“…In recent years, ORC powder has been used as an absorbable hemostatic agent in different clinical fields, including neurosurgery, thoracic surgery, general surgery, urologic surgery, and gynecologic surgery [ 7 ]. Although there is a report on the hemostatic effect and safety of the fiber form of ORC in TKA surgery, few studies have reported on its powder form [ 8 ]. The powder form of ORC remains a concern for its inability to remove excessive foreign bodies, while its fiber form is notably easy to remove after hemostatic use.…”