Devices measuring blood pressure oscillometrically at the wrist are becoming more and more popular. These devices are small, easy to handle and can measure blood pressure without the need to undress. However, few of the wrist devices have been validated properly, i.e. according to internationally accepted protocols. In this article current literature on wrist blood pressure measuring devices is...

BACKGROUND Wrist disorders are common in force demanding industrial repetitive work. Visual assessment of force demands have a low reliability, instead surface electromyography (EMG) may be used as part of a risk assessment for work-related wrist disorders. For normalization of EMG recordings, a power grip (hand grip) is often used as maximal voluntary contraction (MVC) of the forearm extensor ...

Conventional, straight keyboards remain the most popular design among keyboards sold and used with personal computers despite the biomechanical benefits offered by alternative keyboard designs. Some typists indicate that the daunting medical device-like appearance of these alternative 'ergonomic' keyboards is the reason for not purchasing an alternative keyboard design. The purpose of this rese...

Moment arm, muscle architecture, and tendon compliance in cadaveric human forearms were determined and used to model the wrist torque-joint angle relation (i.e. wrist torque profile). Instantaneous moment arms were calculated by differentiating tendon excursion with respect to joint rotation. Maximum isometric tension of each wrist muscle-tendon unit was predicted based on muscle physiological ...

The objective of this investigation was to determine the effect of wrist guard use on all upper-extremity injuries in snowboarders. This matched case-control study was conducted at 19 ski areas in Quebec, Canada. Cases were 1,066 injured snowboarders who reported upper-extremity injuries to the ski patrol during the 2001-2002 season. Controls were 970 snowboarders with non-upper-extremity injur...

[Purpose] The purpose of this study was to research the difference in wrist flexion of right-handed and left-handed persons during writing. [Subjects] This subjects were 25 persons (left handers 12/ right hander 13) and the study was conducted from 06/01/2011 to 10/31/2011. [Methods] A Motion analysis system (Zebris) was used to determine the degree of wrist flexion of right-handers and left-ha...

A few numbers of patients admitted to the emergency department due to the lunate dislocation can cause a direct injury to the wrist ligament, which mainly occurs after wrist trauma, and often diagnosis is far from the mind. A 32 years old man due to severe pain and tenderness of the wrist started the previous day during swimming, referred to Emergency Department of Imam Reza Hospital of Mashhad...

Rheumatoid arthritis is a polyarthropathy affecting approximately 1% of the population worldwide. Wrist involvement is observed around 75% of patients, resulting in substantial disability and morbidity. A multidisciplinary approach to management of such patients is undertaken to prevent disease progression, many go on to develop debilitating disease requiring surgical intervention. Total wrist ...

OBJECTIVE This research examines individual differences in the wrist postures adopted during the use of two pointing devices (mouse and trackball). DESIGN A multiple case study of twelve participants was employed. BACKGROUND The use of pointing devices may lead to musculoskeletal discomfort and injury as a consequence of prolonged exposure to postures involving wrist extension and ulnar dev...