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Post Post-Mobilization Films for LC1 Pelvic Ring Injuries: Follow up Stress Imaging Demonstrates Minimal Utility
Michelle M Lawson1, Frank L Rodgers, Duncan C Ramsey
1Department of Orthopaedics and Rehabilitation, Oregon Health and Science University, Portland, OR.
Objective:
To assess the utility of outpatient postmobilization radiographs in the nonoperative treatment of lateral compression type I (LC1) (OTA/AO 61-B1) pelvic ring injuries.
Design:
Retrospective series.
Setting:
Academic, Level 1 trauma center, 2008-2018.
Patients/Participants:
A series of 173 patients with nonoperatively treated LC1 pelvic ring injuries was identified. Of these, 139 received a complete set of outpatient pelvic radiographs with which to assess displacement.
Intervention:
Outpatient pelvic radiographs to assess additional fracture displacement and potential need for surgical intervention.
Main Outcome Measurements:
Rate of conversion to late operative intervention based on radiographic displacement.
Results:
No patient in this cohort received late operative intervention. A majority of the patients sustained incomplete sacral fractures (82.6%) and unilateral rami fractures (75.1%), and 92.8% demonstrated less than 10 mm of displacement on their final radiographs.
Conclusions:
There is a low utility of repeat outpatient radiographs of stable, nonoperative LC1 pelvic ring injuries as they do not undergo late displacement.
Level Of Evidence:
Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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