Directionality of Lumbosacral Fractional Curve Relative to C7 Plumb Line, A Novel Index Associated with Postoperative Coronal Imbalance in Patients with Degenerative Lumbar Scoliosis
| Autor: | Cheng Chi, Zheng Wang, Jiandang Zhang, Pengfei Chi |
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| Rok vydání: | 2020 |
| Předmět: |
Male
Radiography 03 medical and health sciences 0302 clinical medicine Lumbar Risk Factors Medicine Humans Orthopedics and Sports Medicine Postural Balance Plumb bob Balance (ability) Aged Retrospective Studies Postoperative Care 030222 orthopedics Lumbar Vertebrae Cobb angle business.industry Middle Aged Confidence interval Spinal Fusion Scoliosis Coronal plane Case-Control Studies Cervical Vertebrae Female Neurology (clinical) business Nuclear medicine 030217 neurology & neurosurgery Lumbosacral joint |
| Zdroj: | Spine. 46(6) |
| ISSN: | 1528-1159 |
| Popis: | STUDY DESIGN Retrospective case-control radiographic study. OBJECTIVE The aim of this study was to explore whether directionality of lumbosacral fractional curve relative to C7 plumb line (PL) affected postoperative coronal imbalance in patients with degenerative lumbar scoliosis (DLS). SUMMARY OF BACKGROUND DATA The spatial relationship between lumbar main curve and C7 PL was reported to have impact on postoperative coronal imbalance in DLS. Although fractional curve played more important role than lumbar main curve in DLS, the spatial relationship between fractional curve and C7 PL and their impact on the postoperative coronal balance are still unknown. METHODS One hundred one DLS patients treated with posterior instrumented fusion were reviewed. Coronal measurements included C7 migration, fractional curve, L4/L5 coronal tilt, major Cobb angle. Based on directionality of fractional curve (orientation of L4 coronal tilt was used to represent it) relative to C7 PL preoperatively, coronal patterns was separated into: consistency pattern, L4 coronally tilts toward C7 PL; opposition pattern, L4 coronally tilts opposite C7 PL; the distributions of these two patterns and Type A, B,C were analyzed. According to postoperative C7 migration, patients were divided into imbalanced group and balanced group. RESULTS Compared to balanced group, the imbalanced group had higher percentage of preoperative consistency pattern (80.6% vs. 33.8%, P |
| Databáze: | OpenAIRE |
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