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Jumper's Knee or Patellar Tendinitis
tendinitis (also spelled "tendonitis") typically presents as pain and tenderness at the site of the tendon - the sheath of tissue that links your muscle to your bone - just below the knee cap. One of the major differences between Jumper's Knee and Runner's Knee is the ability to pin-point the pain.
"Jumper's knee" is one example of patellar tendinitis, and is usually caused by inflammation of the tendon through overuse, direct injury or strain - or by a small tear in it. It is commonly caused by repetitive jumping, running, jogging, walking, bicycling, but any repetitive motion to the knee may cause patellar tendinitis. It may also result from the misalignment of the hips, legs and feet. Or may be caused by an inflammatory disease such as rheumatoid arthritis.
Symptoms include pain, swelling, tenderness and restricted movement of the knee - especially where the knee cap meets the shin at the front of the leg, though it can also occur behind the knee cap. Pain usually intensifies with activity and is often worse at night. If you suspect that you have this ailment, be sure to consult a doctor for a proper diagnosis and treatment recommendations.
Tendinitis is typically treated by application of the R.I.C.E. protocol (Rest, Ice, Compression, and Elevation) by wearing a patellar strap, stabilizing the knee with a brace, and though the use of antinflammatory medications. Once past the acute stage, the tissues in and around the tendon may be rehabilitated by exercise and physical therapy. Properly warming up before exercise and providing support to the knee when active, and not overusing the knee may help prevent such injuries.
Preventive measures include wearing proper - and properly fitting - footwear for the activity you are engaged in, a patellar strap or knee brace, wearing orthotics to support your arches, and warming up before exercise.
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