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Reverse shoulder prothesis

Jian Zhang, Qiang Huang
OBJECTIVE: To investigate clinical results of reverse total shoulder arthroplasty in treating comminuted fracture of proximal humerus in elderly patients with rotator cuff injury. METHODS: From January 2017 to December 12, 12 comminuted fracture or dislocation of proximal humerus elderly patients were diagnosed as rotator cuff injury by preoperative MRI and operative exploration, and treated by reverse total shoulder arthroplasty. Among them, including 7 males and 5 females aged from 65 to 86 years old; 5 patients injured on the left side and 7 patients injured on the right side...
January 25, 2019: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
Jillian M Kazley, Keegan P Cole, Khusboo J Desai, Samuel Zonshayn, Andrew S Morse, Samik Banerjee
Historically, patients with rotator cuff arthropathy had limited reconstructive options. The early generations of reverse total shoulder arthroplasty (rTSA) designs had increased failure rates due to loosening of glenoid baseplates secondary to excessive torques. In 1985, Paul Grammont introduced a prosthetic design changing the center of rotation that addressed this major complication. The Grammont principles remain the foundation of modern reverse total shoulder prostheses, although the original design has undergone several adaptations...
February 2019: Expert Review of Medical Devices
M Oztürk, G Cunningham, N Holzer, P Hoffmeyer
Evolution of shoulder arthroplasty has led to mainly three types of implants: hemiarthroplasty, total shoulder arthroplasty and reverse shoulder arthroplasty. There is yet no clear consensus about indications for the different existing types of prothesis. The aim of this article is therefore to bring together and clarify the indications found in the current literature. Hemiarthroplasty, historically the first widely used implant, has lost much ground to total shoulder arthroplasty, and keeps its place only for specific situations...
December 17, 2014: Revue Médicale Suisse
Caroline Chebli, Philippe Huber, Jonathan Watling, Alexander Bertelsen, Ryan T Bicknell, Frederick Matsen
The semiconstrained design of the reverse arthroplasty allows loads from the humerus to challenge the fixation of the glenoid component to the scapula. We examined some of the factors affecting the quality of glenoid screw fixation, including the density of the material into which the screws are placed, the purchase of individual screws, and the direction of loading in relation to screw placement. Loads were applied by the humeral component to glenoid components with different conditions of fixation. The load to failure for each set of conditions was measured and compared statistically...
March 2008: Journal of Shoulder and Elbow Surgery
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