• Clinical biomechanics · Feb 2016

    Randomized Controlled Trial

    Proprioceptive use and sit-to-stand-to-sit after lumbar microdiscectomy: The effect of surgical approach and early physiotherapy.

    • Lotte Janssens, Simon Brumagne, Kurt Claeys, Madelon Pijnenburg, Nina Goossens, Sofie Rummens, and Bart Depreitere.
    • KU Leuven Department of Rehabilitation Sciences, Leuven, Belgium; Hasselt University, Biomedical Research Institute, Diepenbeek, Belgium. Electronic address: Lotte.Janssens@faber.kuleuven.be.
    • Clin Biomech (Bristol, Avon). 2016 Feb 1; 32: 40-8.

    BackgroundIndividuals with non-specific low back pain show decreased reliance on lumbosacral proprioceptive signals and slower sit-to-stand-to-sit performance. However, little is known in patients after lumbar microdiscectomy.MethodsPatients were randomly assigned into transmuscular (n=12) or paramedian lumbar surgery (n=13). After surgery, the same patients were randomly assigned into individualized active physiotherapy starting 2 weeks after surgery (n=12) or usual care (n=13). Primary outcomes were center of pressure displacement during ankle and back muscles vibration (to evaluate proprioceptive use), and the duration of five sit-to-stand-to-sit movements, evaluated at 2 (baseline), 8 and 24 weeks after surgery.FindingsTwo weeks after surgery, all patients showed smaller responses to back compared to ankle muscles vibration (P<0.05). Patients that underwent a transmuscular surgical procedure and patients that received physiotherapy switched to larger responses to back muscles vibration at 24 weeks, compared to 2 weeks after surgery (P<0.005), although not seen in the paramedian group and usual care group (P>0.05). Already 8 weeks after surgery, the physiotherapy group needed significantly less time to perform five sit-to-stand-to-sit movements compared to the usual care group (P<0.05).InterpretationShortly after lumbar microdiscectomy, patients favor reliance on ankle proprioceptive signals over lumbosacral proprioceptive reliance to maintain posture, which resembles the behavior of patients with non-specific low back pain. However, early active physiotherapy after lumbar microdiscectomy facilitated higher reliance on lumbosacral proprioceptive signals and early improvement of sit-to-stand-to-sit performance. Transmuscular lumbar surgery favoured recovery of lumbosacral proprioception 6 months after surgery.Clinical Trial NumberNCT01505595.Copyright © 2016 Elsevier Ltd. All rights reserved.

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