Pre-operative image of a 52-year-old female patient with severe right-sided knee pain, localized to the inner aspect of the right knee. The standing knee X-ray demonstrates full-thickness cartilage loss that specifically involves the medial compartment, with an associated varus (bow-legged) deformity. Post-operative image shows the patient has now undergone a right medial unicompartmental knee replacement via robotic-arm assistance, with anatomic component positioning and restoration of the native knee alignment.