The superiority between the posterior cruciate-retaining and the posterior cruciate-substituting designs still remains controversial. We performed a prospective, randomized control study for evaluation of the superiority of these designs. This study investigated 58 knees in 29 patients with simultaneous bilateral total knee arthroplasty, in which the high-flex CR design was randomly implanted in one knee and the high-flex PS design was implanted in the other knee. The follow-up duration averaged 5.0 years, with a minimum duration of 3 years. Postoperatively, Knee Score and pain points in Knee Score resulted in no significant differences between the 2 designs. However, postoperative arc of range of motion, patient satisfaction, and posterior knee pain at passive flexion in the PS design were significantly superior to that of the CR design.
The Journal of Arthroplasty, Volume 27, Issue 3, 368 - 374
High-flex Posterior Cruciate-Retaining vs Posterior Cruciate-Substituting Designs in Simultaneous Bilateral Total Knee ArthroplastyYagishita, Kazuyoshi et al.