The muscular components of the lower leg include the gastrocnemius, soleus, peroneus longus, tibialis anterior, extensor digitorum longus, and the achilles tendon.

Leg pain in older children or young adolescents can occur for many reasons. An Osgood-Schlatter lesion results from continued trauma to the anterior tibial bone and causes a visible lump below the knee.

Shin splints is the common name for the medical condition called medial tibial stress syndrome in which pain occurs along the tibia (shin bone) in the front of the lower leg. The pain is a result of small tears in the area the lower leg muscles' attachment to the tibia. Shin splints are typically caused from intense or vigorous athletic activity and can be resolved with adequate rest, stretching and modifying your exercise routine.

Varicose veins are enlarged, twisted, painful superficial veins resulting from poorly functioning valves. Varicose veins usually occur in the veins of the legs, although it may occur elsewhere. It is a common condition, affecting mostly women.

Retrocalcaneal bursitis is an inflammation of the bursa at the back of the heel bone. A bursa is a fluid-filled sac that acts as a cushion and a lubricant between tendons and muscles sliding over bone. Repetitive or over use of the ankle, by doing excessive walking, running, or jumping, can cause this bursa to become irritated and inflamed. Symptoms of bursitis include pain in the heel, especially with walking, running or when the area is touched.