Clinical Application of Artificial Dermis and Autologous Skin in Repairing Skin and Soft Tissue Defects of Hands and Feet with Bone Exposure Injuries.

Patients with skin and soft tissue defects are very common. Mild trauma often causes mild skin damage, while severe injuries are often accompanied by bone and tendon exposure, which brings great pain to patients. For the defect of skin and soft tissue, the traditional treatment methods are mostly medium or full-thickness skin or skin flap transplantation. These methods are effective in wound repair, but there are still many problems. In recent years, with the improvement of tissue engineering technology, the use of artificial skin to repair various skin wounds is gradually becoming clinical, and the key technology of skin tissue engineering lies in the development of dermal substitutes. The appearance of artificial dermis not only solves the shortage of autologous skin source but also makes the operation simple and easy. The purpose of this study was to investigate the clinical effect of artificial dermis combined with autologous skin grafts in repairing hand and foot skin and soft tissue defects with bone exposure. The results show that the use of artificial dermis combined with autogenous blade thick skin to treat patients with hand and foot soft tissue injury with bone exposure has a good clinical effect, and the skin is alive and has fewer complications, which is worthy of promotion.

Free second toe one-stage-plasty and transfer for thumb or finger reconstruction.

Free second toe transfer has become a popular method for the management of thumb or finger reconstruction. However, this creates an obvious appearance defect. A new operating procedure has been used since 1999. To enlarge the perimeter of the reconstructed thumb, a composite tissue strip flap from the fibular of great toe pedicled with the fibular proper plantar digital artery, combined or not with the island dorsal index finger flap, was inlaid with the second toe at the same time before the reconstruction. A crescent double-winged dorsal metatarsus flap, connected with second toe, in combination with the partial metatarsal bone, was also used to reconstruct fingers. There were 36 patients in the study group with a follow-up time of 6 months to 3 years. The thumb and finger reconstructed in this way showed better appearance, with normal caliber and length and without obvious adverse affects. This method has ameliorated the embarrassing appearance of the reconstructed thumb with earlier methods and is a relatively ideal method for thumb or finger reconstruction.