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Laminectomy, also known as lamina excision, is a surgical procedure aimed at alleviating back pain and addressing issues related to the spinal cord, spinal nerve roots, and/or cauda equina. This procedure involves the removal of the lamina, which is the bony structure that forms the posterior part of the vertebral arch. By excising the lamina, the surgeon can gain access to the spinal canal, allowing for exploration and decompression of the spinal structures. The procedure is particularly indicated for conditions such as spinal stenosis, where there is narrowing of the spinal canal that can lead to pressure on the spinal cord and nerves. During the operation, a posterior skin incision is made over the affected area of the spine, and the surrounding fat and muscle tissues are carefully retracted to expose the lamina. The excision of the lamina, along with the removal of the ligamentum flavum, facilitates the exploration of the spinal canal and the release of any adhesions that may be present. This procedure is performed on more than two contiguous vertebrae in the thoracic region, and if stabilization of the spine is necessary, an arthrodesis may be performed as a separate procedure. It is important to note that laminectomy procedures are categorized based on the spinal region involved, with specific codes assigned for cervical, thoracic, and lumbar segments.
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