Knee replacement surgery replaces the injured or worn-out knee joints. The surgery can help ease pain and make the knee work better. One of the most familiarized surgical practices for patients with severe knee arthritis is total knee replacement (TKR), which is also known as Total knee arthroplasty (TKA). The primary difference is whether the implant replaces the entire joint or only a part of it. Both types of implants have merits and demerits on the current clinical practice. The most specific illustration of the implants varies from person to person which highly relies on their individualized diseased and patient’s health condition which also accommodate with their comorbidities which may reject the implants or may also results to metallic sepsis condition. Hence these numerous implants distinguished with their own features, stability (for a period of time) and economy. Physicians selects the implants from the above criteria along with the concern form from the patient. This review article aims to demonstrate the illustration of implants in Osteoarthritis Patients.