C1 fracture

C1 fracture

A fracture which occurs with axial loading or axial loading + neck flexion, extension, lateral bending or axial rotation.

Clinical findings
C1F victims either die at the scene or present without neurologic deficit—e.g., neck stiffness, limited neck movement, suboccipital pain, muscle spasm, headache.
 
Imaging
Open-mouth odontoid views may show displacement of the lateral masses and are more useful than lateral views. Up to 25% of C1 fractures are missed on plain radiographs; a CT provides detailed visualisation of fracture(s).
 
Epidemiology
C1Fs are most common in the 2nd decade of life with a 2:1 male:female ratio, account for 4–15% of all cervical fractures and linked to MVAs/RTAs and falls; 40% are associated with C2 injuries.
 
Types of C1Fs
Posterior arch fracture, Jefferson fracture.

C1 fracture

Atlas fracture Orthopedics A fracture which occurs with axial loading or axial loading + neck flexion, extension, lateral bending, or axial rotation; C1Fs are most common in the 2nd decade of life with a 2:1 ♂:♀ ratio, account for 4-15% of all cervical fractures and linked to MVAs and falls; 40% are associated with C2 injuries Clinical C1F victims either die at the scene or present without neurologic deficit–neck stiffness, limited neck movement, suboccipital pain, muscle spasm, headache Imaging Open mouth odontoid views may show displacement of the lateral masses and are more useful than lateral views; up to 25% of C1 fractures are missed on plain radiographs; a CT provides detailed visualization of fracture(s) Types of C1Fs Posterior arch fracture, Jefferson fracture. See C1.
References in periodicals archive ?
It was a C1 fracture and not many people can actually walk around and tell you about it.
This approach is particularly indicated in patients with conditions that are refractory to conventional wiring techniques, patients with nonunion or delayed union of odontoid fractures with atrophic changes at the fracture site, patients with an associated C1 fracture, patients in whom laminectomy is required, patients with extreme atlantoaxial instability secondary to os odontoideum or rheumatoid arthritis, and patients in whom external immobilization is difficult or contraindicated.
10) Overall 34% of patients with C2 fractures have an additional spinal fracture, with C1 fractures the most common.