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Table 4 Mean errors and standard deviations ([cm]) between the trochlea position computed via the socket-ball model and by the reconstruction done by the optical system (five individuals, three trials). Test points are spanned by θ=θ arm and ψ=ψ arm

From: A bi-articular model for scapular-humeral rhythm reconstruction through data from wearable sensors

θ∖ψ

10°

20°

30°

40°

50°

60°

70°

80°

20°

0.4±0.5

0.6±0.5

0.7±0.4

1.2±0.5

0.9±0.5

0.7±0.5

0.6±0.7

0.4±0.6

40°

0.8±0.6

1.1±0.7

1.2±0.5

1.2±0.5

1.2±0.4

1.1±0.6

0.8±0.6

0.6±0.4

60°

1.3±0.5

1.4±0.7

1.5±0.5

1.6±0.5

1.5±0.5

1.4±0.5

1.2±0.6

1.0±0.4

80°

2.2±1.0

2.5±0.5

2.9±0.5

3.0±0.8

2.8±0.7

2.7±0.8

2.3±0.4

2.1±0.6

100°

4.3±0.9

4.8±0.6

4.9±0.8

5.4±0.5

10.7±1.1

5.2±0.7

4.8±0.4

3.7±0.8

120°

10.3±0.7

10.3±1.0

10.6±1.2

11.5±1.1

11.3±0.9

11.0±0.6

9.8±0.9

9.2±0.7