Cervical split laminectomy vs conventional cervical laminectomy for treatment of cervical myelopathy

Withdrawn

Conditions: spinal canal narrowing
10019190

Registration Number: NL-OMON42752

Lead Sponsor: Sint Lucas Andreas Ziekenhuis

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Withdrawn

Sex: Not specified

Target Recruitment: 0

Inclusion Criteria

all patients who underwent a cervical split laminectomy because of cervical myelopathy between the first of januari 2004 and 31 december 2013 in the SLAZ (Sint Lucas Andreas Hospital).

Exclusion Criteria

No medical data available
pre-operative MRI of fluoroscopie not available
Cervical operation in patients history
Operation because of other reason then cervical spondylotic myelopathy
Applying cevical spondylodesis during operation
Additional neurological impairment
congentical misformed cervical spine
Patient is deceased
patient is not available
patient gave no informed consent

Study & Design

Study Type: Observational non invasive

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>Baseline and short-term functional status was scored via a questionnaire, the<br /><br>Nurick outcome scale. Long-term follow-up functional status was scored by means<br /><br>of a set of questionnaires: The Nurick outcome scale, the adjusted JOA scale<br /><br>and Neck disability index.<br /><br>Preoperative fluoroscopy and MRI of the cervical spine were evaluated. The<br /><br>fluoroscopy was used to determine the presence of kyphosis and segmental<br /><br>instability using the methods of, Matsumoto and Knopp respectively.<br /><br>The preoperative MRI was evaluated to confirm the diagnosis of spondylotic<br /><br>myelopathy, to count the number of stenotic levels and to assess the presence<br /><br>of any lesions in the spinal cord. Moreover, the compression ratio of all<br /><br>cervical levels was measured by dividing the sagittal diameter of the medulla<br /><br>by the transverse diameter </p><br>

Secondary Outcome Measures

Name	Time	Method
<p>At long-term follow-up a lateral and a flexion-extension fluoroscopy was<br /><br>obtained and evaluated for the presence of kyphosis and segmental instability.<br /><br>Anteroposition of more than 2 mm of two adjacent corpora occurring upon motion<br /><br>was considered as segmental instability.<br /><br>In addition, prospective data of the perceived recovery were retrieved from a<br /><br>questionnaire at long-term follow-up, at least 3 year postoperatively </p><br>