Retrospective data collection. The aim of this study is to compare general anesthesia and nerve block anesthesia with respect to the postoperative complications in patients undergoing diabetic leg amputation and having bleeding tendency.

Inclusion Criteria:

1.Adults patients ≥20 years who underwent lower extremity amputation for diabetic foot under general anesthesia or PNB and having coagulopathy in which condition that neuraxial block is contraindicated

Exclusion Criteria:

1. patients with prior surgical history within 1 month
2. combined operation (joint operation)
3. patients who required continuous intravenous administration of vasopressors and/or mechanical ventilation prior to surgery
4. combination of general anesthesia and PNB

Adults patients ≥20 years who underwent lower extremity amputation for diabetic foot under general anesthesia or PNB and having coagulopathy in which condition that neuraxial block is contraindicated