☆ 4.3 Article

Satisfactory results at 8 years mean follow-up after ADVANCE® medial-pivot total knee arthroplasty

KNEE (2014)

Journal

KNEE

Volume 21, Issue 2, Pages 387-390

Publisher

ELSEVIER SCIENCE BV

DOI: 10.1016/j.knee.2013.10.005

Keywords

Medial Pivot; Total knee arthroplasty; Clinical and radiological result; Complication; Mid-term results

Categories

Orthopedics Sport Sciences Surgery

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Abstract

Background: Although good overall results have been reported with TKA, certain problems and limitations remain, primarily due to postoperative differences in joint kinematics, when compared with the normal knee. ADVANCE Medial-Pivot TKA involves replicating the medial pivoting behavior observed in normal knees. Here, we aimed to investigate the clinical and radiological results and complications of TKA using this implant, at mid-term follow-up. Methods: From January 2001 to March 2012, we retrospectively selected 76 patients (85 knees; mean age at operation, 70.2 +/- 8.1 years; range, 51-88 years) with a mean follow-up period of 93.1 +/- 14.3 months (range, 72-132 months). Indications for TKA included primary degenerative osteoarthritis (60 knees), rheumatoid arthritis (22 knees), osteonecrosis (two knees), and osteoarthritis following high tibial osteotomy (one knee). The clinical and radiographic results were evaluated. Results: Kaplan-Meier survivorship analysis indicated a success rate of 98.3% (95% confidence interval, 96.6-99.9%). Comparison of pre- and postoperative knee extension angles and ranges of motion showed significant improvement postoperatively, in both the Knee Society Scores (KSS) and Knee Society Functional Scores (KSFS) (p < 0.05). In one case, radiographic assessment indicated implant loosening due to infection; however, despite this complication, significant improvement of postoperative varus or valgus deformity angles were noted in all cases (p < 0.05). Conclusion: Patients undergoing ADVANCE Medial-Pivot TKA achieved excellent clinical and radiographic results without any implant-related failures at mid-term follow-up. (c) 2013 Elsevier B.V. All rights reserved.

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