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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_X | Pages 89 - 89
1 Apr 2012
Nath C Chen Y Wilder-Smith E Kumar N
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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.