This overuse injury causes pain and inflammation within the tendon that connects the kneecap for the shinbone. It’s widespread in actions involving repetitive jumping, like basketball or volleyball. As a person ages, the synovial fluid (lubricant) dries up. This boosts friction in between the articulating cartilage surfaces from the knee https://www.theorthopaedicandpainpractice.com/non-surgical-treatments-for-knee-joint-pain/