Objective: To calculate the incidence of symptomatic iliosacral (SI) screw removal following pelvic trauma and to determine the clinical impact of the secondary intervention.
Design: Retrospective chart review.
Setting: Level 1 and Level 2 trauma centers.
Patients: Four hundred seventy-one consecutive patients undergoing percutaneous posterior pelvic fixation over 10 years, with 7 excluded for spinopelvic fixation,and 7 excluded due to age <16 year old.
Intervention: Implant removal.
Main Outcome Measurement: Secondary intervention.
Results: A total of 25/457 patients underwent screw removal (5.4%). Two patients were lost to follow-up, leaving 23 for analysis. There were 13 male patients and 10 female patients. There were 13 SI and 10 trans-sacral screws removed. Four screws were loose before removal (17%). Average time to screw removal was 10.7 months (4-26 minutes). Fifteen (83.3%) patients had subjective improvement, and 3 (16.7%) had no notable improvement.
Conclusion: The incidence of symptomatic SI screws necessitating removal is low (5.4%). When removed, there is a high likelihood (83%) that the secondary intervention will result in subjective symptomatic improvement. Routine screw removal is unnecessary because most patients tolerate the implants without symptoms necessitating subsequent surgery.
Level Of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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