CC BY-NC-ND 4.0 · Rev Bras Ortop (Sao Paulo) 2019; 54(04): 428-433
DOI: 10.1055/s-0039-1693044
Artigo Original | Original Article
Sociedade Brasileira de Ortopedia e Traumatologia. Published by Thieme Revnter Publicações Ltda Rio de Janeiro, Brazil

Comparative Evaluation of Cross-table and Ducroquet Incidences for Measurement of the Hip Alpha Angle[]

Article in several languages: português | English
1  Grupo de Quadril, Departamento de ortopedia e Traumatologia, Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP), Irmandade Santa Casa de Misericórdia, São Paulo, SP, Brasil
,
Marcelo Cavalheiro Queiroz
1  Grupo de Quadril, Departamento de ortopedia e Traumatologia, Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP), Irmandade Santa Casa de Misericórdia, São Paulo, SP, Brasil
,
Walter Ricioli Junior
1  Grupo de Quadril, Departamento de ortopedia e Traumatologia, Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP), Irmandade Santa Casa de Misericórdia, São Paulo, SP, Brasil
,
Marco Rudelli
1  Grupo de Quadril, Departamento de ortopedia e Traumatologia, Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP), Irmandade Santa Casa de Misericórdia, São Paulo, SP, Brasil
,
Marcus Aurelius Araújo Nunes
1  Grupo de Quadril, Departamento de ortopedia e Traumatologia, Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP), Irmandade Santa Casa de Misericórdia, São Paulo, SP, Brasil
,
Denise Tokechi Amaral
2  Serviço de Radiologia, Hospital Sírio Libanês, São Paulo, SP, Brasil
› Author Affiliations
Further Information

Publication History

05 March 2019

22 January 2019

Publication Date:
20 August 2019 (online)

Abstract

Objective The purpose of the present paper is to compare the equivalence of the measurement of the alpha angle using the Ducroquet and cross-table lateral views.

Methods We have recruited 90 patients, resulting in 95 hips. We have standardized the realization of the radiographic views. The incidence of the lateral cross-table views were taken with 15° of internal rotation with the patient in the supine position, and the incidence of the Ducroquet views was standardized with the patient in the supine position, with 90° of flexion and 45° of abduction of the hip. The alpha angle was measured in both lateral views, by two musculoskeletal radiologists. The measurements were performed in 2 different times: an initial evaluation and another 4 weeks afterwards. The t Student test was used and calculated the intraclass correlation coefficient (ICC).

Results We have found a good intraobserver correlation for both views in different times; there was no statistically significant difference between the measurements performed by the two views. However, the interobserver correlation was low.

Conclusion In conclusion, the Ducroquet profile view is a good choice for the α angle measurement and can be used instead of the cross-table view.

Work performed at the Hip Group, Orthopedics and Traumatology Department, Irmandade Santa Casa de Misericórdia, Faculdade de Ciências Médicas da Santa Casa de São Paulo (FCMSCSP), São Paulo, SP, Brazil.