When you use a set of muscles too much, you’re likely to strain the tendons (soft tissues) that connect those muscles to your bones. At first, pain or swelling may come and go quickly. But if you do too much too soon, your muscles may overtire again. The strain may cause a tendon’s outer covering to swell or small fibers in a tendon to pull apart. If you keep pushing your muscles, damage to the tendons adds up, and tendonitis develops. Over time, pain and swelling may limit your activities. But with your doctor’s help, tendonitis can be controlled. Both your symptoms and your risk of future problems including tendon rupture can be reduced.
The back of your foot
The Achilles tendon connects the calf muscle to the heel bone. If tendonitis occurs here, you may feel pain when your foot touches down or when your heel lifts off the ground.
The front of your foot
The anterior tibial tendon helps control the front of your foot when it meets the ground. If this tendon is strained, you may feel pain when you go down stairs or walk or run on hills.
The inside of your foot
The posterior tibial tendon runs along the inside of the ankle and foot. If this tendon is strained, your foot may hurt when it moves forward to push off the ground. Or you may feel pain when your heel shifts from side to side.
The outside of your foot
The peroneal tendon wraps across the bottom of your foot, from the outside to the inside. Tendonitis here may cause pain when you stand or push off the ground and when walking on uneven surfaces.
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