ArticleSpine deformity2026
Defining anatomical landmarks for simulated juxtapedicular screw placement for posterior spinal fusion in adolescent patients with scoliosis.
Article in Spine deformity, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.
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Who cites it
1 citing paper in PubMed, 1 synthesis or guideline pooled it.
- Comparative clinical performance of robotic-assisted systems in spinal deformity surgery: focus on perioperative outcomes and pedicle screw accuracy.Journal of robotic surgery · 2026Pooled it
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
purposeTo define anatomical landmarks on the vertebrae at each spinal level for surgeons to use intraoperatively as a guide for the placement of juxtapedicular screws in the setting of hypoplastic or absent pedicles.
methodsPreoperative computed tomography (CT) of patients with adolescent idiopathic scoliosis (AIS) was analyzed for thoracic pedicles ≤ 3 mm wide, measured between the outer cortices at the isthmus, as these may require a juxtapedicular screw for safe placement. For these pedicles, a simulated juxtapedicular screw was placed into the vertebrae using image reconstruction software. The distance from the screw's insertion point was measured in the axial plane to the medial and lateral borders of the superior articular process (SAP) and to the posterior tip of the transverse process (TP), and in the sagittal plane to the junction of the SAP and TP. Screw trajectory angle was measured between the longitudinal axis of the screw and the sagittal and axial planes.
resultsOf 6324 pedicles, a total of 378 pedicles (6.0%) met inclusion. The average distance to the medial and lateral borders of the SAP was 14.7 ± 3.4 mm and 10.7 ± 5.4 mm, respectively; to the tip of the TP was 9.0 ± 3.9 mm, and to the TP/SAP junction 2.8 ± 1.6 mm. The average angle in the axial plane was 21.1 ± 4.4° and in the sagittal plane it was - 4.2 ± 3.6°.
conclusionsPreoperative CT scans were used to map a safe starting point and trajectory for juxtapedicular screw placement in thoracic vertebrae. These findings can assist surgeons with thoracic pedicle screw placement.
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