Marfan syndrome is a hereditary disorder of the connective tissue that, in
its most classic form, includes cardiovascular, ocular, and skeletal featur
es. The neurological problems associated with the disease are mainly caused
by intracranial vascular abnormalities and spinal meningeal defects, but O
ther neurological manifestations are rarely present. Scoliosis: a skeletal
manifestation of the syndrome, occurs frequently, but its onset, natural hi
story, and radiological characteristics differ from those of the idiopathic
form. Scoliosis in a patient with Marfan syndrome seldom accompanies other
spinal deformities. In this article the authors describe the case of a pat
ient with Marfan syndrome and scoliosis in whom lumbar subluxation occurred
. This rare deformity. diagnosed on three-dimensional computerized, tomogra
phy scanning, has not been reported previously in association with Marfan s
yndrome. its development can be explained in terms of the theory of progres
sive rotatory dislocation. The morphological characteristics, clinical feat
ures, and surgical treatment of the deformity are presented.