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Diagnosis of Os odontoideum using kinematic magnetic resonance imaging. A case report
T B Hughes1, J D Richman, W E Rothfus
1Department of Orthopaedics, Allegheny University of Health Sciences, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA.
Study Design:
A case of os odontoideum diagnosed using kinematic magnetic resonance imaging is presented.
Objectives:
To evaluate the kinematic magnetic resonance imaging findings of os odontoideum and the possible use these findings might have to guide treatment.
Background:
Kinematic magnetic resonance imaging is a new imaging modality that is able to produce realtime images of a structure through a range of motion. This makes it well suited for investigating dynamic processes such as cervical instability.
Methods:
A single subject with known os odontoideum was examined using a Sigma SPR Kinematic Magnetic Resonance Imager (General Electric, Florence, SC).
Results:
Kinematic magnetic resonance imaging demonstrated cervical spinal cord impingement and cervical instability throughout flexion and extension, but not during lateral bending or rotation.
Conclusions:
Kinematic magnetic resonance imaging can evaluate the cervical spine in an axially loaded position throughout its range of motion. This modality may be a useful method for diagnosing and classifying abnormalities of the spine.