Popping Peroneal Syndrome, Ankle Popping / instability by Dr. Kevin Lam

Does your ankle pop, click, or feel like it is about to give out on the outside? That snapping sensation is often a sign of popping peroneal syndrome — peroneal tendon subluxation — in which the peroneal tendons slip out of their normal groove behind the outer ankle bone. In the video below, Dr. Kevin Lam explains what causes it and how it is treated.

Signs of Popping Peroneal Syndrome

1. Your ankle pops on the outside during certain movements
2. Pain on the outside of the ankle
3. A feeling that the ankle is unstable, like it could give way
4. Burning pain on the outer ankle
5. An audible popping sound when you roll the ankle
6. You can actually see the tendon rolling and popping over the bone

Why It Happens

The peroneal tendons are normally held in place by a band of tissue called the superior peroneal retinaculum. When that band is stretched or torn — frequently during an ankle sprain, or because of a naturally shallow groove behind the fibula — the tendons slip forward over the bone and snap back, the popping you feel. Left alone, the repeated movement frays the tendons and worsens ankle instability.

How It Is Diagnosed and Treated

We confirm the diagnosis with a hands-on exam and in-office diagnostic ultrasound, which lets us watch the tendons sublux in real time, plus imaging to rule out an associated fracture or tear. Mild or recent cases often respond to immobilization, bracing, activity changes, and physical therapy. When the popping and instability are chronic, surgery to repair the retinaculum — and deepen the groove if needed — reliably keeps the tendons seated and restores a stable ankle.

Get Your Ankle Evaluated

A popping, unstable ankle rarely fixes itself. Early care protects the tendon and prevents long-term instability and arthritis.

For more information or to schedule an evaluation with a board-certified foot and ankle specialist, call (239) 430-3668 (FOOT) or book online at NaplesPodiatrist.com.

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Serving Southwest Florida since 2005, Family Foot & Leg Center has 9 convenient locations throughout Collier, Lee, Charlotte, and Sarasota Counties — Naples, Estero, Fort Myers, Cape Coral, Port Charlotte, and Sarasota. We provide pediatric to geriatric foot and ankle care: ingrown toenails, heel pain, bunions, foot & ankle arthritis, plantar fasciitis, foot & ankle surgery, custom orthotics, and diabetic wound care — with in-office X-rays, diagnostic ultrasound, and minor surgical suites. Home of the Lam Minimally Invasive No-Scar Bunion Surgery. Same-day appointments and easy online scheduling.