The peroneal retinaculum is a thin band of tissue that helps hold the peroneal tendons behind the fibula at the outside of the ankle. There are actually two distinct peroneal retinaculums; the “superior peroneal retinaculum” and the “inferior peroneal retinaculum.” The one you actually care about if you’re having popping and clicking and pain at the outside of the ankle is the superior peroneal retinaculum.
Neuritis is simply pain resulting from an irritated nerve. The sural nerve is one of the five nerves that crosses the ankle and then provides sensation to the foot. The sural nerve travels down the back of the leg along the Achilles tendon and crosses over to the back of the fibula (outside or “lateral” ankle bone) before it curves down along the heel and proceeds out to the little toe. The sural nerve only provides sensation to a small area along the outside of the foot and the 4th and 5th toes.
All About Peroneal Tendon Problems A tendon is a structure that is the body’s equivalent of a cable. But instead of steel wire, thin collagen strands bundle together and connect muscle to bone. The peroneal tendons are frequently injured in runners and triathletes. They are also commonly injured during an ankle sprain. The result is pain in the outside of the ankle or foot.
An ankle sprain is an injury to one or more ligaments in the ankle,usually on the outside of the ankle. Ligaments are bands of tissue—like rubber bands—that connect one bone to another and bind the joints together. In the ankle joint,ligaments provide stability by limiting side-to-side movement.