Cemented rotating-platform total knee replacement. A nine to twelve-year follow-up study

Area of Science:

• Orthopedic Surgery
• Biomaterials Engineering
• Medical Device Technology

Background:

• Limited long-term clinical and radiographic data exist for the LCS rotating-platform mobile-bearing knee replacement.
• This study addresses the need for intermediate to long-term outcome data on this widely used total knee arthroplasty device.

Purpose of the Study:

• To evaluate the nine to twelve-year clinical and radiographic results of the LCS rotating-platform mobile-bearing knee replacement.
• To assess the durability and performance of this specific total knee arthroplasty system over an extended follow-up period.

Main Methods:

• A consecutive series of 119 primary total knee arthroplasties were performed using LCS rotating-platform components and cemented fixation.
• Patients underwent clinical assessment and radiographic analysis at a nine to twelve-year follow-up interval.
• The study included 86 patients (119 knees), with a mean age of 70 years at surgery.

Main Results:

• At nine to twelve years, no reoperations or dislocations occurred in the 114 knees with known outcomes.
• Significant improvements in Knee Society and Hospital for Special Surgery ratings were observed postoperatively.
• Average knee flexion improved to 102 degrees, with no periprosthetic osteolysis or loosening noted on radiographs.

Conclusions:

• The cemented LCS rotating-platform knee replacement exhibits favorable clinical and radiographic performance at nine to twelve years.
• The device demonstrates durable results, supporting its use in primary total knee replacement.
• Long-term follow-up confirms the reliability and effectiveness of this mobile-bearing knee prosthesis.