ANTIBIOTIC DISPENSING SPACER APPARATUS AND METHOD FOR INFECTED TOTAL KNEE ARTHROPLASTY

A spacer for a knee replacement prosthesis is disclosed. The spacer may have a lower surface with a locking component adapted to interlock with a tibial tray, an upper surface optionally with a tibialpost and a pair of smooth-surfaced and slightly concave condyle support platforms disposed on opposite sides of the tibial post, and a substantially hollow body with an internal reservoir that can befilled with antibiotic material. The reservoir may be accessible from a port on the hollow body that leads into the internal reservoir, and which permits refilling of the reservoir. In some embodiments, the reservoir may be refillable from this port without removal of the spacer from the patient; for example, a percutaneous needle may be inserted into the port. The spacer may dispense antibioticfrom this reservoir to the surrounding area in order to treat an infection. 用于膝关节置换假体的间隔体。所述间隔体可具有：下表面，所述下表面具有适于与胫骨托互锁的锁定部件；上表面，其可选地具有胫骨柱以及设置在胫骨柱的相对两侧上的对表面平滑且略微凹入的髁突支撑平台；以及基本上中空的主体，其具有可以填充抗生素材料的内部储存器。储存器可以从中空主体上的端口进入，该端口通向内部储存器