KMID : 1001920140560030224
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Journal of Korean Neurosurgical Society 2014 Volume.56 No. 3 p.224 ~ p.229
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Long-Term Clinical and Radiologic Outcomes of Minimally Invasive Posterior Cervical Foraminotomy
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Kwon Young-Joon
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Abstract
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Objective: To report long-term clinical and radiological outcomes of minimally invasive posterior cervical foraminotomy (MI-PCF) performed in patients with unilateral single-level cervical radiculopathy.
Methods: Of forty-six patients who underwent MI-PCF for unilateral single-level radiculopathy between 2005 and 2013, 33 patients were included in the study, with a mean follow-up of 32.7 months. Patients were regularly followed for clinical and radiological assessment. Clinical outcome was measured by visual analogue scale (VAS) for the neck/shoulder and arm, and the neck disability index (NDI). Radiological outcome was measured by focal/global angulation and disc height index (DHI). Outcomes after MI-PCF were evaluated as changes of clinical and radiological parameters from the baseline. Mixed effect model with random patients¡¯ effect was used to test for differences in the clinical and radiological parameters repeat measures.
Results: There were no complications and all patients had an uneventful recovery during the early postoperative period. VAS scores for neck/shoulder and arm improved significantly in the early postoperative period (3 months) and were maintained with time (p<0.001). NDI improved significantly post-operatively and tended to decrease gradually during the follow-up period (p<0.001). There were no statistically significant changes in focal and global angulation at follow-up. Percent DHIs of the upper adjacent or operated disc were maintained without significant changes with time. During the follow-up, same site recurrence was not noted and adjacent segment disease requiring additional surgery occurred in two patients (6%) on the contra-lateral side.
Conclusion: MI-PCF provides long-term pain relief and functional restoration, accompanied by good long-term radiological outcome.
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KEYWORD
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Cervical spine, Foraminotomy, Surgical procedures, Minimally invasive, Radiculopathy, Patient outcome assessment
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