Total Shoulder Arthroplasty
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2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Yining Lu ◽  
Matthew R. Cohn ◽  
James Baker ◽  
Grant Garrigues ◽  
Gregory Nicholson ◽  
...  

2021 ◽  
Vol Publish Ahead of Print ◽  
Author(s):  
Tyler E. Calkins ◽  
Zachary A. Mosher ◽  
Thomas W. Throckmorton ◽  
Tyler J. Brolin

2021 ◽  
Vol 10 (19) ◽  
pp. 4600
Author(s):  
Philipp A. Michel ◽  
J. Christoph Katthagen ◽  
Benedikt Schliemann ◽  
Sina Wilkens ◽  
Andre Frank ◽  
...  

Reverse shoulder arthroplasty (RSA) is a commonly performed salvage procedure for failed proximal humeral fracture fixation. The rate of intraoperative periprosthetic fractures is higher compared to primary RSA. The goal of this study was to investigate the biomechanical value of a protective cerclage during stem impaction in a revision surgery setting. Twenty-eight fresh-frozen human humeri were used to assess different configurations for steel wire and FiberTape cerclages. A custom-built biomechanical test setup simulated the mallet strikes during the stem impaction process with the Univers Revers prothesis stem. The mallet energy until the occurrence of a first crack was not different between groups. The total energy until progression of the fracture distally to the cerclage was significantly higher in the cerclage groups compared to the native humerus (9.5 J vs. 3.5 J, respectively; p = 0.0125). There was no difference between the steel wire and FiberTape groups (11.4 J vs. 8.6 J, respectively; p = 0.2695). All fractures were located at the concave side of the stem at the metaphyseal calcar region. This study demonstrates that a protective cerclage can successfully delay the occurrence of a fracture during stem impaction in reverse shoulder arthroplasty. A FiberTape cerclage is biomechanically equally efficient compared to a steel wire cerclage.


2021 ◽  
Author(s):  
Tomas Smith ◽  
Alexander Ellwein ◽  
Roman Karkosch ◽  
Spiros Tsamassiotis ◽  
Hauke Horstmann ◽  
...  

Abstract Background: Anatomic total shoulder arthroplasty (TSA) has been continuously developed and current designs include stemless or canal-sparing humeral components. In the literature stemless and canal sparing TSA showed good clinical and radiographic results, which were comparable to stemmed TSA. The aim of this study was to determine the short-term clinical and radiological outcomes of a new stemless TSA design. Methods: A prospective multicentre study including 154 total shoulder arthroplasty patients with a follow up of 12 months was performed. At the time of follow up 129 patients were available for review. The adjusted Constant Murley score [33], Oxford shoulder score, EQ-5D-5L score and radiographs were examined preoperatively, 3 and 12 months after the implantation of the new stemless TSA implant GLOBAL ICON™ (DePuy Synthes, Warsaw, IN, USA). Complications were documented.Results: Implant Kaplan-Meier survivorship was 98.7% at 12 months. From baseline to 12 months follow-up, all scores showed a progressive significant mean improvement. The mean adjusted Constant score increased from 42.3 to 96.1 points (p<0.001). The Oxford shoulder score showed an increase of 21.6 points (p<0.001). The postoperative radiographs showed no continuous radiolucent lines, subsidence, aseptic loosening or progressive radiolucency, but one osteolytic lesion was observed. Only 2 prostheses were revised. Conclusion: The new GLOBAL ICON stemless TSA showed good clinical and radiographic results at short-term follow up which were comparable to early results of other stemless TSA. Further studies with longer follow up are needed in the future.


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