The pre-expanded pedicled TDA perforator flap is a suitable alternative for coverage of the axillary defects after the release of the burn contractures. A pliable texture and large size flap can be obtained to transfer to the axillary area and the donor site scar is considered as cosmetically acceptable.
The addition of paracetamol during IVRA with lidocaine decreased tourniquet pain, increased anesthesia quality, and decreased postoperative analgesic consumption.
For individuals who sustain devastating composite tissue loss, vascularized composite allotransplantation (VCA; e.g., hand and face transplantation) has the potential to restore appearance and function of the damaged tissues. As with solid organ transplantation, however, rejection must be controlled by multidrug systemic immunosuppression with substantial side effects. As an alternative therapeutic approach inspired by natural mechanisms the body uses to control inflammation, we developed a system to enrich regulatory T cells (Tregs) in an allograft. Microparticles were engineered to sustainably release TGF-β1, IL-2, and rapamycin, to induce Treg differentiation from naïve T cells. In a rat hindlimb VCA model, local administration of this Treg-inducing system, referred to as TRI-MP, prolonged allograft survival indefinitely without long-term systemic immunosuppression. TRI-MP treatment reduced expression of inflammatory mediators and enhanced expression of Treg-associated cytokines in allograft tissue. TRI-MP also enriched Treg and reduced inflammatory Th1 populations in allograft draining lymph nodes. This local immunotherapy imparted systemic donor-specific tolerance in otherwise immunocompetent rats, as evidenced by acceptance of secondary skin grafts from the hindlimb donor strain and rejection of skin grafts from a third-party donor strain. Ultimately, this therapeutic approach may reduce, or even eliminate, the need for systemic immunosuppression in VCA or solid organ transplantation.
Snakebites are common among the rural population of developing countries. The severity of venomous snakebites depends on several factors, including the location of the bite, the amount of venom injected, and the effectiveness of the initial therapy. Snakebites frequently occur in the extremities with approximately two thirds of envenomations occurring in the upper extremities. In this study, we presented 12 cases of hand reconstruction after Vipera snakebites and discussed how to minimize functional loss and maximize hand rehabilitation. Twelve patients bitten by Vipera between 2001 and 2006 were included in this study. Groin flaps were performed in three cases, full-thickness grafts in two cases, thenar flaps in three cases, and cross finger flaps in three cases. With medical management, spontaneous healing occurred in one case. We prefer to use flaps on the volar site of the hand and, if the bone is not exposed, full-thickness grafts on the dorsal site of the hand. We also recommend starting rehabilitation of the hand early.
Recently, composite tissue allotransplantation was introduced as a potential clinical treatment for complex reconstructive procedures, including tumor ablative operations, traumatic injuries, and extensive tissue loss secondary to burns. Composite tissue allotransplantations consist of heterogeneous tissues including skin, fat, muscle, nerves, lymph nodes, bone, cartilage, ligaments, and bone marrow, all presenting with different antigenicity. Thus, composite tissue allotransplantations are considered to elicit a stronger response compared with solid organ transplants. This article outlines different experimental models and current clinical applications of composite tissue allotransplantation.
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