The UNI knee has the potential to function and feel more like a normal knee, especially during activity.
The goal is to save ALL of the ligaments in the knee. Ligaments are like small pieces of rope that hold the bones together. The ligaments make the knee feel stable and secure during activity. The knee has 4 ligaments that provide this function, one on each side and two that cross in the middle.
Using special, precision instruments the damaged surfaces are removed. The replacement surfaces are then fixed into place. The surface of the upper bone is replaced with a rounded metal component that comes very close to matching the curve of the natural bone. The surface of the lower bone is replaced with a flat metal component and a slab of ultra-high-molecular weight polyethylene plastic to serve as the cartilage, or the entire component may be plastic.