C1 Fracture

A fracture which occurs with axial loading or axial loading + neck flexion, extension, lateral bending, or axial rotation. C1 fractures 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 are linked to MVAs/RTAs and falls; 40% also have C2 injuries
Types 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 2^nd 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.

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Atlas Fracture C1 Jefferson fracture upper cervical spine injury	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. C1-C2 transarticular screw fixation for atlantoaxial instability by Robinson, J.S., Jr. / Southern Medical Journal	C-peptide suppression test C-peptide test C-PORT C-reactive protein C-reactive protein test c-section C-spine C-SPOMM c-src C-terminal C-type particle C-type virus c-v wave C. marginatum c.cm. C.D. C.D.X. c.g.s. c.mm. c.p.m. c.p.s. C/C/E C/O C/T ratio C1 C1 Fracture C1 INH C1 posterior arch fracture C1-inactivator C1q nephropathy C2 Fracture C3 C3 NeF C3 nephritic factor C6 oxidative pathway CA CA 125 CA 125 tumor marker test CA 15-3 CA 15-3 tumor marker test CA 19-9 CA 19-9 tumor marker test Ca 2 CA 27-29 CA 27.29 tumor marker test CA virus CA-125 Ca-EDTA Ca2+ Ca2+-ATPase Ca2±ATPase	C=pid C=pid C=pid C=pid C@R C^1 C\|N>K C\|net the Computer Network C’ao Gio C’ao Gio C’ao Gio C™te d'Ivoire Independence Day C° C° C0 C0 and C1 control codes C0-semigroup C0@mmission C0@mmisslons C0@mmon appendant C00 C02 C02 C02 C0mmon appurtenant C1 C1 C1 C1 C1 Fixation and Transfer C1 Fracture C1 INH C1 INH C1 INH C1 INH C1 inhibitor C1 inhibitor C1 inhibitor C1 inhibitor C1 posterior arch fracture C1 security C1-esterase deficiency C1-esterase deficiency C1-esterase deficiency C1-esterase inhibitor deficiency C1-esterase inhibitor deficiency C1-esterase inhibitor deficiency C1-inactivator C10 C100TIBET C10h22 C10h22 C11h24 C11h24 C12 C128 C128 C12H22O11 C12h26 C12h26 C13h16n2o2

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Atlas Fracture
C1
Jefferson fracture
upper cervical spine injury

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.

C1-C2 transarticular screw fixation for atlantoaxial instability by Robinson, J.S., Jr. / Southern Medical Journal