The Reliability of Intraoperative Crossbar Technique in Determining the Upper Instrumented Vertebra (UIV) Tilt Angle for Adolescent Idiopathic Scoliosis (AIS) Undergoing Posterior Spinal Fusion
| Autor: | Xue Han Chian, Sherwin Johan Ng, Chee Kidd Chiu, Mun Keong Kwan, Pheng Hian Tan, Saw Huan Goh, Chris Yin Wei Chan, Yun Hui Ng, Xin Yi Ler, Elrofai Suliman Bashir |
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| Rok vydání: | 2019 |
| Předmět: |
Cosmetic appearance
Adolescent Intraclass correlation Radiography medicine.medical_treatment Idiopathic scoliosis 03 medical and health sciences 0302 clinical medicine medicine Humans Orthopedics and Sports Medicine Reliability (statistics) Orthodontics 030222 orthopedics Intraoperative Care business.industry Reproducibility of Results Spine Biomechanical Phenomena Vertebra Spinal Fusion medicine.anatomical_structure Tilt (optics) Scoliosis Spinal fusion Surgery Neurology (clinical) business 030217 neurology & neurosurgery |
| Zdroj: | Clinical Spine Surgery: A Spine Publication. 32:256-262 |
| ISSN: | 2380-0186 |
| DOI: | 10.1097/bsd.0000000000000769 |
| Popis: | Study design Retrospective study. Objective This study looked into whether crossbar can reliably measure Upper Instrumend Vertebra (UIV) tilt angle intraoperatively and accurately predict the UIV tilt angle postoperatively and at final follow-up. Summary of background data Postoperative shoulder imbalance is a common cause of poor cosmetic appearance leading to patient dissatisfaction. There were no reports describing the technique or method in measuring the UIV tilt angle intraoperatively. Therefore, this study was designed to look into the reliability and accuracy of the usage of intraoperative crossbar in measuring the UIV tilt angle intraoperatively. Methods Lenke 1 and 2 Adolescent Idiopathic Scoliosis patients who underwent instrumented Posterior Spinal Fusion using pedicle screw constructs with minimum follow-up of 24 months were recruited for this study. After surgical correction, intraoperative UIV tilt angle was measured using a crossbar. Immediate postoperative and final follow up UIV tilt angle was measured on the standing anteroposterior radiographs. Results A total of 100 patients were included into this study. The reliability of the intraoperative crossbar to measure the optimal UIV tilt angle intraoperatively was determined by repeated measurements by assessors and measurement by different assessors. We found that the intra observer and inter observer reliability was very good with intraclass correlation coefficient values of >0.9. The accuracy of the intraoperative crossbar to measure the optimal UIV tilt angle intraoperatively was determined by comparing this measurement with the postoperative UIV tilt angle. We found that there was no significant difference (P>0.05) between intraoperative, immediate postoperative, and follow-up UIV tilt angle. Conclusions The crossbar can be used to measure the intraoperative UIV tilt angle consistently and was able to predict the postoperative UIV tilt angle. It was a cheap, simple, reliable, and accurate instrument to measure the intraoperative UIV tilt angle. |
| Databáze: | OpenAIRE |
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