Anterior lumbar interbody fusion (ALIF): a review of the procedure and associated complications

Degenerative disc disease and facet joint disease involving the lumbar spine are common in the aging population and are the most frequent causes of disability. Surgical interbody fusion of degenerative levels is the most common management technique. This is an effective treatment option to stabilize the spine and reduce mechanical pain and provides indirect decompression of the neural elements while restoring lordosis and correcting the deformity. Depending on the direction of the approach to the vertebral column, various techniques have been described. Anterior lumbar interbody fusion (ALIF) offers clear and wide visualization of the disc allowing the use of large interbody grafts, which provide a significant biomechanical advantage over other types of fusion. The transperitoneal approach is a much older technique and it is not commonly performed unless in isolated cases with extensive retroperitoneal scaring following multiple abdominal surgeries. The transperitoneal approach has been associated with higher rates of bowel injury, ileus, and retrograde ejaculation, and is limited at the L5–S1 segment, hence many spine surgeons favor a retroperitoneal approach. The major setback of ALIF is the need for great vessel mobilization. This manipulation of the vessels may lead to deep vein thrombosis and a direct vascular injury. This makes vascular anatomy studies in the preoperative stage invaluable in avoiding vascular injury. Other complications include possible injury to intraperitoneal and retroperitoneal organs, especially in patients with previous surgery and adhesions. Manipulation of the intestines causes postoperative ileus which lasts a few days. Sexual dysfunction in form of retrograde ejaculation is another complication seen in patients following ALIF and this has been attributed to injury to the superior hypogastric sympathetic nerves in the lower lumbar region.

This article reviews the ALIF procedure i. e., transperitoneal and retroperitoneal approaches, and the associated intraoperative, early, and late complications.

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