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Development and validation of the unifying elective orthopaedic score (UnEOS). A pilot study
Efthymios Iliopoulos1, Natasha Hossain1, Richard Freeman1
1Brighton and Sussex University Hospitals, NHS Trust, Brighton, UK.
Journal of Clinical Orthopaedics and Trauma
|January 30, 2020
Summary
The new UnEOS score offers a simple, quick, and valid patient-reported outcome measure (PROM) for elective orthopaedic surgery, applicable across various sites and conditions. This tool enhances patient satisfaction assessment in orthopaedics.
Area of Science:
- Orthopaedic surgery outcomes research
- Patient-reported outcome measures (PROMs) development
- Health services research in orthopaedics
Background:
- Patient-reported outcome measures (PROMs) are crucial in orthopaedics, but existing scores are often pathology-specific, complex, and time-consuming.
- There is a need for a versatile and user-friendly PROM for elective orthopaedic procedures.
- Current PROMs may not adequately capture patient satisfaction across diverse orthopaedic conditions.
Purpose of the Study:
- To develop and pilot a novel orthopaedic score, the UnEOS questionnaire, for elective operations.
- To create a simple, rapid, and universally applicable measure of patient satisfaction.
- To assess the reliability and validity of the UnEOS score in a pilot cohort.
Main Methods:
- The UnEOS questionnaire, comprising 16 items across Symptoms, Function, Mental Status (pre- and post-operative), and a post-operative Satisfaction dimension, was developed.
- A pilot study enrolled patients undergoing elective foot and ankle surgery.
- Patients completed the UnEOS and FADI questionnaires pre- and post-operatively.
Main Results:
- 181 patients with varied foot and ankle pathologies completed the questionnaires.
- The UnEOS scale demonstrated excellent internal consistency (Cronbach's Alpha = 0.87) and good subscale reliability.
- Strong correlations were observed between UnEOS and FADI scores, supporting its validity (Spearman's Rho = 0.79).
Conclusions:
- The UnEOS score is a reliable, valid, and user-friendly PROM for elective orthopaedic surgery.
- Its applicability is not limited by anatomical site or specific pathology.
- Further validation is recommended to establish a Unified Elective Orthopaedic score.

