When Sciatica Is Not Caused by Disc Compromise
An adult woman presented with persistent sciatica and no mechanical back pain. Imaging showed no disc herniation, grade 2–3 spondylolisthesis, and stable movement on dynamic X-rays. The supplied treatment plan describes decompression and reduction with screws in the sacrum, L4, and L5.
Explore the caseFrom the doctor
A brief explanation from Dr. Zuhair
A short explanation from Dr. Zuhair to introduce the clinical context before the case details.
Case summary
Symptoms this case helps explain
- Persistent sciatica
- No mechanical back pain
What imaging and reports help clarify
- No disc herniation
- Grade 2–3 spondylolisthesis
- Dynamic X-ray showed stable spondylolisthesis
Why does Spondylolisthesis with persistent sciatica need careful review?
The symptoms were persistent despite the absence of mechanical pain or a disc herniation. The evaluation therefore had to look beyond the disc and assess the nerve pathway outside the spinal canal.
How is the next step usually discussed?
- Dynamic X-rays were used to assess whether the spondylolisthesis moved; the supplied note describes it as stable.
- Surgery aimed to provide decompression by removing most of the compressing bone.
- The supplied plan describes reduction using screws in the sacrum, L4, and L5.
What does follow-up usually watch?
The supplied case note records the decompression and reduction plan but does not provide a postoperative symptom or follow-up outcome.
What is Spondylolisthesis with persistent sciatica?
Sciatica is often caused by a prolapsed disc, but not every case is explained by the presence or absence of a disc herniation. In this case, the important point was the path of the nerve after it leaves the spinal canal and how the spondylolisthesis affected that path.
When symptoms should not wait
Seek urgent medical care rather than a routine appointment if neurological symptoms are sudden, severe, or worsening.
- New weakness in an arm or leg, trouble walking, or rapidly worsening numbness.
- Loss of bladder or bowel control, or numbness around the saddle area.
- Severe pain with fever, trauma, confusion, seizure, or sudden vision changes.
What to prepare before asking about a similar case
Clear reports and a short symptom timeline help the clinic decide the safest next step faster.
- Bring the MRI and dynamic X-rays.
- Describe the exact path of leg pain and any numbness or weakness.
- Bring records of previous medication, physiotherapy, or injections.
Common patient questions
Can sciatica occur without a prolapsed disc?
Yes. The nerve may be affected elsewhere along its pathway, including after it leaves the spinal canal.
What did the dynamic X-ray show?
The supplied case note describes the spondylolisthesis as stable on dynamic X-ray.
What surgery was described?
The note describes decompression, reduction of the spondylolisthesis, and reduction screws in the sacrum, L4, and L5.