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 8

The proportion of femoral tunnel wall breakage including entrance breakage and mid-tunnel breakage in each setting.

Flexion angle	Transverse drill angle
	MTA			MTA-10°			MTA-20°
	EB	MB	TB	EB	MB	TB	EB	MB	TB
100°	11 (36.7%)	2 (6.7%)	13 (43.3%)	9 (30%)	11 (36.7%)	20 (66.7%)	11 (36.7%)	19 (63.3%)	30 (100%)
110°	4 (13.3%)	0 (0%)	4 (13.3%)	7 (23.3%)	2 (6.7%)	9 (30.0%)	11 (36.7%)	15 (50%)	26 (86.7%)
120°	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	5 (16.7%)	2 (6.7%)	7 (23.3%)
130°	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)	0 (0%)

MTA: maximum transverse drill angle without coming into contact with the medial condyle cartilage.
EB: entrance breakage, MB: mid-tunnel breakage, TB: total of femoral tunnel wall breakage including both entrance and mid-tunnel breakage.
The values are given as cases with proportion in parentheses.