Recovery of muscle strength after microdiscectomy for lumbar disc herniation: a prospective cohort study with 1-year follow-up
Greger Lønne, Tore K. Solberg, Kristin Sjaavik, Øystein P. Nygaard
April 2012, Volume 21, Issue 4, pp 655 - 659 Original Article Read Full Article 10.1007/s00586-011-2122-x
First Online: 23 December 2011
Surgery has not been proven to be a better treatment option than non-operative management for limb paresis due to lumbar disc herniation. For the patients it will still be a concern, whether they will regain full strength after the operation or not.
A prospective cohort study of 91 patients with preoperative paresis due to disc herniation with 1-year follow up was carried out. The primary outcome was muscle strength in affected limb, and the secondary outcome was self-reported symptoms on back and leg pain, disability, health related quality of life, general health and working capability.
Seventy-five percent of patients had no paresis 1 year after the operation. The severity of the paresis was the only predictor for persistent paresis. Preoperative duration of the paresis did not influence the rate of full recovery. Non-recovery was associated with inferior outcomes and higher risk for reduced working capability.
The majority of patients with paresis were fully recovered 1 year after microdiscectomy for lumbar disc herniation. If the paresis was severe at baseline, there was a four times higher risk for non-recovery. Patients who did not recover had significantly worse outcomes.
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