I think that Handball is quite a rough sport, you get pushed, hit, pulled... all the time, depending which level you play, I don't mean the game you have once in school with your mates. Plus you're jumping all the time, obviously landing again, and not necessarily on your feet. Your back absorbs all that. Plus I was very young, and my body not fully developed yet. So do that for years.

Basically the disc moved out, so they had to cut parts of it away.

My father is 1.83m and my mom is 1.79m, so quite tall. I was 1.97m when I was 15, so you can imagine that I grew quite fast. At that time I only weighed 70kg though. With maturity I grew stronger and within 5 years, although growing only 3 more cm, I gained 30kg, leaving me at 100kg, which is perfect weight for my height. And so far I kept it, last 20 years didn't change much. I'm still quite "skinny" for my 2m, and majority of people don't even believe me that I put 100kg on the scale