Triathlon PKR is a Partial Knee Resurfacing device that is used in the treatment of knee injuries and osteoarthritis. This device offers the ease of measured resection system and the control of a gap balancing system. This system is superior when compared to traditional systems, sure to make patient care easy for the doctors and a delight for the patients. Triathlon PKR offers superior features such as: 1. It is a fixed bearing unicompartmental device 2. This device uses the patented single radius design 3. It is a unicondylar knee that blends easily with associated devices 4. The system assists a superior bone-preserving approach and eliminates the need to access intramedullary canal 5. The device is designed for excellent ligament balancing and to balance the flexion and extension gaps With the use of triathlon PKR it is possible to quickly return patients to normal activities. the unique design of the device allows for more stable and natural knee motion. This device makes it easy to restore normal physiological ligament tension and knee kinematics throughout the range of motion.