Air cushion action at the distal end of above-knee stump with a prosthetic socket

Ming Zhang, Arthur F T Mak, Johnnes Mak

Research output: Journal article publicationConference articleAcademic researchpeer-review

3 Citations (Scopus)


The air cushion action over the distal end of residual limb with a prosthetic socket was investigated by experimental measurements of the air pressure during standing and walking and by computational simulation based on finite element methods. The air pressure at the distal-end cavity during walking was found to be in the range of -20 kPa to 17 kPa. The statistical peak pressure was -16.9±2.2 kPa during swing phase and 14.3±2.5 kPa during stance phase. Finite element models have been established to investigate the load transfer between an above-knee stump and the prosthetic socket. An air cavity was assumed to be sealed between the distal end of the stump and the socket. Hydrostatic fluid elements were used to simulate this air cavity. The air pressure predicted for standing is 9 kPa and supports about 12 percent of the total vertical load.
Original languageEnglish
Pages (from-to)2754-2756
Number of pages3
JournalAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
Publication statusPublished - 1 Dec 1998
EventProceedings of the 1998 20th Annual International Conference of the IEEE Engineering in Medicine and Biology Society. Part 4 (of 6) - Hong Kong, Hong Kong
Duration: 29 Oct 19981 Nov 1998

ASJC Scopus subject areas

  • Bioengineering

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