Objective; To determine the effect of the proximal abducting ulnar osteotomy (PAUL) on contact mechanics within the normal canine elbow. Methods: Forelimbs were mounted in a servohydraulic testing frame, and thine film sensors were placed into the lateral and medial compartments of the elbow. Intra-articular contact area (CA), mean contact pressure (mCP) and peak contact pressure (pCP}were determined for each compartment of a normal elbow and after sequential treatment with 2mm and 3mm PAUL plates. Results: In both compartments, CA significantly decreased from baseline with application of the 2mm PAUL plate. Otherwise, treatment with the 2mm and 3mm PAUL plate did not significantly alter CA, mCP or pCP in the medial or lateral compartment compared to normal elbow joints, nor did the percent contribution relative to the whole joint change significantly. Couclusion: In the normal elbow, using this experimental set-up, the PAUL plates did not result in any significant intra-articular anatomic changes that resulted in measurable alterations of joint contact pressures.