Table VII.

Reader measurements.

Reader	LCEA, °	CCD, °	Obliquity, °	Tönnis grade	Sharp’s angle, °	Femoral head coverage, %	Extrusion index, %
Reader 1 mean (range)	18.1 (-9.4 to 34.4)	137.5 (124.3 to 168.5)	1.3 (0.0 to 7.2)	10.9 (-4.8 to 36.9)	43.5 (33.2 to 60.3)	71.1 (46.7 to 88.5)	28.9 (11.5 to 53.3)
Reader 2 mean (range)	17.7 (-14.7 to 39.7)	132.7 (119.7 to 155.3)	1.6 (0.0 to 9.4)	13.3 (-2.6 to 44.3)	43.9 (33.5 to 61.5)	70.0 (41.4 to 87.8)	30 (12.2 to 58.6)
Reader 3 mean (range)	16.6 (-12.1 to 38.2)	134.7 (115.6 to 160.6)	1.7 (0.0 to 9.5)	13.2 (-1.3 to 38.8)	44.3 (34.2 to 59.5)	68.2 (37.8 to 89.3)	31.8 (10.7 to 62.2)
AI mean (range)*	19.3 (-2.7 to 34.2)	134.9 (84.3 to 180.0)	1.7 (0.0 to 9.3)	12.5 (-2.5 to 28.9)	43.0 (32.7 to 55.5)	76.2 (53.6 to 100.8)	23.8 (-0.8 to 46.4)

^*One extreme outlier was not included in the HIPPO calculations due to erroneous landmark placement.

AI, artificial intelligence; CCD, caput-collum-diaphyseal; LCEA, lateral centre-edge angle.