There is a sudden onset of lameness associated with some swelling of the stifle joint capsule.
Diagnosis and Treatment of Sprain of the Stifle Joint
Diagnosis is based on the clinical signs. Rest usually resolves the lameness. The duration of rest depends on the severity of the initial injury. If lameness persists, the stifle should be radiographed.
Bruising of the Stifle Region
Bruising of the stifle region is a common injury either as a result of a kick or hitting a fixed fence when jumping. The latter is a common injury of event horses. There is a variable degree of swelling and lameness.
Treatment of Bruising of the Stifle Region
Anti-inflammatory analgesic drugs are extremely helpful in reducing swelling and removing pain. Plenty of slow exercise prevents the horse from becoming excessively stiff, so if it can be turned out in a small paddock or walked in hand regularly, this is helpful. Provided that there is no underlying bony damage the prognosis is good. If the horse does not improve rapidly the stifle should be examined radiographically. A fracture of the patella or other bony damage might otherwise be missed.