Atlantoaxial instability

Atlantoaxial instability

This is defined as non-physiological movement between C1 and C2. It can be translational or rotatory and resolves either spontaneously or with traction followed by a cervical collar. Isolated, traumatic transverse ligament rupture leading to C1/2 instability is uncommon and is treated with posterior C1/2 fusion ( Figure 30.26 ). Atlantoaxial instability

This is defined as non-physiological movement between C1 and C2. It can be translational or rotatory and resolves either spontaneously or with traction followed by a cervical collar. Isolated, traumatic transverse ligament rupture leading to C1/2 instability is uncommon and is treated with posterior C1/2 fusion ( Figure 30.26 ). Atlantoaxial instability

This is defined as non-physiological movement between C1 and C2. It can be translational or rotatory and resolves either spontaneously or with traction followed by a cervical collar. Isolated, traumatic transverse ligament rupture leading to C1/2 instability is uncommon and is treated with posterior C1/2 fusion ( Figure 30.26 ).