In sports, the Paralympic Games is the main form of inclusion of athletes with physical, visual, and mental disabilities. Regarding paralympic rowing, the sport enables rowers with an amputation to compete in an equal environment. Nevertheless, components responsible for mechanical energy storage, such as springs, are restricted during the competition, thus making more challenging the replication of the rowing movement by the lower limb. This work approaches a study and an optimization of the sculling of a paralympic rower with transtibial amputation using a passive prosthesis. Analytic models describing the system were developed and validated through SolidWorks Motion Analysis simulations. In addition, an optimization methodology for the system was developed, a design project of a prosthetic leg and foot for paralympic rowers was conducted, and an experimental setup was suggested. The component responsible for a kinematics restriction to the system presented satisfactory results to reduce the efforts made by the hip joint during rowing. The results related to the simulations through SolidWorks Motion Analysis indicated the validation of the models, pointing out the role of a restriction mechanism acting on the prosthetic leg as a tool responsible for the optimization of rowing efficiency for the paralympic athlete.