Dry Needling Versus Percutaneous Electrolysis in Lumbar Multifidus Muscles in Patients With Chronic Low Back Pain.

It consists in application of dry needling on active and/or latent TPs in low back multifidus muscles

It consists in the application of intratissue percutaneous electrolysis with galvanic current as a cathodic flow electrode in the low back multifidus muscles. The intervention will be guided by ultrasound equipment medically certified.