MRI visibility of the anterolateral ligament and the deep structures of the iliotibial tract

Journal of Experimental Orthopaedics

Table 1 Inter- and intra-observer reproducibility results for the different parts of the ALL and the deep ITT structures

	Visibility	Inter-observer		Intra-observer
	%	Cohen’s kappa (95% CI)	Absolute Agreement [%]^a: Total / not visible/visible	Cohen’s kappa (95% CI)	Absolute Agreement [%]^a: Total / not visible / visible
Femoral part ALL	62.0	0.76 (0.61–0.92)	88.7 / 85.2 / 90.9	0.62 (0.43–0.81)	83.1 / 75.0 / 87.2
Meniscal part ALL	0.0	n.c.	100 / 100 / 100	n.c.	100 / 100 / 100
Tibial part ALL	73.2	0.97 (0.9–1.00)	98.6 / 97.4 / 99.0	0.85 (0.70–0.91) 0.846 (0.701–0.911)	94.4 / 88.2 / 96.3
Deep attachments of the ITT to the distal femur	60.6	0.94 (0.86–1.00)	97.2 / 96.4 / 97.7	0.94 (0.86–1.00)	97.2 / 96.3 / 97.7
Capsulo-osseous layer of the ITT	0.0	n.c.	100 / 100 / 100	n.c.	100 / 100 / 100

Table 1 Inter- and intra-observer reproducibility results for the different parts of the anterolateral ligament (ALL) (femoral, meniscal, tibial) and the deep iliotibial tract (ITT) structures (deep attachments of the ITT to the distal femur, capsulo-osseous layer of the ITT). 95% CI: 95% confidence interval; n.c., not calculated
^aThe percentage (%) of absolute agreement is reported across all categories and separately for the categories “not visible” and “visible”