Antibiotic-dispensing spacer device and method for infected total knee arthroplasty

摘要

Spacer for knee joint replacement prosthesis. The spacer has a lower surface with locking components adapted to connect with the tibial tray, and optionally a tibial post, and a pair of smooth and slightly recessed surfaces, optionally located on opposite sides of the tibial post And a substantially hollow body having an inner reservoir which can be filled with an antibiotic material. The reservoir can be accessed from a port on the hollow body leading into the inner reservoir, and the port allows refilling of the reservoir. In some embodiments, the reservoir may be refillable from this port without removing the spacer from the patient. For example, a percutaneous needle may be inserted into the port. The spacer may dispense antibiotics from this reservoir to the surrounding area to treat the infection. [Selected figure] Figure 3