Effects of tool handle dimension and workpiece orientation and size on wrist ulnar/radial torque strength, usability and discomfort in a wrench task

Dianat, Iman; Rahimi, Soleyman; Nedaei, Moein; Jafarabadi, Mohammad Asghari; Oskouei, Ali E.

doi:10.1016/j.apergo.2016.10.004

Cited by 24 publications

(4 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Daily occupational activities, such as opening a jar or using hand tools, require good power grip strength and endurance for wrist torque tasks. 17 To put this into perspective, it has been shown that, for male industrial workers, the mean torque for ulnar deviation wrist tasks and hand-grip tasks necessitating power grip strength is 14.76 N•m (SD 5.66 N•m) and 73.80 N•m (SD 14.97 N•m), respectively. 18 Carse and colleagues 19 developed a load-measuring device that evaluated the forces applied when opening a jar.…”

Section: Discussionmentioning

confidence: 99%

“Hockey wrist”: dorsal ulnotriquetral ligament injury

Sandman

Boily

Martineau

2018

cjs

View full text Add to dashboard Cite

Background: Ulnar-sided wrist pain at the dorsal proximal triquetrum, especially during wrist pronation, flexion and radial deviation, is common in athletes, particularly ice hockey players. The purpose of this study was to evaluate in which position the dorsal ulnotriquetral ligament (DUTL) is placed under the greatest strain, the torque to failure and the injury pattern. We hypothesized that the DUTL is maximally strained with wrist flexion, pronation and radial deviation, and that, at failure, the ligament tears off the triquetrum. Methods:We performed a biomechanical study on 7 fresh frozen cadaveric upper extremities, with testing done on a wrist-movement stimulator to identify the position (45° of wrist flexion, 45° of wrist extension or neutral) that generated the highest and earliest strain increases in the DUTL. We performed load-to-failure testing, characterized the ligament's pattern of failure, and repaired and retested the DUTL using the same load-to-failure protocol.Results: The DUTL reached 3 N•m the earliest in 45° of wrist flexion (p = 0.02). The native DUTL failed at 0.35 N•m (standard deviation [SD] 0.13 N•m) per degree of angular stiffness, 12.93 N•m of yield strength and with angular deformation of 57.73° (SD 20.62°). There was no significant difference in these variables between the native and repaired DUTL. Tearing occurred at a mean of 10 mm (SD 2 mm) proximal from the triquetrum's insertion in a transverse midsubstance pattern. Conclusion:This study showed a reproducible pattern of injury to the DUTL in a cadaveric model. Additional work is needed to further characterize the pathoanatomy of "hockey wrist." Contexte : La douleur cubitale au poignet, au niveau du triquetrum proximal dorsal, surtout à la pronation, à la flexion et à la déviation radiale du poignet, est fréquente chez les athlètes, particulièrement chez les joueurs de hockey. Le but de cette étude était d'évaluer la position dans laquelle le ligament ulnotriquétral dorsal (LUTD) est soumis à la pression la plus grande, le couple de torsion menant à la défaillance et le mode de blessure. Selon notre hypothèse, le LUTD est soumis au maximum de pression lorsque le poignet est en flexion, pronation et déviation radiale, et au moment de la défaillance, le ligament ulnotriquétral se déchire.

show abstract

Section: Discussionmentioning

confidence: 99%

“Hockey wrist”: dorsal ulnotriquetral ligament injury

Sandman

Boily

Martineau

2018

cjs

View full text Add to dashboard Cite

show abstract

“…In some interventional studies, SUS was used to quantify the effects of different handle materials, shapes, dimensions, and orientations among sample population ranging from 10 to 18. 2,58,59 Therefore, we sought using SUS for quantifying the usability of the handle intervention in our study.…”

Section: Usability Scoresmentioning

confidence: 99%

Ergonomic evaluation of low-cost intervention for carpet trimming workers exposed to hand vibration and noise

Singh

Meena

Chaudhary

2019

Noise & Vibration Worldwide

View full text Add to dashboard Cite

The aim of the study was to investigate the occupational use of low-cost intervention for carpet trimming occupation. This study quantifies the effect of hand-arm vibration and noise exposure to loss in hearing threshold among trimming workers. Ten male participants (right handed) involved in carpet trimming volunteered to participate in this interventional experiment. The participants were queried about the usability of prototype handle based on their subjective perception evaluated through the use of scoresheet/ questionnaire. Results demonstrated that the handle intervention reduced the total value of root mean square frequency-weighted vibrations by more than 40% when compared with the conventional handle. The workers were exposed to noise levels ranging from 87.2 to 91.8 dB(A) (mean 89.55 dB(A)). They exhibit mild-to-moderate hearing impairment in the frequency range of 3000-6000 Hz. Based on this preliminary work, we have found that prototype handle was effective in curtailing hand-arm vibration. The prototype handle showed a positive effect on the usability ratings. More practical applications should be explored to prevail the combined effect of hand-arm vibration and noise.

show abstract

“…relationship between the body dimensions and those of the workstation) (Wang et al 1999;Das, Shikdar, and Winters 2007;Kushwaha and Kane 2016) and strength (e.g. the application and analysis of forces and torque in the operation of controls or in other physical tasks) (Eksioglu 2004;Dianat et al 2017), as well as the characterisation of the differences in anthropometric characteristics among different occupational and ethnic groups (Hu et al 2007; 1.1. Rationale…”

Section: Introductionmentioning

confidence: 99%

A review of the methodology and applications of anthropometry in ergonomics and product design

2018

Self Cite

View full text Add to dashboard Cite

Anthropometry is a key element of ergonomic studies for addressing the problem of fitting the tasks/products to user characteristics, but there is a gap between anthropometric data and their application for designing ergonomic products and environments. This research was conducted to review the literature on the methodology and applications of anthropometry for the ergonomic design of products and environments, and to identify where further research is needed to improve its application and evaluation protocols. One hundred and sixteen papers meeting the inclusion criteria were reviewed. Although a number of anthropometric investigations have been conducted to improve the design of products/environments for different users, further research seems to be necessary, particularly for special groups, such as children, the elderly and people with disabilities. Different anthropometric measurement methods/techniques and fitting criteria are discussed regarding their applicability for various design applications. This review also highlights methodological issues (sampling considerations and prototype evaluation and testing) that should be considered in future research to ensure a user-centred approach of the design process. Practitioner Summary: A literature review was conducted on the methodology and applications of anthropometry for the ergonomic design of products/environments. This review emphasises the need for anthropometric research to design for special groups, such as children, the elderly and people with disabilities, and methodological issues that should be considered in future research. Abbreviations: 1D: one-dimensional; 2D: two-dimensional; 3D: three-dimensional; HF/E: Human Factors/Ergonomics; PCA: Principal Components Analysis; CA: Cluster Analysis; DHM: Digital Human Modelling.

show abstract

Effects of tool handle dimension and workpiece orientation and size on wrist ulnar/radial torque strength, usability and discomfort in a wrench task

Cited by 24 publications

References 27 publications

“Hockey wrist”: dorsal ulnotriquetral ligament injury

“Hockey wrist”: dorsal ulnotriquetral ligament injury

Ergonomic evaluation of low-cost intervention for carpet trimming workers exposed to hand vibration and noise

A review of the methodology and applications of anthropometry in ergonomics and product design

Contact Info

Product

Resources

About