Cementless LCS rotating-platform knee arthroplasty in patients over 60 years without patella replacement: a mid-term clinical-outcome study.

BACKGROUND

The aim of this prospective paper is to present the results of a cementless LCS rotating-platform artificial knee design without resurfacing of the patella in patients over 60 years of age.

MATERIAL/METHODS: In this prospective series, 234 patients were included with 251 knees. The LCS rotating-platform uncemented design was used in all cases, without replacement of the patella. Thirty-four patients were men and 200 were women. Two hundred three patients were suffering from osteoarthrosis (10 bilateral) and 31 patients (7 bilateral) from rheumatoid arthritis. Seventeen patients had a bilateral procedure. Prophylactic antibiotics and anticoagulants were also instituted to all patients.

RESULTS

Forty-nine patients developed deep vein thrombosis and responded well to the applied 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%. Radiographs of the knees showed good bonding and no signs of radiolucency. The average clinical and functional Knee Society Ratings were 21.07 points and 30.95 points, respectively, preoperatively and 87.95 points and 78.56 points, respectively, at the final follow-up evaluation.

CONCLUSIONS

With an average follow-up of 5.7 years, uncemented LCS rotating-platform knee joint arthroplasty without replacing the patella in patients over 60 years old was found to perform well, with encouraging clinical and radiological results and a survival rate of 98.1%.