Prospective, Single-center, Open-label, Pilot Study Using Cryopreserved Umbilical Tissue Containing Viable Cells in the Treatment of Complex Acute and Chronic Wounds.

INTRODUCTION Complex wounds with exposed bone, muscle, tendon, or hardware continue to be a therapeutic challenge for wound care providers. Wounds with exposed structures are more susceptible to infection, necrosis, and amputation. As such, rapid granulation to cover exposed deep tissue structures is essential for patient recovery. OBJECTIVE In this prospective, pilot study, the authors evaluate the clinical outcomes of a cryopreserved umbilical tissue graft containing viable cells (vCUT) in the treatment of complex wounds. MATERIALS AND METHODS Ten patients with 12 wounds each received 1 application of vCUT. Two patients did not complete the study and were removed from the per-protocol population. Data analyses were performed on the remaining 8 patients with 10 wounds. The average wound area was 16.5 cm2 with an average duration of 10 months. Post-application, patients were followed for an additional 4 weeks for granulation, closure, and safety outcomes. RESULTS By the end of the study, 8 of 10 (80.0%) vCUT-treated wounds achieved 100% granulation, and 3 wounds (30.0%) went on to achieve complete closure. The median area reduction was 40.5% and the median volume reduction was 59.4%. CONCLUSIONS The results of this study suggest vCUT in conjunction with standard of care can be a viable treatment option for acute and chronic lower extremity complex wounds.