Just a thought.....I am wondering if this could be a mechanical issue and not a "hurt" leg. Since I have not had an "injured" leg with my RB, I am wondering how you know the difference. One would think that if you touched the sensor on the outside of the leg, the RB would make some sort of sound indicating pain if it was an "injured" leg. If it was a mechanical issue, the RB would be fine when you touched the sensor, as it would not know it was in "pain." Being that it may take several battery cycles to heal an injured leg, maybe there is a way to tell which it is? Someone with more experience might be able to fill you in, if this is the case.