Burns : journal of the International Society for Burn Injuries
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A technique for recording the shape and size of hypertrophic burns scars during conservative treatment is described. This technique is extremely useful not only for an objective assessment of the healing process but also as an adjunctive research method for comparing two or more differing techniques of treatment. ⋯ These cast models can be easily obtained and are very precise. They represent the height, size and general appearance of the scar, so that by taking positive impression models at regular intervals, and combining them with photographic and tonometric evaluations, they help in the evaluation of conservative treatment or in studying the mode of action of treatment.
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The use of cultured epidermal cell sheets has become a recognized method for the coverage of extensive burns. The disadvantages are a long time-lag until the cells are available, the fragility and difficult handling of the grafts, an unpredictable 'take' and extremely high costs. In three patients with deep partial and full skin thickness burns we have applied cultured autologous keratinocytes suspended in fibrin glue. ⋯ The epidermis of the allogeneic overgrafts desquamated within a few days without signs of inflammation, but there are indications that the STS-allograft dermis is at least partly integrated into the new skin and may serve as a scaffold for the grafted cell culture. The fibrin glue matrix seems to give sufficient adherence stability to keratinocytes that are grafted in an actively proliferating state. Further advantages are the easy repetition and application, as well as a reduction in operating time and costs in these severely injured patients.
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Comparative Study
Expansion techniques for skin grafts: comparison between mesh and Meek island (sandwich-) grafts.
In skin grafting operations for patients with extensive burn injuries, mesh techniques are often employed to enlarge the effective surface area covered by autografts. However, substantial strips of autograft are required and the distribution of autograft elements on the wound surface is relatively uneconomical. An alternative technique for expanding autografts, first described by Meek in 1958, makes use of a special dermatome and prefolded gauzes to obtain a regular expansion of autograft squares from small pieces of split skin grafts. ⋯ The maximum distance between the graft elements obtained with the Meek technique was 9 mm, compared to a maximal distance between the strands of the mesh graft of 12 mm. The Meek technique is a useful alternative to mesh grafts when donor sites are limited. Clinical experience suggests that Meek grafts are also particularly suitable for grafting on granulating wounds under poor conditions.
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It is not always possible to effect immediate closure of wounds and patients' wounds are therefore exposed to risks of desiccation and infection. In the Plastic Surgery Department, Zuider Ziekenhuis, Rotterdam, we have used glycerolized allogeneic donor as a biological dressing in four patients; a polytrauma patient with a compound fracture of the left lower leg; a diabetic with necrotizing fasciitis; a patient with a cat bite on the lower leg, infected with Pasteurella multocida, and a child with large congenital naevi. On clinical grounds there are suggestions of a correlation between the degree of contamination and vascularization of the wound bed and graft take. Furthermore, our experience with the sandwich technique after excision of a large congenital naevus was positive.
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A method was developed to inflict standardized scald burns in the New Yorkshire pig. The tissue damage was compared to a standardized contact burn model. On each flank, six localizations were marked in a symmetrical way. ⋯ The tissue damage in the scalds showed an intermingled pattern of intact and damaged collagen. The more severe scald burns showed a structurally intact superficial vascular plexus, in combination with destruction of the deep vascular plexus. Current and new methods of scald treatment can be classified in this standardized animal model.