Computed Tomography Topographical Analysis of Incomplete Humeral Intracondylar Fissures in English Springer Spaniel...

Area of Science:

• Veterinary Radiology
• Canine Orthopedics
• Comparative Anatomy

Background:

• Humeral intracondylar fissure (HIF) is a common condition in English springer spaniels (ESS).
• Understanding the morphology and propagation of HIF is crucial for diagnosis and treatment.

Purpose of the Study:

• To characterize the typical shape, origin, and propagation pattern of HIF in ESS.
• To correlate HIF size with its anatomical features using computed tomography (CT).

Main Methods:

• Retrospective analysis of 32 elbow CT scans from 27 ESS with incomplete HIF.
• Measurements included HIF articular surface length, depth, sagittal area, and isthmus dimensions.
• HIF measurements were analyzed as proportions of the isthmus area (%HIF).

Main Results:

• HIF typically originates approximately 57 degrees caudal to the supratrochlear foramen.
• HIF articular surface length increased significantly with increasing %HIF.
• Propagation showed a segmental pattern, with less extension into the proximal intracondylar region.

Conclusions:

• HIF in ESS has a characteristic origin and a segmental propagation pattern.
• CT measurements provide valuable insights into HIF morphology in this breed.
• Findings contribute to a better understanding of HIF pathogenesis in ESS.