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Table 4 Precision by technique for knee range of motion (proportions of measurement errors within 10° or 5° of motion capture analysis)

From: Is digital photography an accurate and precise method for measuring range of motion of the hip and knee?

 

Visual

Goniometer

Photo

Knee Flexion (<10°)

92%

94%

90%

Knee Extension (<5°)

49%

50%

74%

  1. Precision of measurements or the proportion of measurement errors that were within 10° (for elbow flexion) or 5° (for elbow extension), defined as the minimally clinically significant difference by the authors, of the reference standard (motion capture analysis) for both knee motions