Patellar tendonitis (jumper's knee) is by far the most frequent reported overuse injury in volleyball accounting for 60-80%. Patellar tendonitis is the third most common injury in volleyball representing 4-24% of all volleyball related injuries. Patellar tendonitis would be one of the main injury problems for volleyballers because jumping is so integral to the sport. Furthermore, elite players spend much of their practice time doing jump training, which includes plyometrics to increase vertical jump height.
The usual symptoms are anterior knee pain when jumping and landing, dull aching pain after sports participation which can progress to constant pain during activity and at rest, and "point" tenderness at the site of the damage.
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