Cercueil J P, Lemaire J P, Grammont P, Mabille J P
J Radiol. 1982 Feb;63(2):107-13.
Radiographs of the lumbar spine frequently demonstrate asymmetry of posterior articular facets, but this is asymptomatic in patients with good abdominal and lumbar muscles when the anomaly is only of a moderate degree. It can, however, cause rotatory instability of the subjacent vertebra leading to lumbago. It is then frequently associated with osteo-articular complications affecting the posterior arch, this being a logical consequence of a sequence of changes which can be explained by simple mechanical factors.
