Conservative Correction of Leg-Length Discrepancies of 10mm or Less for the Relief of Chronic Low Back Pain A moderate positive correlation was found between LLD and the degree of pain relief after wearing shoe inserts (r.47). Defrin_Conservative-Correction-of-Leg-Length-Discrepancies-of-10mm-or-Less-for-the-Relief-of-Chronic-Low-Back-Pain_2005