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The C2 isthmus screw provided sufficient biomechanical stability in the setting of atlantoaxial dislocation-a finite element study
BackgroundThe emerging of the C2 isthmus screw fixation technique is gaining popularity in the setting of atlantoaxial dislocation or other...
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C2 pedicle screw placement on 3D-printed models for the performance assessment of CTA-based screw preclusion
Background3-D printing technology has a large spectrum of applications in upper cervical spinal surgery, but none have evaluated the radiological...
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Three-dimensional reduction method with a modified C2 isthmus screw in irreducible atlantoaxial dislocation: a technical note
BackgroundThree-dimensional reduction plays a vital role in surgical reduction of irreversible atlantoaxial dislocation (IAAD). However, the most...
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Anatomical and imaging measurements of the angle between the axis of the lumbar pedicle and lateral isthmus margin and its clinical significance
BackgroundThis study aims to explore the measurement of the angle between the axis of the pedicle and the lateral margin of the isthmus on the lumbar...
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What is the C2 pedicle, pars interarticularis, and isthmus? Anatomical study and review of the literature regarding these confusing terms with proposal of new nomenclature
IntroductionThe atypical anatomy of the C2 vertebra has led to terminological discrepancies within reports and studies in the literature regarding...
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Buck technique supplemented by temporary intersegmental pedicle screw fixation to repair lumbar spondylolysis in youth
BackgroundLumbar spondylolysis is a bone defect in the pars interarticularis of the lumbar vertebral, which is a common cause of low back pain in...
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Anthropometric measurements of the foot cannot predict the screw diameter for fifth metatarsal fractures intramedullary fixation
PurposeThe present study aimed to evaluate the accuracy of anthropometric foot measurements in predicting the diameter of the intramedullary screw...
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Biportal endoscopic-assisted cortical bone trajectory screw placement and lumbar interbody fusion
BackgroundEndoscopically assisted screw fixation with lumbar interbody fusion is rarely performed. We succeeded in implanting the cortical bone...
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Anatomic trajectory for iliac screw placement adapts better to the morphological features of the pelvis of each individual than the S2 alar iliac screw: a radiological study
PurposeThe iliac fixation (IF) through the S2 ala permits the minimization of implant prominence and tissue dissection. An alternative to this...
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Biportal endoscopic bone graft repair and percutaneous screw fixation for lumbar spondylolysis—technical note and clinical outcomes
BackgroundLumbar spondylolysis involves a bony defect in the vertebral pars interarticularis, predominantly affecting the lower lumbar spine. This...
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The optimal introversion angle and length of pedicle screw to avoid L1-S1 vascular damage
Backgroundposterior pedicle screw fixation is common method, one of the most severe complications is iatrogenic vascular damage, no report...
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Morphology analysis of the C2 pediculoisthmic component and feasibility of safe C2 pedicle screw placement: comparison of multiplanar reconstruction versus traditional radiographic methods
BackgroundPreoperatively evaluating the feasibility of safe C2 pedicle screw placement is the key to avoiding iatrogenic vertebral artery injury....
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The feasibility of a new self-guided pedicle tap for pedicle screw placement: an anatomical study
PurposeTo investigate the safety and accuracy of applying a new self-guided pedicle tap to assist pedicle screw placement.
MethodsA new self-guided...
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Risk factor analysis of disc and facet joint degeneration after intersegmental pedicle screw fixation for lumbar spondylolysis
BackgroundPatients who do not respond to conservative treatment of the isthmus are often treated with surgery. We used direct repair plus...
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Higher pelvic incidence values are a risk factor for trans-iliac trans-sacral screw malposition in sacroiliac complex fracture treatment
BackgroundPercutaneous iliosacral (IS) screw fixation and trans-iliac trans-sacral (TITS) screw fixation are clinically effective treatments of...
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Biomechanical evaluation of the hybrid pedicle screw—cortical bone trajectory technique in transforaminal lumbar interbody fusion to adjacent segment degeneration—finite element analysis
BackgroundTransforaminal lumbar interbody fusion is an effective surgical treatment of intervertebral disk herniation. However, its clinical efficacy...
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Finite Element Analysis of Cortical Bone Trajectory Screw Resistance to Pullout During Exposure to Different Cortical Layers Based on AbaqusCEA Software
ObjectiveTo investigate the maximum anti-pullout force and stress distribution of cortical bone trajectory (CBT) screws during screw pullout after...
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Free-hand technique of C7 pedicle screw insertion using a simply defined entry point without fluoroscopic guidance for cervical spondylotic myelopathy patients with C3 to C6 instrumented by lateral mass screws: a retrospective cohort study
BackgroundNowadays, both lateral mass screw (LMS) and pedicle screw were effective instrumentation for posterior stabilization of cervical spine....
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Comparison of the clinical and radiographic outcomes of cortical bone trajectory and traditional trajectory pedicle screw fixation in transforaminal lumbar interbody fusion: a randomized controlled trial
PurposeTo compare the clinical outcomes and radiographic outcomes of cortical bone trajectory (CBT) and traditional trajectory (TT) pedicle screw...
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Cortical screw placement with a spinous process clamp guide: a cadaver study accessing accuracy
Background and objectiveThe Cortical Bone Trajectory (CBT) technique provides an alternative method for fixation in the lumbar spine in patients with...
