Herniated lumbar discs can be treated with general therapy, medication, physical therapy and surgery depending on the specific cause. Sore knees after minimally invasive surgery may be caused by surgical and non-surgical reasons. 1. Surgical causes: knee pain after minimally invasive surgery for lumbar disc herniation is commonly caused by postoperative local nerve edema or bleeding to form hematoma, which can be relieved by acupuncture, physical therapy, oral ibuprofen and other anti-inflammatory and pain relieving drugs, and nutritive drugs such as methylcobalamin to alleviate the symptoms of pain and soreness. If conservative treatment is ineffective, surgery can be considered to remove the local hematoma. 2. Non-surgical causes: causes of postoperative knee pain can also be seen in the knee joint itself, such as synovitis, osteoarthritis, meniscus injury, chondromalacia patella, chondromalacia and so on. Depending on the specific condition, medication, physical therapy or surgery can be chosen. If you have knee pain after surgery or the symptoms are not relieved, it is recommended to consult a doctor in time, with the help of the doctor to clarify the cause of the disease, and to carry out targeted treatment or therapy, and medication should be applied in accordance with the doctor’s instructions, so as not to cause adverse consequences.