Retaining or excising the supraspinatus tendon in complex proximal humeral fractures treated with reverse prosthesis: a biomechanical analysis in two different designs

Autor: Fernando Santana, E. Palau, Carlos Torrens, Joan Miquel, Manuel Vinagre, Alicia Casals, Klaus Langohr
Přispěvatelé: Universitat Politècnica de Catalunya. Departament d'Enginyeria de Sistemes, Automàtica i Informàtica Industrial, Universitat Politècnica de Catalunya. GRINS - Grup de Recerca en Robòtica Intel·ligent i Sistemes
Rok vydání: 2018
Předmět:
medicine.medical_specialty
medicine.medical_treatment
Shoulder joint
Complex proximal humeral fractures
Arthroplasty
Prosthesis Implantation
Tendons
03 medical and health sciences
Rotator Cuff
0302 clinical medicine
medicine
Cadaver
Humans
Orthopedics and Sports Medicine
Displacement (orthopedic surgery)
Rotator cuff
Lesser Tuberosity
Artroplàstia
Aged
Orthodontics
030222 orthopedics
Supraspinatus
business.industry
Shoulder Joint
Enginyeria biomèdica [Àrees temàtiques de la UPC]
Shoulder Prosthesis
030229 sport sciences
General Medicine
Humerus
Middle Aged
musculoskeletal system
Rotator cuff excision
Cadaveric study
Tendon
Biomechanical Phenomena
Tuberosity reconstruction
medicine.anatomical_structure
Reverse shoulder arthroplasty
Articulació escapulohumeral
Arthroplasty
Replacement
Shoulder
Orthopedic surgery
Shoulder Fractures
Surgery
Cadaveric spasm
business
Greater Tuberosity
Zdroj: Recercat. Dipósit de la Recerca de Catalunya
instname
UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
ISSN: 1434-3916
Popis: Purpose: We aimed to biomechanically evaluate the effect of the supraspinatus tendon on tuberosity stability using two different reverse shoulder arthroplasty (RSA) models for complex proximal humeral fractures (PHFs) Methods: Four-part proximal humeral fractures were simulated in 20 cadaveric shoulders. Two different RSA designs were implemented: a glenosphere-medialized model and a glenosphere-lateralized model. Tuberosities were reconstructed, and displacement of bony fragments was measured (mm) by placing three sensors: in the humeral diaphysis (D), in the greater tuberosity (GT), and in the lesser tuberosity (LT). Axial forces were induced and measured in Newton (N). The test was performed twice in each specimen, with and without the supraspinatus tendon. The regression line (RL) was measured in mm/N. Results: In the medialized model, the GT–D displacement was greater in the supraspinatus preserving model than that in the tendon excision model (p
Databáze: OpenAIRE
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