The rising cost of medical treatment and the rapidly aging world population has necessitated the advent of cheaper alternative methods for rehabilitation therapy and assistive technology. The advancement of robotic technology has brought about the possibility of robotic alternative to the above mentioned concerns. These alternative robotic orthotic and assistive devices could bridge the current treatment gap and provide better assistive orthosis. The project aims to design and develop an intelligent assistive and rehabilitative knee orthotic device that is actuated by means of Pneumatic Artificial Muscles (PAM). The orthosis will provide assist as needed support for both assistance and rehabilitation. Adaptive resistance will further assist the rehabilitation therapy.