Ultrasound-Guided Microinvasive Trigger Finger Release Technique Combined With Three Tests to Confirm a Complete Release

Am J Phys Med Rehabil. 2020 Dec;99(12):1150-1156. doi: 10.1097/PHM.0000000000001510.


Objective: Trigger finger at the A1 pulley is a common cause of hand pain leading to functional limitations. This study evaluated the outcomes of patients treated with a microinvasive ultrasound-guided trigger finger release technique using an 18 blade and described three tests that confirm a complete release.

Design: A retrospective chart review and cross-sectional study of 46 cases of A1 pulley trigger finger releases in 28 patients performed at a private, sports medicine clinic using this technique were completed, meeting power criteria. The primary outcome measure was the resolution of mechanical catching/locking; secondary outcome measures were reduction in visual analog scale for pain and improvement of function in the modified Nirschl scale.

Results: Complete release was achieved in all patients, with no recurrence of catching/locking during the first year (P < 0.0001). Ninety-eight percent of patients had significant pain and functional improvement (P < 0.0001). There were no complications perioperatively and postoperatively. The three confirmatory tests ensured that all cases obtained a successful outcome.

Conclusion: This technique combined with confirmatory tests resulted in full resolution of the locking for all patients and statistically significant reduction in pain and improvement in function.

MeSH terms

  • Aged
  • Cross-Sectional Studies
  • Female
  • Humans
  • Male
  • Middle Aged
  • Postoperative Complications / epidemiology*
  • Recovery of Function
  • Retrospective Studies
  • Treatment Outcome
  • Trigger Finger Disorder / diagnostic imaging
  • Trigger Finger Disorder / physiopathology
  • Trigger Finger Disorder / surgery*
  • Ultrasonography, Interventional*