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3D motion analysis of the glenohumeral joint: a comparison of maximal vs. functional range of motion

Lovern, B, Stroud, L., Feran, N., Evans, Samuel Lewin, Evans, R. and Holt, Catherine Avril 2008. 3D motion analysis of the glenohumeral joint: a comparison of maximal vs. functional range of motion. Presented at: British Elbow and Shoulder Society (BESS2008), Liverpool, UK, 4-6 June, 2008.

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Abstract

Three-dimensional motion analysis techniques were used to compare the maximum range of glenohumeral motion with the functional range of glenohumeral motion required to perform everyday activities. In-house ethical approval was obtained for the study. Five healthy subjects, 10 healthy shoulders, (M:F 2:3 mean age 23 ± 1 year) were recruited. Eighteen retro-reflective markers were attached to bony landmarks of the trunk and upper limb. The trajectories of the markers were tracked by eight infra-red cameras with a sampling rate of 60Hz. Joint rotations were calculated according to the recommendations of the International Society of Biomechanics. Each shoulder was assessed separately for full range of motion (ROM) and 10 functional tasks of daily living (with and without loading) designed by the Newcastle Shoulder Group in 2004. Comparisons were made between the full ROM and functional ROM and also between dominant and non-dominant shoulders. The full range of glenohumeral motion was 96 ± 4.8˚. Seventy-nine percent of max ROM was used in touching the back of the head. Fifty-nine percent of max ROM was used in combing the opposite side of the head. Seventy one percent of max ROM was used in lifting a weight (20N) above head height. No significant differences in ROMs were observed between dominant and non dominant shoulders. A quantitative assessment of glenohumeral motion is reported. While maximum ROM is commonly assessed, this is not representative of a patient's ability to perform everyday functional tasks. This study objectively explores the motion profiles of the shoulder complex and highlights some of the potential benefits to everyday clinical practice. Further areas for development include the validation and standardisation of a representative range of functional tasks and the application of these techniques to patient cohorts.

Item Type: Conference or Workshop Item (Paper)
Schools: Centre for Advanced Manufacturing Systems At Cardiff (CAMSAC)
Engineering
Last Modified: 07 Jan 2018 20:16
URI: http://orca.cf.ac.uk/id/eprint/21148

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