Humeral intracondylar fissures and intracondylar sclerosis are common CT findings in the limb contralateral to a humeral condylar fracture in French bulldogs and spaniel breeds.

Abstract

French bulldogs (FBD) are reported to be at an increased risk of developing humeral condylar fractures (HCF). Spaniel breeds have been reported to be at increased risk of HCF due to a high prevalence of humeral intracondylar fissures (HIF), which can predispose to fracture. The aims of this retrospective, single center, observationalstudy were twofold. First, to comparethe signalment, fracture configuration, and etiology of populations of FBD and spaniel breeds presenting with HCF at a single hospital. Second, to evaluate the computed tomographic (CT) findings of the contralateral elbow joints of FBD and spaniel breeds presenting with HCF for concomitant pathology. FBDs were overrepresented for HCF, most commonly presenting when skeletally immature, with a median age of 3.7 months. Fractures of the lateral condyle were the most common configuration for both breed groups. Sclerosis at the fracture site was identified in 62% of FBD and 95% of spaniels undergoing CT scans. Humeral intracondylar fissures and intracondylar sclerosis were commonly observed in the contralateral elbows of FBD (44% and 50%, respectively) and spaniel breeds (58% and 95%, respectively). Medial coronoid pathology, elbow incongruency, and periarticular osteophytes were not identified in the contralateral elbows of FBD but were identified in 29%, 4%, and 20% of spaniels, respectively. The high prevalence of HIF in the FBD group may be a predisposing factor for HCF in this breed.