Predictors for outlier results after radial head replacement for acute complex elbow instability

Area of Science:

• Orthopedic Surgery
• Trauma Surgery
• Reconstructive Surgery

Background:

• Radial head replacement (RHR) is a standard treatment for comminuted radial head fractures.
• While generally successful, some patients experience persistent pain and functional deficits.
• This study investigates factors contributing to outlier outcomes in RHR for acute trauma.

Purpose of the Study:

• Identify patients with unfavorable outcomes after RHR for acute trauma.
• Analyze preoperative, intraoperative, and postoperative factors associated with poor results.
• Determine predictors of suboptimal clinical outcomes following RHR.

Main Methods:

• Retrospective analysis of 134 patients undergoing RHR for acute complex elbow instability.
• Oxford Elbow Score (OES) used to identify patients in the lowest quartile (p25).
• Univariate and multivariate analyses compared p25 patients to p75, assessing demographic, diagnostic, and outcome variables.

Main Results:

• Patients with p25 OES were younger, experienced higher energy trauma, and more frequently had terrible triad or Essex-Lopresti injuries.
• Younger age and female sex were significant predictors of belonging to the p25 OES group.
• Poorer outcomes correlated with higher postoperative pain, worse DASH and MEPS scores, and lower range of motion.

Conclusions:

• RHR for complex elbow instability typically yields good results, but certain factors predict poorer outcomes.
• Younger patients, female sex, high-energy trauma, and specific injury patterns (terrible triad, longitudinal instability) are associated with lower OES scores.
• Preoperative identification of these risk factors may guide treatment strategies and patient expectations.