Intra-Tester and Inter-Tester Reliability of the Lachmeter When Measuring Knee Joint Laxity

Table 6

Comparison of mean side-to-side difference between healthy subjects (n = 23) and ACL patients (n = 6).

Tester	Grip	Control side-to-side mean (SD) [95% CI]	ACL side-to-side mean (SD) [95% CI]	value
Tester 1	L grip	1.07 (0.84) [0.82; 1.32]	2.23 (1.72) [1.14; 3.32]	<0.01
	AD grip	1.41 (0.93) [1.14; 1.69]	2.08 (1.57) [1.09; 3.08]	0.06
Tester 2	L grip	1.04 (0.68) [0.84; 1.24]	2.67 (1.16) [1.97; 3.38]	<0.01
	AD grip	1.13 (0.72) [0.92; 1.11]	1.60 (0.77) [1.11; 2.09]	0.05

L grip: Lachman grip; AD grip: anterior drawer grip. Anterior tibial translation was measured in mm and presented as mean ± standard deviation (SD) for healthy subjects and anterior cruciate ligament (ACL) patients. values correspond to the results from using Student’s unpaired t-test to test for differences between the groups.