Simulated weightbearing computed tomography for verification of radiographic staging of varus ankle osteoarthritis: a cross-sectional study

Table 2 Intra- and inter-rater reliability for distance and angle measurements

	Reliability measurement	Rater 1	Rater 2	Rater 3
(a – b) or (b – a)	intra-rater	0.964	0.955	0.989
(a – b) or (b – a)	inter-rater	0.987
∠TAS	intra-rater	0.963	0.917	0.883
∠TAS	inter-rater	0.955
∠TLS	intra-rater	0.981	0.964	0.985
∠TLS	inter-rater	0.988
∠TMM	intra-rater	0.997	0.993	0.997
∠TMM	inter-rater	0.990
∠TTA	intra-rater	0.980	0.989	0.991
∠TTA	inter-rater	0.989

a: distance from the posterior margin of the articular surface of the tibia to the articular surface of the talar dome
b: distance from the anterior margin of the articular surface of the tibia to the articular surface of the talar dome
∠TAS: Tibial articular surface angle
∠TLS: Tibial lateral surface angle
∠TMM: Tibial medial malleolus angle
∠TTA: Talar tilt angle

ISSN: 1471-2474