Bilateral non-traumatic elbow luxation in a Yorkshire terrier puppy.

A 10-week-old Yorkshire terrier had lameness of the right forelimb with complete lateral radioulnar luxation at the humerus, consistent with Type III congenital elbow luxation; this is rarely treated in the presence of multiple skeletal deformities. Lateral subluxation of the radial head at the left elbow was diagnosed as Type I congenital elbow luxation. Procurvatum, distal valgus, and external torsion were present in both antebrachiae. Surgical stabilization of the right elbow was performed with temporary transarticular pins in the humeroulnar and radioulnar joints. A custom-made orthosis was applied to support the surgical reduction for 20 wk. Recurrent luxation was not observed. After complete right-sided function was established, the left forelimb showed noticeable instability in the antebrachium, and the puppy frequently fell while running. The lateral collateral ligament of the left elbow was augmented using screws and synthetic ligaments 22 wk after the right-side surgery. Congruity of the left elbow joint improved, and the puppy could bear full weight on the left forelimb, although slight deficits in movement and falling were observed. We demonstrate the effectiveness of combining a temporary transarticular pin and custom-made orthosis while treating Type III congenital elbow luxation and the inadequacy of collateral ligament augmentation alone for treating Type I congenital elbow luxation with antebrachium deformities. Key clinical message: Herein, we observed that a combination of a temporary transarticular pin and a custom-made orthosis was effective for the treatment of Type III congenital elbow luxations.