International Clinical Trial: Proximal Pedicle Screw Placement Parameters and Superior Facet Joint Violation After Posterior Lumbar Instrumentation: A Postoperative CT-Based Study to Define Low-Risk Placement Ranges

Geneva, Oct. 9 -- International Clinical Trials Registry received information related to the study (ChiCTR2600133606) titled 'Proximal Pedicle Screw Placement Parameters and Superior Facet Joint Violation After Posterior Lumbar Instrumentation: A Postoperative CT-Based Study to Define Low-Risk Placement Ranges' on Sept. 29.

Study Type: Observational study

Study Design: Cohort study

Primary Sponsor: The Affiliated Hospital of Xuzhou Medical University

Condition: Superior Facet Joint Violation

Intervention: Any facet joint violation group: Babu grades 1-3:NA

Recruitment Status: Not Recruiting

Phase: N/A

Date of First Enrollment: 2026-10-10

Target Sample Size: Any facet joint violation group: Babu grades 1-3:100;Non-violation ...