Development of an Air Pneumatic Suspension System for Transtibial Prostheses
AbstractThe suspension system and socket fitting of artificial limbs have major roles and vital effects on the comfort, mobility, and satisfaction of amputees. This paper introduces a new pneumatic suspension system that overcomes the drawbacks of current suspension systems in donning and doffing, change in volume during daily activities, and pressure distribution in the socket-stump interface. An air pneumatic suspension system (APSS) for total-contact sockets was designed and developed. Pistoning and pressure distribution in the socket-stump interface were tested for the new APSS. More than 95% of the area between each prosthetic socket and liner was measured using a Tekscan F-Scan pressure measurement which has developed matrix-based pressure sensing systems. The variance in pressure around the stump was 8.76 kPa. APSS exhibits less pressure concentration around the stump, improved pressure distribution, easy donning and doffing, adjustability to remain fitted to the socket during daily activities, and more adaptability to the changes in stump volume. The volume changes were adjusted by utility of air pressure sensor. The vertical displacement point and reliability of suspension were assessed using a photographic method. The optimum pressure in every level of loading weight was 55 kPa, and the maximum displacement was 6 mm when 90 N of weight was loaded. View Full-Text
Share & Cite This Article
Pirouzi, G.; Abu Osman, N.A.; Oshkour, A.A.; Ali, S.; Gholizadeh, H.; Wan Abas, W.A.B. Development of an Air Pneumatic Suspension System for Transtibial Prostheses. Sensors 2014, 14, 16754-16765.
Pirouzi G, Abu Osman NA, Oshkour AA, Ali S, Gholizadeh H, Wan Abas WAB. Development of an Air Pneumatic Suspension System for Transtibial Prostheses. Sensors. 2014; 14(9):16754-16765.Chicago/Turabian Style
Pirouzi, Gholamhossein; Abu Osman, Noor Azuan; Oshkour, Azim A.; Ali, Sadeeq; Gholizadeh, Hossein; Wan Abas, Wan A.B. 2014. "Development of an Air Pneumatic Suspension System for Transtibial Prostheses." Sensors 14, no. 9: 16754-16765.