Abstract:Effective therapy for chronic radiation injuries such as ulcer, prone to infection and stiffness are expected. As the therapeutic radiation is often involve wider and deeper tissues and often require extensive debridement and reconstruction, which are not sometimes appropriate for elderly and compromised hosts.Autologous adipose-derived regenerative cells (ADRCs) are highly yielding form relatively elderly aged consecutive 10 cases, 63.6 ± 14.9 years (52 to 89 years), with mean radiation dose of 75.0 ± 35.4 Gy (50 to 120 Gy) were included with at least 10-month follow-ups. Minimal debridement and ADRC injection in the wound bed and margin along with injection of mixture of fat and ADRCs in the periphery were tested for efficacy and regenerated tissue quality by clinically as well as imaging by CT and MRI.Uncultured ADRCs of 1.6 ± 1.3 × 10 7 cells were obtained. All cases healed uneventfully after 6.6 ± 3.2 weeks (2 to 10 weeks) post-operatively. The done site morbidity was negligible and no major complications such as paralysis or massive hematoma. The regenerated tissue quality was significantly superior to the pre-operatively and the mixture of fat and ADRCs connected to the intact tissue demonstrated very soft and pliable quality. Mean follow-up at 1.9 ± 0.8 years (0.9 to 2.9 years) revealed no recurrence or new ulceration after treatment. Thus, the ADRC s treatment for decades-long radiation injuries is effective, safe and improves the quality of wounds.