To properly diagnose the Terrible Triad of the Elbow, the following tests may be needed:
1. X-rays: Front and side views of X-rays are essential to determine the extent of the injury and check the health of the joints in the elbow.
2. CT scan: A CT scan can provide a more detailed view of the fractures, including their size, shape, and displacement. It can also identify other bone injuries in the elbow that were not spotted on X-rays.
3. Three-dimensional (3D) imaging: 3D images provide an even more detailed view of the fractures and can help the doctor plan the treatment better.
These tests help in accurately diagnosing and assessing the Terrible Triad of the Elbow, guiding the appropriate treatment approach.