European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society
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Cervical pedicle screw (CPS) instrumentation offers significant biomechanical advantages compared to lateral mass or transarticular fixation. Nonetheless, malpositioning complications constitute a relevant concern. Customized patient-specific 3D-printed templates have been developed to improve CPS placement accuracy and safety. The aim of this study is to present our experience with this surgical technique and its accuracy and safety in a clinical setting. ⋯ Cervical pedicle screw placement using patient-specific guides is safe and accurate, supporting the feasibility of this technique in posterior cervical spine fusion surgery.
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To determine the association of the ultrasound reflection coefficient index and other clinical parameters to predict curve progression in children with AIS. ⋯ This pilot study showed that curve progression is associated with the Risser sign, KA, and RC index. Other parameters and a more extensive clinical study should be combined to develop a higher-accuracy prediction model.
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This study was designed to develop a machine learning (ML) model that predicts future Cobb angle in patients with adolescent idiopathic scoliosis (AIS) using minimal radiographs and simple questionnaires during the first and second visits. ⋯ The ML-based model using items commonly evaluated at the first and second visits accurately predicted future Cobb angles in female patients with AIS.
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Orthogonal cage rotation is an essential technique in oblique lateral interbody fusion (OLIF). However, during OLIF at L4-5, this is often limited due to iliac crest. Angle-adjustable cages are designed to insert cages without interference from iliac crest, but there are few studies on whether they are useful. We aimed to compare the radiological outcomes between the conventional cage and angle-adjustable cage inOLIF at L4-5. ⋯ Our study demonstrated that using an angle-adjustable cage at L4-5 OLIF is more advantageous for orthogonal cage rotation and anterior cage positioning. In L4-5 OLIF, an angle-adjustable cage system is a particularly good option for patients with a high iliac crest.
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Adolescent idiopathic scoliosis (AIS) is a common deformity, requiring regular screening and monitoring. While radiological measurements are considered the gold standard, X-ray exposure poses significant risks. A noninvasive spinal device offers a radiation-free alternative for measuring spinal curvature. This study evaluates the validity and reliability of its measurements and explores factors associated with measurement discrepancy. ⋯ This device measurement demonstrated good reliability and validity compared with radiological measurement, highlighting its safety and feasibility for screening and monitoring AIS progression. However, high BMI, great scoliosis magnitude, and large MVR were associated with measurement inaccuracy.