It is impossible to recover from patellar wear and tear. This is because patellar wear will lead to degeneration and smoothing of the articular cartilage, which over time will lead to calcification and hyperplasia, narrowing of the joint space and gradual appearance of osteoarthritis, which will not return to its former condition even with various treatments. Patellar wear is commonly associated with chondromalacia patellae and osteoarthritis of the knee, for which prevention should be the main focus, that is, when the cartilage has not yet degenerated, calcification and hyperplasia have not yet formed when treating the knee joint, you can take oral anti-inflammatory and analgesic drugs to control local inflammation, apply blood circulation, reduce blood stasis, swelling and pain medication to reduce local inflammatory edema, increase blood circulation. For unfavorable joint movement, intra-articular injections of sodium vitreous acid can be given to lubricate the knee joint, which can effectively prevent cartilage wear and tear as well as calcification and hyperplasia. In addition, oral glucosamine hydrochloride can be taken to effectively inhibit cartilage degeneration and prevent the appearance of osteoarthritis.