Clinical characteristics of recurrent sciatica after lumbar discectomy

Area of Science:

• Neurosurgery
• Orthopedic Surgery
• Pain Management

Background:

• Surgical treatment for recurrent sciatica after disc excision is often successful for recurrent herniation but less so for fibrosis and scarring.
• Differentiating between recurrent disc herniation and post-surgical fibrosis is crucial for effective patient management.

Purpose of the Study:

• To determine the frequency of common symptoms and signs in patients with recurrent disc herniation, symptomatic postoperative epidural fibrosis, and primary disc herniation.
• To compare these symptoms and signs to aid in differential diagnosis after lumbar disc surgery.

Main Methods:

• A prospective study collected preoperative data on pain (rest, night, coughing), analgesic use, walking capacity, straight leg raise test results, and neurological examination findings.
• Patients were categorized into three groups: recurrent disc herniation (n=22), symptomatic postoperative epidural fibrosis (n=18), and primary disc herniation (n=150).
• Surgical findings served as the ultimate diagnostic criterion.

Main Results:

• Pain at rest and night were common across all groups.
• Pain upon coughing was more frequent in primary and recurrent disc herniation compared to fibrosis.
• Reduced walking capacity was more prevalent in disc herniation patients, while regular analgesic use was highest in fibrosis patients.

Conclusions:

• Distinct symptom and sign profiles exist for recurrent disc herniation and post-lumbar surgery fibrosis.
• These differences are valuable for differential diagnostic considerations in patients with a history of lumbar disc surgery.