Search results for " Stability ratio"

showing 2 items of 2 documents

Numerical study of the components positioning influence on the stability of a reverse shoulder prosthesis

2014

Aim of this paper is to setup a novel procedure able to analyze performances of a reverse shoulder prosthesis when different geometrical configurations are assumed. Nowadays, such a prosthesis is widely used but, because of its novelty, data in literature give poor information about performances and limits to its applicability. The activity has been divided into the following steps. At the beginning the shape of the prosthesis has been digitally acquired via a 3D scanner. Then, CAD models of all prosthetic components have been geometrically optimized in a way to obtain final entities suitable for numerical simulations. After that, CAD assemblies have been created between prosthetic componen…

ScannerEngineeringEngineering drawingbusiness.industryCADStructural engineeringStability (probability)Industrial and Manufacturing EngineeringFinite element methodStability conditionsmedicine.anatomical_structureScapulaModeling and SimulationmedicineNon linear FEM analyses · 3D scanner acquisition · Reversed shoulder prosthesis · Shoulder stability ratioHumerusShoulder jointNon linear FEM analyses 3D scanner acquisition Reversed shoulder prosthesis Shoulder stability ratiobusinessSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria Industriale
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Optimal positioning of the humeral component in the reverse shoulder prosthesis.

2014

Total reverse shoulder arthroplasty is becoming more and more the standard therapeutic practice for glenohumeral arthropathy with massive lesions of the rotator cuff. The biomechanical principle of this prosthesis is represented by the reversion of the normal anatomy of the shoulder joint. This non-anatomical prosthesis leads to a medialization of the rotation centre of the glenohumeral joint and also to a distalization of the humeral head. All that causes a deltoid tension increasing so allowing a larger abduction of the arm. Main complications of the reverse shoulder prosthesis are due to the joint instability, the scapular notching and the wear of the polyethylene insert. The main goal o…

musculoskeletal diseasesmedicine.medical_specialtyFEM analysesmedicine.medical_treatmentReplacementDeltoid curveProsthesis DesignProsthesisArthroplastyArthropathymedicineHumansOrthopedics and Sports MedicineHumerusRotator cuffArthroplasty ReplacementSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria IndustrialeTotal reverse shoulder arthroplasty Intrinsic stability FEM analyses Polyethylene wear Stability ratioFEM analyses; Intrinsic stability; Polyethylene wear; Stability ratio; Total reverse shoulder arthroplasty; Arthroplasty Replacement; Humans; Humerus; Prosthesis Design; Shoulder Joint; Orthopedics and Sports Medicine; Surgery; Medicine (all)business.industryShoulder JointMedicine (all)Intrinsic stabilityHumerusShoulder Prosthesismedicine.diseaseArthroplastySurgerymedicine.anatomical_structurePolyethylene wearStability ratioTotal reverse shoulder arthroplastySurgeryShoulder jointbusinesshuman activitiesMusculoskeletal surgery
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