I'm looking for statistics on the annual number of knee, shoulder and
lower back injuries sustained during sporting activities, in the UK,
USA, and at least one other EU country.  Specifically, injuries that
require muscle rehabilitation, such as shoulder luxation or the vastus
medialis obliquus (VMO) muscle of the knee.

If actual statistics from government/insurers/etc. are not available,
estimates based on research by qualified professionals could be
acceptable.