Chondromalacia Patellae
Chondromalacia patellae is damage to the cartilage under the kneecap (patella).
Chondromalacia patellae typically develops in adolescents. Joggers are especially susceptible. The cause is probably a minor, repetitive injury resulting from misalignment of the kneecap. The misalignment causes the cartilage on the underside of the kneecap to grate against other bones when the knee bends.
Dull, aching pain is felt all around and behind the knee. Climbing, especially going up or down stairs, and running usually worsen the pain. Prolonged sitting may also worsen the pain. A doctor makes the diagnosis based on the symptoms and physical examination and may recommend exercises to strengthen the quadriceps muscles, which straighten, or extend, the knee joint. Increasing knee flexibility with stretching exercises helps. Activities that worsen the pain should be avoided. Analgesic or nonsteroidal anti-inflammatory drugs (NSAIDs), such as ibuprofen or naproxen, can help relieve symptoms.
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