Causes and Mechanisms - Hangman's fracture mainly occurs from falls in elderly adults and motor accidents with high-force impacts. - In a study in Norway, 60% of reported cervical fractures were from falls and 21% from motor-related accidents. - Elderly people aged 65-84 are at the highest risk of C2 fractures, with falls accounting for 61% and motor accidents for 21%. - Metropolitan areas have a higher prevalence of C2 fractures, with 94% of cases occurring in these areas. - Females account for 54.45% of C2 fractures, while males account for 45.38%. - Hangman's fracture is caused by forcible hyperextension of the head, usually with distraction of the neck. - It commonly occurs in judicial hangings, frontal motor vehicle accidents, falls, diving injuries, and contact sports. - Hangman's fracture is unstable but survival is relatively common. - Severe force can crush the spinal cord between the vertebral bodies of C3 and the posterior elements of C1 and C2. - Only a small minority of hangings produce a hangman's fracture.

Prevention - Car accidents can cause hangman's fracture when the chin slams against the steering wheel, dashboard, or windshield. - Not wearing a seat belt increases the risk of hyperextension injuries in car crashes. - Falling and colliding with others in contact sports can lead to hangman's fracture. - The weight of the body forces hyperextension during falls in contact sports. - Full-contact sports like American football and Rugby increase the risk of hangman's fracture due to diving for the ball and piling of players.

Treatment - Hangman's fracture can be treated with both non-surgical and surgical approaches. - Surgical treatment reduces the risk of complications such as pin site infections, brain abscesses, and loss of spinal alignment. - Anterior cervical fixation and fusion or posterior CT can be used for surgical treatment. - Fracture fusion decreases after one year, but the overall outcome is positive. - Operative treatment, such as transoral C2-C3 discectomy with plate-cage stabilization or posterior direct pars screw repair, aids in reducing and healing the fracture.

Epidemiology - C2 fractures account for nearly 19% of spinal fractures and 55% of cervical fractures in patients with head injury. - Hangman's fracture accounts for 23% of C2 fractures, while odontoid or dens fracture accounts for 55%. - In the US, there were 12,532 hospital discharges related to C2 fractures in 2010. - Mean healthcare costs for C2 fractures increased from $24,771 to $59,939 from 2000 to 2010. - The number of discharges for C2 fractures increased by almost 250% during the same period. - Hospital charges and the number of discharges for C2 fractures increased from 1998 to 2010 in the US. - In 2010, there were 12,532 discharged cases of C2 fractures, with a mean healthcare cost of $17,015. - The national bill or aggregate charges for C2 fractures in 2010 were $749,553,403. - Only 460 in-hospital deaths were related to C2 fractures. - The trend of hospital charges and discharges indicates an increasing burden of C2 fractures on the healthcare system.

Classification, Symptoms, and Diagnosis - ICD-10: S12.1 - ICD-9-CM: 805.02 - Trauma to the neck, high-impact accidents, sports injuries, falls from heights, and physical assault are causes of hangman's fracture. - Symptoms include neck pain, limited range of motion, numbness or tingling in the arms, weakness in the arms, and difficulty swallowing or breathing. - Diagnosis involves physical examination, X-rays of the cervical spine, CT scan or MRI, neurological evaluation, and evaluation of associated injuries. - Treatment includes immobilization with a cervical collar or brace, pain management with medications, surgery for severe cases, physical therapy and rehabilitation, and follow-up imaging to monitor healing progress.