In other words: A Permutation is an ordered Combination. There are basically two types of permutation: 1  Repetition is Allowed: such as the lock above. It could be 333.  No Repetition: for example the first three people in a running race. You can't be first and second.
For this reason, the idea that collagen supplementation can be an effective treatment for joint pain, osteoarthritis, or any other condition, is highly implausible, if not impossible in principle.
Rooster Comb Injections contain hyaluronic acid (Hyaluronan) and are injected into the knee joint to provide lubrication and relief from osteoarthritis symptoms. The treatment method is also known as viscosupplementation.