The atlanto-occipital and atlanto-axial joints are joints in the spine that connect the cervical region to the base of the skull. The atlanto-occipital and atlanto-axial joints are common causes of neck pain and stiffness due to acceleration/deceleration injuries (e.g. whiplash) and arthritic damage, among other causes. Patients with conditions of the atlanto-occipital and atlanto-axial joints frequently present with neck pain, stiffness, and decreased range of motion in all three planes for flexion, extension, and lateral rotation.
Atlanto-occipital and atlanto-axial injections are procedures used for both diagnostic therapeutic purposes. The procedure is performed under fluoroscopic guidance and involves the placement of a small needle in the atlanto-occipital or atlanto-axial joint. A small aliquot of medication – either local anesthetic or corticosteroid – is then injected. For a diagnostic procedure, local anesthetic is administered and the patient’s response is carefully noted. If the patient reports greater than 80% pain reduction, then the atlanto-occipital or atlanto-axial joint is diagnosed as the source of pain. Typically, a second injection is performed to confirm the results of the first diagnostic injection. For a therapeutic procedure, a small amount of corticosteroid is injected, leading to anti-inflammatory and analgesic effects.
Atlanto-occipital and atlanto-axial joint injections are indicated for the following: