Fig. 2From: Use of ultrasonography for evaluation of stability of lateral compression type 1 (LC-1) pelvic fractures to assist determination of treatment strategyMethod of measuring displacement in three directions, performed measures the displacement under the ultrasonic probe while the orthopedist performs the pelvic compression and separation tests. a Displacement at rest. b Displacement during the compression test. c Displacement during the separation test. The yellow line shows the L-R distance, the green line shows the A-P distance and the red line shows the oblique distanceBack to article page