The embodiments of the present invention provide a lightweight and cost-effective prosthetic leg structure using a cane assembly at distal end, which facilitates faster walking and decreased energy expenditure at similar speeds compared to a conventional foot. The prosthetic leg comprises a cane assembly of load bearing structures from the end of toes till the knee. The cane assembly comprises multiple primary load bearing structures that originate from forefoot and extend till knee. The stiffness of the cane structures are tuned such that the lateral structures have a higher stiffness and strength than the medial structures. A central heel unit is connected to the lower end and a foldable shape adapter is connected to the top end, which acts as the connecting mechanism of the prosthetic leg to the human body. The prosthetic leg?s outer covering is a multi-part cosmetic shell customized as per a user?s requirements. FIG.1
