The intraoperative gap difference (flexion gap minus extension gap) is altered by insertion of the trial femoral component

Capsular release around the intercondylar notch increases the extension gap in posterior-stabilized rotating-platform total knee arthroplasty

“…The optimal gap size should be determined carefully with a femoral trial to prevent an excessive extension gap. These findings are similar to those of previous studies with a moderate-volume cam [7]. However, our observations are limited specifically to rotating-platform PS TKA with a high-volume cam.…”

Midflexion Laxity After Implantation Was Influenced by the Joint Gap Balance Before Implantation in TKA

“…First, the number of patients in this study was much larger than that in the previous reports on joint gap measurement [9,[11][12][13][14]. The results investigating small number of patients might be influenced by the individual variation.…”

The flexion gap preparation does not disturb the modified gap technique in posterior stabilized total knee arthroplasty

“…Sixth, we measured the gap before implantation. Femoral component placement changes the intraoperative soft tissue balance [4]. Even if we make the extension and flexion joint gap distances equal before implantation using modified gap technique, extension and flexion joint gap distances after implantation might not be always equal.…”

“…Preparing equal and rectangular extension and flexion joint gaps is the most important goal in TKA because it facilitates functional restoration of the knee [4,5,7,10,12]. The two methods for gap-balancing include the following steps: (1) initial preparation of the flexion gap followed by matching the width of the extension gap with the width of the flexion gap [11] and (2) initial preparation of the extension gap followed by matching of the width of the flexion gap with the width of the extension gap [8].…”