Co-relation between characteristics of hand-held devices and disability of neck and upper extremity

There has been rampant rise in mobile usage in last 5-10 years with even higher penetration of internet usage among its users. Close to 90% of such internet usage is mainly for communication; e-mails & social networking besides web browsing and other applications. Mobile phone / Hand-held Devices (HHDs) require repetitive movement in static posture of neck and upper limb, which can cause Musculoskeletal Disorder (MSD) or Repetitive Stress Injuries (RSI). MSD are inflammatory condition (due to damage of underlying structures) of joint, muscle, ligaments, tendon, nerve causing pain and fatigue. Aim of this study was to see the co-relation between characteristics of HHDs (weight and screen size) along with disability of neck & upper extremity due to the posture and respective time duration

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