Investigation of the effect of intraoperative mediolateral stability on postoperative sagittal stability after bi-cruciate stabilized total knee arthroplasty.

Seki, Kazushige; Seki, Toshihiro; Ogasa, Hiroyoshi; Imagama, Takashi; Matsuki, Yuta; Yamazaki, Kazuhiro; Sakai, Takashi · J Orthop · 2020

prospective_cohort · Level II

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Abstract

This study investigated the effect of mediolateral stability on sagittal stability in bi-cruciate stabilized total knee arthroplasty. This study included 59 patients. We intraoperatively assessed the component gap with a joint distraction force of 60 N for each compartment. Immediately after surgery, sagittal stability was assessed using an arthrometer. The intraoperative medial joint laxity at 30° of flexion was significantly correlated with postoperative anteroposterior translation (r = 0.276, p < 0.05). This study demonstrated the effect of intraoperative mediolateral stability effect on postoperative sagittal stability. Improving medial stability may enhance postoperative sagittal stability.

Anatomy