Exactech's Optetrak knee system has superior wear characteristics, according to the results of laboratory tests which simulated normal walking conditions.
The company said that its knee system, which derives from a strong lineage of clinically proven knees, has also met the test of clinical experience.
Dr Gary Miller, executive vice president for research and development at Exactech, commented: "Despite recent claims of superior performance of new polyethylene technologies, net compression moulded polyethylene remains the gold standard for total knee replacement bearing components.
"It has better wear characteristics than those reported for the new competitive technologies, excellent fracture toughness, and has more than 20 years of peer reviewed, published data demonstrating excellent clinical results."
The US-based firm's orthopaedic products are used to restore joints and bones that have deteriorated as a result of injury or arthritis and are currently used in the US and in over 25 other countries throughout Europe, Asia, Australia and Latin America.
The number of knee replacements more than doubled between 1991 and 2000 and researchers at Bristol University's department of social medicine predict that the procedure will rise by a further 63 per cent by 2010, overtaking hips as the major joint replacement in the UK.