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Hip Modular Spacer: The Hip Modular Spacer, which consists of a modular head and stem, is indicated for temporary use (maximum 180 days) as an adjunct to total hip replacement (THR) in skeletally mature patients undergoing a two-stage procedure due to a septic process and where gentamicin is the most appropriate antibiotic based on the susceptibility pattern of the infecting micro-organisms. The head and stem components are inserted into the acetabular cavity and femoral medullary canal, respectively, following removal of the existing acetabular and femoral components and radical debridement. The device is intended for use in conjunction with systemic antibiotic therapy (standard treatment approach to an infection). The Hip Modular Spacer is not intended for use for more than 180 days, at which time it must be explanted and a permanent device implanted or another appropriate treatment performed (e.g. resection arthroplasty, fusion etc.). Knee Modular Spacer: The Knee Modular Spacer, which consists of a modular femoral, tibial insert component, is indicated for temporary use (maximum 180 days) as an adjunct to total knee replacement (TKR) in patients undergoing a two-stage procedure due to a septic process and where gentamicin is the most appropriate antibiotic based on the susceptibility pattern of the infecting micro-organism(s). The device is applied on the femoral condyles (femoral component) and on the tibial plate (tibial component) following removal of the existing implant and radical debridement. The use of the tibial insert component is optional, when a large tibial defect is present. The device is intended for use in conjunction with systemic antimicrobial antibiotic therapy (standard treatment approach to an infection). The Knee Modular Spacer is not intended for use for more than 180 days, at which time it must be explanted and a permanent device implanted or another appropriate treatment performed (e.g. resection arthroplasty, fusion etc.). Because of the inherent mechanical limitations of the device materials (gentamicin/polymethylmethacrylate), the device is only indicated for patients who will consistently use traditional mobility assist devices (e.g., crutches, walkers, canes) throughout the implantation period.

The Modular Spacers are sterile, single-use devices intended for temporary use (maximum 180 days) as joint replacements. The Hip Modular Spacer is composed of two components (a head and a stem) that are intended to be used together to form a temporary hip spacer; the components are available in a range of sizes. The Knee Modular Spacer is composed of three independent components (a femoral component, a tibial component and a tibial insert component) that are intended to be used together to form a temporary knee spacer; the components are available in a range of sizes. The devices are made of fully formed polymethylmethacrylate (PMMA), which is radioopaque, and contains gentamicin and color additives to give a green color. The Modular Spacers provide a functional-mechanical mode of action; they provide patients a temporary implant allowing for a natural range of motion and partial weight-bearing during treatment. They are designed to preserve soft tissue to prevent further complications, such as muscular contraction, and to facilitate the subsequent joint replacement procedure.