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A total disc arthroplasty (TDA) is a surgical procedure that involves the placement of an artificial disc in the cervical spine, specifically targeting three or more intervertebral levels. This procedure is performed through an anterior approach, meaning the incision is made at the front of the neck, allowing direct access to the cervical vertebrae. The primary goal of TDA is to replace a severely diseased or damaged intervertebral disc, which can lead to pain, reduced mobility, and neurological symptoms due to nerve root or spinal cord compression. The artificial disc serves as a prosthetic device that mimics the natural function of a healthy disc, preserving motion at the affected disc space, unlike spinal fusion, which permanently immobilizes that segment of the spine. During the procedure, a discectomy is performed, which involves the removal of the damaged disc material. Additionally, end plate preparation is carried out to ensure that the surfaces of the vertebrae are adequately shaped and prepared for the insertion of the artificial disc. This preparation may include osteophytectomy, which is the removal of bone spurs that could be compressing nearby nerves or the spinal cord, as well as microdissection to carefully separate and protect the surrounding nerves and blood vessels. The procedure is intricate and requires careful dissection of the soft tissues of the neck, retraction of the esophagus, and meticulous handling of the cervical structures to minimize complications and ensure optimal outcomes for the patient.
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