The effect of arm position on the ultrasonographic measurements of the acromion-greater tuberosity distance
| Autor: | Thea Gorman, Clare Bourke, Hasina Patel, Praveen Kumar, Jane Flanders |
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| Rok vydání: | 2013 |
| Předmět: |
Adult
Male medicine.medical_specialty Shoulder Elbow Posture Physical Therapy Sports Therapy and Rehabilitation Patient Positioning Young Adult Forearm Predictive Value of Tests medicine Humans Acromion Stroke Ultrasonography Orthodontics Observer Variation business.industry Shoulder Dislocation Repeated measures design Reproducibility of Results Middle Aged medicine.disease Healthy Volunteers Biomechanical Phenomena body regions medicine.anatomical_structure Predictive value of tests Physical therapy Female business Arm position Greater Tuberosity |
| Zdroj: | Physiotherapy theory and practice. 30(3) |
| ISSN: | 1532-5040 |
| Popis: | Ultrasonographic measurements of acromion-greater tuberosity (AGT) distance have shown to be reliable and valid in the assessment of glenohumeral subluxation (GHS) in patients with stroke. The primary aim of this study was to investigate the effect of arm positions on ultrasonographic measurements of AGT distance. The secondary aim was to assess the intra-rater reliability of AGT distance in different arm positions. Sixteen healthy individuals with a mean age 28 standard deviation 11 years who gave informed written consent were recruited. Four clinically relevant arm positions for patients with stroke were selected: (1) arm hanging freely by the side; (2) forearm on a pillow placed on participants lap with the elbows at 90° flexion and the forearms in pronation; (3) as in position 2, but with the elbow supported and (4) shoulder in 10° of abduction and 60° of flexion with the arm resting on a pillow placed on a table. Repeated measures analysis of variance showed a statistically significant effect of arm positions on mean AGT measurements for the right (F (3, 45) = 51.2666, p 0.001, effect size = 0.774) and left (F (3, 45) = 51.883, p 0.001, effect size = 0.776) shoulders. AGT distance was significantly reduced in positions 3 and 4. Within-session intra-class correlation coefficients and the minimum detectable change values ranged from 0.94 to 0.97 and 0.1 to 0.2 cm, respectively, for all four positions. This preliminary study corroborates that supported arm position does reduce the AGT distance in healthy people suggesting ultrasonographic technique has potential to provide objective measurements in clinical management of patients with GHS. |
| Databáze: | OpenAIRE |
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