{"id":{"repo_id":"buffalo","oai_identifier":"oai:ubir.buffalo.edu:10477/84043"},"canonical_url":"https://search.dev.ndltd.org/etd/buffalo/oai:ubir.buffalo.edu:10477/84043","repository":{"repo_id":"buffalo","name":"Buffalo","base_url":"https://ubir.buffalo.edu/oai/request"},"display":{"title":"Biomechanical Evaluation of Glenoid Baseplate Stability in Total Shoulder Arthroplasty","abstract":"Ph.D.","abstract_html":"Ph.D.","abstract_has_math":false,"creators":["Martin, Elise; 0000-0002-6069-2868"],"institution":"State University of New York at Buffalo","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Ehrensberger, Mark","Biomedical Engineering"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2022,"date_issued":"2022-06-21T15:47:20Z","date_published":"2022-06-21T15:47:20Z","updated_at":"2026-07-27T19:05:30Z","subjects":["biomechanics"],"languages":["eng"],"rights":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."],"rights_urls":[],"identifier_entries":[]},"links":{"outbound_url":"http://hdl.handle.net/10477/84043","outbound_label":"Handle","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Ehrensberger, Mark","Biomedical Engineering"]},{"key":"dc:creator","label":"Author","values":["Martin, Elise; 0000-0002-6069-2868"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date","label":"Dc Date","values":["2022-06-21T15:47:20Z","2020"]},{"key":"dc:publisher","label":"Institution","values":["State University of New York at Buffalo"]},{"key":"dc:type","label":"Dc Type","values":["Text","Dissertation"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["biomechanics"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["eng"]},{"key":"dc:rights","label":"Dc Rights","values":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["http://hdl.handle.net/10477/84043"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["Ph.D.","Total shoulder arthroplasty is a continuously developing and improving technology that has become much more widely used for the treatment of pain and restricted mobility within the shoulder. Even in modern designs of shoulder arthroplasty, loosening of the glenoid component is a continuing challenge. Glenoid baseplate loosening is sometimes difficult to assess clinically and is typically only assessed following discomfort or total failure of the implant. Therefore, it is important that accurate and thorough mechanical testing be performed regarding glenoid baseplates in order to analyze stability and the potential for long-term fixation under different conditions prior to implantation in patients. The focus of this dissertation is regarding mechanical testing and the development of new mechanical testing methods for both anatomic and reverse total shoulder glenoid baseplates. The first series of experimentation in this work examine reverse total shoulder arthroplasty (RSA). This type of replacement is commonly used in the case of rotator cuff deficiency, which is often associated with superior glenoid defect. A series of different sized augmented baseplates were analyzed to determine their effectiveness in the presence of different sized superior defects. It was determined that the augmented baseplates are able to restore some stability to the construct but do not fully restore stability to that of a construct with no defect. Additionally, the impact of locking and nonlocking peripheral screws was examined; it was determined that peripheral screw type has little impact on the stability of this particular implant. Finally, a complex rotary apparatus was developed to apply complex loading patterns to a RSA implant. This system is able to mimic the requirements put in place by ASTM F2028-17, while also allowing for the collection of much more accurate displacement data continuously using a 3D digital image correlation system.In addition to the work concerning RSA, a new testing and analysis technique was developed for anatomic total shoulder arthroplasty (TSA). The primary focus of this work looked to quantify displacements of metal backed and hybrid glenoid baseplates. These types of baseplates, which are constructed using a combination of metal and polyethylene components, are designed to osseointegrate with the surrounding bone and therefore maintain good long-term fixation. Because of this reliance on osseointegration, it is particularly important to examine baseplate displacements to ensure that implant design will minimize micromotion and promote proper osseointegration. Several techniques were examined to collect measurements from both the visible edges and the embedded stem tip in both types of implants. Through the development of new measuring techniques utilizing a 3D digital image correlation system in conjunction with new testing components, the collection of relevant baseplate displacement values is possible. Ultimately, this dissertation is able to detail several new mechanical testing techniques that can successfully analyze glenoid baseplate stability in total shoulder arthroplasty.","**To request an accessible version of the file(s) associated with this item, contact library@buffalo.edu. Please include the item's persistent URL [http://hdl.handle.net/. . .] in your request.**"]},{"key":"dc:format","label":"Dc Format","values":["application/pdf"]},{"key":"dc:title","label":"Title","values":["Biomechanical Evaluation of Glenoid Baseplate Stability in Total Shoulder Arthroplasty"]}]}],"canonical_facts":{"dc:contributor":["Ehrensberger, Mark","Biomedical Engineering"],"dc:creator":["Martin, Elise; 0000-0002-6069-2868"],"dc:date":["2022-06-21T15:47:20Z","2020"],"dc:description":["Ph.D.","Total shoulder arthroplasty is a continuously developing and improving technology that has become much more widely used for the treatment of pain and restricted mobility within the shoulder. Even in modern designs of shoulder arthroplasty, loosening of the glenoid component is a continuing challenge. Glenoid baseplate loosening is sometimes difficult to assess clinically and is typically only assessed following discomfort or total failure of the implant. Therefore, it is important that accurate and thorough mechanical testing be performed regarding glenoid baseplates in order to analyze stability and the potential for long-term fixation under different conditions prior to implantation in patients. The focus of this dissertation is regarding mechanical testing and the development of new mechanical testing methods for both anatomic and reverse total shoulder glenoid baseplates. The first series of experimentation in this work examine reverse total shoulder arthroplasty (RSA). This type of replacement is commonly used in the case of rotator cuff deficiency, which is often associated with superior glenoid defect. A series of different sized augmented baseplates were analyzed to determine their effectiveness in the presence of different sized superior defects. It was determined that the augmented baseplates are able to restore some stability to the construct but do not fully restore stability to that of a construct with no defect. Additionally, the impact of locking and nonlocking peripheral screws was examined; it was determined that peripheral screw type has little impact on the stability of this particular implant. Finally, a complex rotary apparatus was developed to apply complex loading patterns to a RSA implant. This system is able to mimic the requirements put in place by ASTM F2028-17, while also allowing for the collection of much more accurate displacement data continuously using a 3D digital image correlation system.In addition to the work concerning RSA, a new testing and analysis technique was developed for anatomic total shoulder arthroplasty (TSA). The primary focus of this work looked to quantify displacements of metal backed and hybrid glenoid baseplates. These types of baseplates, which are constructed using a combination of metal and polyethylene components, are designed to osseointegrate with the surrounding bone and therefore maintain good long-term fixation. Because of this reliance on osseointegration, it is particularly important to examine baseplate displacements to ensure that implant design will minimize micromotion and promote proper osseointegration. Several techniques were examined to collect measurements from both the visible edges and the embedded stem tip in both types of implants. Through the development of new measuring techniques utilizing a 3D digital image correlation system in conjunction with new testing components, the collection of relevant baseplate displacement values is possible. Ultimately, this dissertation is able to detail several new mechanical testing techniques that can successfully analyze glenoid baseplate stability in total shoulder arthroplasty.","**To request an accessible version of the file(s) associated with this item, contact library@buffalo.edu. Please include the item's persistent URL [http://hdl.handle.net/. . .] in your request.**"],"dc:format":["application/pdf"],"dc:identifier":["http://hdl.handle.net/10477/84043"],"dc:language":["eng"],"dc:publisher":["State University of New York at Buffalo"],"dc:rights":["Users of works found in University at Buffalo Institutional Repository (UBIR) are responsible for identifying and contacting the copyright owner for permission to reuse. University at Buffalo Libraries do not manage rights for copyright-protected works and cannot assist with permissions.","Copyright retained by author."],"dc:subject":["biomechanics"],"dc:title":["Biomechanical Evaluation of Glenoid Baseplate Stability in Total Shoulder Arthroplasty"],"dc:type":["Text","Dissertation"]},"updated_at":"2026-07-27T19:05:30Z"}