Optimal Condition to Create Femoral Tunnel Considering Combined Influence of Knee Flexion and Transverse Drill Angle in Anatomical Single-Bundle ACL Reconstruction Using Medial Portal Technique: 3D Simulation Study

Table 2

Comparison of the proportions of short tunnel with less than 25 mm in each setting.

Flexion angle	Transverse drill angle
	MTA	MTA-10°	MTA-20°	P-
100°	19 (63.3%)	27 (90%)	30 (100%)	<.001
110°	3 (10%)	2 (6.7%)	2 (6.7%)	0.779
120°	0 (0%)	0 (0%)	0 (0%)	-
130°	0 (0%)	0 (0%)	0 (0%)	-
P-	<.001	<.001	<.001

MTA: maximum transverse drill angle without coming into contact with the medial condyle cartilage.
The values are given as cases with proportion in parentheses.
-value for comparison between different transverse drill angles of MTA to MTA-20° in condition of fixed flexion angle.
-value for comparison between different flexion angles of 100° to 130° in condition of fixed transverse drill angle.