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.
The IT band is often the hidden cause of many people's outer knee or hip pain. Iliotibial band friction syndrome can cause a nagging, dull ache, or flare into a sharp, acute pain felt at a specific spot on the outside (lateral aspect) of the knee and lower thigh. For some athletes, a tight it band may cause hip pain as well.