اشترك بالحزمة الذهبية واحصل على وصول غير محدود شمرا أكاديميا
تسجيل مستخدم جديدComparative study of Sagittal lumber - pelvic alignment parameters end Hamstring muscle length between patients with lumbar disc herniation and normal subjects
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The pelvis anatomy and position, interact with the lumbar spinal organization in shape and position to regulate the sagittal balance between both the lumbar spine and pelvis. Sagittal lumbar-pelvic balance of the human body may be analyze by a pelvic parameters ( pelvic incidence (PI), and sacral slope (SS)) and shape of the spine (lumbar lordosis (LL) and spinal morphologic type). Hamstring muscle tightness (HMT) causes rotating backward the pelvis (retroversion) which decrease lumbar lordosis. We measure PI, SS, lumbar lordosis and spine type on lateral radiographs of 21 patients with lumbar disc herniation (LDH) and 50 spinal healthy subjects and evaluate HMT by straight-leg-raising test (SLR-test). The lumbar-pelvis parameters for patients with DH demonstrated to have a mean PI, SS and LL equal to 48.85°, 37.9°and 47.28°, respectively, versus 52.24°, 42.88° and 59.24°, respectively, for the control group. Patients with a LDH were characterized to have PI, SS and LL significantly lower than the control group. Also DH group has a mean SLR-test equal to 74.85°, significantly lower than control group (82.24°). We notice also that spine type I and type II are more frequently in DH group. All results give that DH group has vertical spine more than control one, which mean that the DH patients have vertical pressure on lumbar discs more than normal subjects.
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