Anatomical Study Of The Dorsal Cutaneous Branch Of The Ulnar Nerve Using Ultrasonography | 12291
OMICS Journal of Radiology
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To determine whether ultrasound allows precise assessment of the course and relations of the dorsal cutaneous
branch of the ulnar nerve (DCBUN).
This work, initially undertaken in cadavers, was followed by high-resolution ultrasound study in 20 healthy adult
volunteers (40 nerves) by two musculoskeletal radiologists in consensus. Location and course of the DCBUN, and its relations to
adjacent anatomical structures were analysed.
The DCBUN was consistently identified along its entire course by ultrasound. Mean cross-sectional area of the nerve
was 1.6 mm2 (range 1.1?2.2). The level at which the DCBUN branches from the ulnar nerve was located a mean of 57 mm (range
40?80)proximal to the ulnar styloid process, and 11 mm (range 7?15) radial to the medial border of the ulna. Then, the DCBUN
crossed the medial borderof the ulna a mean of 14 mm (range 6?25) proximal to the ulnar styloid process.
The DCBUN is clearly depicted by ultrasound. Precise mapping of its anatomical course could have significant
clinical applications, such as preventing injury during surgery of the ulnar side of the wrist, or helping in the diagnosis of chronic
pain of the ulnar side of the hand.
Salem Bauones has received his medical degree from King Abdulaziz University in Saudi Arabia. He is now a final year radiology resident at Aix
Marseille University in France. He will be board certified in diagnostic radiology in 2014 and then will do his fellowship in musculoskeletal radiology in
Montreal, Canada. He is particularly interested in MSK imaging, MSK interventional radiology and MSK researches. He achieved several diplomas
in the clinical applications of MRI, MSK imaging and imaging of sport pathologies.
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