title: Computer-assisted single- or double-cut oblique osteotomies for the correction of lower limb deformities.
abstract: Corrective osteotomy interventions on lower extremities are widely accepted procedures for restoring axial alignment of lower limbs. However, some studies reveal failure rates of up to 70 per cent in a 10 year time frame, which indicates that the success of corrective osteotomies depends on multiple factors. Based on a comprehensive review of error sources among conventional correction osteotomy interventions, a novel approach was developed in order to reduce these error sources among all clinical working steps (deformity determination, planning, and intra-operative realization). The article describes the implemented methodology for realizing optimal correction osteotomies based on a six-dimensional or 12-dimensional optimization module for single- and double-cut oblique osteotomies. The results show that the realized planning and navigation concept enables reduction in the error sources among the clinical working steps of correction osteotomy interventions.
authors.affiliation: Helmholtz-Institute for Biomedical Engineering of the RWTH Aachen University, Pauwelstrasse 20, Aachen, D-52074, Germany. belei@hia.rwth-aachen.de
authors.forename: P
authors.initials: P
authors.lastname: Belei
authors.forename: E
authors.initials: E
authors.lastname: Schkommodau
authors.forename: A
authors.initials: A
authors.lastname: Frenkel
authors.forename: T
authors.initials: T
authors.lastname: Mumme
authors.forename: K
authors.initials: K
authors.lastname: Radermacher
mesh_terms: D003198:Computer Simulation; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D038061:Lower Extremity Deformities, Congenital / Q000473:pathology* / Q000601:surgery*; D008954:Models, Biological; D010027:Osteotomy / Q000379:methods*; D012371:Robotics / Q000379:methods; D012984:Software; D025321:Surgery, Computer-Assisted / Q000379:methods*; D014584:User-Computer Interface