Amy G Mell1, Brian L Childress, Richard E Hughes. 1. Orthopaedic Research Laboratories, MedSport, and Department of Orthopaedic Surgery, University of Michigan, Ann Arbor, MI 48106-0391, USA.
Abstract
OBJECTIVES: To test the hypotheses that (1) wearing a flexible wrist splint while taking an object from a box increases known postural risk factors for shoulder disorders and (2) that the height of the front of the box modulates the effect on shoulder kinematics of wearing a wrist splint. DESIGN: A controlled laboratory experiment with 2 factors (splint wearing, box height). SETTING: Human performance laboratory. PARTICIPANTS: Ten consecutive healthy volunteers (5 men, 5 women; age range, 19-32 y). INTERVENTIONS: Experimental manipulation of wrist immobilization and box height. MAIN OUTCOME MEASURES: Humeral plane of elevation, humeral elevation, and humeral axial rotation. RESULTS: Wearing a wrist splint increased the maximum humeral elevation angle (P<.001), and the height of the barrier also increased the maximum humeral elevation angle (P<.001). The average difference in maximum humeral elevation between the splint and the no splint conditions was 6.8 degrees . CONCLUSIONS: Wearing a wrist splint while performing a job that requires removing objects from a box can increase risk factors for shoulder disorders. Workplace analysis should be performed to avoid secondary injuries before a patient wearing a wrist splint returns to work.
OBJECTIVES: To test the hypotheses that (1) wearing a flexible wrist splint while taking an object from a box increases known postural risk factors for shoulder disorders and (2) that the height of the front of the box modulates the effect on shoulder kinematics of wearing a wrist splint. DESIGN: A controlled laboratory experiment with 2 factors (splint wearing, box height). SETTING:Human performance laboratory. PARTICIPANTS: Ten consecutive healthy volunteers (5 men, 5 women; age range, 19-32 y). INTERVENTIONS: Experimental manipulation of wrist immobilization and box height. MAIN OUTCOME MEASURES: Humeral plane of elevation, humeral elevation, and humeral axial rotation. RESULTS: Wearing a wrist splint increased the maximum humeral elevation angle (P<.001), and the height of the barrier also increased the maximum humeral elevation angle (P<.001). The average difference in maximum humeral elevation between the splint and the no splint conditions was 6.8 degrees . CONCLUSIONS: Wearing a wrist splint while performing a job that requires removing objects from a box can increase risk factors for shoulder disorders. Workplace analysis should be performed to avoid secondary injuries before a patient wearing a wrist splint returns to work.
Authors: Cristina Piazza; Matteo Rossi; Manuel G Catalano; Antonio Bicchi; Levi J Hargrove Journal: IEEE Trans Neural Syst Rehabil Eng Date: 2020-08-17 Impact factor: 4.528
Authors: Anouk M Oosterwijk; Marianne K Nieuwenhuis; Hennie J Schouten; Cees P van der Schans; Leonora J Mouton Journal: PLoS One Date: 2018-08-01 Impact factor: 3.240
Authors: Matthew J Major; Rebecca L Stine; Craig W Heckathorne; Stefania Fatone; Steven A Gard Journal: J Neuroeng Rehabil Date: 2014-09-06 Impact factor: 4.262