Changes of pelvic symmetry are caused by inborn or acquired factors. One of the acquired reasons for pelvic asymmetry may be clinical symptoms associated with lumbar spine hernial discopathy. The available literature does not sufficiently explain relationships presented in the study. The study included 44 patients. The reason for hospitalisation was sciatic neuralgia in the course of L4-L5 and/or L5-S1 hernial discopathy. Physical examination involved neurological assessment and sectional orthopaedic examination. Measurements of pelvis and L-S spine section were taken from the x-ray photographs. Distances between top edges of femoral heads and top of iliac wings (distance A) at the left and right side were measured. The condition of sacroiliac joints was assessed. Asymmetry of distance A at the left and right side was found among 33 patients. A relationship connecting the side of radicular syndrome with higher value of distance A on this side was found. The examined patients were also assessed for degenerative changes of sacroiliac joints, which were more intense among people with different distance A on the left and right sides. The examination results show that asymmetric arrangement of the pelvis is connected with lumbar spine hernial discopathy. A change of pelvis arrangement involves a change of body weight load on the hip and sacroiliac joints.