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Orthopedic examination findings, shoulder\u2010abduction\u2010angles (SAA; before\u2010 and during\u2010anesthesia), and ultrasonographic findings were recorded. Relationships between orthopedic and ultrasonographic abnormalities were compared.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Pain was elicited on 55\/128 shoulders; 73 shoulders were pain\u2010free. The most common painful structures included the biceps\u2010tendon (BT; 30%), triceps\u2010muscle (28%), and infraspinatus\u2010muscle (25%). SAA ranged between 25\u00b0 and 75\u00b0 among groups, including pain\u2010free shoulders in dogs without lameness. SAA was greater when dogs were anesthetized (46.3\u00b0\u2009\u00b1\u200914.0\u00b0 vs. 47.8\u00b0\u2009\u00b1\u200912.0\u00b0;<jats:italic>p<\/jats:italic>= .03), especially in SP (mean increase of 3.49\u00b0\u2009\u00b1\u20098.85\u00b0) compared to control (0.03\u00b0\u2009\u00b1\u20097.71\u00b0,<jats:italic>p<\/jats:italic>= .009). Overall, 103 ultrasonographic abnormalities were detected (SP: 44; control: 59). The most common ultrasonographic abnormality was fluid surrounding the biceps tendon, similarly distributed between groups (SP: 39\/44; control: 57\/59). Most chronic ultrasonographic abnormalities affected the BT (15\/103 abnormalities). No associations were detected between ultrasonographic abnormalities and clinical findings.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Shoulder abduction varied greatly and reached up to 75\u00b0 in normal joints. Ultrasonographic shoulder\u2010muscle abnormalities were common but did not seem associated with clinical findings.<\/jats:p><\/jats:sec><jats:sec><jats:title>Clinical significance<\/jats:title><jats:p>Interpretation of shoulder abduction warrants caution, and the presence of fluid around the BT may reflect a physiologic adaptation to racing, rather than a pathologic change in ultra\u2010endurance Alaskan sled\u2010dogs.<\/jats:p><\/jats:sec>","DOI":"10.1111\/vsu.13621","type":"journal-article","created":{"date-parts":[[2021,3,8]],"date-time":"2021-03-08T17:24:08Z","timestamp":1615224248000},"page":"794-806","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Orthopedic and ultrasonographic examination findings in 128 shoulders of 64 ultra\u2010endurance Alaskan sled dogs"],"prefix":"10.1111","volume":"50","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-1905-9008","authenticated-orcid":false,"given":"Dirsko J. 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