Replacement options for the B2 glenoid in osteoarthritis of the shoulder

• Verfasst von: Sowa, Boris [VerfasserIn]
• Verfasst von: Bochenek, Martin [VerfasserIn]
• Verfasst von: Braun, Steffen [VerfasserIn]
• Verfasst von: Zeifang, Felix [VerfasserIn]
• Verfasst von: Kretzer, Jan Philippe [VerfasserIn]
• Verfasst von: Bruckner, Thomas [VerfasserIn]
• Verfasst von: Walch, Gilles [VerfasserIn]
• Verfasst von: Raiss, Patric [VerfasserIn]
• Titel: Replacement options for the B2 glenoid in osteoarthritis of the shoulder
• Titelzusatz: a biomechanical study
• Verf.angabe: Boris Sowa, Martin Bochenek, Steffen Braun, Felix Zeifang, Jan Philippe Kretzer, Thomas Bruckner, Gilles Walch & Patric Raiss
• E-Jahr: 2018
• Jahr: 07 March 2018
• Umfang: 9 S.
• Fussnoten: Gesehen am 01.04.2020
• Titel Quelle: Enthalten in: Archives of orthopaedic and trauma surgery
• Ort Quelle: Berlin : Springer, 1903
• Jahr Quelle: 2018
• Band/Heft Quelle: 138(2018), 7, Seite 891-899
• ISSN Quelle: 1434-3916
• DOI: doi:10.1007/s00402-018-2915-z
• Datenträger: Online-Ressource
• Sprache: eng
• Sach-SW: Arthroplasty, Replacement, Shoulder
• Sach-SW: B2
• Sach-SW: Biomechanical Phenomena
• Sach-SW: Glenoid
• Sach-SW: Glenoid Cavity
• Sach-SW: Humans
• Sach-SW: Joint Dislocations
• Sach-SW: Osteoarthritis
• Sach-SW: Postoperative Complications
• Sach-SW: Retroversion
• Sach-SW: Shoulder Joint
• Sach-SW: TSA
• K10plus-PPN: 1693703270

Abstract

Background: Glenoid replacement in cases of severe glenoid retroversion (RV) or eccentric wear is challenging. The aim of this study was to evaluate different treatment methods under standardized conditions to assist surgeons in the decision-making process. - METHODS: Three treatment options for severe glenoid RV (15°) were compared: (1) no RV correction; (2) complete RV correction; (3) no RV correction and implantation of a posterior augmented glenoid (PAG). A highly standardized implantation protocol using artificial glenoid bones (five per group) was chosen, and a physiologic shoulder movement was applied in a biomechanical setting. Micromotions (MM) between glenoid components and bone were quantified using an optical 3D measuring system. - RESULTS: In the uncorrected retroversion group, three instances of subluxation of the prosthetic head occurred between 2000 and 4000 cycles. At 2000 cycles, significantly more MM were observed in the uncorrected RV group than in the corrected RV group (p < 0.0001) or to the augmented group (p < 0.0001). At 10|000 cycles, more MM were observed in the posterior augmented group than in the corrected RV group (p < 0.0001). - CONCLUSION: If sufficient bone stock is available, retroversion correction should be favored. Posterior augmented glenoids seem to be a suitable treatment option if complete correction of the retroversion is not possible without compromising the glenoid vault. Without correction of the retroversion, high failure rates were observed.