EVOLIS TOTAL KNEE SYSTEM
Device Facts
| Record ID | K081023 |
|---|---|
| Device Name | EVOLIS TOTAL KNEE SYSTEM |
| Applicant | Medacta International S.A. |
| Product Code | JWH · Orthopedic |
| Decision Date | Oct 22, 2008 |
| Decision | SESE |
| Submission Type | Traditional |
| Regulation | 21 CFR 888.3560 |
| Device Class | Class 2 |
| Attributes | Therapeutic |
Indications for Use
The Evolis Total Knee System is designed for cemented use in total knee arthroplasty, if there is evidence of sufficient sound bone to seat and support the components. This knee replacement system is indicated in the following cases: - Severely painful and/or disabled joint as a result of arthritis, traumatic arthritis, rheumatoid arthritis or polyarthritis - avascular necrosis of femoral condyle - post traumatic loss of joint configuration - primary implantation failure.
Device Story
Evolis Total Knee System is a tricompartmental fixed-bearing total knee prosthesis. Components include femoral, patellar, and tibial parts with ultrahigh molecular weight polyethylene (UHMWPE) articular inserts. Femoral components and tibial baseplates available in multiple sizes, with optional plasma spray titanium coating. Tibial inserts provided in standard, posterior-stabilized, and ultra-congruent styles. Patellar components include inset and resurfacing options. Device is intended for cemented implantation in total knee arthroplasty procedures performed by orthopedic surgeons in clinical settings. System replaces damaged joint surfaces to alleviate pain and restore function in patients with severe arthritis or joint failure.
Clinical Evidence
No clinical data provided. Substantial equivalence is supported by bench testing conducted in accordance with international standards and FDA guidance documents. Design verification testing on worst-case component sizes and designs met all pre-defined acceptance criteria.
Technological Characteristics
Tricompartmental fixed-bearing knee prosthesis. Materials: Metal (likely cobalt-chrome or titanium alloy) and ultrahigh molecular weight polyethylene (UHMWPE). Optional plasma spray titanium coating. Components: Femoral, patellar, and tibial baseplates; UHMWPE articular inserts. Dimensions: 6 femoral/tibial sizes, 5 insert thicknesses (9-19mm). Cemented fixation. Sterilization method not specified.
Indications for Use
Indicated for patients requiring total knee arthroplasty due to severe pain or disability from arthritis (traumatic, rheumatoid, or polyarthritis), avascular necrosis of the femoral condyle, post-traumatic joint configuration loss, or primary implantation failure. Requires sufficient sound bone for component seating/support. For cemented use.
Regulatory Classification
Identification
A knee joint patellofemorotibial polymer/metal/polymer semi-constrained cemented prosthesis is a device intended to be implanted to replace a knee joint. The device limits translation and rotation in one or more planes via the geometry of its articulating surfaces. It has no linkage across-the-joint. This generic type of device includes prostheses that have a femoral component made of alloys, such as cobalt-chromium-molybdenum, and a tibial component or components and a retropatellar resurfacing component made of ultra-high molecular weight polyethylene. This generic type of device is limited to those prostheses intended for use with bone cement (§ 888.3027).
Predicate Devices
- NexGen® Prolong All-Poly Patella (K072281)
- NexGen® Complete Knee Solution LPS-Flex Porous Femoral Component (K072619)
- Search Evolution (LC) Total Knee System (K070981)
- NexGen® Complete Knee Solution Ultracongruent (UC-Flex) Fixed Bearing Articular Surface Component (K060722)
- NexGen® Porous, Uncemented Femoral and Tibial Baseplate Components (K031061)
- NexGen® Complete Knee Solution Legacy® Posterior Stabilized (LPS), LPS-Flex Fixed Bearing Femoral and Articular Surface Components (K991581)
- NexGen® Complete Knee Solution Fluted Stemmed Tibial Component (K963148)
- NexGen® Legacy PS (L-PS) and NexGen® CCK (K960279)
- NexGen® Total Knee Solution 9 mm Tibial Articular Surface (K951185)