Factors affecting the surgical results of expansive laminoplasty for cervical spondylotic myelopathy

Chung, Sung Soo; Lee, Chong Suh; Chung, Kwang Hoon

doi:10.1007/s00264-002-0372-2

Cited by 41 publications

(21 citation statements)

References 23 publications

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“…Tomosato [21] demonstrated patients with a longer duration of symptoms had inferior neurological recovery. However, Fessler and Chung reported the duration of symptoms did not affect surgical outcomes [4,9]. In our study, there was no significant difference in neurological recovery in patients with different pre-operative durations of symptoms.…”

Section: Change Of Lower Limb Function Score With Timecontrasting

confidence: 39%

“…Surgical decompression is recommended for patients with moderate to severe disease [1]. Studies have been done to evaluate the results of different treatment methods, namely sub-total corpectomy, laminectomy and laminoplasty [6,13,15,20], and factors affecting the surgical outcomes [3,4,11,18,21]. However, these assessments tend to be of a more global perspective, looking at a composite score for upper limb, lower limb and bladder and bowel function.…”

Section: Introductionmentioning

confidence: 99%

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Neurological recovery after surgical decompression in patients with cervical spondylotic myelopathy - a prospective study

Cheung

Arvinte

Wong

et al. 2007

International Orthopaedics (SICO

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Cervical spondylotic myelopathy is a common clinical problem. No study has examined the pattern of neurological recovery after surgical decompression. We conducted a prospective study on the pattern of neurological recovery after surgical decompression in patients with cervical spondylotic myelopathy. Patients suffering from cervical spondylotic myelopathy and requiring surgical decompression from January 1995 to December 2000 were prospectively included. Upper limbs, lower limbs and sphincter functions were assessed using the Japanese Orthopaedic Association (JOA) score. Assessment was done before the operation, at 1 week, 2 weeks, 1 month, 3 months, 6 months, 1 year and then yearly after surgery. Results were analysed with the t-test. Differences with Pvalues less than 0.05 were regarded as statistically significant. Fifty-five patients were included. The average follow-up period was 53 months. Thirty-nine patients (71%) had neurological improvement after the operation with a mean recovery rate of 55%. The JOA score improved after surgery, reaching statistical significance at 3 months and a plateau at 6 months. Thirty-six patients (65%) had improvement of upper limb function. Twentyfour patients (44%) had improvement of lower limb function. Eleven patients (20%) had improvement of sphincter function. The recovery rate of upper limb function was 37%, of lower limb function was 23% and of sphincter function was 17%. Surgical decompression worked well in patients with cervical spondylotic myelopathy. Seventy-one percent of patients had neurological improvement after the operation. The neurological recovery reached a plateau at 6 months after the operation. The upper limb function had the best recovery, followed by lower limb and sphincter functions.Résumé Les myélopathies cervicales sont un problème courant. Aucune étude n'a examiné la récupération neurologique après décompression chirurgicale. Nous avons conduit une étude prospective sur ce sujet, chez des patients ayant bénéficié d'une décompression pour myélopathie cervicale. Les patients opérés entre janvier 1995 et décembre 2000 ont été inclus dans cette étude. Les fonctions des membres supérieurs, des membres inférieurs et les fonctions sphinctériennes ont été évaluées selon le score de la JOA (Association Japonaise d'Orthopédie). L'évaluation a été réalisée avant l'opération, une semaine, deux semaines, un mois, trois mois, six mois, un an et chaque année après l'intervention chirurgicale. Les résultats ont été analysés selon le P test et en appréciant ensuite les résultats statistiquement ou non statistiquement significatifs. Cinquante-cinq patients ont été inclus. Le suivi moyen a été de 53 mois, 39 patients (71%) ont montré une amélioration neurologique après l'intervention avec un taux de récupération complète de 55%. Le score de la JOA a été amélioré à 3 mois avec un plateau de récupération à 6 mois. Trente-six patients (65%) ont vu une amélioration au niveau des fonctions du membre supérieur, 24 (44%) au niveau des membres inférieurs, 11 (5%...

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Section: Change Of Lower Limb Function Score With Timecontrasting

confidence: 39%

Section: Introductionmentioning

confidence: 99%

Neurological recovery after surgical decompression in patients with cervical spondylotic myelopathy - a prospective study

Cheung

Arvinte

Wong

et al. 2007

International Orthopaedics (SICO

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“…Fifthly, the average RR obtained from this study was lower than that reported previously. According to previous reports [3,16,[22][23][24][25], the average RR ranged from 47.1 to 67.6%. Factors affecting neurological recovery have also been reported to include age, signal change of the spinal cord on MRI and segments of spinal compression [4-11, 22, 25, 26].…”

Section: Discussionmentioning

confidence: 91%

Surgical outcomes and prognostic factors of cervical spondylotic myelopathy in diabetic patients

Dokai

Nagashima

Nanjo

et al. 2011

Arch Orthop Trauma Surg

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“…However, Chung et al reported that the presence of high signal intensity on MRI proved to be of no prognostic importance [14], while Morishita et al reported that evaluation of the median nerve SSEP was useful for prediction of the prognosis in the surgically treated patients [15].…”

Section: Discussionmentioning

confidence: 99%

Cervical myelopathy due to single level prolapsed disc and spondylosis: a comparative study on outcome between two groups

Ryu

Chae

Cho

et al. 2010

International Orthopaedics (SICOT)

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This article describes a retrospective study on myelopathy, induced by monosegmental prolapsed disc and spondylosis. To assess pre-and postoperative clinical and radiological findings related to myelopathy, and factors influencing the outcome, 20 disc herniation (group A) and 11 spondylosis patients (group B) were studied. Average duration of myelopathy in groups A and B were 3 and 8.7 months, respectively. Anterior decompression and fusion were performed. Pre-and postoperative clinical and radiological findings and outcomes were assessed. Average preoperative disc heights were 85.9% of normal in group A and 72.7% in group B. Average anteroposterior canal diameter and Pavlov ratio at diseased level were 13.9 mm and 0.81 in group A, respectively, and 12.1 mm and 0.78 in group B. Five group A (25.0%) and four group B cases (36.4%) had radiculopathy. Cord compressions among 20 group A patients were median in seven and paramedian in 13. In the 11 group B patients, nine were median and two were paramedian. High signal intensity was observed in 19 group A and ten group B patients. Postoperative regression of T 2 -weighted high signal intensity in 14 group A (73.7%) and two group B patients (20.0%) was observed. Preoperative JOA scores in groups A and B were 10.3 and 12.8, respectively, which became 66.2 and 22.5 postoperatively. Neurological recovery was poorer in group B than in group A. Outcome was influenced by chronicity of myelopathy.

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Factors affecting the surgical results of expansive laminoplasty for cervical spondylotic myelopathy

Cited by 41 publications

References 23 publications

Neurological recovery after surgical decompression in patients with cervical spondylotic myelopathy - a prospective study

Neurological recovery after surgical decompression in patients with cervical spondylotic myelopathy - a prospective study

Surgical outcomes and prognostic factors of cervical spondylotic myelopathy in diabetic patients

Cervical myelopathy due to single level prolapsed disc and spondylosis: a comparative study on outcome between two groups

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