Morphometric analysis of the thoracic and lumbar spine in Japanese on the use of pedicle screws

Kenya Nojiri, Morio Matsumoto, Kazuhiro Chiba, Yoshiaki Toyama

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

The pedicle screw and hook have become popular instruments in treating spinal deformity and disease. This study gathered morphological data on thoracic and lumbar spines in a Japanese population that should serve as useful reference for posterior instrumentation surgery. One hundred and three dry bones were used to investigate the morphology of pedicle and facet in thoracic and lumbar spines. Measurements included the diameter and axial length of pedicle from T8 to L5, height and width of facets and thickness of articular processes from T1 to T12, and axial angle of pedicle from T1 to L5. The diameter and axial length of pedicle were smallest at T8, diameter was largest at L5 and axial length was largest at L3. Height of facets and thickness of articular processes were largest at T12. Men tended to have larger pedicles and facets than women. Transverse angle of pedicle was smallest at T12. These precise data may provide useful information when performing posterior instrumentation surgery and when developing new spinal implant systems for Asians.

Original languageEnglish
Pages (from-to)123-128
Number of pages6
JournalSurgical and Radiologic Anatomy
Volume27
Issue number2
DOIs
Publication statusPublished - 2005 Apr 1

Keywords

  • Drybone
  • Japanese
  • Lumbar spine
  • Morphology
  • Thoracic spine

ASJC Scopus subject areas

  • Anatomy
  • Surgery
  • Pathology and Forensic Medicine
  • Radiology Nuclear Medicine and imaging

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