As a firefighter I do everything from fight grass fires, house fires, rubbish fires, car fires, anything that can catch on fire weâd be called for it. We go to medical calls, any time ambulances are called out we go to it. We do everything from heart attacks to small injuries to car wrecks.
Facio maxillary fractures involving mandible, zygoma and zygomatic arch can cause Trismus. These fractures interfere with movement of temporomandibular joint causing trismus. Commonest cause of trismus in this category is direct trauma causing fractures of mandible and. other facial bones.
Trismus is a more difficult TMJ symptom to diagnose accurately. It is when you can't open your mouth very far. The opening can be anywhere from 5 mm to 32 mm usually. Trismus is a muscle Spasm that doesn't allow you mouth to open very far. It can go away as fast as it came, or it may take a month or two to unspasm. This can also be called Lock Jaw. But, in my office, a Locked Jaw is when the disc is displaced and binds up your jaw in a way that you cannot open it unless the disc is in place again, or slipping or translating freely which does allow opening of the jaw.