Computer-assisted single- or double-cut oblique osteotomies for the correction of lower limb deformities |
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Authors: | Belei P Schkommodau E Frenkel A Mumme T Radermacher K |
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Affiliation: | Helmholtz-Institute for Biomedical Engineering of the RWTH Aachen University, Pauwelstrasse 20, Aachen, D-52074, Germany. belei@hia.rwth-aachen.de |
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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. |
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