Ultrasound-guided minimally invasive trigger finger release in a Chinese population

Trigger finger release (TFR) is a commonly performed hand surgery procedure. Ultrasound-guided TFR offers a minimally invasive release while ensuring clear visualization under real-time imaging. This study aims at investigating the effectiveness and safety in patients who received such surgery. Patients who received ultrasound-guided minimally invasive TFR at a university hospital operated by a single surgeon between June 2023 and May 2024 were reviewed retrospectively. Primary outcome was incidence of residual triggering and extension lag. Changes in QuickDASH score, pain scale and number of hand therapy sessions were also recorded as secondary outcome. 14 patients with 16 operated digits were included in the study. Mean age was 67.6 ± 10.4 years and 64.3 % were female. Operated digits ranged from grade 1 to 4 triggering. None of the patients reported residual triggering after surgery. There was improved but residual flexion contracture noted in 4 digits post-operatively. No digital nerve injury was observed. All patients reported reduction in pain (mean visual analogue scale reduction 5.1 ± 2.8) and demonstrated improvement in QuickDASH score (mean reduction 21.4 ± 14.3). Patients received on average 2.7 ± 1.4 sessions of physiotherapy and 2.9 ± 2.6 sessions of occupational therapy over a period of 4.9 ± 4.7 weeks before they were discharged. Minimally invasive TFR under ultrasound guidance is safe and effective in improving the symptoms of triggering and pain. However, residual extension lag after release is not uncommon in this cohort of patients, especially in grade 4 triggering.