A new method of stabilising the elevated laminae in open-door laminoplasty using an anchor system

Authors:
  • KRK.-J. Roh
    K.-J. Roh
  • DKD.-J. Kim
    D.-J. Kim
  • DKD.-W. Kim
    D.-W. Kim
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Abstract
We treated 12 patients with multilevel stenosis of the cervical canal after spondylosis or ossification of the posterior longitudinal ligament by an expansive open-door laminoplasty, stabilised by using an anchor system. The preoperative sagittal diameter of the canal was 9.8 mm(+/-2.2) which was increased to 16.1 mm(+/-2.9) after surgery. The mean expansion ratio of the canal was 64% (42 to 100). The anchoring systems did not fail during the follow-up period (mean 29.5 months), and the decompression was maintained. The use of anchor systems to stabilise the posterior elements after laminoplasty is a simple and effective technique for maintaining the increased sagittal diameter of the canal.