You can try simple physical therapy: fry a catty of edible salt, add 50 grams of shredded ginger, wrap it in cotton cloth and heat the affected area, which will have a good effect. Another method is to soak the affected part with hot light salt water for 20 minutes, which is beneficial to eliminate the potential problems of tissues and cells. After the symptoms are relieved, exercise quadriceps femoris as soon as possible to restore the function of knee joint. Surgical treatment of recurrent diseases.
Recommended for boxers here is Feng Zhiqiang's 1992 Introduction to Chen Tai Ji Chuan. In the past, this website has reposted some chapters and has been wide