A new method of measuring acetabular cup anteversion on simulated radiographs

نویسندگان
چکیده

منابع مشابه

Measurement of the acetabular cup anteversion on simulated radiographs.

Widmer (J Arthroplasty 2004;19:387) reported a protractor for measuring the anteversion of acetabular cups on radiographs but with limited precision. We intended to improve its precision by trigonometric mathematics. We measured the anteversion of the acetabular cups on 336 simulated radiographs using aforementioned 2 methods. The anteversion measured by Widmer's protractor ranged from 7 degree...

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Planar anteversion of the acetabular cup as determined from plain anteroposterior radiographs.

In total hip replacement, orientation of the cup is critical to the stability of the prosthesis. A new method to determine the angle of planar anteversion is described. A simple mathematical formula uses the measurements taken from anteroposterior radiographs to calculate the planar anteversion without reference to tables or charts. An experimental study in vitro has shown the efficacy of the f...

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Measuring acetabular component position on lateral radiographs - ischio-lateral method.

The standard method for the evaluation of arthritis and postoperative assessment of arthroplasty treatment is observation and measurement from plain films, using the flm edge for orientation. A more recent employment of an anatomical landmark, the ischial tuberosity, has come into use as orientation for evaluation and is called the ischio-lateral method. In this study, the use of this method wa...

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A method to calculate the acetabular cup anteversion after total hip replacement based on 3D coordinate system

Aim: To explore an accurate method to calculate acetabular cup anteversion after total hip arthroplasty. Method: 1) A 3D coordinate system was established with the center of the hip joint rotation center base as coordinate center. The acetabular exit plane and Pettersson formula acetabular anteversion and Riten Pradhan formula acetabular anteversion and acetabular true anteversion were drawn; 2...

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An analysis of the best method for evaluating anteversion of the acetabular component after total hip replacement on plain radiographs.

Several radiological methods of measuring anteversion of the acetabular component after total hip replacement (THR) have been described. These studies used different definitions and reference planes to compare methods, allowing for misinterpretation of the results. We compared the reliability and accuracy of five current methods using plain radiographs (those of Lewinnek, Widmer, Liaw, Pradhan,...

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ژورنال

عنوان ژورنال: International Orthopaedics

سال: 2012

ISSN: 0341-2695,1432-5195

DOI: 10.1007/s00264-012-1583-9