PURPOSE: Studies have shown that up to 25% of TKA patients are dissatisfied with the implanted knee, even if registry data shows ten-year revision rates below 5%. It has been the question of our study, if it would be possible to identify those patients at risk for dissatisfaction pre-operatively. METHODS: The data of 1,121 consecutive TKA patients with a follow-up between one and six years have been analysed retrospectively. Demographic, radiologic and perioperative variables have been recorded and all patients were asked by questionnaire for satisfaction with the implanted knee. Logistic regression models have been used to identify significant risk factors. RESULTS: The data of 996 patients (89%) were complete, 849 (85.2%) reported satisfaction and 147 (14.8%) dissatisfaction. Patients' satisfaction was independent of the time after operation (p = 0.285). The only factor which influenced patients' satisfaction was the osteoarthritic severity. In comparison to severe arthritis Kellgren Lawrence IV°, the risk for dissatisfaction was 2.556-fold elevated for arthritis grade III° (p < 0.001) and 2.956-fold higher for grade II° (p = 0.001). CONCLUSIONS: Patients suffering from mild or moderate osteoarthritis are at risk for dissatisfaction after TKA. The TKA indication in those patients should therefore be critically proven. Furthermore, to adjust patients' expectations, the elevated dissatisfaction risk in case of mild or moderate osteoarthritis should be included into patients' pre-operative information.
PURPOSE: Studies have shown that up to 25% of TKA patients are dissatisfied with the implanted knee, even if registry data shows ten-year revision rates below 5%. It has been the question of our study, if it would be possible to identify those patients at risk for dissatisfaction pre-operatively. METHODS: The data of 1,121 consecutive TKA patients with a follow-up between one and six years have been analysed retrospectively. Demographic, radiologic and perioperative variables have been recorded and all patients were asked by questionnaire for satisfaction with the implanted knee. Logistic regression models have been used to identify significant risk factors. RESULTS: The data of 996 patients (89%) were complete, 849 (85.2%) reported satisfaction and 147 (14.8%) dissatisfaction. Patients' satisfaction was independent of the time after operation (p = 0.285). The only factor which influenced patients' satisfaction was the osteoarthritic severity. In comparison to severe arthritis Kellgren Lawrence IV°, the risk for dissatisfaction was 2.556-fold elevated for arthritis grade III° (p < 0.001) and 2.956-fold higher for grade II° (p = 0.001). CONCLUSIONS:Patients suffering from mild or moderate osteoarthritis are at risk for dissatisfaction after TKA. The TKA indication in those patients should therefore be critically proven. Furthermore, to adjust patients' expectations, the elevated dissatisfaction risk in case of mild or moderate osteoarthritis should be included into patients' pre-operative information.
Authors: Barton L Wise; David T Felson; Margaret Clancy; Jingbo Niu; Tuhina Neogi; Nancy E Lane; Jean Hietpas; Jeffrey R Curtis; Laurence A Bradley; James C Torner; Yuqing Zhang Journal: J Rheumatol Date: 2011-04-15 Impact factor: 4.666
Authors: J Cushnaghan; J Bennett; I Reading; P Croft; P Byng; K Cox; P Dieppe; D Coggon; C Cooper Journal: Ann Rheum Dis Date: 2008-07-29 Impact factor: 19.103
Authors: Robert B Bourne; Bert M Chesworth; Aileen M Davis; Nizar N Mahomed; Kory D J Charron Journal: Clin Orthop Relat Res Date: 2010-01 Impact factor: 4.176
Authors: Elena Losina; A David Paltiel; Alexander M Weinstein; Edward Yelin; David J Hunter; Stephanie P Chen; Kristina Klara; Lisa G Suter; Daniel H Solomon; Sara A Burbine; Rochelle P Walensky; Jeffrey N Katz Journal: Arthritis Care Res (Hoboken) Date: 2015-02 Impact factor: 4.794
Authors: Alejandro Lizaur-Utrilla; Santiago Gonzalez-Parreño; Francisco A Miralles-Muñoz; Fernando A Lopez-Prats Journal: Knee Surg Sports Traumatol Arthrosc Date: 2015-01-10 Impact factor: 4.342