Randomized controlled study of ultrasound therapy in the management of acute lateral ligament sprains of the ankle joint.

OBJECTIVE

To determine the efficacy of a fixed dose of ultrasound energy to treat acute lateral ligament sprains of the ankle joint.

STUDY DESIGN

Double-blind randomised controlled trial.

SETTING

Accident and Emergency department of University Teaching Hospital.

SUBJECTS

Patients presenting at Accident and Emergency with ankle injuries.

INTERVENTION

Ultrasound or placebo, and Tubigrip.

OUTCOME MEASURES

Pain measured with visual analogue scales, swelling using a tape measure, range of movement using a fluid-filled goniometer, and weight bearing using two scales simultaneously.

RESULTS

Patients in both groups improved symptomatically. There were no statistically significant differences between groups in any outcome measure. Within groups, statistically significant differences were detected in pain perceived, and range of movement (dorsiflexion).

CONCLUSION

At the dose and duration used, ultrasound therapy is no better than placebo in the management of lateral ligament injuries.