Quantification of Intervertebral Disc Volume Properties Below Spine Fusion, Using Magnetic Resonance Imaging, in Adolescent Idiopathic Scoliosis Surgery
| Autor: | Erik Estivalèzes, Philippe Violas, Jérôme Briot, Pascal Swider, Jérôme Sales de Gauzy |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
Adult
Male medicine.medical_specialty Adolescent medicine.medical_treatment Radiography Arthrodesis Weight-Bearing Imaging Three-Dimensional Spine fusion Body Water Image Processing Computer-Assisted Humans Medicine Orthopedics and Sports Medicine Prospective Studies Child Intervertebral Disc Reduction (orthopedic surgery) Observer Variation medicine.diagnostic_test business.industry Age Factors Magnetic resonance imaging Intervertebral disc Recovery of Function Magnetic Resonance Imaging Spine Biomechanical Phenomena Orthopedic Fixation Devices Surgery Cartilage Spinal Fusion Treatment Outcome medicine.anatomical_structure Scoliosis Spinal fusion Female Neurology (clinical) business Volume (compression) |
| Zdroj: | Spine. 32:E405-E412 |
| ISSN: | 0362-2436 |
| DOI: | 10.1097/brs.0b013e318074d69f |
| Popis: | Study design Prospective clinical study. A quantification of volume and hydration variation of the intervertebral discs, using magnetic resonance imaging (MRI), in the lumbar spine before and after surgery performed in adolescent idiopathic scoliosis (AIS). Objectives To evaluate an objective quantification of volume and hydration of intervertebral discs below spine fusion in scoliosis surgery. Summary and background data Repercussion of long spine fusion on the free lower lumbar spine is one of the major concerns of scoliosis surgery. However, the evolution of lumbar intervertebral disc below thoracolumbar fusions remains unknown. Methods MRI performed in the clinical protocol, concerned 28 patients having an idiopathic scoliosis. They underwent posterior instrumentations. MRI was obtained before surgery, after surgery at 3 months and for 15 patients at 1 year. MRI data were posttreated using a custom-made image processing software to semiautomatically derive volume properties of disc, anulus fibrosus, and nucleus pulposus. The nucleus-disc volume ratio was also an indicator of the hydration level. Results The reliability of the three-dimensional reconstruction process was initially verified using an intraoperator reproducibility test. Original preoperative data on disc volume properties were then derived. Postoperative volume variations were quantified in discs below spine fusion taking into account the level of the arthrodesis and the disc location. It showed that the postoperative volume criteria increased significantly for nucleus, disc, and nucleus-disc volume ratio and some magnitude modulation could be conditioned by the location of surgical instrumentation. Some stabilization or reduction depending on disc level and arthrodesis size between 3 months and 1 year is observed in the follow-up. It tended to prove that the recovery of balance physiologic positioning and inherent biomechanical loads could induce a restored hydration of disc, which should favor the remodeling of free segments. Conclusions This work was the first report dealing with consequences of scoliosis surgery on subjacent disc in term of volume and hydration properties. |
| Databáze: | OpenAIRE |
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