Vertebral Coplanar Alignment
| Autor: | Javier Vicente Thomas, Gabriel Piza Vallespir, Juan Carlos Rodríguez Olaverri, Rafael Ramos Galea, Carlos Barrios Pitarque, Ignacio Sanpera Trigueros, Oscar Riquelme García, Jesús Burgos Flores, Manuel Francisco García Alonso, Pedro Doménech Fernández, José Ignacio Maruenda Paulino, Beatriz Rodríguez de Paz, Eduardo Hevia Sierra, Antonio Pérez Francisco, José Luis López, Pedro Gutiérrez Carbonell |
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| Rok vydání: | 2008 |
| Předmět: |
Adult
Male Adolescent Radiography Bone Screws Kyphosis Scoliosis Thoracic Vertebrae medicine Humans Orthopedic Procedures Orthopedics and Sports Medicine Prospective Studies Child Rachis Fixation (histology) business.industry Anatomy medicine.disease Magnetic Resonance Imaging Internal Fixators Sagittal plane Transverse plane Treatment Outcome medicine.anatomical_structure Coronal plane Female Neurology (clinical) Tomography X-Ray Computed business Nuclear medicine |
| Zdroj: | Spine. 33:1588-1597 |
| ISSN: | 0362-2436 |
| Popis: | STUDY DESIGN Prospective multicentric study. OBJECTIVE To present the preliminary results of an innovative method for standardized correction of scoliosis, vertebral coplanar alignment (VCA), based on a novel concept: the relocation of vertebral axis in a single plane. SUMMARY OF BACKGROUND DATA Normal standing spine has no rotation in coronal or transverse planes, therefore X and Z axis of vertebrae are in the same plane: they are coplanar. VCA intends to relocate these axis in one plane, correcting rotation and translation, while X axis are returned to its normal posterior divergence in sagittal plane in thoracic spine. METHODS Twenty-five consecutive adolescent idiopathic scoliosis patients (Lenke type 1) underwent posterior surgery with segmental pedicle screw fixation. Slotted tubes were attached to convex side screws. Two longitudinal rods were inserted through the end of tubes. Then, they were separated along the slots, driving the tubes into one plane, making the axis of the vertebrae coplanar and thus correcting transverse rotation and coronal translation. To obtain kyphosis, distal ends of the tubes were spread in thoracic spine. Correction was maintained by locking a definitive rod in the concave side, then tubes were retrieved and the convex side rod, inserted and tightened. Correction was assessed on preoperative and postoperative full-spine standing radiograph. Vertebral rotation was measured on computed tomography-scan and magnetic resonance imaging. RESULTS Preoperative average thoracic curves of 61 degrees were corrected to 16 degrees (73%). Preoperative average thoracolumbar curves of 39 degrees were corrected to 12 degrees (70%). Preoperative average thoracic apical rotation of 24 degrees was corrected to 11 degrees (56%). Preoperative average thoracic kyphosis of 18 degrees remained unchanged after surgery; however, no patients had kyphosis |
| Databáze: | OpenAIRE |
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