Thesis (M.Sc.) - Cairo University - Faculty of Physical Therapy - Department of Musculoskeletal Disorders

Background: Chronic low back pain could cause pelvic torsion and lumbar lordosis, which led to postural problems. Postural abnormalities caused repeated attacks of low back pain. Anterior pelvic tilt, Genu recurvatum and navicular drop were important for lower extremity alignment screening and were associated with acute and chronic lower extremity injuries. Altered foot position would affect the pelvic position and might be the cause of low back pain. Objectives: The purpose of this study was to determine the relation between pelvic inclination angle and navicular drop in CLBP patients. Materials and Methods: Seventy-Five patients with CLBP (more than 3 months). Their mean age, weight, height and BMI were 36.32 ± 10.61 years, 76.4 ± 14.63 kg, 164.94 ± 8.92 cm and 28.11 ± 5.23 kg/m². Pelvic inclination angle was measured bilaterally using digital pelvic inclinometer while the patient standing erect bare feet. The navicular drop difference was measured while the patient was sitting and standing. The navicular tuberosity was marked and the distance from it to the floor was measured using a ruler. The difference between the two positions was measured to determine the navicular drop. Results: The relation between right pelvic inclination and right navicular drop was weak positive non-significant (r = 0.14, p = 0.2). The relation between left pelvic inclination and left navicular drop was very weak positive non-significant (r = 0.03, p = 0.76). Conclusion: There was no relation between pelvic inclination angle and navicular drop in CLBP patients

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