Jumper's knee, also known as patellar tendonitis, is a condition in which your patellar tendon becomes inflamed. This is the joint that joins your kneecap (patella) to your shin bone (tibia). The jumper’s knee weakens your tendon and, if left untreated, can lead to tendon breaks
It is more common in athletes who participate in sports that require a lot of leapings, such as basketball and volleyball. Patellar tendonitis can affect persons who do not participate in jumping sports.
Causes
Overuse of the patellar tendon as a result of sports exercise.
Not giving the patellar tendon adequate time to rest between sessions
Symptoms
When you move, you feel pain beneath your kneecap.
Swelling
Bruising or skin redness
Knee stiffness while leaping, kneeling, or squatting
Leg or calf weakness
Knee pain when bending it
Classification based on symptoms
A jumper's knee can be divided into one of four phases based on the length of symptoms:
Stage 1: Pain that occurs exclusively after exercise, with little functional impairment.
Stage 2 - Pain during and after action, despite the patient's ability to participate in their sport successfully.
Stage 3: Prolonged discomfort during and after exercise, with increased difficulties functioning satisfactorily.
Stage 4 - A complete tendon tear that necessitates surgical correction.
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