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- Title
THE INTER AND INTRAOBSERVER RELIABILITY OF MUSCULOSKELETAL ULTRASOUND ASSESSMENT OF ANTERIOR TALOFIBULAR LIGAMENT & ANKLE MUSCLES.
- Authors
OZGUL, BAHAR; POLAT, MINE GULDEN; STARBUCK, CHELSEA; ABDEEN, RAWAN; NESTER, CHRISTOPHER
- Abstract
Purpose: Although function of subjects with chronic ankle instability (CAI) has been examined, structural analysis by Musculoskeletal Ultrasound (MSUS) imaging of ligaments and muscles surrounding the ankle is limited. The aim of this study was to investigate the inter-intraobserver reliability of measuring characteristics of selected ankle structures in healthy subjects. Methods: Eleven healthy participants were assessed by two observers (an experienced sonographer and inexperienced certificated operator). Ultrasound images were collected of the ATFL in two positions ( neutral and stressed) to examine length. Images of four ankle muscles (gastrocnemius medialis (GM), tibialis anterior (TA), Peroneus Longus (PL) and Peroneus Brevis (PB) were collected. Thickness was measured for TA and GM, whilst thickness and cross sectional area (CSA) were measured for the PL and PB. One observer repeated the measurements a week later. ImageJ software was used to measure length, thickness and CSA. An average of three measurements was calculated for each assessment. Intraclass Correlation Coefficient (ICC) and Limits of Agreement (LoA) were used to analyse reliability. Results: Inter-observer reliability was excellent for all structures (ICC2,3=0.913-0,983). Intra-observer reliability shows excellent agreement for all structures (ICC3,1=0.917-0.983) except GM which showed moderate agreement (ICC3,1=0.815). LoA, relative to structure size, ranged from 1.38% to 6.88% for interreliability and from 0.07% to 5.79% for intrareliability. Conclusions: This study shows a high level of inter-intraobserver reliability in measuring length of the ATFL, thickness of GM, TA and thickness & CSA of Peroneals. Future research has been planned to investigate clinical use of MSUS in CAI.
- Subjects
ANKLE; ULTRASONIC imaging; TIBIALIS anterior; LIGAMENTS; LEG muscles; INTER-observer reliability; STRUCTURAL analysis (Engineering)
- Publication
Journal of Exercise Therapy & Rehabilitation, 2018, Vol 5, pS13
- ISSN
2148-8819
- Publication type
Article