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A computer model for evaluating the osteotomy parameters of Chiari pelvic osteotomy
Karami, M ; Sharif University of Technology | 2010
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- Type of Document: Article
- DOI: 10.1007/s00264-009-0769-2
- Publisher: 2010
- Abstract:
- This study was conducted to evaluate the effect of the various osteotomy parameters on the biomechanical aspects of the hip joint on a computerised model. The data of the radiographs and a three-dimensional (3D) CT scan of six patients with coverage deficient hip joint were used to construct a 3D computer model. Then Chiari type osteotomies were simulated using various heights, angles and fibrocartilage thicknesses. A new angle called the mid acetabular center edge (MACE) angle was defined in a mid coronal CT cut. The optimum displacement for obtaining the maximum coverage averaged 73%. The angle and height of the osteotomy had a significant effect on the MACE angle (P value∈<∈0. 01). Our findings of these Chiari parameters may change the results of the osteotomy. The probability of adapting the proximal osteotomy segment to a deformed femoral head was explained by the model and a modified osteotomy "multiple height osteotomy" was proposed
- Keywords:
- Acetabulum ; Article ; Biomechanics ; Chiari pelvic osteotomy ; Clinical article ; Computer assisted tomography ; Computer model ; Computer prediction ; Evaluation research ; Femur head ; Fibrocartilage ; Hip ; Human ; Image analysis ; Image processing ; Joint radiography ; Pelvis osteotomy ; Priority journal ; Process optimization ; Three dimensional imaging ; Computer Simulation ; Hip Dislocation, Congenital ; Hip Joint ; Humans ; Models, Anatomic ; Osteotomy ; Pelvic Bones ; Surgical Procedures, Minimally Invasive ; Treatment Outcome
- Source: International Orthopaedics ; Volume 34, Issue 3 , 2010 , Pages 329-333 ; 03412695 (ISSN)
- URL: http://link.springer.com/article/10.1007%2Fs00264-009-0769-2