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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:

Extensor Tendon Injury of the Hand

Extensor tendon injury of the Hand is among the most common presented injuries to the ER. The most common injured finger is the long (third) finger. Read More

Green Classification of Trigger finger

In Green classification, the trigger finger condition is classified into 4 grades, begin with pain and end with locked finger in flexion position:

GradeDescription
Grade IPain and tenderness at the A1 pulley.
Grade IICatching of digit.
Grade IIILocking of digit; passively correctable.
Grade IVFixed, locked digit.
Green Classification of Trigger finger
Trigger finger Classification

De Quervain Tenosynovitis

De Quervain Tenosynovitis is a stenosing tenosynovitis of the abductor pollicis longus and extensor pollicis brevis tendons at the 1st dorsal compartment of the wrist. It was first described by Fritz de Quervain in 1895.. Read More

De Quervain Tenosynovitis

References & More

  • Millers Review of Orthopaedics -7th Edition Book.
  • Merry SP, O’Grady JS, Boswell CL. Trigger Finger? Just Shoot! J Prim Care Community Health. 2020 Jan-Dec;11:2150132720943345. doi: 10.1177/2150132720943345. PMID: 32686570; PMCID: PMC7372603.
  • Green D, Hotchkiss R, Pederson W, Wolfe S. Green’s Operative Hand Surgery. 5th ed. Churchill Livingstone; 2005.
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