Analysis of the interlaminar window of lumbar vertebrae using morphometry
DOI:
https://doi.org/10.48047/wcypgk05Keywords:
Lumbar vertebrae, Interlaminar space, Spinous process, Middle of the lamina, Articular processAbstract
Introduction : The present study was conducted to precisely observe the morphometric dimensions of interlaminar space or window of the lumbar spine. The anatomy of interlaminar space holds paramount importance as it provides a passage or acts as a gateway to underlying vital structures such as spinal nerves, intervertebral disc, and spinal cord ensheathed by meningeal covering.
Materials & Methods : The present study was carried out on 20 vertebral columns (100 lumbar vertebrae). We measured the interlaminar space at three locations : near the spinous process, the middle of the lamina, and the articular process. We also measured the horizontal distance from the tip of the spine to the widest space of the interlaminar window.
Results: The widest interlaminar window was observed at the middle of the lamina. Neurosurgeons could utilize this window for undertaking different types of spinal surgeries. Horizontal distance was measured from the tip of the spine to the middle of the lamina, which could help determine the area of access for spinal surgeries.
Conclusions: In patients with complex spinal anatomy where patient positioning becomes difficult, the interlaminar space at the middle of the lamina could be used by anesthesiologists to give central neuraxial block as the midline approach in these conditions is very difficult. Since this area has the maximum space in the interlaminar window, the morbidity, mortality, pain, and complications related to multiple punctures could significantly be reduced, resulting in better patient care
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