From the research laboratories of MIT, a powered prosthesis has been progressively evolved. These endeavors have led to the commercialized BiOM powered prosthesis, which constitutes a paradigm shift in available powered prostheses. The powered prosthesis satisfies a multitude of design objectives for providing a considerably biomimetic device that emulates the features of the ankle–foot complex. The key aspect of the powered prosthesis from a mechanical perspective is the series elastic actuator. The series elastic actuator regulates prosthetic ankle stiffness during preliminary stance and generates powered plantar flexion at the terminal aspect of stance. A unidirectional parallel spring facilitates actuator properties. The elastic features of the prosthetic foot aspect augment energy storage and return characteristics. A control architecture represented by a finite state controller regulates the status of the powered prosthesis. The architecture is comprised of stance and swing phase, which are further subdivided into respective subphases. A considerable amount of testing and evaluation has been applied to this format of powered prosthesis. Gait analysis experimentation contrasted to conventional passive prostheses reveals improvements in metabolic economy, increased preferred walking velocity, gait biomechanics, and adaptive capability for real-life terrain scenarios. The MIT inspired powered prosthesis leading to the BiOM powered prosthesis is envisioned to provide considerable advancement regarding quality of life opportunities for people with transtibial amputation.