You will be given a definition of a task first, then some input of the task.
Given an abstract, generate a keyword (a noun phrase) that best describes the focus or contribution of the paper. Such keywords can be directly from the given abstract or outside it.

Abstract: The paper describes physical examination of the knee and some of the knowledge functional anatomy necessary for diagnosis and management of knee disorders that occur in children. It includes brief descriptions of the diagnostic features of these conditions, as well as principles of conservative and surgical management.
Output:
Cartilage Diseases