If you are travelling abroad in the EC you definitely need an EHIC – and don’t skimp on the travel insurance either. Like me, you may think it will never happen to you and then one day it might.
https://www.ehic.org.uk/Internet/startApplication.do
Here is the link for the EHIC – watch out that you don’t use the unofficial links which may charge you – I found one which charged £49!
http://patient.info/doctor/fractured-humerus
This is a great website which gives you basic information on a fractured humerus and what to expect.