SALTZMAN, Charles,BURSTEIN, Albert H.,DELAND, Jonathan T.
申请号：
AU2018322380
公开号：
AU2018322380A1
申请日:
2018.08.24
申请国别(地区):
AU
年份:
2020
代理人:
摘要：
An ankle arthroplasty system (100) may have a talar prosthesis (102) and a tibial prosthesis (104), each of which has an articular surface (110, 120) and a bone engagement surface (112, 122). Each bone engagement surface may have an anterior-posterior curvature and a medial-lateral curvature with a convex shape. A burr (610, 800, 830, 860) with a rotatable cutting element (720, 820, 850, 880) may be used to form a prepared surface on the talus or the tibia to receive the corresponding prosthesis. A cutting guide may be used to guide motion of the burr； the cutting guide may include a base and an arm movably coupled to the base. One of the base and the arm may have a guide surface, and the other may have a follower that slides along the guide surface to constrain motion of the burr such that the prepared surface has at least one concave curvature and one convex curvature.
