Treatment of deep infection of total knee arthroplasty using a two-stage procedure

Operative Orthopädie und Traumatologie
M PietschChristian Wenisch

Abstract

Treatment of deep infection of total knee arthroplasty by two-stage reimplantation. Using an articulating spacer may reduce the disadvantages of a static spacer (ligament contracture, muscle atrophy, muscle contraction, arthrofibrosis, and bone loss). Restoration of pain-free loading and ability to walk. Late deep infection after total knee arthroplasty. infection occurring at least 6 weeks after the initial arthroplasty. Large metaphyseal bony defects of the distal femur and proximal tibia. Missing or insufficient extensor mechanism. The articulating spacer is made intraoperatively by cleaning and autoclaving the explanted femoral component and the tibial polyethylene insert. These components are reinserted by "press-fit cementing" without cement interdigitation into the trabecular bone. The cement is loaded with antibiotic during the same operation (2-4 g antibiotics per 40 g of cement powder). With the articulating spacer in place, partial weight bearing with crutches and continuous passive motion daily up to a flexion of 90 degrees are allowed. Usually, reimplantation with a standard revision system is scheduled for 6-12 weeks after spacer implantation. In a prospective study 33 consecutive patients were treated from Februa...Continue Reading

Citations

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