I have painful back spasms. Physical therapy has eased but not stopped the pain. I've had this condition since last dec. X-ray and ultra sound have dismissed internal problems. The pain is in the back muscles on the left side only. Leaning forward seem

Muscle . Muscle spasms can sometimes be helped by muscle relaxant (like soma), trigger point injections (steroid medicine is injected into the muscles), facet joint injections (steroid injections in the facet joints in the rear of the spine), endoscopic rhizotomy (cutting nerves that cause pain and muscle spasms in the back) and epidural injections. I would recommend consultation with an interventional pain doctor. Please see my health guides on facet arthropathy and endoscopic rhizotomy. Good luck!