Hi, thanks for writing to HCM.
A spinal tap
at times may cause back pain
due to the development of DISCITIS (infection in the intervertebral disc
) through which the spinal needle passes into the spinal canal
But this is more unlikely in your case as it has been more than 6 years since the time of your spinal tap. Discitis usually develops within 3 weeks of a spinal tap.
So there could be other causes for your back pain which needs evaluation by an orthopedic surgeon.
Hope this information is helpful. Good day