Abstract
Evaluate the inter- and intra- observer reliability of the Modified Radiographic Union Score for Tibia Fractures (mRUST) and the effect of rater experience in evaluation of femoral fractures. Retrospective Cohort Study. Setting: Single Level I Trauma CenterPatients/Participants: Patients 18-55 years of age with a femur shaft fracture. Intramedullary nail (IMN) fixation. Inter- and intra- observer reliability using Intraclass Correlation Coefficient (ICC). The overall interobserver reliability was 0.96. Among fellowship trained evaluators, interobserver reliability was 0.94, and it was 0.92 among trainees. The overall intraobserver reliability was 0.98. The intraobserver reliability was 0.97 among fellowship trained evaluators and 0.96 for trainees. These results show high inter- and intraobserver reliability of mRUST in evaluation of radiographic healing for femur shaft fractures treated with IMN. This high reliability was further demonstrated throughout different postoperative healing time frames. Additionally, mRUST appears to be reliable when utilized both by trainees and experienced surgeons for evaluation of femur shaft fractures. Diagnostic Level I. See Instructions for Authors for a complete description of levels of evidence.
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