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Surgery for herniated lumbar discs: a literature synthesis
R M Hoffman1, K J Wheeler, R A Deyo
1Medical Service, Seattle Veterans Affairs Medical Center, Washington.
Journal of General Internal Medicine
|September 1, 1993
Summary
Surgery for herniated lumbar discs (discectomy) offers better short-term pain relief than conservative care. However, long-term outcomes are similar, and reoperation rates increase over time, necessitating careful risk-benefit consideration.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Evidence-Based Medicine
Background:
- Herniated lumbar discs are a common cause of back pain.
- Surgical interventions like discectomy aim to alleviate symptoms.
- The comparative effectiveness and safety of different discectomy techniques require thorough evaluation.
Purpose of the Study:
- To assess the risks and benefits of lumbar discectomy.
- To evaluate the methodological quality of existing literature on discectomy.
- To compare surgical outcomes with conservative treatment for herniated lumbar discs.
Main Methods:
- Literature synthesis of studies on standard, microsurgical, and percutaneous discectomy.
- Inclusion criteria: adult subjects, sample size >30, clinical outcome data for >75% of patients, follow-up >1 year.
- Random-effects logistic regression for outcome rates; established criteria for methodologic quality assessment.
Main Results:
- Eighty-one studies met criteria, but most had design flaws.
- Standard discectomy showed superior short-term sciatica relief vs. conservative care (65-85% vs. 36% at 1 year).
- Reoperation rates were ~10% and increased over time; serious complications were <1%.
Conclusions:
- Most discectomy studies are poorly designed and reported.
- Standard discectomy provides better short-term pain relief, but long-term outcomes are similar to conservative treatment.
- Discectomy is relatively safe, but reoperation risk necessitates balancing faster relief against surgical risks and costs.