Ulnar nerve
The ulnar nerve enters the hand through which anatomical passage at the wrist?
Guyon’s canal
What is the best treatment?
Rest
What is the key symptom that differentiates carpal tunnel syndrome from anterior interosseous nerve syndrome?
No loss of sensation or tingling in AINS
Both cubital tunnel syndrome and Guyon’s canal syndrome can cause similar sensory symptoms.
What anatomical feature distinguishes the two conditions?
The location of ulnar nerve compression — cubital tunnel at the elbow vs Guyon’s canal at the wrist.
What area are symptoms felt for Wartenberg Syndrome?
Dorsal radial hand
Which joints of which digits are primarily affected by anterior interosseous nerve syndrome?
The distal interphalangeal joints of the first and second digits
A patient has weakness of finger abduction and adduction following an ulnar nerve injury. Which group of muscles is primarily responsible for these movements, and why would an injury at the wrist potentially affect these movements?
The interossei. They are supplied by the ulnar nerve, which has reached the hand through Guyon’s canal, so compression of the nerve at the wrist can affect their motor supply.
What joint is affected in posterior interossesous nerve syndrome?
Metacarpolphalangeal
Why might weightlifters or physical labourers specifically have significantly higher risk of developing pronator teres syndrome?
Because they frequently utilise their pronator muscles (including pronator teres) in repeated motions, often with weight resistance (eg. lifting heavy objects)
The ulnar nerve is also known as the nerve that makes you want to scream when you hit your elbow. What is the common name for this spot?
The funny bone