Format

Send to

Choose Destination
Vet Comp Orthop Traumatol. 2016 May 18;29(3):220-6. doi: 10.3415/VCOT-15-11-0181. Epub 2016 Apr 12.

Influence of chondrodystrophy and brachycephaly on geometry of the humerus in dogs.

Author information

1
Dr. Marcellin-Little, North Carolina State University, Department of Clinical Sciences (DoCS), NCSU CVM VH #2563, 1052 William Moore Drive, Raleigh, NC 27607, United States, E-mail: denis_marcellin@ncsu.edu.

Abstract

OBJECTIVE:

To assess the geometry of canine humeri as seen on radiographs in chondrodystrophic dogs (CD) and brachycephalic dogs (BD) compared to non-chondrodystrophic dogs (NCD).

METHODS:

Mediolateral (ML) and craniocaudal (CC) radiographs of skeletally mature humeri were used (CD [n = 5], BD [n = 9], NCD [n = 48]) to evaluate general dimensions (length, width, canal flare, cortical thickness), curvature (shaft, humeral head, and glenoid), and angulation (humeral head and condyle). Measurements from CD, BD, and NCD were compared.

RESULTS:

Mean humeral length was shorter in CD (108 mm) compared to BD (184 mm, p = 0.001) and NCD (183 mm, p <0.001). Craniocaudal cortical thickness at 70% of humeral length and ML cortical thickness at 30%, 50%, and 70% of humeral length were less in CD compared to BD and NCD. Humeral shaft curvature was greater in CD (9.9°) compared to BD (6.7°, p = 0.023). The ratio of glenoid radius of curvature / humeral length was greater for CD (11.1%) compared to NCD (9.7%, p = 0.013). The ratio of humeral width / humeral length was greater for BD (29.4%) compared to NCD (26.2%, p = 0.043). The ratio of glenoid length / humeral length was greater in CD (18.0%) than BD (16.4%, p = 0.048) and NCD (15.6%, p <0.001).

CLINICAL SIGNIFICANCE:

Bone proportions and curvature in CD differ from BD and NCD. Differences are minor and unlikely to have clinical significance.

KEYWORDS:

Dog; anatomy; humerus

PMID:
27070343
DOI:
10.3415/VCOT-15-11-0181
[Indexed for MEDLINE]

Supplemental Content

Full text links

Icon for Georg Thieme Verlag Stuttgart, New York
Loading ...
Support Center