Skip to main content

Table 3 Hip angles in the MROpen and motion analysis lab, least-squares error in hip angles, and corresponding beta angles for the sitting FADIR (for the participants considered in the final accuracy calculation)

From: Open MRI validation of a hip model driven with subject-specific motion capture data in predicting anterior femoroacetabular clearance

Participant #

Flexa, MoLabb

(°)

Flex,

MROpen

(°)

IRc,

MoLab

(°)

IR,

MROpen

(°)

Abdd,

MoLab

(°)

Abd,

MROpen

(°)

LSQEe

(°)

Beta

MoLab

(°)

Beta MROpen

(°)

Absolute Difference

in Beta

(°)

BMI (kg/m2)

CPM-(6)

89.4

88.9

7.3

7.9

8.6

8.0

0.9

−14.1

− 14.1

0.0

28.0

CPM-(7)

87.9

88.3

14.7

15.0

2.4

1.1

1.3

17.0

17.2

0.2

23.1

CPM-(1)

86.9

88.1

38.0

37.3

1.2

−2.0

3.5

− 11.1

− 11.7

0.6

26.1

CPM+ (1)

96.7

98.5

18.6

16.9

7.5

3.8

4.4

−36.7

− 37.5

0.8

27.5

CPM-(8)

90.8

93.8

19.2

17.2

6.6

3.4

4.8

− 10.5

−9.9

0.6

30.3

CPM+ (4)

85.5

84.9

12.4

16.5

0.9

6.9

7.2

− 18.3

− 18.6

0.3

19.3

CPM-(4)

88.7

81.6

16.3

23.6

−14.3

− 10.0

11.1

− 3.5

−2.7

0.8

32.8

  1. aFlex Flexion, positive values represent flexion, and negative values represent extension; bMoLab Motion lab; cIR Internal rotation, positive values represent internal rotation, and negative values represent external rotation; dAbd Abduction, positive values represent abduction, and negative values represent adduction; eLSQE Least-squares error