Indocyanine Green Angiography in the Evaluation of Surgical Amputation Level in Patients with Arterial Ulcers Due to Thromboangiitis Obliterans.

: The aim of this study was to evaluate the role of Indocyanine Green Angiography (ICGA) on amputation levels and the wound healing process in patients with thromboangiitis obliterans (TAO) and complex diabetes. : The research was conducted on 26 inpatients, with TAO and lower extremity ulcers, who were treated between November 2019 and September 2021. A retrospective analysis was made of overall health status, wound characteristics, and surgical outcomes. : The patients comprised 88.5% males and 11.5% females, with a mean age of 62.31 years. In 84.6% of the patients evaluated with ICG angiography, the wound healing process was achieved with no complications. Negative and positive correlations were identified between ICG density values and wound healing time, disease-free follow-up time, and ICG full density time. : These findings suggest that ICG angiography may assist in achieving safe surgical margins for patients with TAO. In conclusion, ICG angiography can be considered a valuable predictive tool for assessing tissue perfusion in TAO-related lower extremity ulcers.