ABSTRACT
Forty-eight cases of posterior vertebral arthrodesis for scoliosis, performed with or without instrumentation, were examined using computed tomography (CT) scanning to study the evolving fusion mass. The authors observed that the fusion mass area is more voluminous in the cases performed without instrumentation than in the ones performed with instrumentation, and that 2 years after fusion the bone mass shows already a considerable increase. For the cases operated with Harrington's technique, the increase of the fusion mass is very slow and becomes considerable 5 years after operation. In both series, the section of the fusion masses at the apex of the curve is asymmetric (with prevalence on the concave side), with an area of central resorption that shows the structure of a long bone (box section).
Subject(s)
Orthopedic Fixation Devices , Scoliosis/surgery , Spinal Fusion/instrumentation , Thoracic Vertebrae/diagnostic imaging , Tomography, X-Ray Computed , Adolescent , Biomechanical Phenomena , Bone Transplantation , Braces , Casts, Surgical , Female , Follow-Up Studies , Humans , Male , Postoperative Care , Scoliosis/diagnostic imagingABSTRACT
The authors describe a case of intraspinal extradural ganglionic cyst. This is a rare condition which has not previously been reported in the literature. The differential diagnosis is discussed.
Subject(s)
Cysts/diagnostic imaging , Ganglia, Spinal , Spinal Neoplasms/diagnostic imaging , Aged , Cysts/pathology , Cysts/surgery , Diagnosis, Differential , Female , Humans , Spinal Neoplasms/pathology , Spinal Neoplasms/surgery , Tomography, X-Ray ComputedABSTRACT
The writers present a case of spontaneous cure of spondylolytic spondylolisthesis in a child aged twelve, which resulted in an almost perfect result within three years. This is an extremely rare occurrence, only five cases having previously been reported.
