What is the Green Classification of Trigger finger?
- Trigger finger is a Stenosing tenosynovitis caused by inflammation of the flexor tendon sheath, it happened mostly at the level of the A1 pulley.
- There are 5 Annular Pulleys (A Pulley) 3 Cruciform pulleys (C Pulley).
- The most two important A pulleys are A2 and A4 pulleys.
- Trigger finger is classified by Green into 4 grades:
|Grade I||Pain and tenderness at the A1 pulley.|
|Grade II||Catching of digit.|
|Grade III||Locking of digit; passively correctable.|
|Grade IV||Fixed, locked digit.|