A combination of factors may contribute to the development of patellar tendinitis, including:

  • Intensity and frequency of physical activity. Repeated jumping is most commonly associated with patellar tendinitis. Sudden increases in the intensity of physical activity or increases in frequency of impact activity also put added stress on the tendon.
  • Tight leg muscles. Reduced flexibility in your thigh muscles (quadriceps) and your hamstrings, which run up the back of your thighs, could increase the strain on your patellar tendon.
  • Muscular imbalance. If some muscles in your legs are much stronger than others, the stronger muscles could pull harder on your patellar tendon. This uneven pull could cause tendinitis.
Mar. 07, 2012

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