Dündar, A.İPek, D.Kaya, Ş.2025-05-102025-05-1020231128-360210.26355/eurrev_202309_335562-s2.0-85172253917https://doi.org/10.26355/eurrev_202309_33556https://hdl.handle.net/20.500.14720/3288OBJECTIVE: In this retrospective study, we compared the functionality and clinical outcomes of patients with severe varus knees who underwent total knee arthroplasty (TKA) that used prostheses with either a posterior stabilized (PS) design or an ultra-congruent (UC) design. PATIENTS AND METHODS: Primary TKA was performed in 161 patients; the UC device was used in 82 (51%) cases and the PS device in 79 (49%). Preoperatively and at the final follow-up examination, all patients were evaluated by orthoroentgenography. The mechanical axis angle and radiolucent lines were evaluated according to the Knee Society Roentgenographic Evaluation System on preoperative and 5-year follow-up radiographs. Total Knee Society Score (KSS) (knee score/function score) and Visual Analog Scale scores were obtained at the final follow-up examination. Demographic and surgical data and revision rates were evaluated for all patients. RESULTS: Postoperative angle values were significantly decreased in both the UC and PS groups (p<0.001 and p<0.001, respectively). Postoperative flexion range of motion values were significantly increased in both the UC and PS groups (p<0.001 and p<0.001, respectively). The postoperative KSS function scores were not significantly different between the groups (p=0.194). The mean surgical time of the PS group (54.99±4.18 minutes) was significantly higher than that of the UC group (46.02±4.48 minutes) (p<0.001). CONCLUSIONS: No notable differences were found between the UC and PS groups with respect to the clinical and functional parameters examined. Based on these results, UC TKA can be considered a safe alternative to PS TKA in severe varus knees. © 2023 Verduci Editore s.r.l. All rights reserved.eninfo:eu-repo/semantics/closedAccessMobile BearingPosterior Cruciate Ligament (Pcl)Posterior Stabilized (Ps)Total Knee Arthroplasty (Tka)Ultracongruent (Uc) InsertArticle2717Q2Q27968797637750625