A fractured larynx is a break in one or more of the cartilages that form your voice box, the structure in your throat responsible for breathing, swallowing, and speaking. It’s uncommon, accounting for roughly 1 in every 11,000 emergency department visits and about 1 in 111 neck trauma cases evaluated with imaging. Despite its rarity, a laryngeal fracture is a serious injury because the larynx sits directly over your airway, meaning even a small amount of swelling or structural damage can make it difficult to breathe.
Anatomy of the Larynx
The larynx is built from a framework of cartilages, the two most important being the thyroid cartilage and the cricoid cartilage. The thyroid cartilage is the largest. It’s the one you can feel at the front of your neck, sometimes called the Adam’s apple. It’s made of a firm but somewhat flexible material called hyaline cartilage, and it serves as the front anchor point for your vocal cords.
Below the thyroid cartilage sits the cricoid, which is the only cartilage in the larynx that forms a complete ring around the airway. It’s shaped like a signet ring: narrow in the front (about 5 mm) and taller in the back (about 20 mm). Sitting on top of the cricoid are two small pyramid-shaped cartilages called the arytenoids. These connect to the back ends of the vocal cords and control their position, which is how you change pitch and volume when you speak. When any of these cartilages fracture, your ability to breathe, talk, and swallow can all be affected.
Common Causes
Blunt force trauma is the most frequent cause of laryngeal fractures. The largest review of blunt airway injuries found that motor vehicle collisions account for about 59% of cases, typically when a driver’s extended neck strikes the steering wheel, dashboard, or windshield. Sports injuries are another significant cause, particularly in contact or high-speed activities like ice hockey, basketball, and martial arts. Direct blows to the throat during an assault, crush injuries, and strangulation or hanging make up most of the remaining cases.
The larynx has some natural protection. It sits between the jawbone and the chest, and the surrounding muscles absorb some impact. In younger people, the cartilages are more flexible and resist fracture better. As you age, these cartilages gradually calcify and become more brittle, which is why older adults are more vulnerable to fracture from the same force.
Symptoms and Warning Signs
The hallmark symptoms of a fractured larynx include hoarseness or a changed voice, difficulty breathing, pain when swallowing, difficulty swallowing, neck pain at the front of the throat, and coughing up blood. Not all of these appear in every case, and the severity depends on how badly the cartilage is damaged.
Physical signs that point toward a laryngeal fracture include swelling in the front of the neck, a crackling sensation under the skin (caused by air leaking from the damaged airway into surrounding tissue), loss of the normal Adam’s apple contour, and a fracture you can feel when the neck is gently touched. Some people also develop noisy, high-pitched breathing called stridor, which signals that the airway is narrowing and needs immediate attention.
How Severity Is Graded
Doctors classify laryngeal injuries using a five-grade scale that guides treatment decisions:
- Grade 1: Minor bruising or small tears inside the larynx, with no detectable fracture.
- Grade 2: More significant swelling and bruising, possible small mucosal tears, or a fracture that hasn’t shifted out of position.
- Grade 3: Extensive swelling, large tears with exposed cartilage, fractures that have shifted, or a vocal cord that can no longer move.
- Grade 4: Same as Grade 3 but with greater structural destruction, including unstable fractures with two or more break lines or severe tissue damage to the front of the larynx.
- Grade 5: Complete separation of the larynx from the trachea (windpipe), which is a life-threatening emergency.
How It’s Diagnosed
The first priority after any suspected laryngeal injury is making sure the person can breathe. If the airway is compromised, a surgical opening in the neck (tracheostomy) or a breathing tube may be placed before any imaging is done.
Once breathing is stable, a CT scan of the neck without contrast dye is the standard imaging tool. It can reveal the bony and cartilaginous structures of the larynx in detail, picking up even small or nondisplaced fractures that might otherwise be missed. In one documented case, CT revealed a comminuted (multi-fragment) fracture of the thyroid cartilage with two fracture lines, along with a chip fracture of the cricoid that had pushed an arytenoid cartilage out of place.
A flexible laryngoscopy, where a thin camera is passed through the nose to look at the inside of the larynx, is often performed alongside the CT scan. This lets the medical team directly see swelling, tears in the lining, blood clots, and whether the vocal cords are moving normally. Together, these two tools give a complete picture of both the internal soft tissue damage and the structural cartilage injury.
Treatment by Severity
Lower-grade injuries (Grades 1 and 2) are typically managed without surgery. This means close monitoring in a hospital, keeping the head elevated, humidified air to reduce swelling, voice rest, and medications to control inflammation. The goal is to let the tissues heal on their own while watching carefully for any worsening of airway symptoms.
Higher-grade injuries (Grades 3 through 5) usually require surgery. The specifics vary by the nature of the fracture, but the general aim is to realign displaced cartilage fragments, repair torn tissue inside the larynx, and stabilize the framework so the airway stays open. In many cases, a temporary tracheostomy is placed to bypass the injured larynx and allow it to heal without the stress of airflow passing through it. The tracheostomy is typically removed once swelling has resolved and the airway is confirmed to be stable.
Timing matters. Early surgical repair, generally within the first 24 to 48 hours, tends to produce better outcomes for voice and airway function than delayed intervention.
Recovery and Long-Term Effects
Recovery depends heavily on the grade of injury and how quickly treatment begins. People with Grade 1 or 2 injuries often recover full voice and swallowing function within weeks. More severe fractures carry a higher risk of lasting complications.
Chronic hoarseness is one of the most common long-term effects, particularly when the vocal cords or the small arytenoid cartilages that control them were damaged. Some people develop narrowing (stenosis) of the airway at the injury site as scar tissue forms during healing, which can cause ongoing breathing difficulty and may require additional procedures to correct. Persistent difficulty swallowing or pain with swallowing can also linger after severe injuries, especially when the internal lining of the larynx was extensively torn.
Voice therapy with a speech-language pathologist is a standard part of rehabilitation for people whose voice doesn’t fully return on its own. For airway stenosis, procedures to widen the narrowed segment may be needed months or even years after the original injury.