Trigger finger is a type of stenosing tenosynovitis. It develops due to repetitive microinjury from frequent flexion-extension movements of the fingers.

Primary trigger finger occurs most commonly in the middle fifth to sixth decades of life and up to 6 times more frequently in women than men.

A patient with trigger finger finds it difficult to straighten or bend the affected finger. The finger transiently gets locked in the flexed position and with a painful snapping sensation goes into extension.

Thickening and hyper-vascularization of the A1 pulley are the hallmarks of trigger fingers on sonography. Other frequently observed features include distal flexor tendinosis and tenosynovitis.

The first annular pulley (A1) at the metacarpal head is by far the most often affected pulley in trigger finger, though cases of triggering have been reported at the second and third annular pulleys (A2 and A3, respectively), as well as the palmar aponeurosis.

The level of thickening can be variable with some authors suggesting the normal value being around 0.5 mm with thickening suggested when the diameter is over 1.1 mm.

The condition can be conservatively managed with splinting, NSAIDs, and local steroid injections or may require a surgical section of the A1 pulley when the pulley is markedly thickened.

Member Login

Artikel Terbaru

07 Februari 2020
01 Februari 2020
01 Februari 2020
Hari ini
Minggu ini
Minggu lalu
Bulan ini
Bulan lalu
Semua Hari

IP anda:
2020-11-27 22:01
© 2017 All Rights Reserved.