Surgical Cases: Partial (Unicompartmental) Knee Replacement

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.

Pre-operative image of a 65-year-old male patient with progressively worsening right-sided knee pain that is localized to the inner aspect of the right knee. The knee X-ray demonstrates a focal area of osteonecrosis with full-thickness cartilage loss in the medial femoral condyle. The remainder of the knee is unaffected. The post-operative image shows the patient has now undergone a right unicompartmental knee replacement. The new partial knee implant resurfaces the damaged medial compartment while leaving the patient’s normal lateral and patellofemoral compartments intact.