Juvenile arthritis: This is rheumatoid arthritis, which causes pain, swelling, stiffness and loss of movement in joints, which may include the knee.The injury is caused by repeated contractions of the thigh muscle (such as running or jumping) during a period of growth. Sindling-Larsen Johansson syndrome: This is an injury to the growth plate at the bottom of the kneecap.This condition is more common in males and thought to be due to overuse of the muscles of the thigh. Osgood-Schlatter disease: This painful condition happens about an inch below the kneecap, where the patella tendon attaches to the bony raised area on the tibia (shin bone).Medical conditions that can affect your teen’s knee include: This is the out-of-place positioning of the kneecap. Bursitis: Swelling of one of the fluid sacs in the knee, which cushion the knee.Tendons of the knee include the quadriceps tendon (connects the front thigh muscles to the kneecap) and the patellar tendon (connects the kneecap to the tibia).

Tendonitis: Tendons become inflamed or irritated due to an injury.Ligament injuries: These are injuries to the anterior cruciate ligament (ACL), posterior cruciate ligament, lateral collateral ligament and medial collateral ligament.Meniscal tears: Cartilage between the upper leg bone (femur) and lower leg bone (tibia) tears.

Knee pain resulting from sprains, strains and tears to ligaments and tendons or injuries to other soft tissues.

Problems with alignment, for example, the kneecap not being properly aligned within the knee or having flat feet, which changes the normal gait.

Overuse of the knee from repetitive bending of the knee during running, jumping, and other activities.

Poor flexibility of the thigh muscles, which support the knee joint.

Improper training methods or equipment.

Abnormal hip rotation due to imbalances in muscle strength and flexibility around the hips.

Increased pressure on the knee joint is caused by:

Medical conditions that affect the knee.Īnterior knee pain happens when your teen’s kneecap is pulled out of its groove from increased pressure.

Injures to ligaments and tendons of the knee or to the kneecap itself.

Anterior knee pain, also called patellofemoral pain.

What are the causes of knee pain in teenagers?Ĭommon knee pain problems in your teenager can be generally divided into three types:

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