The biomechanical outcome after total hip replacement: Quantitative biomechanical evaluation of Computer-Assisted Femur First THR
Year: 2015
Type: dissertation
Abstract: Sub-optimal implant positioning is one of the leading causes for implant failure in Total Hip Replacement (THR). Computer-assisted surgery in combination with ‘femur first’ (CAS FF) is believed to improve implant positioning and post-operative hip biomechanics. Combining patient-specific anatomy with patient-specific motion allows the computation of patient-specific biomechanics by means of musculoskeletal models (MM). This work applies MM to investigate operation-dependent differences between conventional THR and CAS FF in terms of biomechanics also focusing on MIS-approaches. A computational study showed that MIS approaches are superior to conventional approaches in terms of biomechanics. A prospective randomized controlled trial showed that CAS FF leads to a significantly improved hip reaction force (hrf) orientation compared to conventional THR. A trend for improved gait post-operatively for the CAS FF group did not reach statistical significance. The Improved hrf symmetry of the CAS FF group indicates a possible long-term benefit. Biomechanical load-cases as quantified by MM are an integral measure of patient-specific motion and anatomy and therefore able to provide a more complete picture of patients or populations in terms of biomechanics. The improved hrf orientation shows that the concept of combined anteversion leads to a favorable load-case scenario at an early stage.
Author: Tim Weber
Language: English
Subfield: Surgery
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W2575809165