Evaluation of the Reliability and Validity of the Crawford Classification of Congenital Tibial Dysplasia

Abstract

The objective of this study is to analyze the reliability and validity of a classification system to assess tibial dysplasia in neurofibromatosis type 1. Radiographs of the lower extremity were collected on 36 individuals with NF1 and tibial bowing. Each radiograph (AP and lateral) was scored as either type I, type IIA, type IIB, or type IIC by the author of the peer-reviewed published criteria of Crawford (Crawford AH and Schorry EK. 1999. J Am Academy of Orthopaedic Surgeons; 7:217-230). Dr. Crawford scored 16 as type I, 8 as type IIA, 7 as type IIB, and 5 as type IIC. The same set of radiographs was sent to 27 consented volunteers in the radiology and orthopedic communities, and 21 provided a rating. Each volunteer was asked to re-classify the set of radiographs 3 months later to assess the test-retest reliability. 12 reviewers of the first set re-reviewed the radiographs as a second rating. The analyses are underway and being prepared for submission for publication.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 2007
Accession Number
ADA483195

Entities

People

  • David H. Viskochil
  • David. A. Stevenson
  • John C. Carey

Organizations

  • University of Utah

Tags

DTIC Thesaurus Topics

  • Bone And Bones
  • Bone Diseases
  • Bone Fractures
  • Data Analysis
  • Diseases And Disorders
  • Genetics
  • Health Services
  • Institutional Review Board
  • Medical Genetics
  • Medical Personnel
  • Musculoskeletal Diseases
  • Neurofibromatosis
  • Orthopedics
  • Osteogenesis
  • Public Health
  • Radiology

Fields of Study

  • Medicine

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