The above horse, a 20 year old Cob gelding, presented with acute onset moderate (4/10) left hind lameness, a positive response to flexion testing, and significant effusion of the digital sheath.
Ultrasound showed significant synovitis and synovial proliferation, with no evidence of tendon pathology. The most significant finding was disruption and thickening of annular ligament at 3b, 4.
Synovitis is the injury/ disease of the synovial membranes located in joints. These membranes can come under pressure and when they become compromised they can cause the horse pain, resulting in lameness.
The above ultrasound scan was taken at the time of presentation.
Suspected acute annular ligament / digital sheath desmitis. Initial treatment consisted of bute, cartrophen injections and ice.