Ganguli S, Bose K, Datta S R
Acta Orthop Scand. 1975 Apr;46(1):123-34. doi: 10.3109/17453677508989200.
A below-knee amputee is generally known to achieve a close-to-normal performance level, with the patellar-tendon-bearing method of stump fitting. This was confirmed by an ergonomic investigation on ten below-knee amputees, fitted with PTB prostheses. The test group subjects were given two static tests, two dynamic tests and one exercise tolerance test, during which their oxygen consumptions, pulmonary ventilations, energy expenditures and peak heart rates were measured. The performance of the test subjects were compared with that of a control group consisting of sixteen normal, healthy, individuals. The percentage increases in the values of the biomechanical parameters of the test subjects, over those of the control group, were found to be justified and thus natural to the below-knee amputee-PTB prosthesis system. The ergonomic study has not yielded information regarding the biomechanical efficacy of the PTB prosthesis, but it has also shown that the amputees fitted with such prostheses can take up, without any undue extra effort and metabolic cost, industrial occupations of the moderately heavy kind.
一般认为，通过髌腱承重法进行残肢适配的膝下截肢者能够达到接近正常的功能水平。对十名装配了髌腱承重（PTB）假肢的膝下截肢者进行的人体工程学调查证实了这一点。对测试组受试者进行了两项静态测试、两项动态测试和一项运动耐力测试，在此期间测量了他们的耗氧量、肺通气量、能量消耗和心率峰值。将测试受试者的表现与由十六名正常、健康个体组成的对照组进行了比较。发现测试受试者生物力学参数值相对于对照组的百分比增加是合理的，因此对于膝下截肢者 - PTB 假肢系统来说是自然的。人体工程学研究尚未得出关于 PTB 假肢生物力学功效的信息，但它也表明，装配了这种假肢的截肢者能够在没有任何过度额外努力和代谢成本的情况下从事中等强度的工业职业。
