Patient-specific assessment of dysmorphism of the femoral head-neck junction: a statistical shape model approach

Autor: Vikas, Khanduja, Nick, Baelde, Andreas, Dobbelaere, Jan, Van Houcke, Hao, Li, Christophe, Pattyn, Emmanuel A, Audenaert
Rok vydání: 2015
Předmět:
Zdroj: The international journal of medical robotics + computer assisted surgery : MRCAS. 12(4)
ISSN: 1478-596X
Popis: Objective quantification of anatomical variations about the femur head-neck junction in pre-operative planning for surgical intervention in femoro-acetabular impingement is problematic, as no clear definition of average normal anatomy for a specific subject exists.We have defined the normal-equivalent of a subject's anatomy by using a statistical shape model and geometric shape optimization for finding correspondences, while excluding the femoral head-neck junction during the fitting procedure. The presented technique was evaluated on a cohort of 20 patients.Difference in α-angle measurement between the actual morphology and the predicted normal-equivalent, averaged 1.3° (SD 1.7°) in the control group versus 8° (SD 7.3°) in the patient group (p0.05).Defining normal equivalent anatomy is effective in quantifying anatomical dysmorphism of the femoral head-neck junction and as such can improve presurgical analysis of patients diagnosed with femoro-acetabular impingement. Copyright © 2016 John WileySons, Ltd.
Databáze: OpenAIRE