Tomographic Analysis of Positioning of Reverse Baseplates Positioning.

Autor:	Almeida A; Orthopaedic Surgeon, Pompeia Hospital, Caxias do Sul, Brazil., Agostini DC; Radiologist Physician, General Hospital, Caxias do Sul, Brazil., Nesello PF; Orthopaedic Surgeon, Pompeia Hospital, Caxias do Sul, Brazil., de Almeida NC; Second Year Fellowship Resident at Pompeia Hospital, Caxias do Sul, Brazil., Mioso R; Radiologist Physician, General Hospital, Caxias do Sul, Brazil., Agostini AP; Orthopedic Surgeon, Saude Hospital, Caxias do Sul, Brazil.
Jazyk:	angličtina
Zdroj:	Journal of shoulder and elbow arthroplasty [J Shoulder Elb Arthroplast] 2021 Feb 15; Vol. 5, pp. 2471549220987714. Date of Electronic Publication: 2021 Feb 15 (Print Publication: 2021).
DOI:	10.1177/2471549220987714
Abstrakt:	Objective: To verify whether reverse baseplate positioning without the support of intraoperative three-dimensional technology is within the acceptable parameters in the literature and whether glenoid bone deformity (GBD) compromises this positioning. Methods: Sixty-nine reverse shoulder arthroplasties were evaluated with volumetric computed tomography (CT). Two radiologists performed blinded CT scan analysis and evaluated baseplate position within 2mm of the inferior glenoid; the inclination and version of the baseplate in relation to the Friedman line; and upper and lower screw and baseplate metallic peg end point positionings. The patients were divided according to the presence of GBD for statistical analyses. Results: The two radiologists concurred reasonably in their interpretations of the following analyzed parameters: baseplate position within 2mm of the inferior glenoid rim (97.1% and 95.7%), baseplate inclination (82.6% and 81.2%), baseplate version (69.6% and 56.5%), the upper screw reaching the base of the coracoid process (71% and 79.7%), the inferior screw remaining inside the scapula (88.4% and 84.1%), and the metallic peg of the baseplate considered intraosseous (88.4% and 72.5%). Conclusion: Reverse baseplate positioning without intraoperative three-dimensional technology is within the acceptable parameters of the literature, except for baseplate version and upper screw position. GBD did not interfere with baseplate positioning in reverse shoulder arthroplasty. Competing Interests: Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. (© The Author(s) 2021.)
Databáze:	MEDLINE
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