Abstract
The objective of this study was to investigate the range of motion (ROM) of the knee before and four years after total knee arthroplasty (TKA) with a mobile or fixed type of platform and to prospectively evaluate whether there was a difference in ligament balance between the platform types. The subjects were 68 patients involving 76 joints. The mobile type was used in 31 joints and fixed type in 45 joints by employing a prospective randomised method. The passive maximum ROM was measured using a goniometer before and four years after surgery. Also, the intraoperative knee ligament balance was measured. The postoperative extension ROM was significantly improved after TKA using a mobile bearing type compared with that employing a fixed bearing type. In TKA using the former, the intraoperative gap difference was not related to the postoperative flexion angle of the knee. However, they were related in TKA using a fixed bearing type, with a positive correlation regarding the flexion gap.
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Higuchi, H., Hatayama, K., Shimizu, M. et al. Relationship between joint gap difference and range of motion in total knee arthroplasty: a prospective randomised study between different platforms. International Orthopaedics (SICOT) 33, 997–1000 (2009). https://doi.org/10.1007/s00264-009-0772-7
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DOI: https://doi.org/10.1007/s00264-009-0772-7