Search results for " Orthopedic"

showing 5 items of 325 documents

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
researchProduct

Two different posterior-stabilized mobile-bearing TKA designs: navigator evaluation of intraoperative kinematic differences

2020

Purpose: The purpose of this study was to compare two types of posterior-stabilized (PS) mobile-bearing (MB) total knee arthroplasties (TKAs). The hypothesis was that no major differences were going to be found among the two TKA designs. Methods: Two cohorts of patients who were divided according to implant design (Cohort A, new design gradually reducing radius PS MB TKA; Cohort B, traditional dual-radius PS MB TKA) were analyzed by means of intraoperative navigation. All operations were guided by a non-image-based navigation system that recorded relative femoral and tibial positions in native and implanted knees during the following kinematic tests: passive range of motion (PROM), varus–va…

musculoskeletal diseasesmedicine.medical_specialtyKinematicsKnee Jointmedicine.medical_treatmentComparisonKinematicsPromProsthesis DesignProsthesis03 medical and health sciences0302 clinical medicinemedicineHumansOrthopedics and Sports MedicinePosterior-stabilized kneeRange of Motion ArticularSettore ING-IND/15 - Disegno E Metodi Dell'Ingegneria IndustrialeArthroplasty Replacement KneeOrthodontics030222 orthopedicsKnee laxitybusiness.industryTKAPosterior stabilized030229 sport sciencesKinematicmusculoskeletal systemNavigationBiomechanical PhenomenaSurgeryCohortOrthopedic surgerySurgeryMobile bearingKnee ProsthesisRange of motionbusinessMUSCULOSKELETAL SURGERY
researchProduct

Comparison of Postoperative Coronal Leg Alignment in Customized Individually Made and Conventional Total Knee Arthroplasty

2021

Neutral coronal leg alignment is known to be important for postoperative outcome in total knee arthroplasty (TKA). Customized individually made implants (CIM) instrumented with patient-specific cutting guides are an innovation aiming to increase the precision and reliability of implant positioning and reconstruction of leg alignment. We aimed to compare reconstruction of the hip–knee–ankle angle (HKA) of the novel CIM system iTotal™ CR G2 (ConforMIS Inc.) to a matched cohort of the off-the-shelf (OTS) knee replacement system Vanguard™ CR (Zimmer Biomet). Retrospective analysis of postoperative coronal full-leg weight-bearing radiographs of 562 TKA (283 CIM TKA, 279 OTS TKA) was conducted. V…

musculoskeletal diseasestotal knee arthroplastyleg alignmentRadiographymedicine.medical_treatmentTotal knee arthroplastyMedicine (miscellaneous)Knee replacementArticlepatient-specific instruments03 medical and health sciences0302 clinical medicineMedicinePostoperative outcomeOrthodontics030222 orthopedicsRotational errorbiologybusiness.industryR030229 sport sciencesmusculoskeletal systembiology.organism_classificationValguscustom-made implantCoronal planeMedicinerotational correctionImplantbusinessJournal of Personalized Medicine
researchProduct

Microsurgery and external fixation in orthoplastic reconstruction of tibial injuries.

2019

"Orthoplastics" is a relatively new approach to lower limb reconstruction, where an integration of both plastic and orthopedic expertise is required, together with the availability of well-equipped facilities. Acute shortening and long-term frames for lengthening are generally considered alternatives to length preservation and soft tissue microsurgical reconstruction, but an integration of external fixation and reconstructive microsurgery is gaining an increasing role with refinements of joint approaches.Data on sixteen patients who underwent microsurgical lower limb reconstruction and external fixation with an orthoplastic approach, following acute or chronic tibial injury, were retrospect…

orthoplastic reconstructionmedicine.medical_specialtyMicrosurgerySoft Tissue Injuriesmedicine.medical_treatment030230 surgerylower limb reconstructionSurgical Flaps03 medical and health sciencesExternal fixationFractures Open0302 clinical medicineexternal fixationRetrospective StudieFracture FixationFracture fixationmedicineReconstructive Surgical ProcedureHumansOrthopedics and Sports MedicineTibiaSurgical FlapsRetrospective Studies030222 orthopedicsTibiabusiness.industrySoft tissueMicrosurgeryPlastic Surgery Proceduresmedicine.diseaseSurgerySoft Tissue InjurieSurgical FlapTibial FracturesPseudarthrosisTreatment OutcomeOrthopedic surgerySurgerybusinessHumanHandchirurgie, Mikrochirurgie, plastische Chirurgie : Organ der Deutschsprachigen Arbeitsgemeinschaft fur Handchirurgie : Organ der Deutschsprachigen Arbeitsgemeinschaft fur Mikrochirurgie der Peripheren Nerven und Gefasse : Organ der V...
researchProduct

Recurrent lumbar disc herniation: Is there a correlation with the surgical technique? A multivariate analysis

2019

Purpose: The recurrence of a lumbar disc herniation (LDH) is a common cause of poor outcome following lumbar discectomy. The aim of this study was to assess a potential relationship between the incidence of recurrent LDH and the surgical technique used. Furthermore, we tried to define the best surgical technique for the treatment of recurrent LDH to limit subsequent recurrences. Materials and Methods: A retrospective study was conducted on 979 consecutive patients treated for LDH. A multivariate analysis tried to identify a possible correlation between (1) the surgical technique used to treat the primary LDH and its recurrence; (2) technique used to treat the recurrence of LDH and the secon…

spinal degenerationmedicine.medical_specialtylcsh:Diseases of the musculoskeletal systemMultivariate analysismedicine.medical_treatmentDegenerative disc diseaseCorrelationsurgery03 medical and health sciences0302 clinical medicineDiscectomyMedicinerecurrent lumbar disc herniationDegenerative disc diseaselow back pain030222 orthopedicsbusiness.industrySettore MED/27 - NeurochirurgiaIncidence (epidemiology)Retrospective cohort studymedicine.diseaseLow back painSurgeryspinal instabilityOriginal ArticleNeurology (clinical)Lumbar disc herniationlcsh:RC925-935medicine.symptombusiness030217 neurology & neurosurgery
researchProduct