Sciatica Research Today is a free monthly online journal that collates and summarizes the latest research about Sciatica, including details on treatment, prevention, medication.

Cauda equina syndrome: factors affecting long-term functional and sphincteric outcome.

McCarthy MJ, Aylott CE, Grevitt MP, Hegarty J

Department of Spinal Studies and Surgery, Queens Medical Centre, Nottingham, United Kingdom.

STUDY DESIGN: Retrospective cohort study with prospective clinical follow-up. OBJECTIVE: To determine the factors that influence outcome after surgery for cauda equina syndrome (CES). SUMMARY OF BACKGROUND DATA: CES is a rare but serious consequence of lumbar disc prolapse and can have devastating long-lasting neurologic consequences. The timing of surgical decompression remains controversial. METHODS: Fifty-six patients with evidence of a sphincteric disturbance who underwent urgent surgery were identified and invited to follow-up. The outcome measures comprised history and examination and several validated self-assessment questionnaires. RESULTS: Forty-two patients (78%) attended with a mean follow-up of 60 months (range, 25-114 months). Mean age at onset was 41 years (range, 24-67 years) with 23 males and 19 females. Twenty-six patients were operated on within 48 hours of onset of sphincteric symptoms; 5 of these were within 24 hours. Acute onset of sphincteric symptoms and the time to operation did not influence the outcomes. Leg weakness at onset persisted in a significant number of patients at follow-up (P < 0.005). Urinary disturbance at presentation did not affect the outcomes. At follow-up, significantly more females had urinary incontinence (P < 0.005). Bowel dysfunction at presentation was associated with sexual problems at follow-up (P < 0.005). The 13 patients who failed their post operative trial without catheter had worse outcomes. The SF-36 scores at follow-up were reduced compared with age-matched controls in the population. The mean ODI was 29, Low Back Outcome Score 42, and VAS 4.5. The time elapsed from operation to follow-up was not found to influence the outcomes. CONCLUSIONS: In our series, the symptom duration before operation and the speed of onset do not affect the outcome more than 2 years after surgery. Based on the SF-36, ODI, and Low Back Outcome Scores, patients who have had CES do not return to a normal status.

Published 16 January 2007 in Spine, 32(2): 207-16.
Full-text of this article is available online (may require subscription).

© 2004-2008 Sciatica Research Today. All Rights Reserved.