The design of figure and bottoms are mainly referred to standard keyboard. The problem of Ergonomic of standard keyboard is discussed, and the solution is announced. The Ergonomic of hands is based on design rules of Braille display. The new style Braille display is helpful to decrease the angle of ulnar deviation and dorsiflexion, and abstain operators CTD.

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Stable position of posterior malleolar fracture when trimalleolar fractures are treated by external fixation is dorsiflexion-neutral position.

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To investigate the the body shape strength and kinematics thateffects sprint expert performance 17 healthy male sprinters weremeasured using SongxiaM9000 high speed vidicon in the field; body shape of sprint athlete were tested by steel rule; Meanwhile shoulder were tested at 60, 240and360 deg/sec velocities ; lower limb were tested at 60, 240 deg/sec velocitues using Biodex-II tesing and rehabilitation system in the laboratory This research provide theoretical basement to scientifically make reasonable exercise prescription and perfect sprint theoryThe result show that (1) The results of correlation indicate that 100M performance related to the shoulder fast flexion torque and hip flexion/extension torque^ ankle fast dorsiflexion torque ;(2) The upper arm relaxing enclose and lower limbs length effect 100Mperformance;(3) The biggest shoulder extension joint, swing rage of shoulder and the biggest elbow joint extension effect 100M performance.

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