2025, Vol. 7, Issue 2, Part C
Focused shockwave therapy for chronic ankle instability: A retrospective case series of 10 patients
Author(s): Christopher Lu and Sneha Sathe
Abstract: Background: Chronic ankle instability (CAI) is a disabling sequela of lateral ankle sprains, often requiring surgical reconstruction when conservative care fails. Few non-surgical modalities directly address both pain and instability.
Purpose: To evaluate the effects of focused shockwave therapy (FSWT), delivered according to ISMST guidelines, combined with balance rehabilitation in CAI patients, including those initially scheduled for surgical stabilization.
Study Design: Retrospective case series.
Methods: Ten patients (mean age 45 years) with CAI underwent five weekly FSWT sessions (5 Hz, 0.20 mJ/mm², 2000 shocks/session) using a Chattanooga focused shockwave device. Treatment was administered by an ISMST-certified therapist in accordance with ISMST guidelines, targeting the anterior talofibular ligament (ATFL), peroneal tendons, and muscle trigger points. Balance training began at week 4. Outcomes included pain (VAS), Lower Extremity Functional Scale (LEFS), ADL performance, and stability (anterior drawer, talar tilt). Patients were followed up at 3 and 6 months.
Results: All patients demonstrated significant improvements in pain, LEFS (mean gain 18 points, exceeding MCID), and clinical stability. Benefits were maintained at 3 and 6 months. Notably, two patients scheduled for ligament reconstruction cancelled surgery due to functional recovery. No adverse effects occurred.
Conclusion: FSWT delivered under ISMST standards, combined with rehabilitation, improved pain, function, and stability in CAI patients. Durable outcomes and avoidance of surgery in some cases highlight FSWT as a safe, effective, and surgery-sparing alternative.
DOI: 10.22271/27078345.2025.v7.i2c.275Pages: 141-144 | Views: 321 | Downloads: 155Download Full Article: Click Here
How to cite this article:
Christopher Lu, Sneha Sathe.
Focused shockwave therapy for chronic ankle instability: A retrospective case series of 10 patients. Int J Case Rep Orthop 2025;7(2):141-144. DOI:
10.22271/27078345.2025.v7.i2c.275