I think just the ejection force can break bones if you are unlucky. A friend of mine had to punch out of a Harrier at low altitude. When he got out of the infir

I think just the ejection force can break bones if you are unlucky. A friend of mine had to punch out of a Harrier at low altitude. When he got out of the infirmary months later he was 2cm shorter from vertebrae compression than when he joined the RAF.