About 16% of the world's population suffers from physical disabilities, of which about 65% of the population experience lower limb amputations, and in lower limb about 50% face transtibial amputation and use transtibial prosthesis. The transtibial prosthetic users face many stump-related problems.

As a physical interface, a prosthetic liner is commonly used as a transition material between residual limb and stiff socket to provide optimal comfort, fit, and functionality. By using a prosthetic liner, stump-related issues can be relieved, and long-term use of prosthetic devices achieved by an amputee. Prosthetic liners are so expensive due to being imported that patients can't afford them. My study aims to develop a low-cost prosthetic liner for transtibial amputees to ensure its availability and affordability for patients who need a prosthetic liner, by using material available at a local level like silicon to improve their ability to cushion and protect the residual limb from injuries induced by load-bearing normal and shear stresses. The study includes 1 sample size of 40 years of age males, Participents develop a prosthetic liner and then use it on these samples to determine liner durability and hope the results are in favor.

Inclusion Criteria:

• Transtibial amputee with medium stump.
• Amputee which has been using the prosthetic leg for 3 years without prosthetic liners.
• Amputee with 40 years of age.

Exclusion Criteria:

• Any other amputees except transtibial.
• Amputees without using prosthetic devices.
• Amputees above 40 years of age.

Transtibial amputee with medium stump, using the prosthetic leg for 3 years without prosthetic liners. age should be 40 years