PARISI, Raymond C.,RETTIG, Katherine M.,BLAYLOCK, Jeff C.
申请号：
ES11758060
公开号：
ES2631181T3
申请日:
2011.09.09
申请国别(地区):
ES
年份:
2017
代理人:
摘要：
A tibia prosthesis (10) comprising a tibia base plate (12) and a tibia support component (14), wherein the tibia support component (14) comprises: a lower surface (36)； an opposite upper surface (38) defining a lateral articular surface (40) in a lateral portion (39) and a middle articular surface (42) in a middle portion (41)； an anteroposterior axis (AH) disposed between said lateral articular surface (40) and said middle articular surface (42) and extending from an anterior edge to a posterior edge of said tibia support component (14)； and a peripheral wall (54) extending from said lower surface (36) to said upper surface (38), said peripheral wall (54) has a tibial support chamfer (50) extending from a rear middle edge of said upper surface (38) towards said lower surface (36), said tibial support chamfer (50) extending through at least 25% of an available proximal / distal distance between said upper (38) and lower surfaces (36) at said middle rear edge, said tibia support chamfer (50) forms an angle of the acute support chamfer (α) with said lower surface (36) such that said support chamfer (50) extends from proximal and anterior form from said lower surface (36) towards said upper surface (38)； wherein the tibia base plate (12) comprises: a surface (35) that makes contact with the bone； an upper surface (34) of opposite base plate defining a middle compartment (22), a compartment (side 20)； an anteroposterior axis of base plate (AH) disposed between said lateral compartment (20) and said middle compartment (22), said anteroposterior axis of base plate (AH) extending from an anterior edge to a posterior edge of said plate (12 ) tibia base； and a peripheral base plate wall (25) extending from said surface (35) that makes contact with the bone to said upper base plate surface (34), said peripheral base plate wall (25) includes a chamfer (32 ) of base plate extending from a rear portion of said middle compartment (22) to said surface (35) that makes contact with
