When to seek medical advice. 1  You experience bleeding or severe pain after an injury. 2  Bone or tendons are exposed. 3  The knee is visibly out of place. 4  There's sudden swelling or redness.  You can't bend your knee or put weight on it.
subject definition, subject meaning | English dictionary. subject. a the predominant theme or topic, as of a book, discussion, etc. 4 a person or thing that undergoes experiment, analysis, treatment, etc. 5 a person who lives under the rule of a monarch, government, etc.
1 Subject (grammar), who or what a sentence or a clause is about. 2  Subject case or nominative case, one of the grammatical cases for a noun. 3  Subjects (programming), core elements in the subject-oriented programming paradigm.  Subject (access control)