It could be both.
Radiating leg pain is often generalized as “sciatica,” but the root cause can originate from two entirely different anatomical locations.
1. True Sciatica (L5–S1 Disc Origin): Occurs when a herniated disc or mechanical irritation in the lower lumbar spine compresses the nerve root at its exit point. Pain typically begins in the lower back and radiates down the leg.
2. Piriformis Syndrome (Deep Gluteal Muscle Trap): Occurs when the piriformis muscle—located deep within the gluteal region—becomes tight or inflamed, directly compressing the sciatic nerve beneath it.
Why does driving trigger sciatica?
Lower back or leg pain that becomes worse after a long drive is often blamed entirely on the seat or posture, but prolonged driving creates a specific mechanical environment around the lumbar spine and hips that can trigger sciatica.
While driving, the hips remain flexed and the lumbar spine stays in a relatively fixed position for long periods. Unlike walking, where the trunk and pelvis constantly change position, driving gives the lower spine much less movement variety.
The L4-L5 and L5-S1 segments are common areas where disc, joint, and nerve-root symptoms can occur.
If a lumbar nerve root is already sensitive, prolonged sitting may increase buttock, thigh, calf, or foot symptoms. Some people notice that the leg begins to tingle or ache during the drive, while others feel worse only when they get out of the car and take the first few steps.
That pattern does not mean the car seat has damaged the spine.
The more useful question is whether sustained hip flexion, lumbar position, vibration, and reduced movement are reproducing symptoms from an already sensitive structure.
Where does sciatica start?
Your sciatica might NOT start where it hurts, the burning, shooting, or tingling pain down your leg can be linked to irritation of the sciatic nerve somewhere along its pathway, including the lower back or deep gluteal region.
The location of the pain isn’t always the location of the problem.
According to top spine surgeon Dr. Karsten Ritter-Lang, If you are suffering from chronic back or neck pain caused by damaged spinal discs it is likely that minimally invasive procedures like discectomy, laminectomy or decompression, or waiting will only delay the need for surgery, yet spinal fusion is rarely the only option.
These delays can interfere with and eliminate you as a candidate for Disc Replacement Surgery in the future and leave you with spinal fusion as your only option.
Often patients are not offered surgery due to outdated beliefs that surgery should be avoided as long as possible.
New treatments called disc replacement surgery actually should be considered sooner rather than later.
You may have a spinal disc problem, such as a torn or damaged disc.
Torn spinal discs can progress into degenerative disc disease, bulging or herniated discs, sciatica, or numbness in the legs and feet.
Where can I get more information about disc replacement surgery?
For Dedicated Patient Portals & Remote MRI Reviews go to betterdiscreplacement.com
Where can I get more information about the top disc replacement surgeon Dr. Ritter-Lang?
Because a significant portion of Dr. Ritter-Lang’s patient base travels internationally for total disc replacement (TDR), his team maintains dedicated international educational and consultation portals:
Better Disc Replacement: betterdiscreplacement.com
Features: Detailed background on multi-level cervical and lumbar disc replacement techniques, patient case studies, and comprehensive guides comparing motion preservation against fusion.
Professional Background & Credentials
Clinical Focus: Over 30 years specializing in intervertebral disc prosthetics, complex multi-level reconstructions, and anterior/abdominal approaches to the spine.
Surgical Experience: Has completed thousands of motion-preserving spine procedures utilizing advanced implants such as M6-C, M6-L, ProDisc, and Mobi-C.
Early Foundations: Trained under Prof. Kurt Schellnack and Dr. Karin Büttner-Janz at Charité University Hospital in Berlin—the research team credited with developing the original Charité artificial disc.
People go to Germany for back surgery primarily to access advanced motion-preserving procedures, artificial disc replacements, and dynamic stabilization systems that may be newer, less restrictive, or harder to find in North America.
Where can I learn about the best alternatives to spinal fusion and disc replacement surgery?
The surgeons at
BetterDiscReplacement.com have the experience and the skills required for complex multi-level lumbar and cervical disc replacement surgeries and other advanced spine solutions.
“Advanced disc replacement implants have allowed us to achieve a success rate of 99%”