<s>[INST] hi yes i was told today that i have mild indentiation of thecal sae compression and I m still confused if it is reall serious. I will be getting a back specialist hopfully soon. but i m not finding a lot of info about it just questions others leave online. [/INST] Hello, As the thecal sac compression is not a major thing to worry if noticed on an MRI. Because we always have to correlate the MRI results with the clinical symptoms. Usually, this thecal sac compression happens due to the weakness of the muscles of the spinal column leading to changes in the normal alignment of the spinal column. This intern leads to thecal sac compression.  Having cervical collar if it's the neck region and lumbar brace if it's the lumbar region, it will provide stability to the spinal column involved. Exercise to improve the stability and strength will be advised to current the alignment. Hope I have answered your query. Let me know if I can assist you further. Jay In Chat Doctor.  </s>