title: Lumbar pedicle morphology in adolescent idiopathic scoliosis.
abstract: Using computed tomography of lumbar spine pedicles, pedicle morphology was documented in 30 patients with adolescent idiopathic scoliosis. Lumbar pedicles are relatively symmetrical in patients with adolescent idiopathic scoliosis; however, a statistically significant difference was found between males and females at L2-L4. A trend for increased transverse pedicle width was observed on the concavity versus the convexity. At levels L3-L5, 90% of the pedicles were >5.5 mm but pedicles Li and 12 were smaller, only >5.5 mm in 34% and 42%, respectively. Safe insertion of 5.5-mm screws is possible at 13-15, but more cephalic pedicles necessitate caution.
authors.affiliation: Children's Hospital and Louisiana State University Health Sciences Center, New Orleans, LA 70118, USA.
authors.forename: Andrew G
authors.initials: AG
authors.lastname: King
authors.forename: Tara E
authors.initials: TE
authors.lastname: Mills
authors.forename: Norman B
authors.initials: NB
authors.lastname: Chutkan
authors.forename: Scott E
authors.initials: SE
authors.lastname: Strohmeyer
mesh_terms: D000293:Adolescent; D002648:Child; D015331:Cohort Studies; D005260:Female; D006801:Humans; D016268:Internal Fixators; D008159:Lumbar Vertebrae / Q000000981:diagnostic imaging / Q000473:pathology*; D008297:Male; D019637:Orthopedic Procedures / Q000379:methods; D011336:Probability; D011859:Radiography; D018570:Risk Assessment; D012600:Scoliosis / Q000000981:diagnostic imaging* / Q000473:pathology* / Q000601:surgery; D012680:Sensitivity and Specificity; D012720:Severity of Illness Index; D012737:Sex Factors