Abstract:Objective To assess the therapeutic efficacy of staged excision surgery for medium to large and giant hypertrophic scars and analyze factors influencing recurrence, aiming to provide evidence for optimal treatment modalities and recurrence evaluation.Methods We conducted follow-up on 101 patients with medium to large and giant hypertrophic scars who underwent staged excision surgery at Peking University First Hospital between January 2016 and December 2020 (follow-up duration ≥ 18 months). We collected data on clinical characteristics, treatment protocols, treatment outcomes, and adverse reactions. Single-factor and multiple-factor logistic regression analyses were performed to screen for factors influencing recurrence.Results Among the patients with medium to large and giant hypertrophic scars, 26 cases (25.8%) experienced postoperative recurrence, all within 1 year after surgery. The mean time to recurrence was (5.70 ± 3.80) months. A history of failed prior surgical treatment [O^R = 14.509 (95% CI: 1.908, 110.327) ] was identified as a risk factor for hypertrophic scar recurrence (P <0.05), whereas low-tension anatomical locations (e.g., ears/face and neck) [O^R = 0.089 (95% CI: 0.009, 0.919) ] and postoperative radiotherapy [O^R = 0.161 (95% CI: 0.053, 0.484) ] were protective factors against recurrence (P <0.05).Conclusion Staged excision surgery combined with local radiotherapy within 24 hours postoperatively demonstrates excellent control efficacy and safety for medium to large and giant hypertrophic scars. A history of failed prior surgical treatment, the absence of postoperative adjuvant local radiotherapy, and high-tension anatomical sites (excluding the ears/face and neck) are associated factors in hypertrophic scar recurrence.