**5. Conclusion**

Canine elbow joint kinematics are more complex than flexion and extension of the joint and influenced by multiple factors like breed, limb length, gait, exercise and joint pathologies. The precise interaction of the three joint forming bones is essential for physiologic joint contact and intra articular force and pressure distribution. Based on the current literature an significantly increased humero-ulnar rotational movement as well as an reduced adjustment of the radio-ulnar joint during the regular locomotion of the dog seem to be two essential pathological factors influencing the development of MCD. This kind of movement is only measurable using laborious techniques like 3D fluoroscopic based kinematography. Nevertheless, further studies are needed to evaluate the complex kinematics of the healthy and the diseased canine elbow joint and to understand the effect of different kinematics onto kinetics.
