The relationship between pelvic block placement and radiographic pelvic analysis

In this current study, radiographs were taken to determine whether pelvic distortions could be demonstrated on x-ray when pelvic blocks were placed under the patient in the prone position.

One patient was placed prone in a neutral position and radiographs were taken in a neutral position, and then with a pair of pelvic blocks placed under the subject in each of 4 different positions: (Right Short Leg - Category One) left iliac crest, right greater trochanter; (Left short Leg - Category One) right iliac crest, left greater trochanter; (SB+) left and right iliac crests; and (SB-) left and right greater trochanters.

Findings indicated that pelvic block placement could create or affect distortions of the pelvis.

Further studies are indicated correlating radiographic analysis, pain provocation, and muscle strength to determine if a clear pelvic block preference can be determined definitively.