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Pressure casting technique for transtibial prosthetic socket fit in developing countries

This study investigates the use of a low-cost and low-skill pressure casting technique (PCAST) to fabricate and fit transtibial (TT) prosthetic sockets in developing countries. The aim is to address the challenges faced by people with lower-limb amputation in accessing affordable and skilled prosthetic services.

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Pressure casting technique for transtibial prosthetic socket fit in developing countries

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  1. Pressure casting technique for transtibial prosthetic socket fit indeveloping countries Peter Vee Sin Lee, PhD; Noel Lythgo, PhD; Sheridan Laing, BEng; Jimmy Lavranos, BSc; Nguyen Hai Thanh, BSc

  2. Aim • Investigate low-cost and low-skill pressure casting technique (PCAST) to fabricate and fit transtibial (TT) prosthetic sockets in a developing country. • Relevance • Many challenges are faced by people with lower-limb amputation in developing countries such as Vietnam. • Foremost are cost and access to skilled prosthetic services.

  3. Method • Subjects: • 13 active prosthesis users with unilateral TT amputation were recruited from Vietnamese Training Centre for Orthopedic Technologies (VIETCOT) in Hanoi, Vietnam. • Prosthetists: • VIETCOT staff with International Society for Prosthetics and Orthotics category II qualifications fabricated and fitted prostheses using PCAST technique. • Measures: • Satisfaction with prosthesis, physical function, and gait after fitting and following 167 days of use.

  4. Results • Satisfaction: • High scores after initial fit and extended usage period. • Physical Function: • 6 meter walk test significantly improved. • Gait: • Spatial and normalized temporal gait unchanged after usage period.

  5. Conclusion • Study shows that PCAST technique can be used to fabricate and successfully fit TT prosthetic sockets in conjunction with low-cost prosthetic components in a developing country.

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