Hyperextension injuries of the spine are MOST commonly the result of:

• A. Diving.
• B. Falls.
• C. Hangings.
• D. Compression.

Answer: (C)

Hyperextension injuries occur when the neck is forced to extend beyond its normal range, creating traction on the posterior elements of the cervical spine. This mechanism is classic in hanging, where the body’s weight can drive the head back and put a strong extension and traction force on the cervical spine. The result is injuries such as fractures of the pars interarticularis of C2 (the so-called hangman’s fracture) and other posterior cervical injuries due to that hyperextension/traction pattern.

Other mechanisms described—diving, which often involves axial loading and compression from a head-first impact; and falls, which can produce a variety of patterns including flexion or mixed injuries—do not as consistently produce the pure hyperextension pattern seen with hanging. That distinctive hyperextension mechanism makes hanging the best explanation for hyperextension injuries of the spine in this context.