Abstract
Peripheral neuropathies of the shoulder are common and could be related to traumatic injury, shoulder surgery, infection or tumour but usually they result from an entrapment syndrome. Imaging plays an important role to detect the underlying causes, to assess the precise topography and the severity of nerve damage. The key points concerning the imaging of nerve entrapment syndrome are the knowledge of the particular topography of the injured nerve, and the morphology as well signal modifications of the corresponding muscles. Magnetic Resonance Imaging best shows these findings, although Ultrasounds and Computed Tomography sometimes allow the diagnosis of neuropathy.
Highlights
Peripheral neuropathies of the shoulder are common and represent an important cause of morbidity and disability in patients. They could be related to traumatic injury, shoulder surgery, infection or tumour, but usually they result from an entrapment syndrome, a condition in which the nerve is stretched into an incompressible space [1]
All the nerves of the shoulder could be affected, we will focus our topic on the major nerves that could be involved in this area, principally suprascapular nerve, followed by the axillary, musculocutaneous, spinal accessory and long thoracic nerves
The key points concerning the imaging of nerve entrapment syndrome are the morphology and the signal changes of the innervated muscles, best demonstrated by Magnetic Resonance Imaging (MRI)
Summary
Peripheral neuropathies of the shoulder are common and could be related to traumatic injury, shoulder surgery, infection or tumour but usually they result from an entrapment syndrome. Imaging plays an important role to detect the underlying causes, to assess the precise topography and the severity of nerve damage. The key points concerning the imaging of nerve entrapment syndrome are the knowledge of the particular topography of the injured nerve, and the morphology as well signal modifications of the corresponding muscles. Magnetic Resonance Imaging best shows these findings, Ultrasounds and Computed Tomography sometimes allow the diagnosis of neuropathy
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