{"id":{"repo_id":"vt","oai_identifier":"oai:vtechworks.lib.vt.edu:10919/116111"},"canonical_url":"https://search.dev.ndltd.org/etd/vt/oai:vtechworks.lib.vt.edu:10919/116111","repository":{"repo_id":"vt","name":"Virginia Tech","base_url":"https://vtechworks.lib.vt.edu/oai/request"},"display":{"title":"The Chondroid Conundrum: Transpharyngeal Removal of Guttural Pouch Chondroids in Horses","abstract":"Strangles is an extremely infectious disease of horses that has negative financial and health consequences. After infection, some horses form balls of concrete-like pus in a structure in an air-filled sac of the ear canal called guttural pouches (GPs). These concretions, called chondroids, allow affected horses to continue to pass on infection to other horses. Removal of chondroids is needed to stop disease transmission but current non-surgical and surgical removal techniques have limitations. Surgical laser passed through an endoscope (medical camera) allows minimally invasive surgery of the guttural pouches. We performed laser surgery on cadaver horse heads to create access to the GP, then evaluated our ability to remove chondroid-like beads from the GP using a custom-made 3D-printed instrument. Our results showed efficient and complete removal of the beads compared to lavage without the 3D-printed instrument, with little damage to the heads. These findings are an initial step to development of a new chondroid-removal technique and may allow surgeons to more efficiently remove chondroids without the need for invasive surgery.","abstract_html":"Strangles is an extremely infectious disease of horses that has negative financial and health consequences. After infection, some horses form balls of concrete-like pus in a structure in an air-filled sac of the ear canal called guttural pouches (GPs). These concretions, called chondroids, allow affected horses to continue to pass on infection to other horses. Removal of chondroids is needed to stop disease transmission but current non-surgical and surgical removal techniques have limitations. Surgical laser passed through an endoscope (medical camera) allows minimally invasive surgery of the guttural pouches. We performed laser surgery on cadaver horse heads to create access to the GP, then evaluated our ability to remove chondroid-like beads from the GP using a custom-made 3D-printed instrument. Our results showed efficient and complete removal of the beads compared to lavage without the 3D-printed instrument, with little damage to the heads. These findings are an initial step to development of a new chondroid-removal technique and may allow surgeons to more efficiently remove chondroids without the need for invasive surgery.","abstract_has_math":false,"creators":["Cardona, Guillermo Andres"],"institution":"Virginia Tech","degree_name":"Master of Science","degree_level":"masters","degree_discipline":"Biomedical and Veterinary Sciences","degree_department":"Biomedical and Veterinary Sciences","school":null,"contributors":[],"advisors":[],"committee_chairs":["Bogers, Sophie Helen"],"committee_members":["Byron, Christopher R.","Dahlgren, Linda A.","McKenzie, Harold C."],"year":2023,"date_issued":"2023-08-18","date_published":"2023-08-18","updated_at":"2026-07-22T22:19:10Z","subjects":["Guttural pouch","chondroids","laser surgery","upper airway surgery","Streptococcus equi"],"languages":["en"],"rights":["In Copyright"],"rights_urls":["http://rightsstatements.org/vocab/InC/1.0/"],"identifier_entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["vt_gsexam:38288"],"render_values":[{"text":"vt_gsexam:38288","href":null,"code":true}]}]},"links":{"outbound_url":"http://hdl.handle.net/10919/116111","outbound_label":"Handle","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.committeechair","label":"Committee Chair","values":["Bogers, Sophie Helen"]},{"key":"dc:contributor.committeemember","label":"Committee Member","values":["Byron, Christopher R.","Dahlgren, Linda A.","McKenzie, Harold C."]},{"key":"dc:contributor.department","label":"Department","values":["Biomedical and Veterinary Sciences"]},{"key":"dc:creator","label":"Author","values":["Cardona, Guillermo Andres"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2023-08-25T08:00:45Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2023-08-25T08:00:45Z"]},{"key":"dc:date.issued","label":"Date","values":["2023-08-18"]},{"key":"dc:publisher","label":"Institution","values":["Virginia Tech"]},{"key":"dc:type","label":"Dc Type","values":["Thesis"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Biomedical and Veterinary Sciences"]},{"key":"thesis:degree_level","label":"Degree Level","values":["masters"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science"]},{"key":"thesis:institution_name","label":"Thesis Institution Name","values":["Virginia Polytechnic Institute and State University"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["Guttural pouch","chondroids","laser surgery","upper airway surgery","Streptococcus equi"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en"]},{"key":"dc:rights","label":"Dc Rights","values":["In Copyright"]},{"key":"dc:rights.uri","label":"Rights URI","values":["http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.other","label":"Dc Identifier Other","values":["vt_gsexam:38288"]},{"key":"dc:identifier.uri","label":"Identifier URI","values":["http://hdl.handle.net/10919/116111"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstractgeneral","label":"General Abstract","values":["Strangles is an extremely infectious disease of horses that has negative financial and health consequences. After infection, some horses form balls of concrete-like pus in a structure in an air-filled sac of the ear canal called guttural pouches (GPs). These concretions, called chondroids, allow affected horses to continue to pass on infection to other horses. Removal of chondroids is needed to stop disease transmission but current non-surgical and surgical removal techniques have limitations. Surgical laser passed through an endoscope (medical camera) allows minimally invasive surgery of the guttural pouches. We performed laser surgery on cadaver horse heads to create access to the GP, then evaluated our ability to remove chondroid-like beads from the GP using a custom-made 3D-printed instrument. Our results showed efficient and complete removal of the beads compared to lavage without the 3D-printed instrument, with little damage to the heads. These findings are an initial step to development of a new chondroid-removal technique and may allow surgeons to more efficiently remove chondroids without the need for invasive surgery."]},{"key":"dc:description.degree","label":"Dc Description Degree","values":["Master of Science"]},{"key":"dc:format.medium","label":"Dc Format Medium","values":["ETD"]},{"key":"dc:title","label":"Title","values":["The Chondroid Conundrum: Transpharyngeal Removal of Guttural Pouch Chondroids in Horses"]}]}],"canonical_facts":{"dc:contributor.committeechair":["Bogers, Sophie Helen"],"dc:contributor.committeemember":["Byron, Christopher R.","Dahlgren, Linda A.","McKenzie, Harold C."],"dc:contributor.department":["Biomedical and Veterinary Sciences"],"dc:creator":["Cardona, Guillermo Andres"],"dc:date.accessioned":["2023-08-25T08:00:45Z"],"dc:date.available":["2023-08-25T08:00:45Z"],"dc:date.issued":["2023-08-18"],"dc:description.abstractgeneral":["Strangles is an extremely infectious disease of horses that has negative financial and health consequences. After infection, some horses form balls of concrete-like pus in a structure in an air-filled sac of the ear canal called guttural pouches (GPs). These concretions, called chondroids, allow affected horses to continue to pass on infection to other horses. Removal of chondroids is needed to stop disease transmission but current non-surgical and surgical removal techniques have limitations. Surgical laser passed through an endoscope (medical camera) allows minimally invasive surgery of the guttural pouches. We performed laser surgery on cadaver horse heads to create access to the GP, then evaluated our ability to remove chondroid-like beads from the GP using a custom-made 3D-printed instrument. Our results showed efficient and complete removal of the beads compared to lavage without the 3D-printed instrument, with little damage to the heads. These findings are an initial step to development of a new chondroid-removal technique and may allow surgeons to more efficiently remove chondroids without the need for invasive surgery."],"dc:description.degree":["Master of Science"],"dc:format.medium":["ETD"],"dc:identifier.other":["vt_gsexam:38288"],"dc:identifier.uri":["http://hdl.handle.net/10919/116111"],"dc:language.iso":["en"],"dc:publisher":["Virginia Tech"],"dc:rights":["In Copyright"],"dc:rights.uri":["http://rightsstatements.org/vocab/InC/1.0/"],"dc:subject":["Guttural pouch","chondroids","laser surgery","upper airway surgery","Streptococcus equi"],"dc:title":["The Chondroid Conundrum: Transpharyngeal Removal of Guttural Pouch Chondroids in Horses"],"dc:type":["Thesis"],"thesis:degree_discipline":["Biomedical and Veterinary Sciences"],"thesis:degree_level":["masters"],"thesis:degree_name":["Master of Science"],"thesis:institution_name":["Virginia Polytechnic Institute and State University"]},"updated_at":"2026-07-22T22:19:10Z"}