Gait Cycle: Understand The Biomechanics Of Walking & Running

Explore the biomechanics of key lower extremity joints for the gait cycle, including sacrum–pelvis biomechanics, and examine diarthrosis and synarthrosis types, the joint capsule, ligaments, articular cartilage, and synovial fluid.

Explore the three joint types—uniaxial, biaxial, and tri axial—and learn how hinge, pivot, saddle, plane, condyloid, and ball-and-socket joints shape movement.

Explore how nutation and counter nutation of the pelvis influence tibia and femur rotation and force absorption during walking and running, plus anterior and posterior pelvic tilt effects.

Explore the hip joint, a ball-and-socket with the femur head in the acetabulum, covered by articular cartilage, enabling flexion, extension, abduction, adduction, and internal and external rotation during gait cycle.

Explore the knee joint's anatomy as a biaxial, modified hinge that links the femur, tibia, and patella, enabling flexion, extension, and slight internal/external rotation, including the screw home mechanism.

Explore how the ankle's three joints—tibiotalar, subtalar, and transverse tarsal—support gait by distributing forces and enabling dorsiflexion, plantarflexion, eversion/inversion, and movement across the foot.

Define the walking gait cycle and its key parameters, detailing the stance (60%) and swing (40%) phases, single and double support, and how speed relates to stride length and frequency.

Explore stance phase from heel strike to toe off, including loading response and mid stance, and how sacrum, pelvis, tibia rotations, foot arch energy, pronation, and supination drive the swing.

Explore the swing phase of the gait cycle from toe-off to heel strike, and its subphases: early swing, mid-swing, and terminal swing, driven by momentum with minimal muscular effort.

Walking relies on forward kinetic energy and gravitational potential energy to propel motion, with minimal muscle activity and the swing leg as a pendulum.

Explore how arm swing counters longitudinal angular momentum during walking, improving efficiency and reducing energy expenditure, and contrast normal versus anti normal arm movements.

Define the running gait cycle and its key parameters: stance 35%, swing 65%, and flight 30%, with higher speeds increasing flight and reducing ground-contact time.

Explore how the running kinematics involve storing and releasing elastic energy for a spring-like, efficient stride. Compare rare and forefoot strikes, noting loading and injury risk.

Use elastic mechanisms to boost running efficiency by storing energy on a compliant surface and in resilient shoes, increasing stride length and lowering ground contact time and injury risk.

Learn to analyze your gait at home with a phone, filming from three angles to assess cadence, strike pattern, knee and hip mechanics, and stance-swing phases for running optimization.

Explore atypical gait patterns such as stiff knee, drop foot, and equinus gait, and analyze how high heels, incline walking, and backpack load alter joint angles, loading, and muscle demand.

Explore how walking uses forward momentum and kinetic energy to move with minimal muscle activity, and how running relies on energy storage in tendons and sacral biomechanics to absorb forces.