摘要
Case History Name: Wang; Sex: male; Age: 42; Occupation: office worker; Date of first visit: Apr. 10, 1996. Chief complaint: Lumbago and scelalgia on the left side for over one year. The patient stated that he got lumbar sprain one year before, which was diagnosed as mild prolapse of the intervertebral disc between the 4th and 5th lumbar vertebrae. Af-
