Aorta Movement in Patients With Scoliosis After Posterior Surgery.
STUDY DESIGN.: Retrospective analysis. OBJECTIVE.: To evaluate movement of the aorta in patients with scoliosis who have undergone the posterior correction and fusion. SUMMARY OF BACKGROUND DATA.: Surgeons check preoperative imaging for pedicle screw placement, but past analyses indicated that the aorta shifts after scoliosis surgery. Few studies, however, evaluated the aorta movement in detail. METHODS.: A total of 22 patients with a right thoracic curve underwent posterior instrumentation and fusion. The average age at surgery was 17.2 years. The average of the preoperative Cobb angle was 65.2 degrees which decreased to 20.0 degrees .Computed-tomographic data were analyzed by multiplanar reconstruction. In our coordinate system, the middle of the base of the left superior facet was set as the origin and a line connecting the middle points of both bases of the superior facets was defined as the X-axis. We defined the angle and the distance to describe the aorta position and analyzed the movement of the aorta relative to the spine. Deformity parameters were examined to determine their correlation with the aorta parameters.We simulated variable pedicle screw placement and defined a warning pedicle when the aorta enters the expected area of the screw and examined them in 24 scenarios. RESULTS.: The aorta moved 4.7 +/- 3.0 mm on an average. The aorta had a tendency to migrate in the anteromedial direction and this movement correlated with preoperative apical vertebral translation, preoperative sagittal alignment, and change of sagittal alignment. The ratio of warning pedicles at the middle thoracic level (T7-T9) increased after deformity correction. CONCLUSION.: The aorta moved anteromedially relative to the spine after the posterior correction and the risk of the aorta by a pedicle screw increased by correction of the deformity at the middle thoracic spine. Surgeons are recommended to anticipate the aorta movement in the surgical planning.
From the *Department of Orthopaedic Surgery, the University of Tokyo, Tokyo, Japan; and the daggerDepartment of Orthopaedic Surgery, the Saitama Medical Center, Saitama, Japan.
This article was published in the following journal.
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/20714278
- DOI: http://dx.doi.org/10.1097/BRS.0b013e3181cf0cb6
Study Design. Clinical study with pre- and postoperative back photographs and postoperative Scoliosis Research Society-22 survey in patients who had surgery for idiopathic scoliosis.Objective. To dete...
The main distinctive aspect of Juvenile Idiopathic Scoliosis (JIS) with respect to Adolescent Idiopathic Scoliosis (AIS) is the high risk of severe deformity and surgery. Approximately 70% of curves i...
Scoliosis refers to curves exceeding 10 degrees observed through posterioanterior direct radiography. In fact, the diagnosis for idiopathic scoliosis is accepted to exclude already available causes. T...
We have analyzed clinical management of 137 patients with atherosclerotic aneurysms of the abdominal aorta combined with coronary artery disease treated during last 10 years in the First Cardiac Surge...
Scoliosis affects up to 3% of adolescents, some babies and young children, and many children with existing neuromuscular and syndromic conditions. It is the most common spinal deformity. Not all child...
The purpose of this study is to find out the outcomes of using the PASS LP System to correct adolescent idiopathic scoliosis. This system is a unique set of spinal instrumentation used to ...
Investigation of tranexamic acid (TXA) for reducing perioperative blood loss and transfusion requirement in pediatric patients with secondary scoliosis undergoing posterior spinal fusion.
This research is being done to compare two methods of surgery to treat scoliosis and/or kyphosis of the spine.
Nearly all patients with Duchenne’s Muscular Dystrophy (DMD) have scoliosis. Posterior instrumented spinal fusion, which is a surgery to correct scoliosis, has been shown to improve qua...
The purpose of this study is to evaluate the effects of continuous local anesthetic delivery on the immediate post-op recovery of patients undergoing spinal fusion surgery for congenital o...
Medical and Biotech [MESH] Definitions
The portion of the descending aorta proceeding from the arch of the aorta and extending to the DIAPHRAGM, eventually connecting to the ABDOMINAL AORTA.
Surgery which could be postponed or not done at all without danger to the patient. Elective surgery includes procedures to correct non-life-threatening medical problems as well as to alleviate conditions causing psychological stress or other potential risk to patients, e.g., cosmetic or contraceptive surgery.
Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.
Complications that affect patients during surgery. They may or may not be associated with the disease for which the surgery is done, or within the same surgical procedure.
A condition of persistent pain and discomfort in the BACK and the LEG following lumbar surgery, often seen in patients enrolled in pain centers.