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Updated: Aug 1, 2026

Intraoperative Ultrasound in Spinal Surgery
Published on: August 17, 2022
[Re-operation in protrusion of a lumbar intervertebral disk: report of 30 cases]
Abstract:
Thirty cases, who had been operated on under diagnosis of protrusion of lumbar intervertebral disk, were re-operated upon because of failure of relieving their sufferings or tardy recurrence of symptoms. The actual causes found at operation were: missing a preexisting schwannoma in 4 patients, failing in working on correct space in diskectomy in 3, leaving another co-existed protruded disk untouched in 2, and lastly, recurrence of disk protrusion at the previous space in 7. Causes of these mishaps were discussed and some preventive precautions and measures have been suggested.
Insights
Reoperation for lumbar disc protrusion often fails due to missed schwannomas, incorrect surgical space, or unaddressed co-existing issues. Careful surgical planning and execution are crucial to prevent these common reoperation causes.
Area of Science:
- Neurosurgery
- Orthopedic Surgery
- Spinal Surgery
Context:
- Lumbar disc protrusion is a common condition requiring surgical intervention.
- Reoperation rates for lumbar disc protrusion can be significant.
- Identifying reasons for surgical failure is critical for improving patient outcomes.
Purpose:
- To analyze the causes of surgical failure and symptom recurrence in patients undergoing reoperation for lumbar disc protrusion.
- To identify specific factors leading to suboptimal outcomes after initial lumbar disc surgery.
Summary:
- Thirty patients requiring reoperation for lumbar disc protrusion were analyzed.
- Identified causes included missed schwannomas (4), incorrect surgical space (3), missed co-existing disc protrusion (2), and recurrence (7).
- Preventive strategies for these reoperation causes were discussed.
Impact:
- Highlights the importance of thorough pre-operative diagnosis and precise surgical technique in lumbar disc surgery.
- Provides insights into common pitfalls leading to reoperation, aiding surgeons in avoiding similar errors.
- Contributes to improving the success rates of lumbar disc protrusion surgeries.

