6533b7dcfe1ef96bd127203e
RESEARCH PRODUCT
A new method to evaluate the influence of the glenosphere positioning on stability and range of motion of a reverse shoulder prosthesis
Tommaso IngrassiaLorenzo NalboneAntonio D'arienzoVito RicottaGiuseppe PorcelliniMichele D'arienzoVincenzo Nigrellisubject
Range of MotionJoint Instabilitymusculoskeletal diseasesShoulderReverse shoulders prosthesismedicine.medical_treatmentReplacementGuidelines as TopicProsthesis DesignProsthesisInstability ratioArthroplasty03 medical and health sciencesCAD modelling &0302 clinical medicinemedicineHumansRange of Motion ArticularSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria IndustrialeTomographyGeneral Environmental Science030222 orthopedicsROMShoulder Jointbusiness.industryCAD modelling & simulation; Digital shape acquisition; Instability ratio; Reverse shoulders prosthesis; ROM; Arthroplasty Replacement Shoulder; Case-Control Studies; Guidelines as Topic; Humans; Joint Instability; Prosthesis Design; Range of Motion Articular; Shoulder Dislocation; Shoulder Impingement Syndrome; Shoulder Joint; Shoulder Prosthesis; Tomography X-Ray ComputedShoulder DislocationWork (physics)Shoulder Prosthesis030208 emergency & critical care medicinesimulationShoulder ProsthesisArthroplastyX-Ray ComputedTilt (optics)medicine.anatomical_structureShoulder Impingement SyndromeArthroplasty Replacement ShoulderCase-Control StudiesShoulder Impingement SyndromeGeneral Earth and Planetary SciencesShoulder jointTomography X-Ray ComputedRange of motionbusinessDigital shape acquisitionCAD modelling & simulationArticularBiomedical engineeringdescription
Abstract Purpose Shoulder instability and reduced range of motion are two common complications of a total reverse shoulder arthroplasty. In this work, a new approach is proposed to estimate how the glenoid component positioning can influence the stability and the range of motion of a reverse shoulder prosthesis. Materials and methods A standard reverse shoulder prosthesis has been analysed. To perform virtual simulation of the shoulder-prosthesis assembly, all the components of the prosthesis have been acquired via a 3D laser scanner and the solid models of the shoulder bones have been reconstructed through CT images. Loads on the shoulder joint have been estimated using anatomical models database. A new virtual/numerical procedure has been implemented using a 3D parametric modelling software to find the optimal position of the glenosphere. Results Several analyses have been performed using different configurations obtained by changing the glenoid component tilt and the lateral position of the glenosphere, modified through the insertion of a cylindrical spacer. For the analysed case study, it was found that the interposition of a spacer (between the baseplate and the glenoid) and 15° inferior tilt of the glenosphere allow improving the range of motion and the stability of the shoulder. Conclusions Some common complications of the reverse shoulder arthroplasty could be effectively reduced by a suitable positioning of the prosthesis components. In this work, using a new method based on virtual simulations, the influence of the glenosphere positioning has been investigated. An optimal configuration for the analysed case study has been found. The proposed approach could be used to find, with no in vivo experiments, the optimal position of a reverse shoulder prosthesis depending on the different dimensions and shape of the bones of each patient.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2019-01-01 | Injury |