Sirindhorn School of Prosthetics and Orthotics, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok 10700, Thailand.
Department of Exercise and Sport Science, St. Mary's University, One Camino Santa Maria, San Antonio, TX 78228, USA.
Sensors (Basel). 2022 Jul 13;22(14):5224. doi: 10.3390/s22145224.
(1) Background: A sustainable casting system that combines the use of a polystyrene bag, a prosthetic liner and a vacuum system was developed to reduce fabrication time while maintaining comfort for the trans-tibial prosthesis user. (2) Methods: Eight prosthetists (28.7 ± 8.25 years old) fit ten trans-tibial prosthesis wearers (46 ± 12.4 years old) with two types of total surface bearing (TSB) prostheses; a polystyrene bead (PS) prosthesis and a plaster of paris (POP) prosthesis. Duration of casting and combined mean peak pressure was measured at six locations on the residual limb using Force Sensing Resistors (FSR). A pressure uniformity score (%) was determined. Socket Comfort Scale (SCS) was also measured. (3) Results: Duration of casting for the POP method was 64.8 ± 9.53 min and 7.8 ± 2 min for the PS method, ( = 0.006). Pressure uniformity in the POP prosthesis was 79.3 ± 6.54 and 81.7 ± 5.83 in the PS prosthesis ( = 0.027). SCS in both prosthesis types were equivalent. (4) Conclusion: A rapid fit PS prosthesis was developed, with significantly shorter duration than the traditional POP method. Socket pressure uniformity was confirmed and improved in the PS method. Socket comfort was equal between the two prothesis types.
(1) 背景：为了减少制作时间，同时保持小腿假肢使用者的舒适度，开发了一种将聚苯乙烯袋、假肢衬里和真空系统结合使用的可持续铸造系统。
(2) 方法：8 位假肢技师（28.7±8.25 岁）为 10 名小腿截肢者（46±12.4 岁）装配了两种全面接触式假肢；聚苯乙烯珠（PS）假肢和石膏（POP）假肢。使用力感应电阻器（FSR）在残肢的六个部位测量铸造时间和组合平均峰值压力。还测定了套舒适评分（SCS）。
(3) 结果：POP 法的铸造时间为 64.8±9.53 分钟，PS 法为 7.8±2 分钟，差异有统计学意义（ = 0.006）。POP 假体的压力均匀性为 79.3±6.54，PS 假体为 81.7±5.83，差异有统计学意义（ = 0.027）。两种假体类型的 SCS 均相当。
(4) 结论：快速适配 PS 假肢已被开发，与传统的 POP 方法相比，其制作时间显著缩短。PS 方法确认并改善了套的压力均匀性。两种假体类型的套舒适度相当。
