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Background: The aim of this prospective paper is to present the resultsof a cementless LCS rotating-platform artificial knee design without resurfacing of the patella in patientsover 60 years of age. Material/Methods: In this prospective series, 234 patients were included with 251knees. The LCS rotating-platform uncemented design was used in all cases, without replacement of thepatella. Thirty-four patients were men and 200 were women. Two hundred three patients were sufferingfrom osteoarthrosis (10 bilateral) and 31 patients (7 bilateral) from rheumatoid arthritis. Seventeenpatients had a bilateral procedure. Prophylactic antibiotics and anticoagulants were also institutedto all patients. Results: Forty-nine patients developed deep vein thrombosis and responded well to theapplied conservative treatment. Overall results in the first 251 cementless cases at 2 to 9.8 years'follow-up (average: 5.7 years) were good to excellent in 94.4%, fair in 4.7%, and poor in 0.7%. Radiographsof the knees showed good bonding and no signs of radiolucency. The average clinical and functional KneeSociety Ratings were 21.07 points and 30.95 points, respectively, preoperatively and 87.95 points and78.56 points, respectively, at the final follow-up evaluation. Conclusions: With an average follow-upof 5.7 years, uncemented LCS rotating-platform knee joint arthroplasty without replacing the patellain patients over 60 years old was found to perform well, with encouraging clinical and radiological resultsand a survival rate of 98.1%.