Table 2.
Frequency of errors in clinical measurements compared to radiograph (validity).
Clinical Measurement
Lifts
Tape Measure
Error > 5 mm
2/20 (10%)
9/20 (45%)
Error > 10 mm
0/20 (0 %)
5/20 (25%)
Wrong leg identified as longer
1/20 (5 %)
7/20 (35%)