IOHC / Humeral Condylar Fissure

January 23, 2016

4.5mm titanium transcondylar screw

springer spaniel

Max presented with a sudden right fore lameness and pain localising to the elbow. He had previously had an incomplete ossifcation of the left humeral condyle. This is the small barrel like part of the end of the humerus that forms an essential part of the articulation with the radius ulna. Whilst formerly termed IOHC or incomplete ossification of the humeral condyle, humeral condylar fissures can occur at a later date when the condyle had previously fused. This was the case for Max! We were able to carefully place a 4.5mm titanium screw to bridge this fissure. Within two weeks Max was sound and comfortable on the leg. Accurate placement of this screws is critical and we used intra-operative radiography to confirm accurate placement. My friend, Duncan Barnes, and myself recently published an article outlining methodology for placement of transcondylar screws using data collected from a series of cases we had CT data on.
Barnes, Duncan M., Andy P. Morris, and Angus A. Anderson. “Defining a Safe Corridor for Transcondylar Screw Insertion Across the Canine Humeral Condyle: A Comparison of Medial and Lateral Surgical Approaches.” Veterinary Surgery 43.8 (2014): 1020-1031.