title: Lumbar morphometry: a study of lumbar vertebrae from a pakistani population using computed tomography scans.
abstract: METHODS
  A cross-sectional study.
  
  
  OBJECTIVE
  To describe the characteristics of lumbar vertebrae of Pakistani patients reporting at a tertiary care hospital and compare with studies from other populations.
  
  
  BACKGROUND
  Several studies have been conducted to determine morphometry of lumbar vertebrae. Most of the studies involve Caucasian populations, still data on other populations still sparse. This is the first study describing lumbar morphometry of a Pakistani population.
  
  
  METHODS
  An observational study was conducted based on a review of thin-cut (3 mm) computed topographic images of lumbar vertebrae. Two-hundred and twenty vertebrae from forty-nine patients were studied, and various dimensions were analyzed.
  
  
  RESULTS
  Generally, the size of the vertebrae, vertebral canals and recesses were found to be greater in male patients. The difference was statistically significant for transverse and anteroposterior diameters of the vertebral bodies and sagittal diameter of pedicles on the left side (p<0.05). Comparison of populations revealed statistically significant differences in pedicle dimensions between Pakistani population and others.
  
  
  CONCLUSIONS
  This study provides anatomical knowledge of the lumbar region in a sample population of Pakistan. There were significant differences in various dimensions of lumbar vertebrae between female and male patients. This would prove to be critical for performing a safe operation.
authors.affiliation: Department of Neurosurgery, Aga Khan University Hospital, Karachi, Pakistan.
authors.forename: Muhammad M
authors.initials: MM
authors.lastname: Alam
authors.affiliation: Department of Neurosurgery, Aga Khan University Hospital, Karachi, Pakistan.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Waqas
authors.affiliation: Aga Khan University Hospital and Medical College, Karachi, Pakistan.
authors.forename: Hussain
authors.initials: H
authors.lastname: Shallwani
authors.affiliation: Department of Neurosurgery, Aga Khan University Hospital, Karachi, Pakistan.
authors.forename: Gohar
authors.initials: G
authors.lastname: Javed
keywords: Lumbar vertebra; Pakistan; Pakistani population; Vertebral dimensions