Zygomatic Bone Fracture (Displaced): Causes, Symptoms, and Treatment
What is Zygomatic Bone Fracture (Displaced)?
A zygomatic bone fracture (displaced) is a break in the zygomatic bone, commonly known as the cheekbone, where the broken pieces are no longer aligned correctly. The zygomatic bone forms the prominence of the cheek and contributes to the structure of the eye socket (orbit). When fractured and displaced, it can affect both the appearance and function of the face.
This type of fracture often occurs due to significant force or trauma to the face. Because the zygomatic bone connects to other facial bones, a displaced fracture may also involve damage to nearby structures, such as the eye socket, sinuses, or jaw.
According to the National Institutes of Health (NIH), zygomatic fractures are among the most common facial fractures, second only to nasal fractures.
Common Causes
A displaced zygomatic bone fracture typically results from high-impact trauma. Below are the most common causes:
- Motor vehicle accidents: Collisions, especially without proper seatbelt use, can cause severe facial trauma.
- Falls: Falling from a height or slipping and hitting the face on a hard surface.
- Sports injuries: Contact sports like boxing, football, hockey, or rugby can lead to facial fractures.
- Assault or physical altercations: Punches, kicks, or blows to the face with objects.
- Workplace accidents: Industrial accidents, falling objects, or machinery-related injuries.
- Bicycle or motorcycle accidents: Especially when not wearing a helmet.
- Pedestrian accidents: Being struck by a vehicle while walking or running.
- Recreational activities: Accidents during activities like skateboarding, skiing, or horseback riding.
- Gunshot wounds: High-velocity injuries can cause severe facial fractures.
- Domestic violence: Intentional harm leading to facial trauma.
Wearing protective gear, such as helmets and face shields, can significantly reduce the risk of these fractures in many scenarios.
Associated Symptoms
A displaced zygomatic bone fracture can cause a variety of symptoms, which may include:
- Facial swelling: Significant swelling around the cheekbone and under the eye.
- Bruising: Discoloration (black eye) due to blood pooling under the skin.
- Pain: Sharp or dull pain in the cheekbone, especially when touching or moving the face.
- Facial deformity: A visible dent, flattening, or asymmetry in the cheek or eye area.
- Difficulty opening the mouth: Limited jaw movement (trismus) due to muscle or bone displacement.
- Numbness: Loss of sensation in the cheek, upper lip, or around the eye due to nerve damage.
- Double vision or blurred vision: If the fracture affects the eye socket or muscles.
- Sunken eye (enophthalmos): The eye may appear recessed due to fracture displacement.
- Nosebleeds or bleeding from the ear: If the fracture extends to the sinuses or skull base.
- Difficulty breathing through the nose: Due to swelling or structural changes.
Symptoms can vary depending on the severity of the fracture and whether other facial bones are involved.
When to See a Doctor
You should seek medical attention immediately if you experience any of the following after facial trauma:
- Severe pain that doesn’t improve with over-the-counter pain relievers.
- Visible deformity or asymmetry in the face.
- Difficulty seeing, double vision, or changes in vision.
- Inability to open the mouth fully or pain with jaw movement.
- Persistent nosebleeds or bleeding from the ear.
- Numbness or tingling in the face that doesn’t go away.
- Signs of infection, such as fever, increased swelling, or pus.
Even if symptoms seem mild, it’s important to see a doctor to rule out complications like nerve damage, eye injuries, or sinus involvement.
Diagnosis
Diagnosing a displaced zygomatic bone fracture involves a combination of physical examination and imaging studies. Here’s what to expect:
Physical Examination
- The doctor will inspect your face for swelling, bruising, deformities, or asymmetry.
- They will gently palpate (feel) the cheekbone and surrounding areas to assess tenderness, instability, or crepitus (a grating sensation).
- Your doctor may check for numbness in the face, jaw movement, and eye alignment.
- They will evaluate your vision, pupil reactivity, and eye movements to rule out orbital injuries.
Imaging Tests
- X-rays: Provide a basic view of the fracture but may not show fine details.
- CT scan (Computed Tomography): The gold standard for diagnosing zygomatic fractures. A CT scan provides detailed 3D images of the bones, helping to assess displacement, involvement of the orbit, and other associated injuries. (Source: Mayo Clinic)
- MRI (Magnetic Resonance Imaging): Rarely used for bone fractures but may be ordered if soft tissue or nerve damage is suspected.
Based on these findings, your doctor will determine the best course of treatment.
Treatment Options
Treatment for a displaced zygomatic bone fracture depends on the severity of the fracture, the degree of displacement, and whether other structures (like the eye or sinuses) are affected. Options include:
Non-Surgical Treatment
- Pain management: Over-the-counter pain relievers like ibuprofen or acetaminophen. In some cases, prescription pain medication may be needed.
- Ice packs: Apply ice to the affected area for 15-20 minutes every hour to reduce swelling.
- Soft diet: Avoid chewing hard foods to prevent further discomfort or displacement.
- Nasal decongestants: If the fracture affects the sinuses, decongestants may help with breathing.
- Antibiotics: Prescribed if there’s a risk of infection, especially with open fractures.
Non-surgical treatment is typically reserved for non-displaced or minimally displaced fractures.
Surgical Treatment
Most displaced zygomatic fractures require surgical intervention to realign the bones and restore facial structure. Common surgical approaches include:
- Open Reduction and Internal Fixation (ORIF): The most common surgical treatment. The surgeon makes incisions (often inside the mouth or near the eyebrow) to access the fracture. The bones are realigned and held in place with titanium plates and screws. (Source: Cleveland Clinic)
- Closed Reduction: In some cases, the surgeon may manually realign the bones without open surgery, though this is less common for displaced fractures.
- Orbital Reconstruction: If the eye socket is involved, additional surgery may be needed to repair the orbital floor or walls.
Surgery is usually performed under general anesthesia, and recovery can take several weeks. Follow-up appointments are essential to monitor healing.
Post-Treatment Care
- Avoid strenuous activities or contact sports for at least 6-8 weeks.
- Follow a soft or liquid diet as recommended by your doctor.
- Keep the surgical site clean and dry to prevent infection.
- Attend all follow-up appointments to ensure proper healing.
- Report any signs of infection (fever, increased pain, redness, or discharge) immediately.
Prevention Tips
While not all zygomatic bone fractures can be prevented, you can reduce your risk by taking the following precautions:
- Wear protective gear: Use helmets, face shields, or mouthguards during sports, cycling, or high-risk activities.
- Drive safely: Always wear a seatbelt, and ensure children are properly restrained in car seats.
- Avoid distractions while driving: Texting, eating, or using a phone increases the risk of accidents.
- Prevent falls: Use non-slip mats, install handrails, and ensure proper lighting in your home.
- Address workplace hazards: Follow safety protocols and wear protective equipment at work.
- Avoid altercations: Seek conflict resolution strategies to prevent physical confrontations.
- Wear appropriate footwear: Shoes with good traction can prevent slips and falls.
- Educate children: Teach kids about safety during play and sports.
Taking these steps can significantly lower your risk of facial trauma and fractures.
Emergency Warning Signs
Seek immediate emergency medical attention if you or someone else experiences any of the following after facial trauma:
- Severe head or facial bleeding that doesn’t stop: This could indicate a major vascular injury.
- Loss of consciousness: A sign of traumatic brain injury (TBI).
- Clear fluid draining from the nose or ears: This could be cerebrospinal fluid (CSF), indicating a skull fracture.
- Severe eye injuries: Such as the eye being displaced, punctured, or unable to move.
- Difficulty breathing: Could indicate airway obstruction or severe swelling.
- Seizures or confusion: Signs of brain injury requiring urgent care.
- Severe pain not relieved by medication: Could indicate nerve damage or complications.
- Signs of stroke: Such as sudden weakness, slurred speech, or facial drooping (though rare, trauma can sometimes trigger stroke-like symptoms).
If any of these symptoms occur, call emergency services or go to the nearest emergency room immediately.
Note: This article is for informational purposes only and is not a substitute for professional medical advice. Always consult a healthcare provider for diagnosis and treatment.