Effects of Wrist-extension Orthosis on Shoulder and Scapular Muscle Activities during Simulated Assembly Tasks

Yoo, In-Gyu; Jung, Min‐Ye; Jeon, Hye‐Seon; Liu, Jin

doi:10.2486/indhealth.48.108

Cited by 27 publications

(30 citation statements)

References 21 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the upper trapezius, reference contractions were obtained while the participant held a 2 kg weight in each hand with the upper arms elevated to 90 in the scapular plane, elbows fully extended and forearms pronated (Mathiassen et al 1995). For the anterior deltoid, participants held a 2 kg weight in each hand with the upper arms flexed forward to 90 of elevation and the elbows fully extended (Cook et al 2004;Yoo et al 2010;Rota et al 2013). Three repetitions of each reference contraction were performed, with a 1-min rest between repetitions.…”

Section: Surface Electromyography Instrumentation and Proceduresmentioning

confidence: 99%

Neck and shoulder muscle activity among ophthalmologists during routine clinical examinations

Fethke

Schall

Determan

et al. 2015

International Journal of Industrial Ergonomics

View full text Add to dashboard Cite

Section: Surface Electromyography Instrumentation and Proceduresmentioning

confidence: 99%

Neck and shoulder muscle activity among ophthalmologists during routine clinical examinations

Fethke

Schall

Determan

et al. 2015

International Journal of Industrial Ergonomics

View full text Add to dashboard Cite

“…For example, increases in forearm muscle activity during tasks requiring manipulation indicate that wrist orthosis wearers sometimes "fight against the [orthosis] to achieve the necessary wrist angle or transfer these postural deviations to the elbow, shoulder, or even the torso," potentially doing more harm than good [4][5]. Wrist orthoses have been linked to increases in shoulder muscle activation [5][6][7] and to deviations in shoulder position [8][9][10]. Although orthoses users have been shown to acclimatize somewhat to orthoses, many of the previously cited studies expressed concern that wrist JRRD, Volume 53, Number 6, 2016 orthoses contribute to disorders of the kinematic chain (wrist, elbow, shoulder, trunk) [9,11].…”

Section: Introductionmentioning

confidence: 99%

The effect of common wrist orthoses on the stiffness of wrist rotations

2016

View full text Add to dashboard Cite

Abstract-Wrist orthoses (also known as splints, braces, or supports) are commonly used to support or restrict the motion of a weak or injured wrist. These orthoses generally function by stiffening the wrist joint. Therefore, choosing the proper orthosis (or improving orthoses) requires that we understand their stiffness properties. In this study, we present a method for measuring the stiffness of wrist orthoses, and we apply this method to 12 of the most common wrist orthoses. We found similarities and differences between these orthoses, indicating that different orthoses have different effects on the wrist joint and, presumably, on wrist behavior. In particular, all six ortho ses with a stay on the volar side or the volar and dorsal sides added a significant amount of stiffness to the wrist joint. In contrast, only one of three orthoses with a stay on the dorsal side and none of the three orthoses without stays exhibited a significant amount of stiffness, calling into question their abil ity to support the wrist joint. This work lays a foundation for future studies investigating the effect of wrist orthosis stiffness on wrist behavior and how wrist orthosis stiffness can be designed to produce behavior that facilitates healing.

show abstract

“…Yu et al13 ) investigated wrist movements in their study, but the movements were limited to turning screws which did not provide data for various movements. Their analysis was based on EMG data, which only measured the use of muscles.…”

Section: Discussionmentioning

confidence: 99%

3D motion analysis of the wrist splint effect to wrist joint movement

Shin

Park

2017

J Phys Ther Sci

View full text Add to dashboard Cite

[Purpose] This study aimed to investigate the degree of straightness of the wrist joint, depending on the use of a wrist splint while opening a bottle cap. Its results may provide data for later studies on preventing accidents at workplaces and improving efficiency. [Subjects and Methods] Thirty Male and Female in their twenties who did not have hand-related diseases, fractures, or history that included neurological impairments associated with the hand were selected as subjects of the study. Wrist splints were made to fit the hand and lower arm of each subject. Evaluation assignments were carried out without and with the splints after 10 minutes of rest. To analyze the wrist movement in opening the bottle cap, a three-dimensional movement analyzing system by Zebris was used. [Results] Wrist angle decreased while opening caps of four different diameters while wearing splints, but not when splints were not worn. This means that wearing a splint may aid weakened wrist muscles. [Conclusion] Future studies should be conducted among subjects with damaged wrist muscles and evaluate the subjects in actual workplaces to obtain more objective and more valid data.

show abstract

Effects of Wrist-extension Orthosis on Shoulder and Scapular Muscle Activities during Simulated Assembly Tasks

Cited by 27 publications

References 21 publications

Neck and shoulder muscle activity among ophthalmologists during routine clinical examinations

Neck and shoulder muscle activity among ophthalmologists during routine clinical examinations

The effect of common wrist orthoses on the stiffness of wrist rotations

3D motion analysis of the wrist splint effect to wrist joint movement

Contact Info

Product

Resources

About