Please use this identifier to cite or link to this item:
https://scholarbank.nus.edu.sg/handle/10635/67138
DC Field | Value | |
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dc.title | Limited forearm motion compensated by thoracohumeral kinematics when performing tasks requiring pronation and supination | |
dc.contributor.author | Pereira, B.P. | |
dc.contributor.author | Thambyah, A. | |
dc.contributor.author | Lee, T. | |
dc.date.accessioned | 2014-06-17T09:44:54Z | |
dc.date.available | 2014-06-17T09:44:54Z | |
dc.date.issued | 2012-05 | |
dc.identifier.citation | Pereira, B.P.,Thambyah, A.,Lee, T. (2012-05). Limited forearm motion compensated by thoracohumeral kinematics when performing tasks requiring pronation and supination. Journal of Applied Biomechanics 28 (2) : 127-138. ScholarBank@NUS Repository. | |
dc.identifier.issn | 10658483 | |
dc.identifier.uri | http://scholarbank.nus.edu.sg/handle/10635/67138 | |
dc.description.abstract | This study investigates the altered thoracohumeral kinematics when forearm rotation is restricted while performing five activities requiring pronation and supination. Two splints simulated both a fixed-supinated or fixed-neutral forearm in six healthy subjects; the three-dimensional coupled relationship among motion about the forearm, elbow, and shoulder were analyzed. In using a screwdriver, the normal range of forearm rotation of 77.6° (SD = 30.8°) was reduced in the fixed-supinated to 11.3° (SD = 2.9°) and fixed-neutral to 18.2° (SD = 6.2°). This restriction from the fixed-supinated and fixed-neutral forearms was compensated at the shoulder by a significant increase in the total range of (1) ad/abduction by 57.3° and 62.8° respectively (p < .001), (2) forward-reverse flexion (24.3° and 18.2° respectively; p < .05) and (3) internal-external rotation (37.1° and 44.2° respectively; p < .001). A similar result was demonstrated for the doorknob activity. The elbow did not significantly contribute to forearm rotation (p = .14), and is believed to be due to the elbow axis being orthogonal and oblique to the forearm axis. For open kinetic-chain activities, with a fixed-supinated forearm performing there was a significant coupled increase in ad/abduction (p < .05) and int/external rotation (p < .05) for the phone and feeding tasks, with the phone task also having a significantly increased forward shoulder flexion (p < .05). For the fixed-neutral forearm, significant compensatory movement was only seen in the feeding task with increased ad/abduction and internal-external shoulder rotation (p < .05) and the card inserting task with increased ad/abduction and forward-reverse shoulder flexion. Limited forearm function requires compensatory motion from adjacent joints to perform activities that require pronation and supination. This study quantifies the compensatory mechanism about the shoulder in a forearm limited in prosupination. © 2012 Human Kinetics, Inc. | |
dc.source | Scopus | |
dc.subject | Activities of daily living | |
dc.subject | Compensatory mechanisms | |
dc.subject | Forearm biomechanics | |
dc.subject | Limited forearm rotation | |
dc.subject | Shoulder kinematics | |
dc.type | Article | |
dc.contributor.department | BIOENGINEERING | |
dc.description.sourcetitle | Journal of Applied Biomechanics | |
dc.description.volume | 28 | |
dc.description.issue | 2 | |
dc.description.page | 127-138 | |
dc.description.coden | JABOE | |
dc.identifier.isiut | NOT_IN_WOS | |
Appears in Collections: | Staff Publications |
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