２３２名微机操作人员的慢性肌肉骨骼损伤表现为肩、颈、下背的酸痛和肩疲劳，与对照组比差异显著。手、腕及上肢的慢性损伤虽较对照组高，但无统计学意义。这与他们的击键次数相对较少（每日１００００次左右），但需长期间保持低头及向前弯腰的坐位姿势及工作台面太高等因素有关 Chronic musculoskeletal injuries of 232 computer operators showed pain and shoulder fatigue on the shoulders, neck and lower back, which were significantly different from the control group. Chronic injury of hands, wrists and upper limbs was higher than the control group, but not statistically significant. This is related to the relatively small number of keystrokes (10,000 times a day), but it needs to be kept for a long period of time with bow-down posture and work bench height being too high