Overview
Prospective evaluation of the safety and effectiveness of the MISHA Knee System.
The study will collect data on the procedural and long-term adverse events, WOMAC pain and function scores, KSS satisfaction, subsequent surgical interventions, BMI levels, range of motion, UCLA activity level of the subjects, and perform radiographic/x-ray evaluations at clinical visits through 5 years post-procedure.
The primary analysis of this study is freedom from device- and procedure-related SSIs at five (5) years post-implantation.
This study will also assess device performance in subjects with intact and retained devices and subjects with devices removed prior to study termination and freedom from conversion to arthroplasty through 5 years.
Study subjects will be followed over a five-year post-implant period.
Eligibility
Key Inclusion Criteria:
- Subjects aged 25 to 65 years at time of index procedure
- Body Mass Index (BMI) of < 35
- Activity exacerbated knee pain isolated to the medial compartment and not global in nature
- WOMAC pain ≥ 40
- Failed non-operative OA treatment
Key Exclusion Criteria:
- Large medial osteophyte(s) or considerable extruded meniscus that may interfere with the placement or function of the device
- Poor bone quality (e.g., bony erosion, osteopenia, osteoporosis)
- Ligamentous instability
- Active or recent knee infection
- Inflammatory joint disease, including sequalae of viral infections
- Suspected or documented allergy or hypersensitivity to cobalt, chromium, nickel or other metals
- History of keloid, hypertrophic or contracture scaring
- Propensity for restrictive scar formation or adhesions with prior procedures