Grade III (severe): A complete tear in your muscle that causes severe pain and swelling and you can't bear weight on that leg, making it difficult to walk. You've also lost more than 50 percent of your muscle function. These injuries are less common and may need surgery to repair the torn muscle. They can take several months or more to completely heal.
Some back pain is caused from a "ruptured disc". This pain is often experienced in the gluteal region of the body. Many people call this the "hip" region although it is not usually indicative of a hip joint problem. This is actually behind the hip, an important anatomic thought when considering hip pain, rather than in the hip itself. A condition related to degeneration of the lower back creating narrowing of the spinal canal or adjacent areas is called spinal stenosis and frequently causes pain in the hip region. The history of stenosis has to be compared with hip joint pain. Spinal stenosis can cause leg pain while walking as well as fatigue in the legs even when rising from a chair. Stenosis pain is relieved with sitting and will re-occur when walking is resumed.
The main work of your hip flexors is to bring your knee toward your chest and to bend at the waist. Symptoms associated with a hip flexor strain can range from mild to severe and can impact your mobility. If you don’t rest and seek treatment, your hip flexor strain symptoms could get worse. But there are many at-home activities and remedies that can help reduce hip flexor strain symptoms.