Studies show that leg length discrepancy can be radiographically within a maximum error rate of 2-5mm with an average error of about 1mm.
It’s important to first “normalize” lumbopelvic mechanics, the radiographs are then useful as guidelines for applying a corrective shoe lift (Greenman).
It has been illustrated the use of standing radiography in the frontal and sagittal planes to mine the cause of inclination of he base of the spinal column to establish the optimum correction of lower limb length (Lewit).
Safety concerns should be considered when using radiography. Appropriate protection should be worn and the the type of radiography needs to be considered. Digital maybe a better option to minimize radiation exposure.
