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.
Lateral knee pain is pain that occurs on the outer side of the knee. It is the least common place to experience pain and there are a variety of causes. It may come on gradually over time or may develop suddenly after an injury. As a result, the symptoms are varied too.