A walking assist device includes a vertical support with a proximal end and a distal end, the proximal end coupled to a seat for supporting a user's hip with the user's thigh in a generally horizontal position and a seat attachment member to secure the user's thigh to the seat. The distal end of the vertical support comprises a foot for transferring weight from the user's hip to the ground with the user's thigh in a generally horizontal position. An optional horizontal support extends from the vertical support between the proximal end and the distal end of the vertical support and includes a calf support member.