Abstract
Proximal arm muscles include supra and infra spinatii, pectoralis major and minor, teres major and minor, rhomboids, serratus anterior, deltoids, biceps, and triceps. The main function of these muscles is to lift the arms. The first sign of proximal weakness is difficulty in raising the arms above a horizontal level. Shoulder conditions like supraspinatus tendonitis are often confused as proximal weakness. In myopathies, usually proximal arm weakness is associated with proximal leg weakness. Motor neuron diseases like ALS and SMA and neuropathies like CIDP may present with symmetrical proximal weakness. For differentiation, EMG/NCS is crucial.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.