Synovial chondromatosis in raptors

Area of Science:

• Veterinary Pathology
• Avian Medicine
• Wildlife Health

Background:

• Perisynovial and synovial chondromatosis are proliferative cartilaginous lesions that can affect multiple joints.
• These lesions have been observed in various animal species, but their occurrence in raptors is less documented.
• Raptors experiencing joint issues may suffer from severe debilitation, impacting their mobility and survival.

Purpose of the Study:

• To document cases of perisynovial and synovial chondromatosis in raptors admitted to a rehabilitation center.
• To describe the clinical presentation and severity of joint lesions in affected birds.
• To highlight the unknown etiology of these conditions in avian species.

Main Methods:

• Review of medical records for raptors admitted between June 1992 and June 1995.
• Identification of cases with perisynovial and synovial chondromatosis affecting multiple joints.
• Clinical assessment of debilitation, focusing on loss of shoulder motion.

Main Results:

• Fourteen raptors (13 great horned owls, 1 red-tailed hawk) were diagnosed with perisynovial and synovial chondromatosis.
• Affected birds originated from Minnesota, Wisconsin, and South Dakota, USA.
• Severe debilitation, primarily due to loss of shoulder motion, was a consistent finding.

Conclusions:

• Perisynovial and synovial chondromatosis can cause significant joint disease and debilitation in raptors.
• The condition affects multiple species of raptors, including great horned owls and red-tailed hawks.
• The underlying cause (etiology) of these joint lesions in raptors is currently unknown and warrants further investigation.