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Distinguishing Acetabulum Cup Retroversion From Anteversion on Anteroposterior Radiographs After Total Hip Arthroplasty

Orthopedics Clinical Trial

Official title:
Distinguishing Acetabulum Cup Retroversion From Anteversion on Anteroposterior Radiographs After Total Hip Arthroplasty

Clinical Trial Summary

In this study, investigators will demonstrate and prove a ellipse method (Liaw's version) for measurement and detection of acetabulum cup retroversion.

Clinical Trial Description

Total hip arthroplasty (THA) is considered to be the best and most reliable treatment of end-stage hip disorders with satisfactory long-term clinical outcomes. However,the incidence of postoperative dislocation ranges from 0.3% to 3% in primary THA. The most important risk factor is malpositioning of implant components. Generally, excessive anteversion and retroversion increase risk of anterior and posterior hip dislocation respectively. Several radiological methods have been proposed to measure anteversion of the acetabular cup on plain radiographs, but most of these methods cannot accurately distinguish cup retroversion from anteversion. In this study, investigators will demonstrate and prove a ellipse method (Liaw's version) for measurement and detection of acetabulum cup retroversion. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT04780100
Study type Observational
Source Taipei Medical University
Contact Chen-Kun Liaw
Phone +886963969162
Email chenkunliaw@tmu.edu.tw
Status Not yet recruiting
Phase
Start date March 2021
Completion date May 2021
View Details
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