Related Experiment Video
Updated: Apr 17, 2026

An Experimental Human DIEP Flap Model to Investigate Preservation Strategies for Vascularized Composite Allografts and Free Flaps
Published on: December 5, 2025
Paraumbilical perforator flap for soft tissue reconstruction of the forearm
Luke G Gutwein1, Gregory A Merrell1, Kevin R Knox1
1Division of Plastic & Reconstructive Surgery, Department of Surgery, Indiana University, School of Medicine, Indianapolis, IN; Indiana Hand to Shoulder Center, Indianapolis, IN.
Abstract:
Numerous flaps exist for coverage of injuries to the upper extremity, ranging from local, to regional, to free tissue transfer. The choice of flap is dependent on a variety of factors, including patient, functional needs, and depth of injury. The paraumbilical perforator (PUP) flap for upper extremity coverage can offer the benefits and versatility of pedicled and free flaps while avoiding some of the donor-site morbidity and risks of free tissue transfer. We report the indications and management of two clinical cases that exemplify PUP flap application. Technical points of flap harvest, inset, timing of pedicle division, and pertinent anatomy are discussed.

