It is a relatively common injury that occurs in high jumpers and those who jump a lot. This injury is a degenerative disease caused by traumatic strain in and around the inferior pole of the patellar tendon attachment point, which means that it is a chronic process of aseptic inflammation caused by repeated strain, so it is also called “patella terminal disease, high jumper’s knee, patellar tendon stopping point inflammation”. This injury has the same pathological process as the injury to Liu Xiang’s Achilles tendon. 1.Cause The knee joint extension is done by the quadriceps through the patella and patellar tendon, and the patellar tip is subjected to a large pulling force when jumping. The pain is located at the inferior pole of the patella, the pain increases when jumping, and the pain occurs when going up and down stairs and half squatting, the pain is weak and soft during the attack, the local pressure pain is obvious, the pain is red and swollen during the acute phase, the growth of the patellar tip and the thickening of the end of the patellar tendon can occur in those with a long history, most patients have experienced closure therapy, and the effect is remarkable, the auxiliary examination is not very specific. Most patients have had experience of closure therapy, with significant results, and the auxiliary examinations are not very specific. 3, treatment (1) conservative treatment: physiotherapy: cold compresses in the acute phase, and hot compresses in the chronic phase, with certain effects. Closure: Some scholars oppose repeated closure, because repeated closure has increased the chance of patellar tendon rupture, but the method is an immediate method, the effect is very good, if used properly, is also a good treatment method. There are also reports of treatment using small acupuncture and acupuncture, because I don’t know these treatments, I don’t dare to talk about their effects here. (2) Surgical treatment: non-surgical treatment after a long time, and the pain is obvious, affecting life can choose surgical treatment, mainly for the inflammatory site of the loosening, the inflammatory tissue will be removed, the general effect is better.