Olerud-Molander Ankle Score
Original Editor - Carina Therese Magtibay
Top Contributors - Carina Therese Magtibay and Uchechukwu Chukwuemeka
Objective
The Olerud-Molander Ankle Score (OMAS) is a self-reported outcome measure that assesses the symptoms and function of a patient following an ankle fracture. This scoring system was developed by Olerud and Molander in 1984 as a fast, easy and objective way to determine the impact of ankle fracture on the patient's current status.[1]
Intended Population
Individuals who have had an ankle fracture.
Method of Use
OMAS uses a summated rating scale format and consists of 9 questions:
- pain (0 to 25)
- stiffness (0 to 10)
- swelling (0 to 10)
- stair climbing (0 to 10)
- running (0 to 5)
- jumping (0 to 5)
- squatting (0 to 5)
- use of supports (0 to 10)
- work/activity level (0to20)
The highest possible score is 100 and higher scores indicate better outcomes
Evidence
Reliability
In a Swedish study of OMAS among people surgically treated after an ankle fracture, the following conclusions were made:[2]
- Test-retest reliability = very high
- rho = 0.95
- ICC = 0.94
- Standard error of measure = Low
- SEM = 4.4 points
- SEM% = 5.8%
- Internal consistency = 0.76
Validity
Concurrent validity using Foot and Ankle Outcome Score (FAOS) and Global Self-Rating Function (GSRF) = high[2]
- correlation coefficients versus the five subscales of FAOS ranged from rho = 0.80 to 0.86.
- There were significant differences between GSRF groups “good”, “fair” and “poor” (p < 0.001) at both the six-month and the 12-month follow-up.
Responsiveness
The effect size between results from 6-month and 12-month follow-up = 0.4. This finding is considered as medium, suggesting that there was a noticeable difference in ankle function between the two time-points, but it was not extremely large.[2]
Links
Olerud-Molander Ankle Score Questionnaire
References
- ↑ Olerud C, Molander H. A scoring scale for symptom evaluation after ankle fracture. Archives of orthopaedic and traumatic surgery. 1984 Sep;103:190-4.
- ↑ 2.0 2.1 2.2 Nilsson GM, Eneroth M, Ekdahl CS. The Swedish version of OMAS is a reliable and valid outcome measure for patients with ankle fractures. BMC musculoskeletal disorders. 2013 Dec;14:1-8.