• Minim Invasive Neurosurg · Apr 2010

    Comparative Study

    Comparison of unilateral hemilaminotomy and bilateral hemilaminotomy according to dural sac area in lumbar spinal stenosis.

    • A Dalgic, O Uckun, M F Ergungor, O Okay, E Daglioglu, G Hatipoglu, L Pasaoglu, and Y S Caglar.
    • Ankara Numune Educational and Research Hospital, Neurosurgery Clinic, Ankara, Turkey. alidalgic@yahoo.com
    • Minim Invasive Neurosurg. 2010 Apr 1;53(2):60-4.

    IntroductionUnilateral hemilaminotomy (ULH) and/or bilateral hemilaminotomy (BLH) with limited facetectomy are defined approaches to decompress the thecal sac and exiting lumbar nerve roots without increasing the risk of subsequent spinal instability.MethodsWe retrospectively analyzed 18 cases with degenerative lumbar spinal stenosis (LSS) with BLH or ULH that was performed in 11 and 7 cases, respectively. Magnetic resonance imaging (MRI) was performed at the follow-up examination and dural sac area (DSA) was calculated on T(2)-weighted MRI images and then compared statistically. In addition, the economic and functional status of the patients were evaluated with the Prolo scale.ResultsThe mean preoperative values on the visual analogue scale (VAS) were 7.1 for lumbalgia and 7.0 for leg pain, respectively. These values were calculated as 4.8 and 4.4 at the follow-up, respectively. The VAS was significantly improved after operation compared to preoperative values (p=0.001). The mean value of the DSA was 84 (+/-32) mm(2) before the operation and 126 (+/-35) mm(2) at the follow-up and the comparison was statistically significant (p=0.001). No statistical correlation was found between VAS and DSA or between VAS and ULH-BLH groups, however, DSA of the BLH cases was significantly higher than in the ULH group (p=0.035). There was a significant negative correlation between VAS scores (back and leg pain) and Prolo status. However, there was no significant difference between DSA and Prolo scores, and between ULH or BLH groups in terms of Prolo scores.ConclusionA unilateral approach with bilateral decompression and bilateral approach with bilateral hemilaminotomy are both minimal invasive, adequate and safe approaches with excellent prognosis. However, BLH leads to a bigger expansion of DSA.Copyright Georg Thieme Verlag KG Stuttgart New York.

      Pubmed     Full text   Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…