my husband had a bad fall yesterday in the bathroom he hit d floor with his lower back in a sitting like position and a bit supine like position. he went to look for a doctor and had an xray. he had a history of slip disc. he was complaining yesterday bout his lower back aching. i want to ask, is it possible that xrays could not detect slip disc and fracture of d bones when indeed he had a bad fall? pls reply. thank you very much.