BWH/Mass General Health Care Center 20 Patriot Place Foxborough, MA 02035 phone: 508-718-4035 fax: 508-718-4036
Orthopaedics at Mass General Waltham 52 Second Avenue Building 52, 1st Floor, Suite 1150 Waltham, MA 02451 phone: 617-726-7500 fax: 617-643-2030
Explore Peroneal Tendon Injury
Peroneal tendon tears generally occur after an injury - specifically rapid dorsiflexion of an inverted foot. Often a “pop” is heard or felt.
The peroneal tendons (peroneus brevis and longus) run along the outside of the ankle. They are held in place by the retinaculum. After injury, tears may occur to the tendons or to the retinaculum, and the tendons move out of place.
X-ray may see an avulsion off the distal tip of the lateral malleolus (fleck sign), but MRI scan is used for better evaluation of soft tissues.
Treatment may involve cast or boot immobilization, followed by PT, but surgery is often required for chronic dislocation (subluxation).