Magdalena Goliwąs, Ewa Kamińska, Marta Flis-Masłowska,
Marzena Wiernicka, Jacek Lewandowski

M. Goliwąs, E. Kamińska, M. Flis-Masłowska, M. Wiernicka, J. Lewandowski – Balance Versus Postural Stability and Its Disorders in Patients after Ischemic Stroke – Theoretical Study. FP 2017; 17(1); 38-44

Abstract
The aim of this study is to explain the differences between balance and postural stability, and the changes which occur in these traits in patients after stroke.
Human being has the natural ability to stand on two feet and to move on the two feet across an unfamiliar terrain. However these abilities do constitute a big challenge for the balance control system, which is being controlled through the three separate systems, two of which are sight, responsible for planning of the locomotion activity, vestibular system, responsible for spatial orientation of the human body. The third, and the most complex is the sensory system (composed of proprioceptors and mechanoreceptors). In terms of biomechanics the balance is defined as the ability to maintain the center of gravity of the human body above the supporting plane.
One of the most important determinants of the correct body posture is the postural stability, which wider concept and denotes the ability to recover the balance. This is possible thanks to three strategies. Patients after a stroke have a problem with the ability of spontaneous kinesthetic response. The distribution of pressure forces of the plantar side of a foot on the ground changes, it becomes difficult to maintain balance, and the consequences are frequent falls, femur fractures and problems with the basic activities of daily living.

Key words:
Postural stability, balance, stroke

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