LCS total knee arthroplasty was used in many nations worldwide. This implant's features are not only mobile bearing but also has very unique concepts of mechanism. Meniscal bearing (MB) is a one of the types of implant. 2 separate bearings move on the tibia plate. This implant has been known to need revision in cases of over ten years. F.F. Buechel1) reported a 5% revision rate at an average of 10.1 years. On the other hand, another type of implant, which is a rotating platform bearing LCS, had only 1.2% at an average of 9.9 years. We used the meniscal bearing type LCS (MB-LCS) 289 knees from May 1995 to Dec. 2005. All cases were supervised by chief surgeon Makoto Kobori. He reported on the long term follow up of LCS until 2006. There were 18 cases revision of the MB-LCS (revision rate 6%) and in all cases only the meniscal bearings were replaced.2) We followed further until April 2014.Introduction
Patients and Methods
