Mechanisms of curve progression following sublaminar (Luque) spinal instrumentation

James O. Sanders, Mona Evert, Earl A. Stanley, Albert E. Sanders

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

Fifty-two patients with Luque instrumentation wore reviewed for spinal deformities. Forty-two patients were reviewed during 1 year ] I unrest 7, 2 years I at follow-up. Two patients were included who lost correction within 1 year (both e months). Follow up averaged 2.9 years. Curve causes primarily were neuromuscular but included ore was caused by idiopathic scollofils, four by Scheuermann's disease, and 1 by post-laminectomy kyphosis. The Cobb angle progressed In 45^ of patients postoperatively. Factors contributing to progression Included progressive vertebral rotation or the crankshaft phenomenon |11), wire pull out (71, progressive pelvic obliquity (4), rod bending (31, psaudarlhrcsis <21, and rod migration (2). Factors correlating with progression were kyphosis, postoperative curve > 35® prooperative curve > 60*, and not fusing tD the pelvis In nonambulators. Crankshaft was common in patients Risoer II or less but did not occur in more mature patients.

Original languageEnglish (US)
Pages (from-to)781-789
Number of pages9
JournalSpine
Volume17
Issue number7
DOIs
StatePublished - Jul 1992

Keywords

  • Kyphosis
  • Loss of correction
  • Luque instrumentation
  • Scoliosis

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine
  • Clinical Neurology

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