trigger finger

Question 1

definition

Answer 1

relatively common condition characterised by abnormal flexion of the digits, caused by a disparity between the flexor tendon and the pulley that it passes through (i.e. the flexor tendon cannot pass through the pulley smoothly) most commonly affects the A1 pulley

Question 2

presentation

Answer 2

• initially causes a painful clicking sensation as the nodule catches on and passes underneath the pulley
• eventually the finger will lock in a flexed position as the nodule passes under the pulley but can’t go back -through on extension
• a nodule may be palpated at the base of the affected finger

Question 3

patients usually have to

Answer 3

forcibly manipulate their finger to regain extension

Question 4

which fingers are most commonly affected

Answer 4

the middle and ring finger

Question 5

management

Answer 5

• up to 3 steroid injections around the tendon sheath

- in persistent cases surgical division of the A1 pulley