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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