Grevsten S, Erikson U
Ups J Med Sci. 1975;80(1):49-57. doi: 10.3109/03009737509178991.
The PTB-suction prosthesis has been studied by a roentgenological technique. There is complete contact between the skin of the stump and the plastic inner surface of the socket. The movement of the stump in the socket is minimal. The displacement of the skeletal stump is reduced to half in the PTB-suction prosthesis, compared with the strap-suspended PTB prosthesis. As a result, the stability between stump and socket is increased, provided that the stump is sufficiently long. Skin sores are avoided. The prosthesis, when adequately fitted, guarantees a good circulation within the stump and a cosmetically favourable fit with a feeling of walking with "a normal leg".
已通过X射线技术对PTB抽吸式假肢进行了研究。残肢皮肤与接受腔的塑料内表面完全贴合。残肢在接受腔内的移动极小。与带悬吊式PTB假肢相比，PTB抽吸式假肢中骨骼残肢的位移减少了一半。因此，只要残肢足够长，残肢与接受腔之间的稳定性就会增加。可避免皮肤溃疡。如果安装得当，该假肢可保证残肢内良好的血液循环，外观上也能很好地适配，让人有“正常腿部”行走的感觉。
