Occipital condyle defects assessed by radiography or CT can be a normal finding in foals
| Autor: | Julien Olive, Sophie Elena Sage, Jean-Pierre Lavoie |
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| Rok vydání: | 2020 |
| Předmět: |
Male
040301 veterinary sciences Radiography Condyle 030218 nuclear medicine & medical imaging 0403 veterinary science 03 medical and health sciences 0302 clinical medicine Interquartile range medicine Animals Atlanto-occipital joint Horses Retrospective Studies Univariate analysis General Veterinary business.industry Ossification 04 agricultural and veterinary sciences Occipital condyle Skull medicine.anatomical_structure Cross-Sectional Studies Occipital Bone medicine.symptom business Nuclear medicine Tomography X-Ray Computed |
| Zdroj: | Veterinary radiologyultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology AssociationREFERENCES. 62(2) |
| ISSN: | 1740-8261 |
| Popis: | Age of complete ossification of equine occipital condyles has not been published. Consequently, clinical significance of occipital condyle defects on radiographs or CT scans of young horses remains unknown. The goals of this single-center, retrospective, cross-sectional study were to characterize incidental occipital condyle defects and to define the age of complete ossification. The margin of occipital condyles was classified as regular or with defect(s). Analyses were made on 121 horses, including 106 radiographic and 19 CT studies showing the occipital condyles of horses less than 5 years of age obtained over 6 years in a referral hospital. Neurological signs and outcome were not associated with occipital defects. Horses with regular occipital condyles on radiographs had a median age of 974 days (median interquartile range = 707) compared with 47 days (interquartile range = 106) in the defect group. The odds of finding radiographically regular occipital condyles were 2.6% higher for each additional day of age (P = .011, 95% CI, 0.6-4.7%). In the CT group, univariate analyses demonstrated a significant effect of age on the aspect of occipital condyles (P = .016). Horses with regular occipital condyles were older (median age = 881 days; interquartile range = 1054) than horses with a defect (median age = 109 days, interquartile range = 318). All horses above 156 days (5.1 months) of age and 550 days (18.1 months) of age had regular occipital condyles on radiographic and CT images, respectively. This study describes occipital condyle defects as a potential normal finding in young horses and provides guidelines for interpretation of the occipital condyle ossification process. |
| Databáze: | OpenAIRE |
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