起立の安定域の検討　Ｉ　　脳性麻ひにおけるＣｒｏｓｓ　Ｔｅｓｔ

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  • CLINICAL STUDY ON SAFETY AREA OF STANDING THE CROSS TEST FOR CEREBRAL PALSY
  • 脳性麻痺におけるCross Test

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Cerebral palsy (CP) exhibits standing instability to the degree according to motor disfunction.<br>In clinical study, we usually evaluate motor function of CP quantitatively with a gravitiography.<br>Thus we measure the area covered by the movement of each individual's gravity, while he inclines his body as far as possible in all direction without falling. This we call the safety area of standing, which varies depending on the degree of standing stability and is large in normal subjects.<br>In this paper we investigate the safety area of standing of CP, and whether or not it might be improved by rehabilitation.<br>For this purpose we employed the “cross test”. In this test subjects are required to stand on the platform of a gravicorder and keep the position for 10 sec. Then they are required to incline their bodies forward and backward, and to right and to left without bending their trunk.<br>In normal subjects, the electrogravitiogram (EGG) shows a well formed cross pattern, and their shifting range covers approximately 60% of their feet length and feet width.<br>In mild spastic CP, EGG shows a smaller cross which is 70-80% of that of the normals in length and width.<br>In moderate spastic CP, EGG hardly forms a cross, because they often fail to incline their body in required direction.<br>In tension athetosis, EGG shows a rotatory pattern rather than a cross at the cross test. Because they cannot keep the standing posture without swaying their bodies, EGG of standing still shows similar pattern to that of the cross test.

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