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Spine

USE OF HIGH RESOLUTION ULTRASOUND IN DETECTING CONCOMITANT EXTRA-FORAMINAL PATHOLOGY IN PATIENTS WITH CERVICAL DISC DISEASE

Britspine, British Scoliosis Society (BSS), Society for Back Pain Research (SBPR), British Association of Spine Surgeons (BASS)



Abstract

Magnetic Resonance Imaging (MRI) is the cornerstone investigation for cervical disc disease (CDD). However, MRI changes suggestive of CDD are found in people above forty, even in asymptomatic healthy individuals [1].

Mere presence of MRI changes of CDD does not exclude the presence of concomitant extra-foraminal pathology.

No study design.

We present here a series of three cases where use of ‘high resolution ultrasound’ has allowed accurate diagnosis of concomitant extra-foraminal pathology in patients with MRI-proven CDD. The three cases were acute neuropraxia of aberrant C5 nerve root, anterior interossous nerve compression due to pseudo-aneurysm of brachial artery and ‘acute brachial neuritis’ respectively.

No outcome measure.

Use of diagnostic high resolution ultrasound revealed accurate diagnosis of concomitant extra-foraminal pathology in all three cases. The cases with acute neuropraxia and acute brachial neuritis recovered with conservative treatment. Pseudo-aneurysm was treated successfully with surgery.

High resolution ultrasound of the brachial plexus and peripheral nerves may be useful in following scenarios to identify an extra-foraminal pathology: (1) when symptoms and signs are out of proportion to the MRI findings of CDD; (2) when there is obvious discordance between MRI and nerve conduction findings; (3) where an entrapment neuropathy is suspected but the site of nerve lesion cannot be located.