[영문]Low Backache is probably as old as man himself but it is definitely related in its frequancy and severity to his civilization.
The causes of Low Backache has been considered in numerous reports and remains controversial in the field of Orthopedic Surgery.
Low Backache was long called lumbago, a vague term meaning pain in the back and including a variety of conditions. The sacroiliac joint next became popular as the source of low backahe on the mistaken theory that the sacroiliac slipped and caused pressure upon the sciatic nerve.
Low Backache usually is due primarily to a mechanical weakness of the lumbosacral joint of congenital origin, but may be aggravated by other contributing factors. There are several types of mechanical abnormality of the lumbosacral joint which cause weakness in this region. Low backache due to mechanical weakness is associated with local physical signs and roentgenographic evidence of the abnormality whereas low backache due to other causes is devoid of low back signs, and there are evidences of disease elsewhere.
The author studied Low Backache is etiology, sex incidence, age incidence, durations, clinical symptoms and signs, Ferguson angle, findings of the disc spaces, and relation between the congenital anomalies. The experience with 426 cases of Low Backache which were treated at Severance Hospital Orthopedic Surgery from September, 1996 to August, 1969.
The results of the study are as follows:
1. The most common cause was herniated lumbar disc 32.4%, while the remaining cases included 17.6% of traumatic causes (strain, sprain, etc.) and others 12.7%.
2. In this series, herniated lumbar disc in females outnumbered males in ratio of 5:4.
3. The age group that revealed the highest incidence was between 21 and 30 years of age in 36.2%.
4. The duration of illness was within 6 months in 46.9%.
5. Average Ferguson Angle was 34.3 degrees.
6. The most common type of congenital anomaly was spina bifida (Occulta) 22.5%.
7. At the L4-5, increased the disc space in anterior and posterior side, but in L-S disc space decreased in posterior side.