Osteomalacia of the leg joint is a clinical diagnosis of osteoarthritis of the knee joint, which refers to strain, degeneration, and hyperplasia of the bones in the knee joint. In terms of specific treatment, the patient should be instructed to reduce the amount of activity or to rest in bed. Local brakes can be applied to the knee joint, or topical ointments can be applied to invigorate blood stasis, reduce swelling and pain, such as golden ointment or Fotarine spray. If osteoarthritis is combined with synovitis and there is an increase in joint fluid and joint swelling, intra-articular injection of sodium vitrate can be used to nourish the cartilage and synovial membrane, or the joint fluid can be artificially extracted and then given a local pressure bandage. The patient can also be instructed to take oral non-steroidal anti-inflammatory and analgesic drugs, such as oral celecoxib, which can relieve the symptoms. The patient should also be told to strengthen the knee muscles to enhance muscle strength and increase knee stability, which are both beneficial for the clinical improvement of osteoarthritis.