Thread Delamination in 4.5 mm AO Cannulated Screws: A Small Case Series in the Pediatric Trauma Population.

Background: Thread delamination associated with cannulated screws have been reported but likely represent an under-recognized complication in the orthopaedic literature. The purpose of this study is to report the occurrence of repeated hardware failures through thread delamination in the setting of a commonly used orthopaedic cannulated screw implant in a small cohort involving pediatric fracture care at a single academic level I trauma center.

Methods: Between August 2015 and December 2020, 9 cases of hardware failure associated with 4.

Pull-out of Upper Thoracic Pedicle Screws Can Cause Spinal Canal Encroachment in Growing Rod Treatment.

Background: Proximal foundation failure is a common complication of growing rod (GR) treatment for early-onset scoliosis. Spinal canal encroachment due to pull-out of pedicle screw used as proximal foundation has been anecdotally reported in GR patients. The aim of this study is to report the prevalence of spinal canal encroachment of pedicle screws in GR treatment and determine risk factors using a single-center cohort.

Pedicle Subtraction Osteotomy Versus Multiple Posterior Column Osteotomies in Severe and Rigid Neuromuscular Scoliosis.

Study Design: Retrospective analysis.

Objective: The aim of this study is to compare the safety and efficacy of the apical pedicle subtraction osteotomy (PSO) technique with multiple posterior column osteotomies (PCOs) in nonambulatory patients with severe, rigid neuromuscular scoliosis.

Summary Of Background Data: Neuromuscular scoliosis frequently causes intolerance to sitting due to pelvic obliquity, trunk decompensation, and associated back and rib impingement pain which diminish the patient's functional capacity.

Paper #44: Pull-Out of the Upper Thoracic Pedicle Screws Can Cause Spinal Canal Encroachment in Growing Rod Treatment.

The aim of this study is to report the prevalence of spinal canal encroachment of pedicle screw in proximal anchor of GR construct and determine risk factors using a single-center cohort.

The effect of pedicle screw insertion at a young age on pedicle and canal development.

Study Design: A longitudinal case study.

Objective: To determine whether pedicle screws placed in an immature spine exert effect on the continued growth of the vertebral body.

Summary Of Background Data: Pedicle screws have revolutionized surgical treatment of spinal deformities by allowing a mode of secure fixation that provides consistently better correction rates in adults and adolescents.