Is Hydronephrosis a Complication after Anterior Lumbar Surgery?

Area of Science:

• Urology
• Neurosurgery
• Orthopedic Surgery

Background:

• Ureteral injury is a known complication of gynecologic surgery, potentially causing hydronephrosis.
• Anterior lumbar surgery (ALIF, TDR) involves visceral organ and great vessel mobilization.
• Midline ureteral retraction may compromise vascular supply, risking ischemia and stricture.

Purpose of the Study:

• To evaluate the incidence of hydronephrosis after anterior lumbar interbody fusion (ALIF) and total disk replacement (TDR).
• To assess the safety of ureteral retraction during anterior retroperitoneal spinal surgery.

Main Methods:

• Prospective follow-up study of 37 patients (85 potential candidates) who underwent ALIF or TDR.
• Renal ultrasound was used to evaluate for hydronephrosis post-operatively.
• Descriptive and inferential statistics were employed.

Main Results:

• No cases of hydronephrosis were detected in the study population.
• The prevalence of hydronephrosis was 0.0% (95% CI: 0.0% to 8.1%).

Conclusions:

• Ureteral retraction during ALIF and TDR does not lead to an increased risk of hydronephrosis.
• Anterior retroperitoneal approaches for spinal fusion and disk replacement appear safe concerning ureteral integrity.