Comparison of two angles of approach for trigger point dry needling of the lumbar multifidus in human donors (cadavers)

All eight needles traversed the lumbar multifidus and ended in the lumbar lamina with little possibility of the needle entering the subarachnoid space. Thus both the inferomedial and the posteroanterior angles of approach are efficacious for clinicians to use in dry needling of the lumbar mulifidus.