引言因先天残缺或截肢而失去肢体的人,显然他不仅失去机械操作力,而且也失去非常有用的感觉力。据记载在替代失去的机械功能方面,人们已作了大量的工作,尽管在更换肢体上作了长期的努力,然而人们却很少注意感觉功能的恢复。在下肢更换情况下,可以认为残肢上的反应力能满意地替代正常的感觉机制。但是上肢的情况不同。许多国家已采用安装分叉爪(Splithooks)的方法,分叉爪通过Bowden电缆以肩耸动来操作的。耸肩“感觉”爪张开的程度和在能自行张开爪的情况下,耸肩的“感觉”就是夹力的一种测量<耸肩强代表夹力小,但随张开的幅度而变化)。这种爪是具有功能的,然而外观欠美。对大多数截肢者来说,更希望的是具有功能的假手。 INTRODUCTION He who has lost his limbs due to an inborn disability or amputation apparently lost not only mechanical operating power but also very useful sensations. It has been documented that a great deal of work has been done to replace the lost mechanical function, and despite the long-term efforts to change limbs, little attention has been paid to the restoration of sensory function. In the case of lower extremity replacement, it can be assumed that the reaction force on the stump can satisfactorily replace the normal sensory mechanism. But the situation of upper limbs is different. Many countries have adopted the method of installing Splithooks, which are operated shoulder-to-shoulder through the Bowden cable. Shrugs “feel” the extent to which the jaws are open and the “feel” of the shrug is a measure of the grip force when the jaws are able to open their own jaws. This paw is functional, yet less attractive. More desirable for most amputees is a functional, artificial hand.