Orthoses is an outer external tool or device which used to assist or restrict body parts movement by aligning, protecting and support. Ankle foot orthosis (AFO) is one of the widely utilized oethosis for patient has foot drop, or other problems in foot and ankle. There are many types of AFO according to the materials that form it including metal, plastic and carbon AFO. The plastic AFO is the most prevailing AFO style, including a small calf exterior and a narrow ankle trim line behind the malleoli. While carbon type have become more popular type in the previous decade. It is an incredibly light in weight and strong material. In addition, there are many recent trends in AFO. First, The AF Servo's back is constructed of plastic, while the front is constructed of fabric, with the trimline extending beyond the lateral malleolus and it is pre-assembled in a range of sizes and can be worn instantly by twisting the dial to speed the manufacturing process. Second, TurboMed is a dynamic AFO that can be worn on the outside of a variety of different types of shoes, including sneakers, shoes, and sandals. The 3D printed AFO is a one-of-a-kind orthosis created by additive manufacturing, a process that layers materials to create a solid shape which is manufactured using 3D printers. Finally, Kenaf composites are made of natural fibers and meet the minimum mechanical property standards for AFOs.

Orthosis and ankle foot orthosis