US Constitution the words slave or slavery do not appear in the constitution yet they are certainly referred to it.   1. The 3/5 clause which says that an enslaved person will only count as 3/5 of a person in the census. 2. ban on middle passage slave trade.
Medial compartment arthritis (usually osteoarthiritis) can cause pain on the inner side of the knee. This is usually more of an ache than a sharp catching pain and is present when you walk on the leg. As the arthritis worsens the pain can become continuous and interfere with sleep.
Pain on the lateral side of the knee is the most common symptom of iliotibial band syndrome and is due to inflammation of the area where the band crosses back and forth at the femoral epicondyle. Initially, there may be a sensation of stinging or needle-like pricks that are often ignored.