| Abstract: | Sacroiliac joint malposition is one of the main causes evoking lumbocrural pain. Because its clinical symptoms are similar to those induced either by lumbar intervertebral disc protrusion or by ankylosing spondylitis (AS) at the early stage, and because X-ray results taken at its early stage were not evident for differentiating the diseases, misdiagnosis may occur in some doctors due to lack of experience. The authors treated several cases of pain in hip joint, which had been diagnosed as ankylosing spondylitis. |
