Influence of joint kinematics on polyethylene wear in anatomic shoulder joint arthroplasty

• Verfasst von: Braun, Steffen [VerfasserIn]
• Verfasst von: Schröder, Stefan [VerfasserIn]
• Verfasst von: Müller, Ulrike [VerfasserIn]
• Verfasst von: Sonntag, Robert [VerfasserIn]
• Verfasst von: Bülhoff, Matthias [VerfasserIn]
• Verfasst von: Kretzer, Jan Philippe [VerfasserIn]
• Titel: Influence of joint kinematics on polyethylene wear in anatomic shoulder joint arthroplasty
• Verf.angabe: Steffen Braun, Stefan Schroeder, Ulrike Mueller, Robert Sonntag, Matthias Buelhoff, Jan Philippe Kretzer
• E-Jahr: 2018
• Jahr: 23 April 2018
• Umfang: 7 S.
• Fussnoten: Gesehen am 06.08.2019
• Titel Quelle: Enthalten in: Journal of shoulder and elbow surgery
• Ort Quelle: St. Louis, Mo. : Mosby, 1992
• Jahr Quelle: 2018
• Band/Heft Quelle: 27(2018), 9, Seite 1679-1685
• ISSN Quelle: 1532-6500
• DOI: doi:10.1016/j.jse.2018.02.063
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Anatomic total shoulder arthroplasty
• Sach-SW: cross-shear
• Sach-SW: joint kinematic
• Sach-SW: rotator cuff
• Sach-SW: superimposed motion
• Sach-SW: wear rate
• K10plus-PPN: 1670634310

Abstract

Background - Despite the positive results in total shoulder arthroplasties (TSAs), a higher revision rate is documented compared with total hip and knee replacements. Wear is the possible main cause of TSA failure in the long-term. This study investigated the effect of joint kinematics and the influence of the rotator cuff on the polyethylene wear performance in an anatomic TSA. - Methods - Lifting a load of 2 kg with an abduction/adduction of 0° to 90° was simulated for 2 × 106 cycles as a primary motion using a fully kinematic joint simulator. A combined rotation in anteversion-retroversion of ±5° and ±10° was also simulated. The force in the superior-inferior direction and the axial joint compression were applied under force control based on in vivo data of the shoulder. A soft tissue restraint model was used to simulate an intact and an insufficient rotator cuff. - Results - The highest wear rate in the intact rotator cuff group was 58.90 ± 1.20 mg/106 cycles with a combined rotation of ±10°. When an insufficient rotator cuff was simulated, the highest polyethylene wear rate determined was 79.67 ± 4.18 mg/106 cycles. - Conclusions - This study confirms a high dependency of the polyethylene wear behavior and dimension on the joint kinematics in total shoulder replacement. This can be explained by an increasing cross-shear stress on the polyethylene component. The results obtained indicate that additional combined kinematics are an indispensable part of wear tests on anatomic shoulder replacements.