It is impossible to diagnose over the internet.
I would investigate for a herniated disk, pinched nerve, or other neurological disease.
An MRI of the lower back to evaluate the cause of the sciatica can be considered.
EMGs and other electrodiagnostic tests can be considered as well.
I would discuss this issue with a neurologist or your personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Check your pelvis. Is it aligned? Are your legs equal length? Any scoliosis?
They are all common symptoms of SIJD - very common disorder but continuously misdiagnosed...
Start from there:
I thought I was alone in universe with this problem.
I hope this helps.
I am also a runner and my left foot has been dragging.
I fell on my left side around 3 years ago.
I developed sciatica.
Then 6 months later my left leg decided it did not want to move any longer. Walking is ok, but when running knee does not bend enough. I saw a neurologist. MRI showed a disc bulge at L3/L4.
Months of PT, accupuncture and lots of other stuff but kind of back where I started.
My weakness is just in my left leg. I am now convinced I have a pinched nerve. Fortunately I have no pain just tighness.
I have started seeing a chiropracter to see if it can help.
What else have you done.
About 2 years ago I felt this terrible pain at back my lower back and about week I couldn
After suffering with low back pain and being unable to find any relief my wife was referred by a friend to a physical therapist in Gainesville, Georgia - They were able to diagnose her problem as a sacroiliac joint dysfunction. This condition does not show up on an xray, MRI or ct scan. After six weeks of therapy her condition improved greatly. She is still working with a related annular tear in a disk. The therapist she saw, Vicki Sims, has written a book "The Secret Cause of Low Back Pain" which pretty much tells all there is to know about this condition, including what can be done about it. She tells me that people come from all over the country to see her for evaluation because most doctors and chiropracters cannot diagnose this condition.