Dislocated Jaw, Locked-Open Mouth, and Severe Maxillofacial Fracture Airway Care¶

Whether a person's lower jaw becomes stuck wide open after a big yawn or dental visit (Acute Temporomandibular Joint [TMJ] Dislocation), or their lower jaw and midface are shattered in a car crash, assault, or fall (Bilateral Mandibular "Flail Jaw" Fracture and Le Fort I, II, or III Maxillofacial Fractures), the #1 immediate threat to life is acute upper airway obstruction. Because the human tongue is anchored directly to the front inner arch of the lower jawbone (the mandibular symphysis), a fracture on both sides of the chin allows the entire horseshoe arch of bone and the tongue to fall straight backward against the back of the throat the moment the victim is laid flat on their back (glossoptosis). Even worse, broken upper jaws (Le Fort fractures) tear the branches of the internal maxillary artery, pouring blood, blood clots, and knocked-out teeth down into the trachea if the patient is strapped supine onto a backboard. If anyone with a facial or jaw injury has noisy gurgling or snoring breathing, heavy bleeding from the mouth and nose, or a jaw locked open, call your local emergency number immediately via emergency numbers. Review related trauma care in dental emergencies and knocked-out teeth, head injuries and concussion, and spinal injuries and immobilization.

Do this now¶

1. NEVER force a conscious patient with a severe lower jaw or midface fracture to lie flat on their back (supine). If an awake patient with a shattered jaw or bleeding face is fighting to sit up and lean forward, let them sit upright leaning forward so gravity pulls their tongue forward and lets blood, saliva, and broken teeth drain out of their mouth into a basin rather than drowning their lungs.
2. If the patient is unconscious or requires spinal immobilization, place them in the Lateral Trauma Recovery Position (log-rolled onto their side with inline manual neck stabilization) or pull their tongue and lower jaw forward immediately. Laying an unconscious victim with a bilateral mandibular fracture or Le Fort III midface fracture flat on their back causes the unsupported tongue or fractured upper palate to seal the airway shut within seconds.
3. Call your local emergency number immediately (911 in the United States and Canada, 112 across the European Union, 999 in the United Kingdom) for any high-energy facial trauma, jaw fracture, or dislocated jaw that cannot close.
4. Look inside the mouth immediately and sweep out loose blood clots, knocked-out teeth, broken dentures, or vomit using a gloved finger or suction. Knocked-out teeth and broken acrylic denture fragments sitting in a pool of blood in the mouth are frequently inhaled into the windpipe (tracheobronchial aspiration) on the next deep breath. Save intact knocked-out permanent teeth in cold milk or saline (see dental emergencies).
5. If a patient whose jaws are wired shut (Maxillomandibular Fixation [MMF]) or banded with tight elastics after jaw surgery begins vomiting or choking:
6. Sit them upright and lean their head forward immediately so liquid vomit can escape through the gaps behind their back molar teeth and through their nose.
7. Only if they cannot clear their airway, are turning blue, or are losing consciousness: Use the emergency wire cutters or heavy trauma shears (which must stay taped to the patient's hospital bed or carried in their shirt pocket at all times) to snip the vertical intermaxillary wires or rubber bands running UP-AND-DOWN between the upper and lower arch bars (never waste time trying to cut the horizontal wires wrapped around the teeth themselves).
8. For a painless or aching "Locked-Open Jaw" after yawning, laughing, or vomiting (Acute Anterior TMJ Dislocation with zero trauma): Support the bottom of the lower jaw gently with your hands or a soft towel sling, apply a warm compress over the cheek muscles in front of the ears to reduce masseter muscle spasm, do not try to slap or force the chin upward (which breaks the condylar neck), and go to the Emergency Department for a gentle Syringe-Roll or Bimanual Reduction.
9. Check for numbness of the lower lip and chin, and check whether the back teeth meet normally. Even if the outside of the face looks only mildly swollen after a punch or fall, feeling that your teeth no longer line up when you gently touch them together (malocclusion, the single most sensitive sign of a jaw fracture) or feeling numbness in your lower lip and chin (inferior alveolar nerve injury) proves the mandible is broken.

Decision tree: Airway management and differential triage of jaw dislocation vs. facial fractures¶

flowchart TD
    Start["Acute Jaw / Facial Trauma OR Sudden Inability to Close Mouth ('Locked-Open Jaw')"] --> AirwayFirst{"STEP 1: Check Airway Patency & Mechanism: Is there high-energy trauma, heavy oral/nasal bleeding, gurgling/stridor, or an unstable lower jaw?"}

    AirwayFirst -->|"YES: Severe Facial Trauma, Bleeding, or Stridor/Gurgling"| PositionAirway["IMMEDIATE AIRWAY POSITIONAL RESCUE: 1. Call 911 / 112 / 999 Immediately. 2. If Awake: Sit UPRIGHT leaning forward to drain blood & keep tongue forward. 3. If Unconscious: Log-roll onto SIDE (Lateral Trauma Position) with inline C-spine control + pull tongue/chin anteriorly. 4. ZERO nasal tubes."]

    PositionAirway --> FractureType{"Identify Specific High-Risk Maxillofacial Fracture Pattern"}

    FractureType -->|"Lower Jaw Arch Loose on Both Sides + Tongue Falling Back + Floor-of-Mouth Bruising"| FlailMandible["BILATERAL MANDIBULAR ('FLAIL / BUCKET-HANDLE') FRACTURE: Pull anterior chin segment/tongue forward manually or with towel clip/traction suture; prepare emergency awake or surgical airway (cricothyrotomy)."]

    FractureType -->|"Upper Jaw / Midface Mobile When Pulling Upper Front Teeth + Profuse Nose/Throat Bleeding"| LeFortPath["LE FORT I, II, OR III MIDFACE FRACTURE: Keep upright/lateral; anterior/posterior nasal balloon packing + manual palatal reduction if internal maxillary artery hemorrhage; check for CSF rhinorrhea."]

    AirwayFirst -->|"NO Trauma or Minimal Force (Yawning, Laughing, Dental Exam, Vomiting, or Antipsychotic Drug): Mouth Stuck Wide Open"| TMJCheck{"STEP 2: Evaluate Non-Traumatic 'Locked-Open Mouth': Are Both Sides Symmetric or is Chin Shifted to One Side?"}

    TMJCheck -->|"Mouth Locked Wide Open Centered (Bilateral) OR Chin Deviated to Opposite Side (Unilateral) + Hollow Pit in Front of Ear"| AnteriorTMJ["ACUTE ANTERIOR TMJ DISLOCATION: 1. Check for Drug-Induced Acute Dystonia (haloperidol, metoclopramide -> give IV diphenhydramine / benztropine). 2. Go to Emergency Department for Syringe-Roll ('Hands-Free') or Bimanual Hippocratic Reduction."]

    TMJCheck -->|"History of Punch/Fall + Teeth Do Not Line Up (Malocclusion) + Numb Lower Lip + Floor-of-Mouth Hematoma"| SimpleMandible["MANDIBULAR OR CONDYLAR FRACTURE: 1. Do NOT attempt TMJ reduction before CT/Panorex X-ray. 2. Failed 'Blade Bite Test'; requires Emergency Department CT, IV antibiotics (open fracture via tooth socket), & maxillofacial fixation."]

Condition 1: Acute Temporomandibular Joint (TMJ) Dislocation (The "Locked-Open Jaw")¶

Anatomy: How the mandibular condyle gets trapped in front of the articular eminence¶

The temporomandibular joint (TMJ) is a hinge-and-glide joint where the rounded ball at the top back of the lower jawbone (the mandibular condyle) sits inside a shallow socket at the base of the skull in front of the ear canal (the glenoid fossa). Directly in front of that socket sits a smooth bony hill called the articular eminence of the temporal bone: 1. Normal Mouth Opening: When you open your mouth slightly, the condyle rotates like a hinge inside its socket. When you open wide to yawn or bite a thick sandwich, the lateral pterygoid muscle pulls the condyle forward onto the back slope of the articular eminence, and it glides back into its socket when you close your mouth. 2. Anterior TMJ Dislocation (95% of TMJ Dislocations): During an extreme wide-mouth opening, such as a deep yawn, loud laugh, prolonged dental extraction, vomiting, seizure, or laryngoscopy, the mandibular condyle slides too far forward, jumping completely over the peak of the articular eminence into the infratemporal fossa. 3. Why the Jaw Cannot Close on Its Own (The Masseter Spasm Trap): The moment the condyle slips in front of the peak of the articular eminence, the jaw-closing muscles (masseter, temporalis, and medial pterygoid) go into painful protective spasm. Instead of pulling the jaw backward into its socket, those spasming muscles pull the condyle straight UPWARD above the peak of the articular eminence, mechanically locking the jaw wide open.

Bilateral vs. Unilateral Anterior TMJ Dislocation (Visual Clues)¶

• Bilateral Anterior TMJ Dislocation (Most Common): Both the left and right condyles jump forward out of their sockets. The mouth is locked symmetrically wide open (\(3\text{ to }5\text{ centimeters}\) between the front teeth), the lower jaw juts forward (prognathic appearance), the person drools saliva, speaks with muffled speech, and has a palpable hollow pit directly in front of both ear tragi.
• Unilateral Anterior TMJ Dislocation: Only ONE condyle jumps forward out of its socket. The mouth is stuck open, AND the chin is visibly shifted toward the OPPOSITE (healthy) side.
• Contrast with a Condylar Neck Fracture:
  • Unilateral TMJ Dislocation: Chin deviates AWAY from the injured side (toward the healthy side), and the mouth is locked open.
  • Unilateral Mandibular Condylar Fracture: Chin deviates TOWARD the injured (broken) side when opening the mouth.

Always Rule Out Drug-Induced Acute Oromandibular Dystonia (The Great TMJ Mimic)¶

Before assuming a locked-open or twisted jaw is purely mechanical, ask: "Has the patient taken an anti-nausea drug, antipsychotic medication, or street drug within the past 24 to 72 hours?" - Medications that block dopamine D2 receptors, specifically metoclopramide (Reglan), prochlorperazine (Compazine), promethazine (Phenergan), haloperidol (Haldol), risperidone, olanzapine, or aripiprazole, can trigger an acute extrapyramidal dystonic reaction (oromandibular dystonia). - What Happens: Involuntary tetanic contraction of the lateral pterygoid, tongue, and neck muscles pulls the jaw wide open or sideways (often dislocating the TMJ secondarily), accompanied by tongue protrusion or upward rolling of the eyes (oculogyric crisis). - Emergency Cure: Administering Intravenous or Intramuscular Diphenhydramine (\(25\text{ to }50\text{ mg}\)) or Benztropine (\(1\text{ to }2\text{ mg}\) IV/IM) breaks the central muscle spasm within 5 to 15 minutes, often allowing the jaw to slide back into place spontaneously.

Hospital Reduction Techniques for Anterior TMJ Dislocation¶

(First Aid Rule: Never punch, slap, or shove the front of a dislocated chin upward, which can fracture the condylar neck. Reduction requires moving the back molar teeth DOWNWARD first to clear the peak of the articular eminence, and then gliding backward).

1. The Non-Invasive "Hands-Free" Syringe-Roll Technique (Fastest & Least Painful Modern Method, 95%+ Success Rate):
2. No intravenous sedation and no doctor's thumbs inside the mouth are required.
3. The clinician places a plastic 5-milliliter or 10-milliliter medical syringe barrel horizontally between the patient's upper and lower back molar teeth on the dislocated side.
4. The patient gently bites down on the syringe barrel and rolls the syringe forward and backward between their back teeth like a rolling pin.
5. How It Works: Biting on the syringe barrel uses it as a Class I fulcrum to lever the back of the jaw downward while rolling glides the condyle backward over the articular eminence into its socket within 60 to 120 seconds.
6. The Extraoral Technique: On one side, the physician pulls the coronoid process backward on the outside of the cheek while pushing the opposite condyle gently back, avoiding putting fingers inside the mouth.
7. Classic Intraoral Bimanual (Hippocratic) Reduction (With Local TMJ Lidocaine Block or Sedation):
8. The physician wraps both thumbs in thick gauze, braces the seated patient's head firmly against a wall, places both thumbs on the lower back molar ridges (external oblique ridge), wraps fingers under the chin, pushes firmly DOWNWARD on the back molars to unlock the condyle below the eminence while tilting the chin slightly up, and glides the jaw BACKWARD.
9. Post-Reduction Care: Apply a soft chin-head wrap, follow a soft no-chew diet for 7 to 10 days, and always place a fist under the chin whenever yawning so the mouth cannot open wider than 2 centimeters.

(Note on Rare Superior and Posterior TMJ Dislocations: If a high-energy blow strikes the chin, the condyle can be driven UPWARD into the middle cranial fossa [Superior Dislocation] or BACKWARD into the ear canal [Posterior Dislocation, causing ear bleeding]. Never attempt closed reduction on a traumatic dislocation with ear bleeding or neurological signs; obtain an immediate CT scan).

Condition 2: Mandibular Fractures and the Lethal "Flail / Bucket-Handle" Jaw¶

Why the Mandible Breaks in Two Places at Once (The "Ring Bone" Rule)¶

The lower jaw (mandible) is a rigid U-shaped bony arch attached to the skull at both ends by the temporomandibular joints, forming a closed biomechanical ring: - Clinical Ring Rule: Just like a hard pretzel or the bony pelvis, you almost never break a rigid bony ring in only one spot. Over 50 percent of all mandibular fractures are bilateral or multiple (for example, a right punch to the jaw causes a fracture at the right mandibular body/parasymphysis directly under the fist AND a second counter-coup fracture at the left mandibular angle or left subcondylar neck on the opposite side). - Whenever one fracture is found in the mandible, clinicians must hunt for the second fracture on the opposite side.

How a Bilateral Mandibular Fracture Causes Asphyxiation ("The Flail Mandible")¶

The largest muscle of the human tongue (the genioglossus muscle, which pulls the tongue forward to keep the pharyngeal airway open) attaches directly to two tiny bony spines (the genial tubercles) on the inner back surface of the front chin bone (the mandibular symphysis): - If an assault, steering wheel impact, gunshot, or fall breaks the lower jaw on both the left and right sides of the chin (a bilateral parasymphyseal or bilateral body "bucket-handle" fracture), the central chin fragment where the tongue attaches is now completely disconnected from the rest of the skull. - What Happens When the Patient Lies Flat on Their Back: The moment paramedics or bystanders lay a patient with a bilateral mandibular fracture flat on their back, gravity and the downward pull of the mylohyoid and geniohyoid muscles drag that disconnected central chin bone and the entire base of the tongue straight backward against the posterior pharyngeal wall, sealing the airway shut completely (acute mechanical glossoptosis). - Immediate Life-Saving Rescue: 1. Sit the conscious patient upright leaning forward so gravity pulls the flail chin segment and tongue forward out of the throat. 2. In an unconscious or supine patient: Do not rely on a normal head-tilt (which does nothing when the chin is disconnected from the skull). Grasp the front lower teeth and chin bone fragment directly with a gloved hand (or wrap gauze around the tongue itself) and pull the broken central chin segment and tongue straight FORWARD (anteriorly) toward the ceiling. In the resuscitation bay, trauma surgeons pass a thick silk stitch or towel clip through the midline tongue or around the symphysis to hold it forward until the airway is intubated or a surgical cricothyrotomy is performed.

Bedside Signs of a Mandibular Fracture (And the "Tongue Blade Bite Test")¶

Check every patient with facial trauma for these Five Classic Signs of a Broken Lower Jaw: 1. Subjective Malocclusion (Most Sensitive Symptom): Ask the patient gently: "When you bring your teeth lightly together, does your bite feel normal, or do some teeth hit too early?" Human teeth have neuroreceptors sensitive to shifts of less than 0.1 millimeters; if the patient says their bite feels "off," the jaw is fractured until proven otherwise by CT. 2. Sublingual Hematoma (Pathognomonic Sign): Ask the patient to lift the tip of their tongue toward the roof of their mouth and look at the floor of the mouth under the tongue. Dark purple or red bruising (ecchymosis) or a raised hematoma on the floor of the mouth is virtually 100 percent diagnostic of an underlying mandibular body or symphyseal fracture. 3. Lower Lip and Chin Numbness (Inferior Alveolar / Mental Nerve Anesthesia): The inferior alveolar nerve runs inside a hollow bony tunnel through the center of the lower jawbone before exiting at the chin. A fracture through the angle, body, or parasymphysis stretches or severs this nerve, leaving half of the lower lip and chin numb. 4. Gingival Step-Off and Bleeding Between Teeth: A visible stair-step gap or tear in the gumline between two lower teeth. (Important Infection Rule: Because the periodontal ligament space around every tooth communicates directly with the underlying jawbone, EVERY mandibular fracture that passes through a tooth-bearing segment is clinically an OPEN (COMPOUND) FRACTURE exposed to saliva bacteria, requiring intravenous antibiotics such as ampicillin-sulbactam or clindamycin). 5. The Tongue Blade Bite Test (95% Negative Predictive Value in Clinical Studies): If a patient has mild jaw pain and normal-looking teeth, an emergency clinician places a wooden tongue depressor flat between the left molars, asks the patient to bite down hard, and twists the wooden blade. If the patient can bite hard enough on both the left and right sides that the doctor can snap the wooden tongue blade in half by twisting it, a clinically significant mandibular fracture is ruled out with \(>95\%\) certainty.

Condition 3: Le Fort I, II, and III Midface Fractures¶

In high-speed motor vehicle collisions, motorcycle crashes, industrial impacts, or severe falls, blunt force striking the middle of the face fractures the maxilla (upper jaw), nasal bones, orbits, and pterygoid plates of the sphenoid bone along three classic structural weak lines described by French surgeon René Le Fort.

Master clinical comparison of Le Fort I, II, and III fractures¶

Emergency Control of Torrential Maxillofacial Bleeding and CSF Leak Recognition¶

1. Why Le Fort Fractures Bleed Torrentially: The midface is supplied by the internal maxillary artery (a large terminal branch of the external carotid artery running right behind the fractured pterygoid plates) and the anterior/posterior ethmoidal arteries (from the internal carotid). When a Le Fort II or III fracture shatters the posterior maxilla, blood pours simultaneously out of both nostrils and straight down the back of the throat, rapid-filling the stomach and airway.
2. Pre-Hospital / ER Hemorrhage Control: Sit the patient upright leaning forward if awake, or in the lateral recovery position if unconscious. Once an oral endotracheal tube or surgical cricothyrotomy secures the airway, emergency physicians insert dual-balloon posterior/anterior nasal epistaxis catheters (or Foley catheters), pack the oral cavity and pharynx tightly with gauze against the stabilized mandible, and manually pull the impacted maxilla forward and upward (reducing the bone fragments slows arterial tearing) while activating interventional radiology for transcatheter arterial embolization.
3. How to Recognize a Cerebrospinal Fluid (CSF) Leak Mixed with Nasal Blood:
4. In a Le Fort II or III fracture, clear watery cerebrospinal fluid leaking from a torn dural membrane at the roof of the nose mixes with blood.
5. Signs: The patient notices a persistent metallic or salty watery drip running down the back of their throat when sitting up, or clear fluid dripping rapidly from the nose when leaning forward. If a drop of bloody nasal fluid falls onto a white pillowcase or gauze sheet, the clearer watery CSF migrates outward faster than red blood cells, forming a faint yellowish-pink ring around the central blood spot (the "Halo" or "Double-Ring" Sign; confirmed in the hospital lab via Beta-2 Transferrin testing).
6. First Aid Rule for CSF Rhinorrhea: Never pack the nose tightly at home, never blow the nose, and never try to plug the nostrils to stop clear fluid from dripping out. Blocking a CSF leak forces contaminated nasal bacteria upward through the dural tear into the brain, causing fatal bacterial meningitis or pushing air into the cranial vault (tension pneumocephalus). Loosely catch dripping fluid on a sterile gauze pad held under the nose.

Special Scenario: Emergency Care for Patients With Wired Jaws (Maxillomandibular Fixation)¶

Patients recovering from mandibular or Le Fort fracture surgery frequently return home for 2 to 6 weeks with metal arch bars wired to their upper and lower gums and connected together by vertical stainless-steel wires or heavy orthodontic rubber bands (Maxillomandibular Fixation [MMF]).

The Vomiting & Choking Protocol for Wired-Jaw Patients¶

1. Why Vomiting Usually Does NOT Require Cutting the Wires Automatically: Liquid vomit and stomach acid can pass out through the gaps behind the back molars (the retromolar trigone), between the teeth, and through the nostrils PROVIDED the patient sits immediately upright and leans their head and torso forward over a sink or basin. Every wired-jaw patient should be prescribed oral or dissolvable sublingual ondansetron (Zofran) at home to prevent nausea before it starts.
2. Mandatory Wire-Cutter Rule: Every patient with stainless-steel intermaxillary wire fixation must carry dedicated surgical wire cutters (or heavy trauma shears for elastic bands) on a lanyard around their neck, in their pocket, or taped visibly to the head of their bed 24 hours a day.
3. Where to Cut in a Life-Threatening Airway Emergency: If a wired-jaw patient inhales solid vomit, cannot clear their airway leaning forward, is turning cyanotic (blue), or becomes unconscious:
4. Pull the upper and lower lips apart to expose the metal arch bars on the gums.
5. Cut ONLY the vertical wires (or rubber bands) running UP-AND-DOWN between the upper and lower jaws (usually 2 to 3 wire loops on the left side and 2 to 3 loops on the right side).
6. Do NOT try to cut the horizontal wires wrapped around the base of the individual teeth, which do not hold the jaws shut. Once the vertical loops are snipped, the lower jaw opens immediately.

Regional emergency numbers and agency protocols¶

• United States and Canada: Dial 911. Under ACS ATLS and AAOMS trauma protocols, maxillofacial trauma with airway compromise is transported upright/leaning forward (if awake and c-spine cleared) or with suction and lateral positioning to a Trauma Center equipped for video laryngoscopy and surgical cricothyrotomy.
• United Kingdom: Dial 999 (or 112). Follow Resuscitation Council UK, NICE Major Trauma (NG39), and BAOMS guidelines for maxillofacial hemorrhage control, avoidance of nasal airways in skull base trauma, and TMJ reduction.
• European Union: Dial 112. Follow ERC and EACMFS trauma airway guidelines.
• Australia and New Zealand: Dial 000 in Australia or 111 in New Zealand. Follow ANZCOR and ANZAOMS protocols.
• India and Asia-Pacific: Dial 112 in India, 119 in Japan and South Korea, or 995 in Singapore. In motorcycle crashes with combined mandibular and Le Fort fractures, keep the victim leaning forward or on their side during transport so oral blood drains externally.

See emergency numbers for all international emergency dispatch numbers.

Frequently asked questions¶

Why did my jaw lock wide open after a big yawn, and why can't I just push my chin up to close it?¶

When you open your mouth unusually wide during a yawn, laugh, or dental procedure, the rounded joint ball at the back of your lower jaw (**the mandibular condyle**) glides forward right over the peak of a bony hill in front of your ear socket (**the articular eminence**). Immediately, your cheek muscles (**the masseters**) spasm and pull the condyle upward in front of that bony hill, trapping it. Trying to push the front of your chin straight up jams the bone harder against the hill; a doctor must first press the **back molar teeth downward** (or have you roll a syringe barrel between your back molars) to clear the bony hill before the jaw can glide backward into its socket.

How can an anti-nausea pill like Reglan or Compazine make my jaw dislocate?¶

Anti-nausea drugs like metoclopramide (Reglan) and prochlorperazine (Compazine), as well as antipsychotic medications like haloperidol or risperidone, block dopamine receptors in the basal ganglia of the brain. In some people, especially children, teens, and young adults, this triggers a sudden involuntary muscle spasm called an **acute dystonic reaction (oromandibular dystonia)**, where the pterygoid muscles violently pull the jaw wide open or sideways. An intravenous injection of **diphenhydramine (Benadryl) or benztropine** in the emergency room reverses the muscle spasm within minutes.

Why is laying someone flat on their back on a stretcher so dangerous when their lower jaw is broken on both sides?¶

Your tongue is anchored directly to the inner back side of your front chin bone (**the mandibular symphysis**). Normally, the rigid arch of your lower jawbone holds your chin and tongue forward away from your windpipe. When the lower jaw is broken on both sides of the chin (**a bilateral "flail" or "bucket-handle" fracture**), the front chin piece becomes disconnected. Laying the victim flat on their back causes gravity to drop the broken chin piece and the tongue straight back into the throat, suffocating them unless they sit leaning forward or someone pulls their chin and tongue forward.

Why is any broken jaw where the gums are bleeding between two teeth treated like an "open compound fracture"?¶

Even if the outside skin of your cheek and chin has zero scratches, the microscopic ligament pocket around the root of every tooth (**the periodontal ligament**) connects directly to the bone marrow of the jaw. Whenever a fracture line cracks between two teeth and tears the gumline inside the mouth, human saliva, containing hundreds of millions of bacteria per milliliter, floods directly into the raw broken bone, making it an **open fracture** that requires prescription antibiotics to prevent bone infection (**osteomyelitis**).

Why are doctors and paramedics strictly forbidden from putting a breathing tube or stomach tube through the nose after a midface (Le Fort) crash?¶

A Le Fort II or Le Fort III midface fracture, or any trauma causing bilateral black eyes ("raccoon eyes"), bruising behind the ears ("Battle's sign"), or a crushed nasal bridge, frequently cracks the paper-thin **cribriform plate of the ethmoid bone** that forms the roof of the nasal cavity and the floor of the brain vault. Pushing a flexible nasal airway or nasogastric tube up the nose when that bone plate is cracked can send the tube straight through the roof of the nose **into the frontal lobes of the brain**; all tubes must pass through the mouth instead.

Once my dislocated jaw is popped back into place in the emergency room, how do I stop it from happening again?¶

Every time the temporomandibular joint dislocates, the ligament capsule holding the joint ball gets stretched out, making repeat dislocations easier during the first 2 weeks. Stick strictly to soft foods requiring zero wide biting for 10 to 14 days, avoid opening your mouth wider than one finger width, and **always press your fist firmly under your chin whenever you feel a yawn, sneeze, or laugh starting** to block your jaw from opening wide.

Related guides¶

• Dental emergencies and knocked-out tooth care
• Choking and airway obstruction first aid
• Head injuries and concussion
• Spinal injuries and immobilization

Sources and official guidance¶

• American College of Surgeons (ACS, United States) Committee on Trauma: Advanced Trauma Life Support (ATLS) Student Course Manual (Maxillofacial trauma airway positioning, flail mandible tongue traction, contraindication of nasopharyngeal/nasogastric tubes in cribriform plate/midface fractures, and hemorrhage control).
• American Association of Oral and Maxillofacial Surgeons (AAOMS, United States): Parameters of Care: Clinical Practice Guidelines for Oral and Maxillofacial Surgery (Trauma and Temporomandibular Joint Dislocation Management).
• British Association of Oral and Maxillofacial Surgeons (BAOMS) and National Institute for Health and Care Excellence (NICE, United Kingdom): Major Trauma: Assessment and Initial Management (NG39) and Emergency Management of Maxillofacial Hemorrhage and Airway Obstruction.
• European Resuscitation Council (ERC) and European Association for Cranio-Maxillo-Facial Surgery (EACMFS): Guidelines on Airway Management in Traumatic Maxillofacial Injuries.
• American College of Emergency Physicians (ACEP, United States): Clinical Procedures in Emergency Medicine: Reduction of Temporomandibular Joint Dislocation (Syringe-Roll, Extraoral, and Intraoral Techniques) and Tongue Blade Bite Test Validation.