Table 5.

Comparison of effect of joint gap or laxity on clinical results from past and current studies

Study	Findings	Number of knees	Followup (years)
Kuster et al. [15]	Varus and valgus laxity between 4° and 8° on either side in 20° flexion improved patient satisfaction, ROM without deleterious short- to mid-term effects	44	4.5 (range, 2–7)
Matsuda et al. [17]	Coronal laxity, especially balanced laxity, is important for achieving improved ROM in mobile-bearing TKAs	80	1
Matsumoto et al. [18]	Joint gap change value (135°–90°) by reducing patellofemoral joint showed positive correlation with postoperative knee flexion angle	25	2
Asano et al. [2]	The extension deficit became larger with an increase of soft tissue tension	64	1
Current study	Clinical gaps at 120° and 135° had positive correlations with postoperative flexion angle, whereas clinical gaps at 10° showed a positive correlation with postoperative extension angle; well-balanced knees did not show better clinical results	63	2.3 (range, 2–3)