Pelvic mri v lumbosacral plexus

[monty999]

Is the sacrum seen in a pelvic mri?
Would there be any benefit in getting a lumbosacral mri if I have already had a pelvic and lower back mri?
Only ask as although I’m pretty sure this was caused by prolific cycling (I was getting ‘no pain’ niggles at the Sitbone after finishing rides years before) the pain actually kicked in after a fall onto my lower back that resulted in severe back pain for 7 months. As the back pain went the pudendal symptoms started. During the 7 months of back pain I had chronic constipation for 3 weeks (didn’t go at all) due to not being able to sit down.
So I am now wondering if the constipation tipped the scale after years of cycling. Or if the fall onto my sacrum could be the issue.
I have no back pain. Have Sitbone, labia, perineum, gluteal crease, mild buttock and leg pain.

[Violet M]

Is the sacrum seen in a pelvic mri?
Would there be any benefit in getting a lumbosacral mri if I have already had a pelvic and lower back mri?

It depends on which healthcare website you look at and where you had the MRI's done. Some of them say a pelvic MRI includes the sacrum and some don't. So you would need to get a copy of your pelvic MRI report to know for sure what was included. Same with the lower back MRI. You would need to get a copy of the MRI report to know if it included the lumbosacral area.

Sometimes it's a combination of things that can cause pudendal symptoms. For instance, maybe the fall or the cycling caused some injuries that healed but left scar tissue and then the constipation caused symptoms that might not have occurred if there hadn't been a previous fall or cycling history. Just brainstorming a possible example of how several things could contribute to the problem. For me, I had some ligament issues that I discovered because I was weightlifting. Even with the ligament problems, I might never have developed PNE if I hadn't started weightlifting. So, it can be a real trick to figure out the exact cause. I wish you the best in figuring this out and finding the right treatment.

Violet

[monty999]

Thank you.
I know the lumbar mri only shows a narrow field of the sacrum as I once again fell 6 months ago and lumbar MRI showed bone marrow oedema of the sacrum. The consultant said I needed a dedicated mri to check it in full.