Firstkind – Firefly Ankle

firefly device

Firefly ANKLE Sprain Study



The device to be tested (firefly™) stimulates the common peroneal nerve and causes the foot to twitch, and has been shown to increase blood flow. The device is also indicated for the treatment of oedema. In this study the investigators intend to assess the use of the device as an adjunctive therapy for people recovering from grade 1 and 2 ankle sprains.

Primary Outcome Measures:

  • Oedema lower leg
  • FAAM ankle function measure

Secondary Outcome Measures:

  • Ankle proprioception
  • VAS Pain score
  • Adverse event rate


Poole NHS Trust Hospital link: