For the reasons (and more) stated by Jung
I also firmly believe that stretching will not directly reduce the chance of injury, and in some cases are the major cause of injury.
A strong muscle is a flexible muscle and visa versa.
Only proper exercise will achieve this and NOTHING else, whoever tells you the opposite are fools.
A muscle must be placed into a stretched position under load to initiate the stretch reflex, this can only be achieved wight proper exercise and without the negative component of exercise along with repitition, pre stretch is not possible.
if a muscle is weak it will limit movement.
someone with this issue will need to perform body weight movements until that person regains mobility, unfortunately many body movements don't allow for full stretch to full contraction.
Squats for example the thigh will not receive full extension in a half squat, (conventional) one would need to perform a full squat (ATG), which was very popular ten years ago, if you didn't squat ATG you weren't squatting, but what was happening was people where squatting too Heavy and so low that knee injuries where created by the calve pressing against the hamstring.
if you want healthy joints strengthen the muscles to improve the ROM.
ALL other methods are a complete waste of time.