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Most common injuries happen because your aerobic fitness improves before your neuromuscular fitness does. You aerobically can run faster, but your bones/muscles/tendons/etc can’t handle running faster yet.
This is actually one (of many) reasons many running minds oppose tempo running. You’re often asking a lot from your body’s structure before it’s built up strength to handle it. While I don’t consider that a damning argument against tempo running, that’s a valid point.
This is also a key reason most recommend you do most of your running at an easy pace. You may be aerobically able to run faster, but that doesn’t necessarily mean your body is ready to run faster. The best way to help your body build the strength to run faster over time is to ask it to run a lot, rather than to ask it to run faster.
The high volume of lower stress running builds the strength and endurance that will facilitate faster running later. Obviously it’s still a good idea to do some faster running, but not too much.
If you struggle with shin splints, IT band issues, knee/ankle/hip problems or muscle injuries… you may want to keep running, but slow way down.
You also will want to work on your form and make sure you’re not slamming your feet into the ground, unnecessarily torqueing your body or bearing weight on your joints, etc. This is to some extent a contributing factor to recurring injuries.
But for the most part, your recurring injuries are from running too hard too much too soon as your aerobic fitness grows ahead of your neuromuscular fitness.
If you want more info on the relationship between aerobic and neuromuscular fitness, the book Build Your Running Body is a great all-around running resource for this and other subject. It’s definitely worth a look.