Sesamoiditis

Sometimes known as the “ball bearings of the foot,” the sesamoids are two small bones found beneath the first metatarsal bones. They can inflame or rupture under the stress of exercise. Sesamoiditis can be relieved with proper shoe selection and orthotic devices, or shoe inserts.

Sesamoids provide a smooth surface over which the tendons slide, thus increasing the ability of the tendons to transmit muscle forces. The sesamoids in the forefoot also assist with weight-bearing and help elevate the bones of the great toe. Like other bones, sesamoids can fracture. Additionally, the tendons surrounding the sesamoids can become irritated or inflamed. This is called sesamoiditis and is a form of tendinitis, and is common among ballet dancers, runners and baseball catchers.

Symptoms include:

• Pain under the big toe or on the ball of the foot.
• Swelling and bruising.
• Difficulty and pain in bending and straightening the big toe.

Surgery is usually not required to treat sesamoiditis. Over-the-counter anti-inflammatory medications, as well as rest and ice the sole of your feet, usually relieve the pain. Consult your physician before taking any medications.