title: Magnetic resonance imaging observation of the conus medullaris.
abstract: We examined the anatomical height and shape of the conus medullaris in 602 cases using magnetic resonance imaging. The peak of the distribution of the conus height was at the middle one-third of L1. The comparison of the conus level had no significant relationships with age or sex, but the juvenile group had more a caudal distribution of the conus level. The shape of the conus medullaris was classified into three types, and the type B was most frequently observed.
authors.affiliation: Department of Orthopaedic Surgery, Juntendo University, School of Medicine, 2-1-1 Hongo, Bunkyo-ku, Tokyo 113-8421, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Arai
authors.forename: K
authors.initials: K
authors.lastname: Shitoto
authors.forename: M
authors.initials: M
authors.lastname: Takahashi
authors.forename: H
authors.initials: H
authors.lastname: Kurosawa
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016009:Chi-Square Distribution; D002648:Child; D002675:Child, Preschool; D005260:Female; D006801:Humans; D007223:Infant; D008159:Lumbar Vertebrae / Q000033:anatomy & histology*; D008279:Magnetic Resonance Imaging; D008297:Male; D008875:Middle Aged; D013116:Spinal Cord / Q000033:anatomy & histology*