Senol Apaydın, MD
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senolapaydin.bsky.social
Senol Apaydın, MD
@senolapaydin.bsky.social
Neurologist | Switzerland
Emergency Department | Stroke |
Neurovascular Ultrasound | Nerve and Muscle Ultrasound | ENMG | Botuliniumtoxin
Vienna - Zurich - Basel
AANEM Web Lectures on all things ENMG:

youtube.com/playlist?lis...
Lessons from the Lab - YouTube
youtube.com
April 18, 2025 at 8:16 PM
The location of a AIN neuropathy in a Parsonage Turner Syndron is usually at the level of the upper arm:

pubmed.ncbi.nlm.nih.gov/29461642/
December 7, 2024 at 12:41 PM
Neurology 🖐️
November 25, 2024 at 7:04 PM
Back to AIN: Work-up:
1 ENMG
2 Neuromuscular Ultrasound (check for a enlarged nerve)
3 and or MRI

AIN is located in the lower arm, but the pathology is usually a fascicle of the median nerve at the upper arm (check for the lesion with the ultrasound at the upper arm 😉)
November 22, 2024 at 6:46 AM
So, PA not only as a "Plexusneuritis", can present as a multiplex pattern or mononeuropathy or as pure sensory as well.
November 22, 2024 at 6:46 AM
Usually affected in the context of a Parsonage Turner (PA):
PA ("Plexusneuritis") commonly at the upper plexus, monophasic, painful onset, later with atrophy (ie scapular winging), motor >>sensory

Most common nerves in PA:
Thoracic longus
Supra-/ Infraspinatus
AIN
PIN
November 22, 2024 at 6:46 AM
November 21, 2024 at 10:26 PM
ENMG work-up:
1 APB motor and sensory plus f-waves
2 ADM motor and sensory plus f-waves (DD PNP)
3 Radial sensory (DD Plexus)
(4 Pronator quadratus motor DD AIN)
November 21, 2024 at 10:23 PM
If any other median hand muscle is affected?

Flexor digitorum profundus II/III and Flexor pollicis longus are supplied by the AIN (proximal median neuropathy). Not affected in CTS. AIN usually in the context of a Parsonage Turner Syndron. AIN has no sensory branch, thus no sensory impairment.
November 21, 2024 at 10:23 PM
Motor: Weakness of the LOAF muscle

Lumbricalis
Opponens pollicis
Abductor pollicis brevis (APB)
Flexor pollicis brevis

Usually the APB is tested. No other muscle but the LOAF muscle is involved in CTS.
November 21, 2024 at 10:23 PM
So true! I used to listen in while preparing for the boards 🤓
November 17, 2024 at 4:56 PM
Stroke Guidelines 2024, Bern
neurologie.insel.ch/fileadmin/Ne...
neurologie.insel.ch
November 17, 2024 at 9:22 AM
Neurology Exam Prep Podcast:
www.buzzsprout.com/798455
Neurology Exam Prep Podcast
Study materials for in-service and certification examinations in neurology residency.
www.buzzsprout.com
November 16, 2024 at 9:51 PM
November 16, 2024 at 9:51 PM
November 16, 2024 at 9:51 PM
November 16, 2024 at 9:51 PM