Zygomatic Arch Fracture: Causes, Symptoms, and Treatment

What is Zygomatic Arch Fracture?

The zygomatic arch, commonly known as the cheekbone, is a prominent facial bone that forms part of the eye socket and connects to the upper jaw. A zygomatic arch fracture occurs when this bone breaks, often due to trauma or injury. This type of fracture can affect facial symmetry, cause pain, and sometimes lead to complications like vision problems or difficulty opening the mouth.

Zygomatic arch fractures are a common type of facial fracture, often seen in car accidents, sports injuries, or physical altercations. According to the National Institutes of Health (NIH), they account for a significant portion of facial bone injuries due to the prominence of the cheekbone.

Common Causes

Zygomatic arch fractures typically result from direct trauma to the face. Common causes include:

• Motor vehicle accidents: High-impact collisions can cause facial injuries, including zygomatic arch fractures.
• Falls: Falling from a height or slipping and hitting the face on a hard surface.
• Sports injuries: Contact sports like boxing, football, or hockey increase the risk of facial fractures.
• Physical assault: Punches or blows to the face during altercations.
• Workplace accidents: Injuries from falling objects or machinery in industrial settings.
• Bicycle or motorcycle accidents: Even with helmets, facial injuries can occur.
• Recreational activities: Accidents during activities like skateboarding or skiing.
• Domestic accidents: Tripping or colliding with furniture or objects at home.

According to the Centers for Disease Control and Prevention (CDC), facial fractures are more common in males and young adults due to higher exposure to risky activities.

Associated Symptoms

Symptoms of a zygomatic arch fracture may vary depending on the severity of the injury. Common signs include:

• Facial pain or tenderness: Especially around the cheekbone or eye socket.
• Swelling or bruising: Visible swelling or discoloration around the cheek or under the eye.
• Facial deformity: A flattened or asymmetrical appearance of the cheek.
• Difficulty opening the mouth: Pain or limited movement when chewing or speaking.
• Numbness or tingling: Around the cheek, upper lip, or nose due to nerve involvement.
• Vision problems: Blurred or double vision if the fracture affects the eye socket.
• Bleeding: From the nose or mouth, especially if the fracture extends to the sinuses.
• Pain with jaw movement: Discomfort when moving the jaw or biting down.

In some cases, the fracture may not be immediately visible, so it’s important to seek medical evaluation if you suspect an injury.

When to See a Doctor

If you experience any of the following after facial trauma, seek medical attention promptly:

• Severe pain that doesn’t improve with over-the-counter pain relievers.
• Visible deformity or asymmetry in the face.
• Difficulty opening the mouth or chewing.
• Numbness or tingling in the face that persists.
• Vision changes, such as double vision or blurred vision.
• Persistent bleeding from the nose or mouth.
• Signs of infection, such as fever, increased swelling, or pus.

Early diagnosis and treatment can prevent complications like chronic pain, nerve damage, or vision problems.

Diagnosis

Doctors typically diagnose a zygomatic arch fracture through a combination of physical examination and imaging tests:

• Physical examination: The doctor will check for tenderness, swelling, deformity, and nerve function in the face.
• X-rays: To confirm the fracture and assess its location and severity.
• CT scan: Provides detailed images of the facial bones and surrounding structures, especially if the fracture is complex or involves the eye socket.
• MRI (in rare cases): Used if there’s suspicion of soft tissue or nerve damage.

The Mayo Clinic emphasizes that imaging is crucial for planning the appropriate treatment, especially if surgery is needed.

Treatment Options

Treatment for a zygomatic arch fracture depends on the severity of the injury. Options include:

Non-Surgical Treatments

• Pain management: Over-the-counter pain relievers like ibuprofen or acetaminophen, or prescription medications for severe pain.
• Ice packs: Applying ice to reduce swelling in the first 48 hours after injury.
• Soft diet: Eating soft foods to avoid straining the jaw.
• Rest: Avoiding activities that could worsen the injury.

Surgical Treatments

Surgery may be required for severe fractures or if the bone is displaced. Common procedures include:

• Open reduction and internal fixation (ORIF): The surgeon realigns the broken bone and secures it with plates or screws.
• Closed reduction: The bone is manually realigned without surgery, often used for less severe fractures.
• Reconstruction: If the fracture is complex, additional procedures may be needed to restore facial symmetry.

Recovery time varies but typically ranges from a few weeks to several months, depending on the treatment approach.

Prevention Tips

While accidents aren’t always preventable, you can reduce the risk of a zygomatic arch fracture by:

• Wearing seatbelts and using proper safety gear in vehicles.
• Using helmets and face guards during sports or recreational activities.
• Avoiding risky behaviors that could lead to falls or physical altercations.
• Ensuring workplace safety by following protocols and using protective equipment.
• Keeping walkways clear to prevent trips and falls at home.

The World Health Organization (WHO) recommends safety measures like helmets and seatbelts to reduce the incidence of facial fractures.

Emergency Warning Signs

Seek immediate medical attention if you experience any of the following after a facial injury:

• Severe headache or confusion, which could indicate a head injury.
• Loss of consciousness, even briefly.
• Severe bleeding that doesn’t stop with pressure.
• Sudden vision loss or severe eye pain.
• Difficulty breathing or swallowing.
• Signs of a skull fracture, such as clear fluid draining from the nose or ears.

These symptoms could indicate a life-threatening condition requiring urgent care.