Temporomandibular Joint Dysfunction (TMJ) is a common injury as a result of hyperextension/hyperflexion movements, in addition to other causes. As part of the presentation of this type of injury, the jury needs to understand the anatomy of the skull, the location of the temporal bone and the mandible, and the function of the articular disc. Certain groups of muscles and ligaments are also often involved in the mechanics of the injury to this area.

Skull Model

The first step in the presentation of this type of injury should be the orientation of the mandible (jaw) to the rest of the skull, illustrating the movement of the bone at the joint. It can also be used to show how, when the head is thrown back in a rear end impact, the jaw lags behind, stretching the ligaments and creating a misalignment that will effect the TM joint.

 

TMJ Color Exhibits

There are several excellent color exhibits available for this injury presentation. Exhibits D-1 through D-4 are 30x40 Mounted full color exhibits that are laminated and frames for protection. Exhibit is available in either 24x36 or 36x48 sizes. This exhibit shows normal anatomy of the entire side of the head, as well as a close-up illustration of the articular joint in detail. Mounted and laminated, this exhibit is an excellent re-useable illustration for all your cases

 

MRI Prints

Once you have introduced the anatomy to the jury, the next step is to present the objective findings. If you have the MRI films of the joint, a 16x20 print, mounted on foamcore with overlay and color markers, will allow the doctor to present your client's specific condition. The jury will understand what they are looking at, having been taught the anatomy from the model and charts. These prints can be captioned and colored on request to help identify each part of the joint.