are recruited in a multi-centre study; with randomisation in a 1:1 allocation to each arm. The treatment arm receives 3 PDL treatments at six-week intervals in addition to standard care, whereas the control arm receives standard care alone. The primary outcome is the patient-rated part of the Patient and Observer Scar Scale (POSAS). Psychological and psycho-social impact is evaluated using the CARe burn scale (UWE, Bristol) and Quality Adjusted Life Years (QALY) is determined using the Short-Form Health Survey (SF-12). The study evaluates both the cost-effectiveness through an economic analysis and the patient-reported experience of the treatment by phone interviews.

Longitudinal monitoring and prediction of long-term outcome of scar stiffness on pediatric patients

Background

Hypertrophic scarring after burn injury is one of the greatest unmet challenges in patients with burn injuries. A better understanding of the characteristics of scar maturation and early prediction of the long-term outcome of scarring are prerequisites for improving targeted therapies and pivotal for patient counselling.

Methods

Repeated measurements of scar stiffness in 11 pediatric patients were performed over the course of 1 year using 2 suction devices, the Cutometer and the Nimble. In addition, the observer pliability score of the Patient and Observer Scar Assessment Scale was applied. This longitudinal study allowed quantification of the ability of each of the measured parameters to reflect scar maturation, as indicated by change in skin pliability/stiffness, over time (using linear regression); the ability to distinguish individual patients (intraclass correlation coefficient (ICC)); the correlation of the devices (Spearman correlation coefficient); and the ability to predict long-term scar maturation based on early scar assessment (using receiver operating characteristic).

Results

All the tools used showed significant longitudinal decrease of scar stiffness from 3 months until 12 months after the injury. The Nimble (ICC_patient ^Nimble = 0.99) and the Cutometer (ICC_patient ^Cuto = 0.97) demonstrated an excellent ability to distinguish between individual patients. The Nimble seemed to be able to predict the 12-month pliability of scars based on early (3-month) measurements (area under the curve (AUC)_12m ^POSAS = 0.67; AUC_12m ^C = 0.46; AUC_12m ^N = 0.79).

Conclusions

The results of this preliminary study suggest that all 3 tools provide suitable means to quantify alterations in scar stiffness over time. Initial evidence suggests the Nimble is most favorable for predicting changes in stiffness associated with long-term scar maturation. Further studies with a larger sample size are required to validate tissue suction as a clinical tool for analysis of changes of scar stiffness over time.

A Scoping Review of the Methodology Used in Studies of Genetic Influences on the Development of Keloid or Hypertrophic Scarring in Adults and Children After Acute Wounding

Significance: Keloid and hypertrophic scarring are common following acute wounds. However, the variability in scarring outcomes between individuals and in particular, the association between genetic factors and scarring, is not well understood. This scoping review aims to summarize the methodology used in studies of genetic influences on the development of keloid or hypertrophic scarring in adults and children after acute wounding. The objectives were to determine the study designs used, the characteristics of participants included, the tools used to assess scarring and the length of follow-up after wounding. Recent Advances: The review was conducted according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines. Medline, Excerpta Medica Database (EMBASE), Web of Science, Biosciences Information Service (BIOSIS), Prospective Register of Systematic Reviews (PROSPERO), The Human Genetic Epidemiology (HuGE) Navigator (database of genetic association studies), and the genome-wide association study Catalog were searched from January 2008 to April 2020. Cohort studies and case-control studies that examined the association between one or more genetic variations and the development of keloid or hypertrophic scarring were eligible for inclusion. A narrative synthesis that grouped studies by wound type was conducted. Critical Issues: Nine studies met the inclusion criteria (five in burns, four surgical wounds, and none in other types of acute wounds). Seven assessed hypertrophic scarring, one keloid scarring, and one both scar types. Seven studies used a prospective cohort design. All studies used subjective methods (clinician or patient observation) to assess scarring. There was considerable variation in how scar scales were operationalized. Future Directions: This review identified a small body of evidence on genetic susceptibility to scarring after acute wounding. Further studies are needed, and in a wide range of populations, including patients with wounds caused by trauma.

Cost-effectiveness of adjunctive negative pressure wound therapy in paediatric burn care: evidence from the SONATA in C randomised controlled trial

Negative pressure wound therapy (NPWT) has been shown to improve clinical outcomes for children with burns by accelerating wound re-epithelialisation. Its effects on healthcare costs, however, remain poorly understood. The aim of this study was to evaluate the cost-effectiveness of NPWT from a healthcare provider perspective using evidence from the SONATA in C randomised controlled trial, in which 101 children with small-area burns were allocated to either standard care (silver-impregnated dressings) or standard care in combination with adjunctive NPWT. The primary outcome, time to re-epithelialisation, was assessed through a blinded photographic review. Resource usage and costs were prospectively recorded for each participant for up to 6 months. Incremental cost-effectiveness ratios and dominance probabilities were estimated and uncertainty quantified using bootstrap resampling. Mean costs per participant—including dressings, labour, medication, scar management, and theatre operations—were lower in the NPWT group (AUD $903.69) relative to the control group (AUD $1669.01). There was an 89% probability that NPWT was dominant, yielding both faster re-epithelialisation and lower overall costs. Findings remained robust to sensitivity analyses employing alternative theatre costs and time-to-re-epithelialisation estimates for grafted patients. In conclusion, adjunctive NPWT is likely to be a cost-effective and dominant treatment for small-area paediatric burns (ANZCTR.org.au:ACTRN12618000256279).

Regrafting of the Split-Thickness Skin Graft Donor-Site: Is It Beneficial?

Split-thickness skin grafting remains a fundamental treatment for patients with deep burns and other traumatic injuries. Unfortunately, the donor site wound that remains after split skin graft (SSG) harvesting may also cause problems for the patient; they can lead to discomfort and scars with a poor cosmetic outcome. Regrafting of the donor site is one of the methods described to improve donor site healing and scarring. In this report, we describe a case of a 26-year-old woman with a self-inflicted chemical burn (0.5% TBSA) who underwent split skin grafting. During surgery, only part of the donor site was regrafted with split skin graft remnants. This part healed faster and had a better scar quality at 3 months postsurgery. Nevertheless, the appearance and patients' opinion on the regrafted part deteriorated after 12 months. With this case report, we aim to create awareness of the long-term consequences of regrafting, which may differ from short-time results. Patients expected to have poor reepithelialization potential may benefit from regrafting of the SSG on the donor site. But in healthy young individuals, timewise there would be no benefit since it can lead to an aesthetically displeasing result.

Hypertrophic Scarring: Current Knowledge of Predisposing Factors, Cellular and Molecular Mechanisms

Hypertrophic scarring (HSc) is an age-old problem that still affects millions of people physically, psychologically, and economically. Despite advances in surgical techniques and wound care, prevention and treatment of HSc remains a challenge. Elucidation of factors involved in the development of this common fibroproliferative disorder is crucial for further progress in preventive and/or therapeutic measures. Our knowledge about pathophysiology of HSc at the cellular and molecular level has grown considerably in recent decades. In this article, current knowledge of predisposing factors and the cellular and molecular mechanisms of HSc has been reviewed.

Cutting into wound repair

The skin is home to an assortment of fibroblastic lineages that shape the wound repair response toward scars or regeneration. In this review, we discuss the distinct embryonic origins, anatomic locations, and functions of fibroblastic lineages, and how these distinct lineages of fibroblasts dictate the skin's wound response across injury depths, anatomic locations, and embryonic development to promote either scarring or regeneration. We highlight the supportive role of the fascia in dictating scarring outcomes; we then discuss recent findings that indicate fascia mobilization by its resident fibroblasts supersede the classical de novo deposition program of wound matrix formation. These recent findings reconfigure our traditional view of wound repair and present exciting new therapeutic avenues to treat scarring and fibrosis across a range of medical settings.

Scar quality in children with burns 5-7 years after injury: A cross-sectional multicentre study

Long-term scar formation is an important adverse consequence in children with burns, however, information regarding scar quality in the long-term is lacking. Therefore, we evaluated scar quality and its predictors in children with burns 5-7 years after injury. Parents of children with mild/intermediate burns (≤10% total body surface area burned), and of children with severe burns (>10% burned) completed the patient scale of the Patient and Observer Scar Assessment Scale (POSAS 2.0) for their children's-in their opinion-worst scar 5-7 years post-burn. Outcomes and predictive factors of scar quality were studied, and, for children with severe burns, POSAS parent scores were compared with observer scores. We included 103 children with mild/intermediate burns and 28 with severe burns (response rate: 51%). Most children (87%) had scars that differed from normal skin, with most differences reported for colour, and least for pain. Except for colour, children with severe burns had significantly higher scores (difference 0-2 points) on all scar characteristics (representing poorer scar quality) compared with children with mild/intermediate burns. Parent POSAS scores were on average 2.0-2.6 points higher compared to observer scores. Number of surgeries predicted both the mean POSAS and the mean overall opinion of a scar. In conclusion, 5-7 years post-burn, the scar of the majority of children differed from normal skin, especially on the characteristic colour. The uncovered insights are useful in counselling of children and their parents on expectations of the final outcome of their (children's) scar(s), and help in further targeting scar prevention strategies for the individual child.

Effectiveness of topical silicone gel and pressure garment therapy for burn scar prevention and management in children 12-months postburn: A parallel group randomised controlled trial

OBJECTIVE

The longer-term effectiveness of silicone and pressure burn scar interventions was evaluated at 12-months postburn.

DESIGN

Parallel group, randomised trial.

SETTING

Hospital outpatient clinics, research centre.

PARTICIPANTS

Children referred for burn scar management following grafted or spontaneously healed acute burn injuries or scar reconstruction surgery.

INTERVENTIONS

Participants were randomised to: (1) topical silicone gel only, (2) pressure garment only, or (3) combined topical silicone gel and pressure garment.

MAIN MEASURES

Primary outcomes were scar thickness (blinded ultrasound measurement) and itch intensity (caregiver proxy-report, numeric rating scale).

RESULTS

Of 153 participants randomised who received the interventions (silicone n = 51, pressure garment n = 49, combined n = 53), 86 were followed-up at 12-months postburn (n = 34, n = 28, n = 24). No differences were identified for the primary outcomes using intention-to-treat analysis. Scar thickness mean difference (95% confidence interval) = 0.00 cm (-0.04, 0.05); -0.03 cm (-0.07, 0.02); 0.03 cm (-0.02, 0.08) and scar itch = 0.09 (-0.88, 1.06); -0.21 (-1.21, 0.79); 0.30 (-0.73, 1.32) for silicone vs pressure; silicone vs combined and combined vs pressure respectively. No serious adverse effects occurred.

CONCLUSION

Similar to short-term results, the combined intervention offered no statistically or clinically significant benefit for improving the primary outcomes compared to each intervention alone. No differences in the primary outcomes were identified between the silicone and pressure alone groups.

Stimulation of toll-like receptor pathways by burn eschar tissue as a possible mechanism for hypertrophic scarring

Hypertrophic scars (HTS) are a common complication following burn injuries with prolonged inflammation. They do not respond well to current treatment options including mechanical, biomolecular and surgical therapies. Toll-like receptor (TLR) 2 and 4 respond to microbes and damaged endogenous ligands to trigger pro-inflammatory pathways, and they are expressed more in HTS fibroblasts compared to normal skin fibroblasts. TLR2 responds to microbial lipoteichoic acid (LTA) while TLR4 responds to microbial lipopolysaccharide (LPS) and endogenous ligands. We investigated the role of burn tissue and small leucine-rich proteoglycans (decorin and biglycan) in the stimulation of TLR2 and TLR4 pathways using cells stably transfected with TLR2 or TLR4 linked to a reporter system. Normal skin (n = 5) was collected post-abdominoplasty, and burn eschar samples (n = 18) were collected from 18 patients between 0 and 14 days post-burn. We found that burn tissue stimulates TLR2 activity significantly more than normal tissue and contains significantly higher levels of LTA. Burn tissue was a stronger stimulator of TLR4 than was normal skin. Burn tissue samples' stimulation of TLR4 and TLR2 correlated. The time post-burn (0-14 days) of wound tissue sampling correlated positively but moderately with TLR2 and TLR4 simulation. In comparison to the dose-dependent effects of natural decorin or biglycan on TLR4 activation, their denatured forms exhibited stronger or weaker stimulation, respectively. They were not potent stimulators of TLR2. TLR2 and TLR4 stimulation is not limited to bacteria in wounds and likely involves multiple endogenous damage-associated molecular patterns. Insight into mechanisms of HTS will facilitate the development of future targeted therapies to modify wound progression and provide benefits to patients suffering with HTS and other fibroproliferative disorders.

Outcomes of Early and Intensive Use of a Palm and Digit Extension Orthosis in Young Children After Burn Injury

Burns to the palmar aspect of the hand are prevalent in young children. The development of scar tissue across the flexor surface of the hand combined with the years of growth ahead may result in considerable complications. This study was undertaken to describe outcomes of early and intensive use of a palm and digit extension orthosis with the elbow immobilized at 90° flexion following a palmar hand burn. A retrospective review of 107 children (mean age 18 months [SD 10]) treated at a statewide Pediatric Burns Unit from 2012 to 2016 was performed. Three children (3%) developed contracture during the 24-month study follow-up period. The other 104 children (97%) had full ROM at 24 months or at either the point of discharge or loss to follow-up. Early signs of contracture, defined as loss of full movement or significant banding, developed in 26 children (24%) in the first 9 months after burn. With intensive physiotherapy, 23 children regained full movement by 12 months after burn. Children who did not achieve complete wound healing at 1 month after burn and children with hypertrophic scarring at 2 months after burn were significantly more represented among cases of early signs of contracture (P = .013). When undertaken with regular clinical review, early and intensive use of a palm and digit extension orthosis can maintain full extension of the palm and digits in children after palmar burn.

Patient-reported scar quality of donor-sites following split-skin grafting in burn patients: Long-term results of a prospective cohort study

BACKGROUND

Skin grafting is the current gold standard for treatment of deeper burns. How patients appraise the donor-site scar is poorly investigated. The aim of this study was to evaluate long-term patient-reported quality of donor-site scars after split skin grafting and identify possible predictors.

METHODS

A prospective cohort study was conducted. Patients were included in a Dutch burn centre during one year. Patient-reported quality of donor-site scars and their worst burn scar was assessed at 12 months using the Patient and Observer Scar Assessment Scale (POSAS). Mixed model analyses were used to identify predictors of scar quality.

RESULTS

This study included 115 donor-site scars of 72 patients with a mean TBSA burned of 11.2%. The vast majority of the donor-site scars (84.4%) were rated as having at least minor differences with normal skin (POSAS item score ≥2) on one or more scar characteristics and the overall opinion on 80.9% of the donor-site scars was that they deviated from normal skin 12 months after surgery. The overall opinion on the donor-site scar was 3.2 ± 2.1 vs. 5.1 ± 2.4 on the burn scar. A younger age, female gender, a darker skin type, and location on the lower leg were predictors of reduced donor-site scar quality. In addition, time to re-epithelization was associated with scar quality.

CONCLUSION

This study provided new insights in long-term scar quality of donor-sites. Donor-site scars differed from normal skin in a large part of the population 12 months after surgery. Results of this study can be used to inform patients on the long-term outcomes of their scars and to tailor preventive or therapeutic treatment options.

Early physiotherapy experience with a biodegradable polyurethane dermal substitute: Therapy guidelines for use

OBJECTIVE

The purpose of this study was to investigate and develop range of motion (ROM) and mobilisation guidelines in adult patients where a newly developed synthetic dermal substitute was applied in our adult burn centre.

METHOD

A retrospective case note audit was conducted on the first 20 acute burn injured patients who had a synthetic dermal substitute applied. Data collected included days to commencement of ROM, days to clearance for mobilisation, and joint ROM achieved after dermal substitute application (prior to delamination) and after split skin grafting (SSG) for the elbow, knee and shoulder joints. Scar assessments were completed at 12 months after injury using two scar assessment scales.

RESULTS

Clearance to mobilise occurred at mean 10.4 and 4.9 days after dermal substitute and after skin graft application to lower limbs respectively. ROM commenced at a mean of 9.9 (upper limbs) and 12.7 (lower limbs) days after dermal substitute application. Following skin grafting, ROM commenced at a mean of 6.6 and 6.5 days for upper limbs and lower limbs respectively. Prior to dermal substitute delamination mean flexion at the knee (86.3°), elbow (114.0°) and shoulder (143.4°) was achieved. Mean ROM continued to improve after grafting with knee (133.2°), elbow (126.1°) and shoulder (151.0°) flexion approaching normal ROM in most cases. Mean extension of the elbow (-4.6°) was maintained close to normal levels after skin grafting. There were no recorded instances of knee extension contracture. Patient and Observer Scar Assessment Scale and Matching Assessment of Photographs of Scars scores indicated good cosmetic outcomes with relatively low levels of itch and minimal pain reported at 12 months after injury.

CONCLUSION

A steep learning curve was encountered in providing therapy treatment for patients managed with this relatively new synthetic dermal substitute. Trends indicated that as experience with this new dermal substitute grew, patients progressed toward active therapy earlier. A guideline for therapy treatment has been developed but will continue to be evaluated and adjusted when required.

Lower limb functional status and its determinants in moderate/major burns 3-6 months following injury: A two-center observational study

INTRODUCTION

Severe complications which may cause impaired physical functionoften develops over time following severe burn to the lower extremities. The purpose of this study was to clarify the clinical determinants of lower limb functional status, functional mobility and exercise capacity in moderate/major burns 3-6 months following the injury.

METHODS

The study included 42 patients, 12 with moderate injury and 30 with major injury, aged 19-59 years old. Lower Limb Functional Index was used to determine the lower limb functional status. Functional mobility and exercise capacity were evaluated with the Timed Up and Go test and the 6-min walk test, respectively. Scar quality and kinesiophobia were assessed with the Patient and Observer Scar Assessment Scale (POSAS) and the Tampa Scale for Kinesiophobia, respectively. Active range of motion (ROM) was measured with a universal goniometer.

RESULTS

Significant and independent predictors of lower limb functional status, functional mobility and exercise capacity related to POSAS score, kinesiophobia level, gender, burn severity, the number of operations, the presence of burnsinvolving any of the lower limb joints, knee ROM limitations, limitation in any of the lower limb joint ROMs, comorbidities, and truncal burns (p < 0.05).

CONCLUSIONS

Burn characteristics and clinical evaluations of patients are important determinants of the lower limb functional status, mobility and exercise capacity in burn patients. These predictors should be considered to improve physical functions related to the lower limb when creating a personalized rehabilitation program.

[Suitability of biological acellular dermal matrices as a skin replacement]

INTRODUCTION

 Tissue defects are associated with loss of epidermal and dermal components of the skin. For full-thickness tissue defects, dermal equivalents are useful to enable rapid wound closure. Split-thickness skin grafts are associated with loss of tissue elasticity resulting in scar contractures that can impair joint mobility. Synthetic collagen matrices and allogeneic acellular dermal matrices (ADM) are commercially available and could serve as skin tissue replacement. The aim of this study was to investigate whether ADM of different dermal layers or bioartificial matrices can serve as cutaneous replacement. For this purpose, cellular migration, differentiation and the inflammatory reaction were studied in an established ex vivo skin organ model.

MATERIALS AND METHODS

 Human split-thickness skin grafts were transplanted onto ADM (Epiflex, DIZG, Berlin, Germany), de-epidermized dermis (DED) or an artificial collagen-elastin matrix (Matriderm, Dr. Suwelack, Billerbeck, Germany). Epithelial migration was studied using an established skin culture model at the air-liquid interface. In addition, the effect of tissue from different dermal compartments, e. g. papillar and reticular dermis, on epithelial migration was compared. Epithelial resurfacing and differentiation of matrices as well as the inflammatory reaction were studied using histological, immunohistochemical and biochemical analyses.

RESULTS AND CONCLUSION

 Significantly more epithelial outgrowth area was found on DED (2.54 mm ± 0.43 mm, mean ± SEM) compared to papillary ADM (1.32 mm ± 0.44 mm, p = 0.039), to reticular ADM (no horizontal growth, p < 0.0001) and collagen-elastin matrix (0.78 mm ± 0.11 mm, p = 0.0056) measured by fluorescence microscopy over 10 days presumably due to the presence of pro-migratory basement membrane residues on DED. Reepithelialization was significantly higher (p < 0.002) on papillary dermis compared to ADM of reticular origin. In contrast to the biological matrices, a complete horizontal penetration was found in the macroporous collagen-elastin matrix. Pro-inflammatory mediators varied depending on the human skin donor and matrix. In summary, the biochemical structure of the matrix' surface and its origin influenced the epithelial behaviour with regard to migration, differentiation and inflammatory response.

Topical treatment for facial burns

BACKGROUND

Burn injuries are an important health problem. They occur frequently in the head and neck region. The face is the area central to a person's identity that provides our most expressive means of communication. Topical interventions are currently the cornerstone of treatment of burns to the face.

OBJECTIVES

To assess the effects of topical interventions on wound healing in people with facial burns of any depth.

SEARCH METHODS

In December 2019 we searched the Cochrane Wounds Specialised Register; the Cochrane Central Register of Controlled Trials (CENTRAL); Ovid MEDLINE (including In-Process & Other Non-Indexed Citations); Ovid Embase and EBSCO CINAHL Plus. We also searched clinical trials registries for ongoing and unpublished studies, and scanned reference lists of relevant included studies as well as reviews, meta-analyses and health technology reports to identify additional studies. There were no restrictions with respect to language, date of publication or study setting.

SELECTION CRITERIA

Randomised controlled trials (RCTs) that evaluated the effects of topical treatment for facial burns were eligible for inclusion in this review.

DATA COLLECTION AND ANALYSIS

Two review authors independently performed study selection, data extraction, risk of bias assessment and GRADE assessment of the certainty of the evidence.

MAIN RESULTS

In this first update, we included 12 RCTs, comprising 507 participants. Most trials included adults admitted to specialised burn centres after recent burn injuries. Topical agents included antimicrobial agents (silver sulphadiazine (SSD), Aquacel-Ag, cerium-sulphadiazine, gentamicin cream, mafenide acetate cream, bacitracin), non-antimicrobial agents (Moist Exposed Burn Ointment (MEBO), saline-soaked dressings, skin substitutes (including bioengineered skin substitute (TransCyte), allograft, and xenograft (porcine Xenoderm), and miscellaneous treatments (growth hormone therapy, recombinant human granulocyte-macrophage colony-stimulating factor hydrogel (rhGMCS)), enzymatic debridement, and cream with Helix Aspersa extract). Almost all the evidence included in this review was assessed as low or very low-certainty, often because of high risk of bias due to unclear randomisation procedures (i.e. sequence generation and allocation concealment); lack of blinding of participants, providers and sometimes outcome assessors; and imprecision resulting from few participants, low event rates or both, often in single studies. Topical antimicrobial agents versus topical non-antimicrobial agents There is moderate-certainty evidence that there is probably little or no difference between antimicrobial agents and non-antimicrobial agents (SSD and MEBO) in time to complete wound healing (hazard ratio (HR) 0.84 (95% confidence interval (CI) 0.78 to 1.85, 1 study, 39 participants). Topical antimicrobial agents may make little or no difference to the proportion of wounds completely healed compared with topical non-antimicrobial agents (comparison SSD and MEBO, risk ratio (RR) 0.94, 95% CI 0.68 to 1.29; 1 study, 39 participants; low-certainty evidence). We are uncertain whether there is a difference in wound infection (comparison topical antimicrobial agent (Aquacel-Ag) and MEBO; RR 0.38, 95% CI 0.12 to 1.21; 1 study, 40 participants; very low-certainty evidence). No trials reported change in wound surface area over time or partial wound healing. There is low-certainty evidence for the secondary outcomes scar quality and patient satisfaction. Two studies assessed pain but it was incompletely reported. Topical antimicrobial agents versus other topical antimicrobial agents It is uncertain whether topical antimicrobial agents make any difference in effects as the evidence is low to very low-certainty. For primary outcomes, there is low-certainty evidence for time to partial (i.e. greater than 90%) wound healing (comparison SSD versus cerium SSD: mean difference (MD) -7.10 days, 95% CI -16.43 to 2.23; 1 study, 142 participants). There is very low-certainty evidence regarding whether topical antimicrobial agents make a difference to wound infection (RR 0.73, 95% CI 0.46 to 1.17; 1 study, 15 participants). There is low to very low-certainty evidence for the proportion of facial burns requiring surgery, pain, scar quality, adverse effects and length of hospital stay. Skin substitutes versus topical antimicrobial agents There is low-certainty evidence that a skin substitute may slightly reduce time to partial (i.e. greater than 90%) wound healing, compared with a non-specified antibacterial agent (MD -6.00 days, 95% CI -8.69 to -3.31; 1 study, 34 participants). We are uncertain whether skin substitutes in general make any other difference in effects as the evidence is very low certainty. Outcomes included wound infection, pain, scar quality, adverse effects of treatment and length of hospital stay. Single studies showed contrasting low-certainty evidence. A bioengineered skin substitute may slightly reduce procedural pain (MD -4.00, 95% CI -5.05 to -2.95; 34 participants) and background pain (MD -2.00, 95% CI -3.05 to -0.95; 34 participants) compared with an unspecified antimicrobial agent. In contrast, a biological dressing (porcine Xenoderm) might slightly increase pain in superficial burns (MD 1.20, 95% CI 0.65 to 1.75; 15 participants (30 wounds)) as well as deep partial thickness burns (MD 3.00, 95% CI 2.34 to 3.66; 10 participants (20 wounds)), compared with antimicrobial agents (Physiotulle Ag (Coloplast)). Miscellaneous treatments versus miscellaneous treatments Single studies show low to very low-certainty effects of interventions. Low-certainty evidence shows that MEBO may slightly reduce time to complete wound healing compared with saline soaked dressing (MD -1.7 days, 95% CI -3.32 to -0.08; 40 participants). In addition, a cream containing Helix Aspersa may slightly increase the proportion of wounds completely healed at 14 days compared with MEBO (RR 4.77, 95% CI 1.87 to 12.15; 43 participants). We are uncertain whether any miscellaneous treatment in the included studies makes a difference in effects for the outcomes wound infection, scar quality, pain and patient satisfaction as the evidence is low to very low-certainty.

AUTHORS' CONCLUSIONS

There is mainly low to very low-certainty evidence on the effects of any topical intervention on wound healing in people with facial burns. The number of RCTs in burn care is growing, but the body of evidence is still hampered due to an insufficient number of studies that follow appropriate evidence-based standards of conducting and reporting RCTs.

Evaluation of Patient-Reported Outcomes in Burn Survivors Undergoing Reconstructive Surgery in the Rehabilitative Period

BACKGROUND

Health-related quality of life is decreased in burn survivors, with scars implicated as a cause. The authors aim to characterize the use of reconstructive surgery following hospitalization and determine whether patient-reported outcomes change over time. The authors hypothesized improvement in health-related quality of life following reconstructive surgery.

METHODS

Adult burn survivors undergoing reconstructive surgery within 24 months after injury were extracted from a prospective, longitudinal database from 5 U.S. burn centers (Burn Model System). Surgery was classified by problem as follows: scar, contracture, and open wound. The authors evaluated predictors of surgery using logistic regression. Short Form-12/Veterans RAND 12 health survey outcomes at 6, 12, and 24 months were compared at follow-up intervals and matched with nonoperated participants using propensity score matching.

RESULTS

Three hundred seventy-two of 1359 participants (27.4 percent) underwent one or more reconstructive operation within 24 months of injury. Factors that increased the likelihood of surgery included number of operations during index hospitalization (p < 0.001), hand (p = 0.001) and perineal involvement (p = 0.042), and range-of-motion limitation at discharge (p < 0.001). Compared to the physical component scores of peers who were not operated on, physical component scores increased for participants undergoing scar operations; however, these gains were only significant for those undergoing surgery more than 6 months after injury (p < 0.05). Matched physical component scores showed nonsignificant differences following contracture operations. Mental component scores were unchanged or lower following scar and contracture surgery.

CONCLUSIONS

Participants requiring more operations during index admission were more likely to undergo reconstructive surgery. There were improvements in Short Form-12/Veterans RAND 12 scores for those undergoing scar operations more than 6 months after injury, although contracture operations were not associated with significant differences in Short Form-12/Veterans RAND 12 scores.

Burn scar outcome at six and 12 months after injury in children with partial thickness scalds: Effects of dressing treatment

INTRODUCTION

In line with other researchers in the field of burns' care, we think that research investigating the long-term outcome of scars is largely lacking. As scarring is of the utmost importance to the patient, clinicians who treat burns must aim to find treatments that lead to a good end result. The aim of this study was to study scar outcomes at six and 12 months after injury. It is an extension of a previous randomised controlled trial (RCT) in which two dressings (porcine xenograft and silver foam dressing) were examined with respect to their ability to help heal partial thickness scalds.

METHOD

Children aged six months - six years with acute partial thickness scalds, on the trunk, or extremities, or both, were included. In the previous study, the silver foam was found to have significantly shorter healing times than the xenograft. Children were assessed at six and 12 months after injury for this study, and photographs were taken of the burn site, and both the patient and observer scar assessment scale (POSAS) and the Vancouver scar scale (VSS) were completed and evaluated by blinded observers.

RESULTS

Of the 58 children from the original RCT, 39 returned to the clinic for evaluation of their scars at six months, and 34 at 12 months after injury. There were no differences in POSAS, VSS total scores, or incidence of hypertrophic scarring between the different dressings. Fifteen children were assessed as having hypertrophic scarring, all of whom had healing times that had extended beyond 14 days.

CONCLUSIONS

This study compared burn scarring after two different treatments for burns in children with partial-thickness scalds and the data suggested that neither dressing had a more favourable impact on scar outcome. The conclusion is, however, tempered by the non-return of all the patients to the follow up. However, as anticipated, regardless of the dressing used, longer healing times were associated with higher scar scores (more scarring) and hypertrophic scarring.

A Cultured Autologous Dermo-epidermal Skin Substitute for Full-Thickness Skin Defects: A Phase I, Open, Prospective Clinical Trial in Children

BACKGROUND

The management of deep partial-thickness and full-thickness skin defects remains a significant challenge. Particularly with massive defects, the current standard treatment, split-thickness skin grafting, is fraught with donor-site limitations and unsatisfactory long-term outcomes. A novel, autologous, bioengineered skin substitute was developed to address this problem.

METHODS

To determine whether this skin substitute could safely provide permanent defect coverage, a phase I clinical trial was performed at the University Children's Hospital Zurich. Ten pediatric patients with acute or elective deep partial- or full-thickness skin defects were included. Skin grafts of 49 cm were bioengineered using autologous keratinocytes and fibroblasts isolated from a patient's small skin biopsy specimen (4 cm), incorporated in a collagen hydrogel.

RESULTS

Graft take, epithelialization, infection, adverse events, skin quality, and histology were analyzed. Median graft take at 21 days postoperatively was 78 percent (range, 0 to 100 percent). Healed skin substitutes were stable and skin quality was nearly normal. There were four cases of hematoma leading to partial graft loss. Histology at 3 months revealed a well-stratified epidermis and a dermal compartment comparable to native skin. Mean follow-up duration was 15 months.

CONCLUSIONS

In the first clinical application of this novel skin substitute, safe coverage of skin defects was achieved. Safety and efficacy phase II trials comparing the novel skin substitute to split-thickness skin grafts are ongoing.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, IV.

Effectiveness of topical silicone gel and pressure garment therapy for burn scar prevention and management in children: a randomized controlled trial

Objective:

To determine the effectiveness of silicone and pressure garments (alone and in combination) in children receiving scar management post-burn.

Design:

Multicentre, parallel-group, randomized controlled trial.

Setting:

Hospital outpatient clinics, colocated research centre, or the participant’s home.

Participants:

Children (0–18 years) referred for burn scar management.

Interventions:

Participants were randomized to (1) topical silicone gel only, (2) pressure garment therapy only, or (3) combined topical silicone gel and pressure garment therapy.

Main measures:

Primary outcomes included scar thickness and itch intensity at the primary end-point of six months post-burn injury. The outcome assessor and data analyst were blinded for scar thickness.

Results:

Participants (N = 153; silicone n = 51, pressure n = 49, combined n = 53) had a median (inter-quartile range) age of 4.9 (1.6, 10.2) years and percent total body surface area burn of 1% (0.5%, 3%) and were 65% male. At six months post-burn injury, intention-to-treat analysis identified thinner scars in the silicone (n = 51 scar sites) compared to the combined group (n = 48 scar sites; mean difference (95% confidence interval) = –0.04 cm (–0.07, –0.00), P = 0.05). No other between-group differences were identified for scar thickness or itch intensity at six months post-burn.

Conclusion:

No difference was identified in the effectiveness of silicone and pressure interventions alone. No benefit to a combined silicone and pressure intervention was identified for the prevention and management of abnormal scarring in children at six months post-burn injury, compared to the silicone or pressure interventions alone.

Outcomes of Early Use of an End of Range Axilla Orthotic in Children Following Burn Injury

Scar contracture is a significant complication of burn injury. This study aimed to describe outcomes of early axilla orthotic use at end of range abduction in children, following a burn to the axilla region. A retrospective review of 76 children (mean age 3.9 years [SD 3.6]) treated at a tertiary children's hospital from 2006 to 2016 was conducted. No child developed axilla contracture for the duration of the 2-year study follow-up with no adverse events recorded. If orthotic use was ceased <60 days post-burn, it was considered not an essential intervention to maintain range of movement, leaving 49 children using the orthotic ≥60 days. Compared with the children who ceased orthotic use in <60 days, children who required the orthotic ≥60 days had a significantly higher frequency of deep-dermal burn (59 vs 25%, p = .01), flame mechanism (25 vs 5%, p = .03), and burn injury distribution involving the anterior trunk, flank, and arm (18 vs 3%, p = .03). Early signs of contracture, considered loss of full axilla range or significant banding, developed in nine children within 3 months post-burn. With intensive therapy, all returned to full axilla range by 9 months post-burn. Children with skin tension at end of range shoulder movement at the 1-month clinical assessment were 11 times more likely to develop early signs of contracture (95% confidence interval [CI]: 1.9-62.1, p = .007). Intensive orthotic use at end of range shoulder abduction in children with axilla burns is well tolerated. When undertaken with ongoing therapist review, full axilla range can be maintained.

Patterns and predictors of burn scar outcome in the first 12 months after burn: The patient's perspective

OBJECTIVE

This study aimed to provide insight into the patterns and factors that predict burn scar outcomes at 3, 6 and 12 months after burn.

METHODS

The Patient and Observer Scar Assessment Scale (POSAS) was used to assess the scar formation of each patient. Structural equation modelling was used. The predictor variables used in this study were sex, three age categories, TBSA, depth of the wound and cause of the burn.

RESULTS

The POSAS patient total and individual item scores demonstrated a statistically significant decrease in the first 12 months after burn, except for the relief item. Male patients had a lower total and items scores (better scar quality) for pain and pruritus compared with female patients. Full thickness burns had a higher scores for pruritus, pliability, thickness and relief compared to the partial-thickness burns. Ages younger than 5 years, higher TBSA values and flame burns were predictors of various POSAS items at 3 and 6 months after burn.

CONCLUSION

The POSAS patient total and individual item scores demonstrated a statistically significant improvement in the scar quality in the first 12 months after burn, except for the relief. Sex, age, depth of the wound, the percentage of TBSA and flame burns were predictors of various POSAS patient items at 3, 6 and 12 months after burn.

The longitudinal validity, reproducibility and responsiveness of the Brisbane Burn Scar Impact Profile (caregiver report for young children version) for measuring health-related quality of life in children with burn scars

BACKGROUND

The measurement of health-related quality of life (HRQoL) provides information about the perceived burden of the health condition and treatments from a lived experience. The Brisbane Burn Scar Impact Profile (caregiver report for young children, BBSIP^0-8), developed in 2013, is a proxy-report measure of burn scar-specific HRQoL. The aim of this study was to report its psychometric properties in line with an evaluative purpose.

METHODS

Caregivers of children up to 8 years of age at risk of burn scarring were recruited into a prospective, longitudinal cohort study. Caregivers completed the BBSIP^0-8, Pediatric Quality of Life Inventory and Patient Observer Scar Assessment Scale at baseline (approximately ≥85% of the total body surface area re-epithelialised), 1-2 weeks after baseline and 1-month after baseline. Psychometric properties measured included internal consistency, test-retest reliability, validity and responsiveness.

RESULTS

Eighty-six caregivers of mostly male children (55%), of a median age (IQR) of 1 year, 10 months (2 years, 1 month) and total body surface area burn of 1.5% (3.0%) were recruited. Over one third of participants were grafted and 15% had contractures or skin tightness at baseline. Internal consistency of ten item groups ranged from 0.73 to 0.96. Hypothesised correlations of changes in the BBSIP^0-8 items with changes in criterion measures supported longitudinal validity (ρ ranging from -0.73 to 0.68). The majority of item groups had acceptable reproducibility (ICC = 0.65-0.83). The responsiveness of five item groups was supported (AUC = 0.71-0.90).

CONCLUSION

The psychometric properties tested support the use of the BBSIP^0-8 as an evaluative measure of burn scar-related health-related quality of life for children aged below eight years in the early post-acute period of rehabilitation. Further investigation at longer time period after burn injury is indicated.