Injury to major abdominal vessels during posterior lumbar interbody fusion. A case report and review of the literature.

Background Context: Numerous cases of injury to major abdominal vessels during the excision of a lumbar herniated disc have been reported, but no cases of injury during interbody fusion by a posterior approach have been described.

Purpose: To report on an injury to common iliac vessels during a posterior lumbar interbody fusion (PLIF) and discuss the causes and possible preventive measures.

Study Design: A unique case report and a review of the literature.

Methods: The hospital chart and autopsy report of a single patient were analyzed.

Results: A 52-year-old woman with L4-L5 disc degeneration underwent PLIF. During scraping of the vertebral end plates, there was a sudden increase in blood flow from the disc space, however not copious, with no changes of vital parameters. When the patient was placed supine, severe hypotension and abdominal distension led to strongly suspect a lesion to abdominal vessels. At laparotomy, carried out by a vascular surgeon, a vast retroperitoneal hematoma was evacuated and the vascular lesions were repaired. Postoperatively, the patient continued to lose blood from the abdominal drains and after 4 hours, she was reoperated by another vascular surgeon, who found a diffuse hemorrhage from the small vessels in the surgical field. Soon after the surgery the patient died.

Conclusions: The lesions were produced by a shaver used for scraping the vertebral end plates. The absence of abundant bleeding from the disc space was possibly because of the compression of the iliac vessels by the pads of the frame on which the patient was lying. The causes of the lesions and possible prevention of similar injuries are analyzed.