Picture of wind turbine against blue sky

Open Access research with a real impact...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs.

The Energy Systems Research Unit (ESRU) within Strathclyde's Department of Mechanical and Aerospace Engineering is producing Open Access research that can help society deploy and optimise renewable energy systems, such as wind turbine technology.

Explore wind turbine research in Strathprints

Explore all of Strathclyde's Open Access research content

Visual estimation of joint angles at the elbow

Abu-Rajab, R.B. and Marsh, A. and Young, D. and Rymaszewski, L.A. (2010) Visual estimation of joint angles at the elbow. European Journal of Orthopaedic Surgery and Traumatology, 20 (6). pp. 463-467. ISSN 1633-8065

[img]
Preview
PDF (strathprints018704.pdf)
strathprints018704.pdf

Download (217kB) | Preview

Abstract

The aim of this study was to assess the accuracy of visual estimation of elbow joint angles. A total of 116 observers (93 doctors and 23 physiotherapists) were shown 21 digital images of two arms in predeWned degrees of elbow Xexion on two separate occasions. They estimated the angle of Xexion to the nearest 5°. Only 70.8% of estimates were within +5°, although intra-observer agreement was good among all groups tested (ICC range 0.963- 0.983). Orthopaedic consultants and registrars were equivalent and statistically better at estimating the angles compared to senior house oYcers and physiotherapists (P < 0.001). Compared to the angles of 85 and 90°, all other angles were signiWcantly less likely to be estimated to within +5° (P < 0.001). In conclusion, visual estimation of joint angles at the elbow may not be desirable in cases where accurate serial assessment is required for clinical decision making. The use of a goniometer by an agreed standardized protocol is advised.