Table II.

Histological score

Weeks from anterior cruciate ligament operation	Socket group	Tunnel group	p-value
Roof at 4 weeks	4.8 (1.7)	4.5 (0.5)	0.14
Side at 4 weeks	5.0 (1.2)	4.8 (0.4)	0.88
Roof at 8 weeks	5.8 (0.8)	4.8 (1.8)	0.43
Side at 8 weeks	5.3 (0.8)	5.5 (0.8)	0.61

All data indicate mean (sd). All comparisons were conducted using a Mann-Whitney U test. Intraclass correlation coefficient (ICC) for the ‘roof zone’: 0.900 (95 % CI 0.797 to 0.955), ICC for the ‘side zone’: 0.921 (95% CI 0.839 to 0.965).