My emg shows pinched nerves in l5-s1 region but the MRI is negative. How is this possible?

Complementary... The MRI shows a picture of the vertebrae and discs, but it does not show how the nerves are functioning. The two tests are complementary: one shows structure and the other shows function. A pinched L5 or s1 nerve does not always mean it is trapped by a disc or bone spur-- it may get damaged or pinched intermittently when your spine moves, or may have incurred stretch damage.
THE MRI IS NOT. The absolute, ultimate diagnostic test. It can rule out a lot of things but it can miss subtle problems that are bad enough to cause your EMG results. Please also remember that the cause of the EMG abnormality may not be arising from the spine...

Related Questions

Pinched nerves in neck from bulges at C5-C6 and C6-C7 via neck MRI, shoulder pain. Related? 6 MM slip at L5-S1 with pars defect and leg pain. Related? Thanks.

..Spine Specialist. 47 y/o Male w Pinched nerves in neck from bulges at C5-C6 and C6-C7 via neck MRI, shoulder pain. Related 6MM slipp at L5-S1 with pars defect and leg pain. Related? Thanks. Yes related called Degenerative Joint/ Disc disease. The Doctor who ordered the studies know what he/she is looking for Have him/her provide treatment guidance or see Spine Specialist. Thereafter mind Diet/ Exercise/ Lifestyle. Read more...

EMG/NCV says pinched nerve of L4, L5, S1, S2 (racepinephrine). I do not have weakness, atrophy, change in sensation, or any other complaint. Might be misdiagnosis?

Yes. EMG is complex and the report requires interpretation. Sometimes muscle spasm in the back causes abnormality of the back muscles that is described as lumbar radiculopathy but may not be a significant pinched nerve. Tests need to be taken in the context of the patient and their complaints and physical examination, just as you have suggested. Read more...

Supposedly have pinched nerves in back (per EMG + NCV): L4-L5 and S1-S2. Nothing shows up on MRI. What kinds of surgery might fix this? PT + inj. Fail

If no spot. on the MRI, then surgery is NOT indicated. Indeed, would be impossible to say where to do surgery and what to cut. Might mention that 50% of those with pain that seems like a disk do NOT have one on MRI. Read more...
Lots of questions. There are alot of questions to be answered before we can discuss surgical options especially if a MRI is not showing anything. First and foremost is your age and other symptoms. Therefore you should see a PMR or Neurologist to thoroughly evaluate your symptoms. I would be delighted to help you but need more information that the space has allowed you to provide. Read more...

Low back + distal lt. Leg pain. MRI negative but EMG/NCS says pinched nerves L4-L5 and S1. What can cause this?

Nerve impingement. can be caused by being sandwiched between two spinal bones, pressed by a bulging. It can cause muscle spasm and back pain. Prevention treatment is always recommended. This condition must be professionally managed. See interventional pain management specialist for definitive diagnosis and management. It is the same as a pinched nerve. Read more...
Still the spine. Sometimes MRI can be inconclusive but if EMG suggests its the L4, L5 and/or S1 nerve roots, then you have at least an answer that the spine may still be the cause of your back and leg pain. Vice versa, EMGs can also be inconclusive and MRI shows what the pathology is. I would suggest you see a try pain/spine specialist who can best treat you because MRI images may need full evaluation. Read more...

Damaged nerves at l5/s1, did disectomy but bladder function didn't came back. Emg test show nerves in leg regenerating. Will nerve in bladder regrow too?

Variable. Depending on how long since surgery. The farther out the less the likelihood. A cmg ( cystometrogram ) test may be helpful to evaluate bladder function. Read more...
Tough to predict. One would hope nerves to bladder will also regenerate, but this is complex, with both sympathetic and parasympathetic connections, sort of a need to restore a balance in function. Advise, contact a good urologist, and work closely. Electrical stimulators are available, and maybe a temporary choice. Read more...

My MRI shows l5-s1 prolapsed disc with compression of root nerve s1, now I am able to walk for 25 min & drive car, what are the physiotheraphy should?

See physician. Physician may refer to physiotherapist, who will focus on rehabilitation and healing of the affected area through range of individualised exercises and stretches.Most important to stay as mobile as possible, aids recovery time. Mild exercise such as swimming, where the water carries the weight is beneficial. Patient should be assessed by physician, orthropod, neurologist) therapy recommended. Read more...