{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,11]],"date-time":"2026-02-11T13:41:26Z","timestamp":1770817286166,"version":"3.50.1"},"reference-count":31,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,2,11]],"date-time":"2026-02-11T00:00:00Z","timestamp":1770768000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Vet. Sci."],"abstract":"<jats:sec>\n                    <jats:title>Introduction<\/jats:title>\n                    <jats:p>While dimensional accuracy and surface characteristics of human orthopedic implants are extensively regulated and studied, comparable evaluations of veterinary orthopedic implants are limited. This study aimed to assess the dimensional conformity and surface finish of commercially available veterinary cortical bone screws relative to established engineering standards.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Seventy-three commercially available 2.0 mm veterinary cortical bone screws from five anonymized manufacturers were analyzed using high-magnification optical microscopy. Dimensional parameters assessed included screw length, major diameter, minor diameter, thread pitch, and combined thread angle (\u03b1\u202f+\u202f\u03b2). Measurements were calibrated using a certified micrometer scale. Dimensional conformity was evaluated using a unilateral tolerance framework based on ISO 5835 low-quality limits. Surface finish was assessed using a semi-quantitative grading system under standardized magnification.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>Most screws exhibited dimensional deviations outside the defined tolerance limits. Eighty percent of screws were outside tolerance for length, 78% for major diameter, 77% for minor diameter, 98.6% for pitch, and 60% for combined thread angle. Surface finish was classified as unacceptable in 40% of screws. Tolerance deviations were observed across all manufacturers, with no single manufacturer accounting for the majority of non-conforming screws.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Discussion<\/jats:title>\n                    <jats:p>The findings demonstrate substantial dimensional variability and surface defects in commercially available veterinary cortical bone screws. These deviations may adversely affect screw biomechanics and the bone\u2013implant interface, indicating suboptimal manufacturing quality. The absence of regulatory oversight for veterinary implants highlights the need for improved quality control standards to ensure consistent and reliable implant performance.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.3389\/fvets.2026.1723402","type":"journal-article","created":{"date-parts":[[2026,2,11]],"date-time":"2026-02-11T05:44:24Z","timestamp":1770788664000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Tolerance and surface analysis of veterinary bone screws"],"prefix":"10.3389","volume":"13","author":[{"given":"William T.","family":"McCartney","sequence":"first","affiliation":[{"name":"NOAH","place":["Dublin, Ireland"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Ciprian","family":"Ober","sequence":"additional","affiliation":[{"name":"Department of Surgery and Intensive Care, Faculty of Veterinary Medicine, University of Agricultural Sciences and Veterinary Medicine","place":["Cluj-Napoca, Romania"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Bryan J.","family":"Mac Donald","sequence":"additional","affiliation":[{"name":"School of Mechanical and Manufacturing Engineering, Dublin City University","place":["Dublin, Ireland"]}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Christos","family":"Yiapanis","sequence":"additional","affiliation":[{"name":"School of Veterinary Medicine, University of Nicosia","place":["Egkomi, Cyprus"]}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1965","published-online":{"date-parts":[[2026,2,11]]},"reference":[{"key":"ref1","volume-title":"ASTM F86 standard practice for surface preparation and marking of metallic surgical implants","year":"2013"},{"key":"ref2","volume-title":"ASTM A380 standard practice for cleaning, descaling, and passivation of stainless steel parts, equipment, and systems","year":"2017"},{"key":"ref3","volume-title":"ASTM A967 standard specification for chemical passivation treatments for stainless steel parts","year":"2017"},{"key":"ref4","volume-title":"ISO 6475: Implants for surgery \u2013 metal bone screws with asymmetrical 60\u00b0 thread and spherical under-surface \u2013 mechanical requirements and test methods","year":"1989"},{"key":"ref5","volume-title":"ISO 9585: Implants for surgery \u2013 determination of bending strength and stiffness of bone plates","year":"1990"},{"key":"ref6","volume-title":"ISO 5835: Implants for surgery \u2013 metal bone screws with hexagonal drive connection, spherical under-surface of head, asymmetrical thread dimensions","year":"2018"},{"key":"ref7","volume-title":"International Organization for Standardization (ISO). 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