Age stratified, matched comparison of unicompartmental and total knee replacement.

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Abstract

[Indexed for MEDLINE] Conflict of interest statement: Declaration of competing interest The author or one or more of the authors have received or will receive benefits for personal or professional use from a commercial party related directly or indirectly to the subject of this article. The funding source played no role in the design, conduct or interpretation of this study. 5. Int Orthop. 2017 Nov;41(11):2265-2271. doi: 10.1007/s00264-017-3633-9. Epub 2017 Sep 14. Improved joint-line restitution in unicompartmental knee arthroplasty using a robotic-assisted surgical technique. Herry Y(1), Batailler C(1), Lording T(2), Servien E(1), Neyret P(1), Lustig S(3). Author information: (1)Centre Albert-Trillat, CHU Lyon Croix-Rousse, Hospices Civils de Lyon, 69004, Lyon, France. (2)Melbourne Orthopaedic Group, Melbourne, VIC, Australia. (3)Centre Albert-Trillat, CHU Lyon Croix-Rousse, Hospices Civils de Lyon, 69004, Lyon, France. sebastien.lustig@gmail.com. PURPOSE: Joint-line restitution is one objective of unicompartmental knee arthroplasty (UKA). However, the joint line is often lowered when resurfacing femoral implants are used. The aim of this study was to compare the joint-line height in UKA performed by robotic-assisted and conventional techniques. METHODS: This retrospective case-control study compared two matched groups of patients receiving a resurfacing UKA between 2013 and 2016 by either a robotic-assisted (n = 40) or conventional (n = 40) technique. Each group comprised 27 women and 13 menm wuth a mean age of 69 and 68 years, respectively. Indications for surgery were osteoarthritis (n = 35) and condylar osteonecrosis (n = 5). Two validated radiologic measurement methods were used to assess joint-line height. RESULTS: Forty UKA (23 medial and 17 lateral) were analysed in each group. Restitution of joint-line height was significantly improved in the robotic-assisted group compared than the control group: +1.4 mm ±2.6 vs +4.7 mm ± 2.4 (p