%0 Journal Article %A Francis P. Morgan %A Thomas King %T PRIMARY INSTABILITY OF LUMBAR VERTEBRAE AS A COMMON CAUSE OF LOW BACK PAIN %D 1957 %J The Journal of Bone & Joint Surgery British Volume %P 6-22 %V 39-B %N 1 %R 10.1302/0301-620X.39B1.6 %U https://doi.org/10.1302/0301-620X.39B1.6 %K