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There was thickening of the A1 pulley.
There was thickening of the A1 pulley. Normal pulley should be less than 0.5 mm in thickness, if it is more than 1-1.5 mm its considered abnormal. The A2, 3, 4 and 5 pulleys were of normal calibre. There was accompanying tendinosis of the flexor digitorum superficialis and profundus tendon complex at A1.
Findings were consistent with the clinical diagnosis of trigger finger and characterised and localised the source of the problem.