Clinical Trial: The Postural Control in Individuals With the Structural Leg-length Discrepancy

Study Status: Completed
Recruit Status: Completed
Study Type: Interventional

Official Title: Does the Structural Leg-length Discrepancy Affect the Postural Control? Preliminary Study

Brief Summary:

The structural leg-length inequality caused by the shortening of a segment of an extremity, results in an altered position of lower limb joints, the pelvis and the spine in static as well as dynamic conditions. That may induce a disturbance of the postural control.

The objective of this study is to investigate the effect of the structural LLD on the control of the posture.


Detailed Summary:

The measurement of the weight distribution and the static posturography is performed on the balance platform Good Balance by Metitur . The device is comprised of the triangular force platform (800 mm x 800 mm x 800 mm) with electronic system and computer software. The body weight distribution is evaluated in the upright standing with eyes open, feet placed 20 cm from each other or narrower in children, with upper extremities in relaxed position by sides. The individual stands motionlessly for 15 s, then the measurement is recorded. The results of each lower extremity loading and a difference in weight bearing between extremities are expressed in percentages (%) .

The static posturography examination is performed with 3 various positions of feet, both with eyes open (EO) and eyes closed (EC). (1) Position : normal standing - an upright standing with feet placed parallel 20 cm apart. (2) Position: tandem - a stance with one foot placed ahead of the other, medial edge of feet was put on the midline of the balance platform. In the experimental group 2 trials were recorded: (a) foot of the shorter leg in the front, (b) foot of the shorter leg in the rear. In the control group also 2 trials are performed: (c) foot of the right leg in the front, (d) foot of the left leg in the front. (3) Position: one leg standing: stance on the one leg, foot placed 10 cm from midline of the platform, the other - 90 degrees flexion of the knee and the hip, test performed only with EO. Every participant is supposed to stand motionlessly for 30 s in normal standing , or for 20 s in tandem .and one leg standing position. Conditions of the posturographic examination involved : quiet and normally lit room , standing barefoot , the eyesight directed at a point in the distance of 2 m , glasses or contact lenses are worn if they are normally needed, arms held in the front of the body with hands together
Sponsor: Poznan University of Medical Sciences

Current Primary Outcome: Evaluation of mean COP velocity in anteroposterior and mediolateral directions during stance in subjects [ Time Frame: 1.02.2017 ]

Mean COP velocity [mm/s] is recorded in anteroposterior (AP) and mediolateral (ML) directions within posturographic evaluation in examination of every participant.


Original Primary Outcome: Same as current

Current Secondary Outcome: Evaluation of weight distribution during stance in subjects [ Time Frame: 1.02.2017 ]

The weight loading of each limb is assessed in every participants. The result is expressed in kilograms [kg].


Original Secondary Outcome: Same as current

Information By: Poznan University of Medical Sciences

Dates:
Date Received: February 6, 2017
Date Started: January 18, 2017
Date Completion:
Last Updated: February 8, 2017
Last Verified: February 2017