Numerous conditions can cause lateral foot pain. According to the University of Michigan Medical School, the lateral aspect of the foot--the side of the foot that faces away from the body--is comprised of bones, muscles, tendons and connective tissue. The lateral foot is a common location for foot pain. Lateral foot pain ranges from mild to severe, depending on the cause and the location of the problem. Numerous tissue types can be pain generators in the lateral foot.
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Cuboid syndrome can cause lateral foot pain. According to the Sports Injury Clinic, cuboid syndrome occurs when the peroneus longus--a long, thin muscle in the lateral compartment of the leg--applies too much traction on the cuboid bone, causing it to partially dislocate. The block-like cuboid bone is one of seven tarsal bones in the foot. It's located on the lateral side of the foot, and it forms joints with several other foot bones. Common signs and symptoms associated with cuboid syndrome include pain in the lateral part of the foot during weight bearing activities, a coexisting ankle inversion sprain and significant overpronation or a rolling inward of the feet and ankles. The Sports Injury Clinic website states that effective treatment methods for cuboid syndrome include manipulation of the cuboid back into position and treating peroneal tendinitis, which may occur in conjunction with a partially dislocation cuboid.
An ankle inversion sprain can cause lateral foot pain. The American Academy of Podiatric Sports Medicine states that an inversion sprain is characterized by damage to the anterior talofibular and calcaneofibular ligaments--important ligaments on the outside aspect of the ankle. The degree of damage varies from person to person based on the forces involved in the injury. In some cases, the injured ligaments and connective tissue may suffer a mild stretch, while in other cases, the ligaments may partially or completely tear. According to the AAPSM, common signs and symptoms associated with an inversion sprain include pain in the lateral ankle and foot, an audible pop or snap heard at the time of injury and an inability to bear weight on the injured ankle. Initial treatment of the injury with rest, ice, compression and elevation to reduce pain and swelling is appropriate within the first 24 to 48 hours following injury.
Tarsal coalition can cause lateral foot pain. According to Foot Health Facts, tarsal coalition is an atypical bony, cartilaginous or fibrous connection or bridge between two tarsal bones. The tarsal bones--calcaneus or heel bone, talus, navicular, cuboid, and three cuneiform bones--are located at the back of the foot. In most cases, tarsal coalition occurs during fetal development, causing the tarsal bones to form improperly. Other possible causes of tarsal coalition include infection, inflammatory joint diseases such as arthritis and previous trauma in the affected area. Common signs and symptoms associated with tarsal coalition include lateral foot pain when walking, leg fatigue, leg muscle spasms, flat feet, a noticeable limp during gait and foot and ankle stiffness. Reduced active range of motion in the involved segments is another sign or symptom associated with this condition.