MISHA Post-Market Clinical Study

Key Inclusion Criteria: 1. Subjects aged 25 to 65 years at time of index procedure 2. Body Mass Index (BMI) of \< 35 3. Activity exacerbated knee pain isolated to the medial compartment and not global in nature 4. WOMAC pain ≥ 40 5. Failed non-operative OA treatment Key Exclusion Criteria: 1. Large medial osteophyte(s) or considerable extruded meniscus that may interfere with the placement or function of the device 2. Poor bone quality (e.g., bony erosion, osteopenia, osteoporosis) 3. Ligamentous instability 4. Active or recent knee infection 5. Inflammatory joint disease, including sequalae of viral infections 6. Suspected or documented allergy or hypersensitivity to cobalt, chromium, nickel or other metals 7. History of keloid, hypertrophic or contracture scaring 8. Propensity for restrictive scar formation or adhesions with prior procedures