Biomechanica Hungarica, Évf. 2, Szám 1

Does the classification systems used in case of dysplastic hips actually aid in the planning of the acetabular replacement?

Szabó János, Laczkó András, Kiss László


The authors would like to know how accurately the superolateral coverage of the acetabular component can be determined by using the most wide-spread classification of Hartofilakidis(17) and Crowe(5) on AP radiographs of the pelvis. Can it determine whether there will be a need for replacement of the acetabular defect during surgery?  

At the University of Debrecen MHSC, Department of Orthopaedics we performed measurements on X-rays and CT scans of 21 hips from 16 patients. With the data obtained by geometrical and mathematical methods we can conclude that neither of the classifications alone provides enough information for accurate preoperative planning. The scale of the superolateral acetabular defect is influenced by other factors beside the cranial migration. For precise surgical planning further X-ray and CT scans are necessary. Based on our own experiences we also recommend the use of 3D models made with the rapid prototyping technique.


DOI: 10.17489/biohun/2009/1/05

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