ROTATORY INTRAARTICULAR DISLOCATION OF THE PATELLA IN 2 DOGS

Rotatory intra-articular dislocation of the patella is an unusual cond ition, apparently traumatic in origin, that affects young dogs. In rot atory intra-articular dislocations, the proximal and middle portions o f the patella become traumatically separated from the parapatellar fib rocartilage and the basis patellae rotates caudodistally within the jo int. As the basis patellae rotates distally, it can become lodged in t he intercondyloid fossa of the femur, necessitating open reduction.