Trans-femoral or above-knee (a/k) amputation, which occurs through the thigh, is one of the most common types of amputation in the world. a person who undergoes an a/k amputation requires an artificial limb/ prosthesis to stand and walk. existing indigenous prosthetic knees use a simple hinge joint which typically stays locked during walking to provide stability on the uneven surfaces. however, this requires users to expend greater effort while walking since the complete leg has to be swung forward from the hip. a polycentric knee has many advantages over a hinge joint knee because of multiple axes of rotation can allow the user to control the knee better with their remaining musculature and provide more toe clearance than a single-axis knee. in the present work, a completely indigenous polycentric knee has been developed that takes into account the dual needs of stability and greater floor clearance to prevent stumbling on uneven surfaces. the design also incorporates a simple frictional swing control to provide a smooth swing and adjustability for various walking speeds. built using high strength aluminium and stainless steel, the knee is designed to meet the stringent norms of iso10328, which is the standard for prosthetic knees the world over.