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The Achilles tendon Total Rupture Score (ATRS): development and validation
Katarina Nilsson-Helander1, Roland Thomeé, Karin Grävare Silbernagel
1Lundberg Laboratory for Orthopaedic Research, Department of Orthopaedics, Sahlgrenska University Hospital, Göteborg University, Sweden. ina.nilsson@telia.com
The American Journal of Sports Medicine
|December 13, 2006
Summary
A new patient-reported instrument, the Achilles tendon Total Rupture Score (ATRS), effectively measures outcomes after Achilles tendon rupture treatment. The ATRS demonstrates high reliability, validity, and sensitivity for clinical use.
Area of Science:
- Orthopedics
- Sports Medicine
- Rehabilitation Science
Background:
- A validated, patient-centered outcome measure is needed for total Achilles tendon rupture treatment.
- Current assessment tools may not fully capture patient-relevant outcomes.
Purpose of the Study:
- To develop and validate the Achilles tendon Total Rupture Score (ATRS), a novel patient-reported outcome instrument.
- To establish the reliability, validity, and responsiveness of the ATRS for Achilles tendon rupture patients.
Main Methods:
- Instrument development involved item generation, reduction, and validation.
- The ATRS was tested for validity, internal consistency (Cronbach's alpha), test-retest reliability (ICC), and responsiveness (effect size) in patients and healthy controls.
- Correlation analyses were performed against established foot and ankle outcome scores (FAOS, VISA-A-S).
Main Results:
- The ATRS demonstrated high internal consistency (Cronbach's alpha = 0.96) and excellent test-retest reliability (ICC = 0.98).
- Significant correlations were found between the ATRS and FAOS/VISA-A-S scores (r = 0.60-0.84).
- Responsiveness tests showed substantial effect sizes (0.87–2.21), indicating sensitivity to change.
Conclusions:
- The Achilles tendon Total Rupture Score (ATRS) is a reliable, valid, and sensitive patient-reported outcome measure.
- The ATRS is a valuable, self-administered tool for assessing outcomes in patients treated for total Achilles tendon rupture, with high clinical utility.
