The Importance of Lamina Size Measurement and Proper Implants Selection before Laminoplasty : Two Case Reports

Abstract

<p>Open door laminoplasty using plates is a safe and effective procedure for multi-level cord compression. To achieve stable laminar arch, various types of plate have been developed and used. Now, we introduce two rare complications related to the laminar shelf of plate.</p><p>In the first case, we used the wider laminar shelf plate because the elevated lamina did not fit well into the usual laminar shelf. During follow-up, cord compression due to laminar shelf was observed.</p><p>And in the second case, the laminar shelf of plate did not fit into the elevated lamina, so we inserted it with a little bit of force. But the patient’s symptom was not improved. On CT image, the inner cortical bone of the lamina was fractured.</p><p>To prevent these complications, surgeons need to consider the thickness of the lamina and the size of the laminar shelf before surgery.</p>