Trigger finger -Quick revision card

Common condition - can cause sig functional impairment prevalence may be > 3 % in the general population 4th finger/ thumb- the most commonly affected by it can affect any finger Typically develops in 5th or 6th decade of life , women affected more than men ( 5-6 times ) Dominant hand is more commonly affected Diabetic patients are at greater risk ( nearing 10 % ) 4th most common reason for referral to hand surgeons

etiology is poorly understood pulleys hold the flexor tendons close to the finger bones inflammation & subsequent narrowing of the A1 pulley -starts to jam --> leading to bunching of the synovium ie the gliding movement is blocked by the osteofibrous canal of the A1 pulley preventing the tendon from gliding result is that the pulley is inflamed or thickened & the flexor tendon finds it harder to glide as the finger bends may also happen at A2 ( PIP jt ) or A3 ( DIP jt )

repetitive finger movements local trauma increased risk has been reported in patients suffering with carpal tunnel syndrome , de Quervain's disease , hypothyroidism , rheumatoid arthritis , renal disease & amyloidosis

finger gets locked / catches...