Dental and skeletal changes during pressure garment use in facial burns: a systematic review

OBJECTIVE: Concern exists regarding the combined effect of the burn itself in addition to the continuous use of the pressure garments on craniofacial structures. The purpose of this systematic review was to evaluate the available evidence regarding dental and skeletal changes produced during pressure garment use in facial burns. METHODS: Several electronic databases were screened for relevant articles and reference lists of pertinent articles were also hand-searched. RESULTS: Only a two-part study had the minimal set of criteria sought. They found that children with partial face burns had only a slightly reduced inferior growth of the mandible and an increase protrusion of anterior teeth, which stay unchanged even after discontinuation of the pressure garment. The group of children with total face burns showed changes in the direction of the growth of the mandible, from a normal anterior inferior direction to a more inferior direction, and in the maxillary horizontal growth. A trend of returning toward normality was found thereafter. CONCLUSIONS: There is scarcity of studies reporting dentomaxillofacial effects after pressure garment use in facial burns. The level of evidence presented in these articles does not give support to any strong conclusion regarding the craniofacial effects of facial burn management.     

What is the prevalence of hypertrophic scarring following burns?

Hypertrophic scarring after burns remains a major problem and is considered to be "common". Pressure garments are commonly used as treatment even though there is little sound data that they reduce the prevalence or magnitude of the scarring. In 1999 we began a study of the efficacy of pressure garments on forearm burns. After studying 30 patients, mainly white adults, we found no hypertrophic scar in either those treated with pressure or without. This prompted us to review the literature on the prevalence of hypertrophic scarring after burns and found only four articles with a relatively small number of patients and only three geographical locations. It became clear that the prevalence of hypertrophic scarring is really unknown. We then did a retrospective study of 110 burn survivors and counted all hypertrophic scars of all sizes and locations in all races and found the prevalence hypertrophic scarring to be 67% which conflicts with the published reports and our prospective study and suggests that further research is necessary. We concluded that a worldwide, prospective survey is necessary to establish the prevalence of hypertrophic scarring after burns. In this article we are calling for and offering to organize this survey.     

Pressure by design: How to improve the consistency of pressure garments in the clinical environment and implement a simple method for gathering evidence to establish efficacy

Pressure garments are used to treat scars after major trauma including burns. However, the ideal pressure for treatment is not known. Pressures exerted are not routinely measured and garments exert a wide range of pressures. Therefore, current treatment and its efficacy are variable.Pressure Garment Design Tools were introduced in 2012 but their application in hospitals has not been reported. A Garment Dimension and Pressure Calculator was used to audit pressures delivered by 8 pressure garments made for children using the hospital department’s standard reduction factor. The tool was easy to use and showed that pressures exerted by standard garments ranged from 15 to 54 mmHg with highest pressures exerted on wrists.Results of our pilot study indicated that the Garment Dimension and Pressure Calculator was slightly quicker to use than our normal manual process for calculating garment dimensions and enabled easy auditing of past treatment. The Pressure Garment Design Tool was easy to use and calculated garments that exerted the mean target pressures of 15 mmHg and 25 mmHg, improving consistency.Pressures exerted by garments were difficult and time consuming to measure with the Picopress sensor. Pressure was not distributed evenly around the limbs and measurements were inaccurate on the smallest limbs.     

Reproducibility of repeated measurements with the Kikuhime pressure sensor under pressure garments in burn scar treatment

This study investigated the reproducibility of repeated measurements with the Kikuhime pressure sensor under two different types of pressure garments used in the treatment and prevention of scars after burns. Also efficiency of garments was assessed in clinical circumstances by assessing pressure loss and residual pressure after 1 month. Intra- and inter-observer reproducibility and repeated measurements with 1-month time lapse were examined on 55 sites in 26 subjects by means of intra-class correlation coefficients and standard error of measurements. Results showed good to excellent ICC and low SEMs in the two conditions. There was a significant difference in pressure after 1 month between elastic tricot and weft knit garments, although evolution of pressure loss after 1 month was similar. Concerning different locations, there was a significant difference in pressure loss after 1 month between gloves and sleeves with the largest pressure loss for sleeves. Considering these results we concluded that the Kikuhime pressure sensor provides valid and reliable information and can be used in comparative clinical trials to evaluate pressure garments used in burn scar treatment. Secondly, elastic tricot garments in our study tended to have higher clinical pressures but both types of garments had similar pressure loss over time.     

The treatment of nonburn hypertrophyic scars using a custom fitted facemask

Facial hypertrophic scarring is certainly not an uncommon event and can lead to significant aesthetic and functional problems. Its etiologies can range from thermal burns, facial trauma, infectious diseases, congenital deformities or tumor ablation. Many have described the prevention and treatment of hypertrophic scars, all with varying degrees of success. Using a form of pressure therapy, the custom fitted transparent facemask allows for precise determination of critical pressure areas and is cosmetically acceptable to patients. We have utilized this non-invasive modality in plastic surgery for the treatment of non-burn hypertrophic scars and have met with uniform success and patient acceptability. Received: 25 February 1998 / Accepted: 22 June 1998     

Pressure garment design tool to monitor exerted pressures

Pressure garments are used in the treatment of hypertrophic scarring following serious burns. The use of pressure garments is believed to hasten the maturation process, reduce pruritus associated with immature hypertrophic scars and prevent the formation of contractures over flexor joints. Pressure garments are normally made to measure for individual patients from elastic fabrics and are worn continuously for up to 2 years or until scar maturation. There are 2 methods of constructing pressure garments. The most common method, called the Reduction Factor method, involves reducing the patient's circumferential measurements by a certain percentage. The second method uses the Laplace Law to calculate the dimensions of pressure garments based on the circumferential measurements of the patient and the tension profile of the fabric. The Laplace Law method is complicated to utilise manually and no design tool is currently available to aid this process. This paper presents the development and suggested use of 2 new pressure garment design tools that will aid pressure garment design using the Reduction Factor and Laplace Law methods. Both tools calculate the pressure garment dimensions and the mean pressure that will be exerted around the body at each measurement point. Monitoring the pressures exerted by pressure garments and noting the clinical outcome would enable clinicians to build an understanding of the implications of particular pressures on scar outcome, maturation times and patient compliance rates. Once the optimum pressure for particular treatments is known, the Laplace Law method described in this paper can be used to deliver those average pressures to all patients. This paper also presents the results of a small scale audit of measurements taken for the fabrication of pressure garments in two UK hospitals. This audit highlights the wide range of pressures that are exerted using the Reduction Factor method and that manual pattern ‘smoothing’ can dramatically change the actual Reduction Factors used.     

Pressure treatment for hypertrophic scars resulting from burns

Apart from unsightliness, hypertrophic scars resulting from burns cause functional disturbances, which can be minor, like itchiness, tenderness, blistering and skin-pits, or major, like contractures.

Since 1976, the Plastic Surgery Department of the Princess Margaret Hospital, Hong Kong, has been treating this condition with pressure garments. This project is jointly run by the Plastic Surgery Unit and the Occupational Therapy Department of the hospital. The pressure garments are all locally made in the Occupational Therapy Department and all the patients are assessed and examined for progress in a joint clinic run simultaneously by the surgeons and the therapists.

Over 100 patients have been treated for periods of from 6 months to 1 1/2 years. Those who have completed their treatment are analysed. Results range through excellent, good, fair and poor. The incidences of various grades of results and the factors influencing them are discussed.     

Results of early excision and grafting in hand burns

A total of 658 admissions to the Burns Unit at the Royal Brisbane Hospital were reviewed over a 4-year period. During this time, 73 hand burns were treated. The policies of the Burns Unit regarding hand burns are detailed; and, where possible, early excision and grafting is performed. The results of these hand burns are discussed and indicate minimal requirements for reconstructive surgery. The most common reconstructive surgery needed was for web space release in 10 patients and excision of hypertrophic scar in 2 patients. It is concluded that early excision and grafting of hand burns is safe and practical, and combined with adequate splinting, exercise and pressure garments, gives good results and lessens hospital stay in patients with relatively small injuries. The duration of stay in hospital in patients with large burns is not due to the treatment of their hand burns, but to their overall large body surface area burnt.     

Total full-thickness skin grafting for treating patients with extensive facial burn injury: A 10-year experience

IntroductionFacial burns are not only a severe burn injury, but result in psychological disturbance. The improvement of the methods of treating facial burns remains topical. The aim of the study was to evaluate the effectiveness of approach based on full-thickness skin autografting for facial burn injuries.MethodsDuring 2000–2019, ninety seven patients with the facial burn were treated in Burn Center. All patient were divided into two groups. The comparative analysis between groups was done.ResultsGroup A was treated with full-thickness skin grafts (42 patients – 43.3%). Since 2010, total full-thickness skin graft was used in 11 patients from Group A. In group B, 55 patients (56.7%) were treated with split-thickness skin grafts, including 9 patients (16.4%) with total split-thickness skin graft transplantation. Total full-thickness skin graft was performed in case of a deep and extensive facial burn and cicatricial deformities. During the long-term period, a positive cosmetic result and the absence of indications for reconstructive operations were noted.ConclusionThe approach of facial burn treatment based on total full-thickness skin graft allows conditions for engraftment and adaptation of autograft, reduces the risk of scar developing and achieves maximum cosmetic results of treatment.     

A semi-rigid transparent face mask in the treatment of postburn hypertrophic scars

Scars, following burns to the face or subsequent skin grafts, can become hypertrophic. The concept of pressure in their treatment is not new. Elastic garments have been popularised and used successfully. However, they have certain limitations. To date, very little reference has been made in the literature to the use of masks. The use of a semi-rigid face mask in the treatment of hypertrophic scars is described. These masks are comfortable to wear, well tolerated and very effective. Case reports are presented and the technique of manufacture detailed.     

Designing pressure garments capable of exerting specific pressures on limbs

Pressure garments have been used prophylactically and to treat hypertrophic scars, resulting from serious burns, since the early 1970s. They are custom-made from elastic fabrics by commercial producers and hospital staff. However, no clear scientifically established method has ever been published for their design and manufacture. Previous work [2] identified the most commonly used fabrics and construction methods for the production of pressure garments by hospital staff in UK burn units. These methods were evaluated by measuring pressures delivered to both cylinder models and to human limbs using I-scan pressure sensors. A new calibration method was developed for the I-scan system to enable measurement of low interface pressures to an accuracy of +/-2.5 mmHg. The effects of cylinder/limb circumference and pressure garment design on the pressures exerted were established. These measurements confirm the limitations of current pressure garment construction methods used in UK hospitals. A new method for designing pressure garments that will exert specific known pressures is proposed and evaluated for human thighs. Evaluation of the proposed design method is ongoing for other body parts.     

Clinical considerations in face transplantation

Severe facial burns cause significant deformities that are technically challenging to treat. Conventional treatments almost always result in poor aesthetic and functional outcomes. This is due to the fact that current treatments cover or replace the delicate anatomical facial tissues with autologus grafts and flaps from remote sites. The recent introduction of clinical composite tissue allotransplantation (CTA) that uses healthy facial tissue transplanted from donors to reconstruct the damaged or non-existing facial tissues with original tissues makes it possible to achieve the best possible functional and aesthetic outcomes in these challenging injuries. The techniques required to perform this procedure, while technically challenging, have been developed over many years and are used routinely in reconstructive surgery. The immunosuppressive regimens necessary to prevent transplanted facial tissue from rejecting (tacrolimus/mycophenolate mofetil/steroid) were developed for and have been used successfully in solid organ transplants for many years. The psychosocial and ethical issues associated with this new treatment have some nuances but generally have many similarities with solid organ and more recently hand transplantation, both of which have been performed clinically for 40 and 10+ years respectively. Herein, we will discuss the technical and immunological aspects of facial tissue transplantation. The psychosocial and ethical issues will be discussed separately in another article in this issue.     

Burns in adults in Zaria, Nigeria

From 1971 to 1981, 245 adults with burn injuries were admitted to the Ahmadu Bello University Hospital, Zaria. The burns were major in 197 patients, moderate in 28 and minor in 20. Socioeconomic factors contributing to the injuries included the use of wood fires for cooking, for warming the body and the dwelling during the cool harmattan season, loose indigenous garments, thatch-roofed huts, petrol hoarding and epileptic seizures. Flame burns exceeded scalds with a high seasonal frequency in both men and women during the harmattan. Scalds occurred predominantly among the women, puerperal hot baths being a major cause. The overall mortality rate of 22 per cent is excessive. General economic development, architectural improvements, proper handling of petrol and kerosene, modification or abandonment of the puerperal ritual of hot baths, the maintenance of chronic epileptics on anticonvulsants and a programme of universal active immunization against tetanus would contribute to the prevention of burns and complications in adults and decrease the mortality rate.     

Epidemiology of hospitalized burn patients in a tertiary care hospital in South India

Background

The epidemiological pattern of burns varies widely in different parts of the world. To suggest effective preventive measures, an insight into the pattern of injury is desirable. However, data on burn victims and outcome is limited from this part of the world.

Methods

This study was conducted in the Department of Surgery, from April 2006 to April 2007. All consecutive patients with major burns admitted for in-hospital treatment during the study period were included in the study. The data collected included age, gender, cause and mode of burns, presence or absence of inhalational injury, facial burns, time delay from burn injury to admission in the hospital, burns depth, total body surface area distribution of burns, associated injuries and co-morbid illness, microbiological profile and outcome. Inhalational injury was assessed by clinical examination as bronchoscopy was not available.

Results

A total of 222 consecutive patients admitted for in-hospital treatment of burn injury were included in the study. 177 patients were adults and 45 were <13 years of age. The female:male ratio was 1.7:1. In adults, 52.5% of burns were due to non-intentional injury and 43.9% were due to self-immolation. In patients <13 years of age, 95.6% of cases were due to non-intentional injury. The mean TBSA was 48.75% and 30.18% of patients had predominantly deep burns. The overall mortality was 60.8%. The predominant organisms colonizing the burn wound were Pseudomonas aeruginosa (81.1%) followed by Acinetobacter species and MRSA. Multivariate logistic regression analysis of factors predicting survival in patients with burn injury showed that TBSA > 30%, age > 20 years, female gender and presence of facial injury were statistically significant as predictors of risk of death.

Conclusions

In patients with burns, total body surface area involvement more than 30%, age more than 20 years, female gender and presence of facial injury are statistically significant, as predictors of poor outcome and risk of death. The strongest association was seen with facial injury, which increased the risk of death by fourfold.     

Pressure garments for use in the treatment of hypertrophic scars--a review of the problems associated with their use

Pressure garments have been the mainstay of hypertrophic scar treatment since the 1970s. However, there are many problems associated with their use. This is the first in a series of papers on pressure garments that will review the literature published to date on the origins of pressure garments for hypertrophic scar treatment and the problems associated with current pressure garment use.     

Flame burns involving kerosene pressure stoves in India

The author has analysed 339 patients with extensive burns admitted to a teaching hospital and found them to be most common in poor socioeconomic groups with low incomes, poor housing and illiteracy. Thermal injuries afflicted 89 per cent of the patients and were generally accidental and occurred in homes with floor-level cooking: chemical and electrical burns (the remaining 11 per cent) were uncommon. Kerosene pressure stove accidents were a common cause of thermal burns and occurred in 65 per cent of the patients. These were reported in both sexes but were 3.5 times more common in females. Mishandling of kerosene pressure stoves was the commonest cause and occurred in 65.7 per cent of the patients and the next most common cause was wearing loose garments. Kerosene pressure stove accidents occurred commonly in the age group 16–35 years and were rare in other age groups. These burns were relatively more extensive, deep and carried a high mortality.     

Resurfacing the burned face

Facial burns cause deformities through the permanent effects of wound contracture and scar hypertrophy; they are related to the depth of the burn. The depth of an acute burn can be accurately ascertained only by observation over a period of time. Facial skin burns that do not heal by three weeks are subject to increasingly permanent deformity with the passage of time. The best defense against wound contraction and hypertrophic scar is early and complete wound closure. Early and late grafting must be completely successful in "take" to avoid unsightly irregular scarring; therefore, the receptor bed must be meticulously prepared for optimal take. Both early and late grafts are patches that flatten normal contour. However, if the skin graft conforms to a position in the facial mosaic (aesthetic unit of the face), or some subunit that is harmonious with normal facial lines, the patch of proper color can give a more aesthetic result. Nonreproducible anatomical structures such as the margins of the lids, lips, and nostrils should be preserved whenever found to be normal or only partially destroyed. To minimize the distorting effects of wound contracture, pressure therapy of the face and neck, as well as the positional splinting of the neck, must be maintained for many months following grafting and epithelialization until the deleterious wound forces abate. Burns of mobile structures, such as lids and lips, do not lend themselves to control by pressure, and frequently must be managed secondarily by first totally removing scarred tissues and then applying thick skin grafts of the best color match.     

Maxillofacial osteotomies for patients with cleft lip and palate

A variety of dental malocclusions may be found in the patient with cleft lip and palate. These range from trivial dental rotation to major dentoskeletal disharmonies. Some of these deformities are intrinsic to the cleft malformation whereas others are secondary deformations resultant from specific management options taken in childhood. In most cases, a combination of orthodontics and orthognathic surgery is necessary to correct the deformity, that is, normalize the dentition, the facial skeleton, and the facial appearance. The timing of intervention, dependent upon the specific problem, is chosen to minimize negative secondary effects. Stability of mobilized and repositioned maxillary segments remains a problem in spite of the use of rigid internal fixation miniplates. The role of bone grafting when miniplates are used is unclear. While it is clear that movement of the maxilla, segmentally or in toto, can correct major dentoskeletal deformities in cleft patients, much remains to be learned regarding the best means of executing such operations.     

Die Behandlung der brandverletzten Hand

Although burn injuries of the hand only account for approximately 2.5–3% of the total body surface area (TBSA), they are of great importance due to functional outcome, appearance and economic aspects. Initial treatment and diagnosis are important factors, which influence the further course of thermal injuries of the hand and which are found in up to 80% of treated burn injuries. Early decision-making is necessary if escharotomy or skin grafting is indicated. After preliminary evaluation and wound management a differentiation between non-surgical and surgical procedures is necessary. In the case of full thickness thermal injuries, debridement and skin grafting should be carried out. Further interdisciplinary management involves different professional groups as surgeons and physical therapists. Fitting pressure garments and treatment of scar formation are integral parts of the successful rehabilitation of hand burns.