John Charles Snow1, Kyle Simpson2, Proton Rahman3, Samuel Howarth4, Diana De Carvalho5. 1. Division of Community Health and Humanities, Faculty of Medicine, Memorial University of Newfoundland, 300 Prince Philip Dr, St. John's, NL, A1B 3V6, Canada. 2. Private Practice, Kitchener, ON, N2M 1Y5, Canada. 3. Discipline of Medicine, Division of Rheumatology, Faculty of Medicine, Memorial University of Newfoundland, St. John's, NL, A1B 3V6, Canada. 4. Division of Research and Innovation, Canadian Memorial Chiropractic College, Toronto, ON, M2H 3J1, Canada. 5. Division of Community Health and Humanities, Faculty of Medicine, Memorial University of Newfoundland, 300 Prince Philip Dr, St. John's, NL, A1B 3V6, Canada. ddecarvalho@mun.ca.
Abstract
BACKGROUND: Limitations in spinal mobility are a characteristic feature of Axial Spondyloarthritis. Current clinical measurements of spinal mobility have shown low criterion-concurrent validity. This study sought to evaluate criterion-concurrent validity for a clinically feasible measurement method of measuring spine mobility using tri-axial accelerometers. METHODS: Fifteen radiographic-Spondyloarthritis patients were recruited for this study. Two postural reference radiographs, followed by three trials in forward, left and right lateral bending were taken. For all trials, three measurements were collected: tape (Original Schober's, Modified Schober's, Modified-Modified Schober's, Lateral Spinal Flexion Test and Domjan Test), followed immediately by synchronized radiograph and accelerometer measurements at end range of forward and bilateral lateral flexion. The criterion-concurrent validity of all measurement methods was compared to the radiographic measures using Pearson's correlation coefficients. A Bland-Altman analysis was conducted to assess agreement. RESULTS: In forward bending, the accelerometer method (r = 0.590, p = 0.010) had a stronger correlation to the radiographic measures than all tape measures. In lateral bending, the Lateral Spinal Flexion tape measure (r = 0.743, p = 0.001) correlated stronger than the accelerometer method (r = 0.556, p = 0.016). The Domjan test of bilateral bending (r = 0.708, p = 0.002) had a stronger correlation to the radiographic measure than the accelerometer method. CONCLUSIONS: Accelerometer measures demonstrated superior criterion-concurrent validity compared to current tape measures of spinal mobility in forward bending. While a moderate correlation exists between accelerometer and radiographs in lateral bending, the Lateral Spinal Flexion Test and Domjan Test were found to have the best criterion-concurrent validity of all tests examined in this study.
BACKGROUND: Limitations in spinal mobility are a characteristic feature of Axial Spondyloarthritis. Current clinical measurements of spinal mobility have shown low criterion-concurrent validity. This study sought to evaluate criterion-concurrent validity for a clinically feasible measurement method of measuring spine mobility using tri-axial accelerometers. METHODS: Fifteen radiographic-Spondyloarthritispatients were recruited for this study. Two postural reference radiographs, followed by three trials in forward, left and right lateral bending were taken. For all trials, three measurements were collected: tape (Original Schober's, Modified Schober's, Modified-Modified Schober's, Lateral Spinal Flexion Test and Domjan Test), followed immediately by synchronized radiograph and accelerometer measurements at end range of forward and bilateral lateral flexion. The criterion-concurrent validity of all measurement methods was compared to the radiographic measures using Pearson's correlation coefficients. A Bland-Altman analysis was conducted to assess agreement. RESULTS: In forward bending, the accelerometer method (r = 0.590, p = 0.010) had a stronger correlation to the radiographic measures than all tape measures. In lateral bending, the Lateral Spinal Flexion tape measure (r = 0.743, p = 0.001) correlated stronger than the accelerometer method (r = 0.556, p = 0.016). The Domjan test of bilateral bending (r = 0.708, p = 0.002) had a stronger correlation to the radiographic measure than the accelerometer method. CONCLUSIONS: Accelerometer measures demonstrated superior criterion-concurrent validity compared to current tape measures of spinal mobility in forward bending. While a moderate correlation exists between accelerometer and radiographs in lateral bending, the Lateral Spinal Flexion Test and Domjan Test were found to have the best criterion-concurrent validity of all tests examined in this study.
Entities:
Keywords:
Accelerometry; Physical examination; Radiography; Range of motion articular; Spine; Spondylarthritis
Authors: Sofia Ramiro; Robert B M Landewé; Désirée van der Heijde; Carmen Stolwijk; Maxime Dougados; Filip van den Bosch; Astrid van Tubergen Journal: Arthritis Care Res (Hoboken) Date: 2015-11 Impact factor: 4.794