Outside Knee Pain in Runners
IT Band Syndrome
IT Band Syndrome is an overuse injury that is common in athletes including runners. The iliotibial band (IT band) is a long flat fibrous band that runs all the way down the outside of the thigh connecting the tensor fasciae latae muscle (originates in the pelvis) to the anterior tibia just below the knee.
Most muscle/tendon units are made up primarily of muscle with smaller tendon attachments. However, the tensor fasciae latae/IT band is an unusual musculotendinous pair because the muscle is very small as compared to the long length of the IT band.
Lateral Ligament Sprain
A lateral ligament sprain is a knee injury involving a tear to the ligament on the outside of the knee. Symptoms include:
- Pain on the outside of the knee.
- Swelling over the outside of the joint.
- Symptoms vary from mild pain to knee instability depending on the severity of the sprain.
Biceps Femoris Tendonitis
Biceps femoris tendonitis is an inflammatory or degenerative condition of the hamstring tendon located where it connects to the back of the knee. Symptoms may include:
- Tenderness and swelling at the insertion site of the tendon
- Stiffness in the affected area when first getting up or following an extended period of sitting.