J Korean Orthop Assoc.  2003 Feb;38(1):13-17.

Mobile bearing joint in Total Knee Arthroplasty

• Cho WS
• Park JH
• Hwang WY
• Lee JB
• Shin JM
• Woo JH

Abstract

PURPOSE
To assess the clinical and radiological results of mobile bearing total knee arthroplasty using the LCS system and to analyse complications arising. MATERIALS AND METHODS: From Oct. 1992 to Dec. 1998, 135 cases of total knee arthroplasty was performed using the LCS mobile bearing system. Among those are evaluated 108 cases which were followed up for a mean of 4.8 years (3-9.2 years). Retrospective analysis was done by the clinical and radiological evaluations usinga ROM, tibio-femoral alignment, HSS score and radiological loosening. RESULTS: The preoperative mean HSS score (58.6) was improved to 89.5 at final follow up. Tibio-femoral angle changed from a varus of 3 degrees to a valgus of 5 degrees. Arc of motion was reduced from 121 degrees to 116 degrees in osteoarthritis and increased from 111 degrees to 118 degrees in rheumatoid arthritis. There were 16 cases of osteolysis, but no case provoked clinical problems or more than 4 points in the radiolucent score. Complications were one polyethylene dislocation and one intraoperative tibia plateau fracture. CONCLUSION: Mobile bearing knee system showed excellent and predictable clinical and radiological results at a mean 4.8 years follow-up.

Keyword

Mobile bearing knee; LCS; TKA

MeSH Terms

Arthritis, Rheumatoid
Arthroplasty*
Dislocations
Follow-Up Studies
Joints*
Knee*
Osteoarthritis
Osteolysis
Polyethylene
Retrospective Studies
Tibia
Polyethylene