Depending on the severity of your dislocation, you might be able to walk after the injury. Most people who experience a kneecap subluxation are able to walk even with the injury. It’s also possible to walk on a mildly dislocated kneecap. However, a dislocated kneecap can cause severe pain and instability, and many people are unable to walk until the kneecap is put back into the groove.