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A 3D Parameter Can Guide Concave Rod Contour for the Correction of Hypokyphosis in Adolescent Idiopathic Scoliosis
- Source :
- Spine. 45:E1264-E1271
- Publication Year :
- 2020
- Publisher :
- Ovid Technologies (Wolters Kluwer Health), 2020.
-
Abstract
- STUDY DESIGN Retrospective. OBJECTIVE To evaluate the effect of preoperative rod shape on 3D spinal deformity correction. SUMMARY OF BACKGROUND DATA Differential rod contouring is a surgeon-dependent process based on an estimate of 3D deformity correction sought and the flexibility of the spine. An objective measure to this otherwise subjective scoliosis correction technique is lacking. METHODS A series of adolescent idiopathic scoliosis (AIS) patients with right, thoracic major curves, preoperative rod contour tracings, and EOS imaging was evaluated. All patients underwent posterior spinal fusion with 5.5 mm steel rods contoured prior to insertion. 3D reconstructions were generated pre- and postoperatively using sterEOS software (EOS Imaging) and imported into MATLAB (Mathworks) for analysis. A new measurement of the maximum perpendicular distance from the preinsertion concave rod contour to the preoperative 3D sagittal spinal reconstruction was defined as rod to 3D spine distance (RSD). Linear regressions were used to identify relationships between pre and postoperative parameters, including RSD and 3D thoracic kyphosis. RESULTS Ninety-nine patients were included. Average preoperative concave rod angle decreased from (48 ± 10°) preoperatively to 26 ± 6° postoperatively (P
- Subjects :
- Male
Adolescent
genetic structures
medicine.medical_treatment
Bone Screws
Kyphosis
Spinal deformity correction
Idiopathic scoliosis
Scoliosis correction
Neurosurgical Procedures
Thoracic Vertebrae
Cohort Studies
Young Adult
03 medical and health sciences
Imaging, Three-Dimensional
0302 clinical medicine
medicine
Humans
Perpendicular distance
Orthopedics and Sports Medicine
Child
Retrospective Studies
030222 orthopedics
Contouring
business.industry
medicine.disease
Sagittal plane
Spinal Fusion
medicine.anatomical_structure
Scoliosis
Spinal fusion
Female
Neurology (clinical)
Nuclear medicine
business
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 15281159 and 03622436
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Spine
- Accession number :
- edsair.doi.dedup.....e105dd73cbb0af63e5c7cfc8e014d49e