What becomes flat. The bodyweight keeps being

What is gait cycle exactly? A gait cycle is a series of events in walking or running, beginning when one foot contacts the ground and ending when the same foot contacts the ground again.Gait cycle has two phases: the weight bearing or stance phase and the non-weight bearing or swing phase. Each gait cycle begins with an initial contact – or heel-strike – of the leading leg in the stance phase first touches the ground, goes through a swing phase then ends with the next contact of the ground with the same leg. Stance phase:  stance phase takes up about 60% of the gait cycle.

It can be subdivided into initial contact (or heel-strike), loading response, mid-stance, terminal stance and pre-swing.- initial contact – or heel strike – starts when the heel of the leading leg touches the ground. It absorbs shock and stabilises the new position.

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After heel strike the body weight is being transferred to the leading limb.- loading response phase occur when the foot moves from the heel to the toe making the entire foot in full contact with the ground – the foot becomes flat. The bodyweight keeps being transferred onto the stance limb. – in mid-stance the limb is fixed and weight is shifted onto this limb – called single legged stance – and the foot turns into stability mode supporting the contralateral foot freely swinging forward.- in terminal stance begins when the heel raise off the ground. Weight moves ahead of the forefoot, the ankle is starting to flex downward and the knee extending to propel the body forwards.

Swing phase: takes up about 40% of the gait cycle. It can be subdivided into Initial swing, Mid-swing and Terminal swing. Pre-swing: is the terminal double-limb period.

It begins when the contralateral foot contacts the ground and ends with the ipsilateral toe off.Initial swing: it begins when the foot leaves the ground till full knee flexion occurs, the swinging limb is positioned directly under the body and directly opposite the stance limb. mid-swing:it begins right after knee flexion and ends when the tibia is in a vertical position.

Terminal (late) swing: it begins when the tibia passes beyond plumb, the hip flexes (about 30 degrees), the knee fully extends and the ankle is neutral – all preparing the heel to contact the ground. 

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