Clinical Outcomes of Straddle Fracture Patterns: A Retrospective Multicenter Analysis Based on a New Descriptive...

Area of Science:

• Orthopedics
• Trauma Surgery
• Pelvic Fracture Classification

Background:

• Straddle fractures of the pubic rami are severe pelvic injuries often undertreated due to classification limitations.
• Existing systems inadequately address anterior pelvic ring involvement, crucial for stability.
• A novel framework integrating anterior and posterior pelvic ring components is needed.

Purpose of the Study:

• To introduce and validate a new classification system for straddle fractures.
• To analyze fracture patterns and clinical outcomes using this integrated framework.
• To assess the reliability and clinical relevance of the proposed grading system.

Main Methods:

• Retrospective multicenter cohort study of 203 patients with straddle fractures.
• Fractures classified into 3 grades based on anterior/posterior involvement and displacement.
• Radiological and functional outcomes assessed; logistic regression identified complication predictors.

Main Results:

• The proposed framework showed high treatment concordance (86-88%) and substantial inter/intraobserver reliability (κ=0.65, κ=0.73).
• Anatomic reduction rates decreased with increasing fracture grade (78.7% for Grade I vs. 45.5% for Grade III).
• Complication rates increased with fracture grade (6.4% for Grade I vs. 22.1% for Grade III), with age, ISS, and grade predicting complications.

Conclusions:

• The new classification framework is reproducible and clinically relevant for stratifying straddle fracture severity and prognosis.
• It demonstrates strong reliability and correlates fracture grade with radiological alignment and complication risk.
• Higher-grade fractures correlate with poorer outcomes, emphasizing individualized management and need for further validation.