This 2 year od MN Border Collie mix presented with right front lameness after jumping from a truck. Right elbow mildly tender on palpation.
This 2 year od MN Border Collie mix presented with right front lameness after jumping from a truck. Right elbow mildly tender on palpation.
Right elbow: Reduced opacity and loss of the cranial contour of the tip of the right medial coronoid process (PCM) is noted.
A small isolated bone fragment is seen medial to the humero-radial joint space. Moderate periarticlar smooth new bone formations are noted medial and cranial to the radial head as well as at the anconaeal process, lateral humeral epicondyle.
There is a mildly increased soft tissue opacity in the area of the medial collateral ligament compared with the left elbow.
Left elbow: Marked blurring with loss of opacity of the cranial contour of the PCM is noted as well as sclerosis of the trochlear notch of the ulna caudal to the PCM. The periarticular margins present a moderate amount of arthritic smooth new bone formations emphasizing the anconeal process and radial head.
If the clinical lameness does not resolve computed tomographic examination and subsequent arthroscopic revision is recommended. Medial elbow joint instability should be assured clinically. However, the odds of clinically relevant instability with a possible avulsion fragment as small as this are considered low. Overall a dislodged fragment of the tip of the PCM with flare up of the lameness is more likely than a relevant ligamentous avulsion.
