Composite tissue allotransplantation and dysregulation in tissue repair and regeneration: a role for mesenchymal stem cells.

Vascularized composite tissue allotransplantation is a rapidly evolving area that has brought technological advances to the forefront of plastic surgery, hand surgery, and transplant biology. Composite tissue allografts (CTAs) may have profound functional, esthetic, and psychological benefits, but carry with them the risks of life-long immunosuppression and the inadequate abilities to monitor and prevent rejection. Allografts may suffer from additional insults further weakening their overall benefits.

A comparison of robotic, laparoscopic, and hand-sewn intestinal sutured anastomoses performed by residents.

Background: Robotic surgery offers all the advantages of laparoscopy with additional increased accuracy. The use of robotic surgery has increased in the past 5 years. It has proven particularly useful in complex surgical procedures such as intracorporeal intestinal anastomosis.

Muscle fragment welding for control of massive presacral bleeding during rectal mobilization: a review of eight cases.

Introduction: Although massive presacral bleeding during rectal mobilization is uncommon, it can rapidly destabilize a patient. Traditional attempts at control include tamponade with pelvic packing and application of sacral thumbtacks. The aim of this review is to describe the anatomic basis of injury and summarize our experience with this challenging problem, with emphasis on the simple, readily available, effective technique of rectus abdominis muscle fragment welding.

Virtual reality: new method of teaching anorectal and pelvic floor anatomy.

Purpose: A clear understanding of the intricate spatial relationships among the structures of the pelvic floor, rectum, and anal canal is essential for the treatment of numerous pathologic conditions. Virtual-reality technology allows improved visualization of three-dimensional structures over conventional media because it supports stereoscopic-vision, viewer-centered perspective, large angles of view, and interactivity. We describe a novel virtual reality-based model designed to teach anorectal and pelvic floor anatomy, pathology, and surgery.