Journal article
The Pelvic Tear-Figure: A Three-Dimensional Analysis of the Anatomy and Effects of Rotation
Journal of pediatric orthopaedics, Vol.14(5), pp.650-659
09/1994
DOI: 10.1097/01241398-199409000-00019
PMID: 7962511
Abstract
Fluoroscopy and three-dimensional CT analysis were used to define the contributing anatomy and changes in appearance of the tear-figure with rotation of a pelvis. The tear-figure is a cortical structure of iliac and ischial bone that appears on anteroposterior (AP) roentgenograms of the pelvis. The contribution of these cortices to the pelvic tear-figure changes with rotation of a pelvis in a radiographic field. Cortices contributing to the tear-figure are not continuous throughout. The lateral border, inferior margin, and inferior one third of the medial border of the tear-figure is formed by a continuous segment of cortical bone extending from the deepest portion of the acetabulum around the cylindric acetabular notch, and along the inferior medial wall of the ischium. The superior two thirds of the medial border of the tear-figure consists of cortical bone extending superiorly along the medial wall of the ilium, which is not in continuity with the remainder of the components of the tear-figure. The tear-figure is not a structure of constant radiographic dimension. Its apparent dimensions change with rotation of the pelvis. The positioning of the patient for the AP pelvic roentgenogram is thus important when studying the effects of acetabular pathology on the appearance of the pelvic tear-figure.
Details
- Title: Subtitle
- The Pelvic Tear-Figure: A Three-Dimensional Analysis of the Anatomy and Effects of Rotation
- Creators
- Daniel Samani - Departments of Orthopaedic Surgery, Ohio State University Hospital, Columbus, Ohio, and University of Iowa Hospitals and Clinics, Iowa City, Iowa, U.S.AStuart Weinstein
- Resource Type
- Journal article
- Publication Details
- Journal of pediatric orthopaedics, Vol.14(5), pp.650-659
- Publisher
- Lippincott-Raven Publishers
- DOI
- 10.1097/01241398-199409000-00019
- PMID
- 7962511
- ISSN
- 0271-6798
- eISSN
- 1539-2570
- Language
- English
- Date published
- 09/1994
- Academic Unit
- Stead Family Department of Pediatrics; Orthopedics and Rehabilitation
- Record Identifier
- 9984040561302771
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