Type:
Educational Exhibit
Keywords:
Musculoskeletal joint, Musculoskeletal soft tissue, Neuroradiology peripheral nerve, MR, Education, eLearning, Oedema, Inflammation, Education and training
Authors:
E. Rossetto1, P. Schvartzman2, V. N. Alarcon2, M. E. Scherer2, D. M. Cecchi3, F. M. Olivera Plata4; 1Buenos Aires, Capital Federal/AR, 2Buenos Aires/AR, 3Capital Federal, Buenos Aires/AR, 4Ciudad Autonoma de Buenos Aires/AR
DOI:
10.1594/ecr2018/C-2059
Background
We performed a retrospective analysis of patients with shoulder muscle denervation in our institution with 1.5/3T MRI between the years 2014 and 2017,
correlating the radiological findings,
nerve compromise and etiology.
Peripheral nerve injury associated with muscular denervation is an uncommon cause of shoulder pain and could lead to mislead to other pathologies with similar clinical presentation.
The knowledge of the brachial plexus anatomy and the suprascapular and axillary nerve path are critical in order to understand the correlation of the denervated muscle group with the compromised nerve and the possible location of its injury.
The nerves most commonly affected are the suprascapular and axillary.
Sensorimotor nerve that arises from the upper trunk of the brachial plexus,
with is originate by C5 and C6 roots,
with variable contribution from C4.
Supplies motor branches to the supraspinatus and infraspinatus,
receiving sensory branches fron glenohumeral and acromioclavicaular joints,
rotator cuff and posterior two thirds of the capsule.
Sites of entrapment include the suprascapular notch and the spinoglenoid notch.
Arises from the posterior trunk of the brachial plexus,
formed by C5 and C6 roots.
Supplies teres minor muscle and anterior and middle parts of deltoid muscle.
Sites of entrapment include the quadrilateral space and the area anteroinferior to the glenohumeral joint.