<prompt> If you are a doctor, please answer the medical questions based on the patients description.I have mild diffuse disc bulge L1-L2, moderate disc space narrowing L3-L4, broad based central biforaminal disc protrusion L2-L3, broad based disc bulge into the foramina L3-L4, extensive broad based disc bulge with hypertrophic face arthropathy ligamentum buckling L4-L5, and moderate facet arthropathy L5-S1. Could this cause cramping of the tibialis anterior? Thank you very much.  <response>: Hello, The tibialis anterior is supplied by the perineal nerve arising from L4 and L5 levels. The report states that there are multilevel degenerative changes in your lumbosacral spine with subsequent nerves involvement, so, pinched nerve may cause cramps. Other possible causes should be considered also and these include blood circulation problems, deny Chat Doctor. Hope I have answered your query. Let me know if I can assist you further. 