Law case from abuse of an elderly person with mental health and other medical issues - ph' millions.
This is the point. Tackling a drunk and disorderly rugby player is one matter. They proably won't even remember the incident by the time you've landed. Grab an old geezer the wrong way and break their hip, you'll never hear the legal end of it. I know a few people in the elderly care business. Even gentle passive restraints can cause injury when 'fragile' people struggle against them.