The numb finger tips
The case of November was very specific for starting out… This is why we will keep it classical in December. Let´s start:
Your 43 year old female patient is quite upset about the tips of her left index and middle finger having been numb for some weeks.
She does not report any other symptoms.
In clinical examination you cannot detect anything apart from the described hypesthesia.
Obviously your suspected diagnosis is carpal tunnel syndrome.
You switch on your ultrasound machine and examine the median nerve at the wrist. During your examination you document the ultrasound video (from the palm of the hand proximal) and images below (images will enlarge when you click on them):
Can you now diagnose carpal tunnel syndrome? If yes, why?