الفهرس 
Shimaa Taha abu El Kasem
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Abstract
Background: The lumbosacral region is the most important region in the vertebral column in terms of mobility and weight bearing. Changes in lumbar lordosis can result in compensatory adjustments in the cervical spine. Objectives: to investigate the effect of lumbar hyperlordosis correction on craniovertebral angle, low back pain level and lumbar range of motion in chronic low back pain patients. Subjects: 30 patients of both genders diagnosed as chronic low back pain with lumbar hyperlordosis (cobb anlge > 40 degrees) assigned randomly into 2 groups. (Experimental group A): 15 patients received muscle energy technique. Their mean age and BMI were 21.8 ± 2 years, and 24.01 kg/m² respectively. (Control group B): 15 patients received William program. Their mean age and BMI were 22.2 ± 1.85 years, and 23.57 ± 3.12 kg/m² respectively. Treatment was given 3sessions/week for 4 weeks. Methods: Lumbar lordosis angle was measured by plain X ray imaging, craniovertebral angle by photographic method, pain intensity by numerical rating scale, lumbar range of motion by tape. Results: There was a significant increase in craniovertebral angle, increase in lumbar range of motion and decrease of pain on numerical rating scale post treatment in group A and B (p > 0.001). Conclusion: lumbar hyperlrdosis correction had a positive effect on back pain intensity, lumbar range of motion and craniovertebral angle