Biomechanics may be defined as the application of the discipline of mechanics to biologic systems. Rehabilitation is a practice dedicated to the restoration of function to a body impaired by injury or disease. Because rehabilitation is focused on the form and motion of a system of interrelated parts, an appreciation for biomechanical theory and application is appropriate. This application provides a basis for understanding diagnostic and evaluation methods, treatment modalities, and pathologic effects of the affected musculoskeletal system. This article presents applicable mechanical theory, including the concepts of moment and lever systems; linear kinetics of ground reaction forces (GRFs), linear momentum and impulse determination; and angular kinematics of displacement, velocity, acceleration, momentum and impulse, work, energy, and power (Box 1). A description of muscle biomechanics, gait and motion analysis, and the mechanics of various therapeutic exercises is also presented.
- linear kinetics,
- joint motion,
- skeletal muscle,
- therapeutic exercise
Available at: http://works.bepress.com/joseph_weigel/2/