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Table 2 Bias and precision of motion-tracking-guided measurements

From: Alterations in articular cartilage T2 star relaxation time following mechanical disorders: in vivo canine supraspinatus tendon resection models

 

Phantom model

In vivo shoulder model

Center distance

(mm)

Block angle

(°)

Average contact

strain (%)

Contact area ratio

(%)

Bias

Precision

Bias

Precision

Bias

Precision

Bias

Precision

Position 1

(Angle: 0°)

0.006

+  0.089

– 0.089

0.049

+  0.133

– 0.133

0.066

– 0.484

+  0.575

0.048

– 1.020

+  0.947

Position 2

(Angle: 30°)

– 0.023

+  0.056

– 0.056

– 0.692

+  0.126

– 0.126

– 0.138

– 0.425

+  0.465

– 0.308

– 0.850

+  0.758

Position 3

(Angle: 60°)

– 0.050

+  0.084

– 0.084

0.027

+  0.136

– 0.136

– 0.349

– 0.604

+  0.696

– 0.570

– 0.929

+  0.997