I might have not stated it clearly: my client DOES NOT have a knee problem.I find that many patients with a knee problem are having an effect on the knee from the hip
And I am aware of your research project, as you comment on it in nearly every post.
But you are completely right, I will contact a sports injury Physio to ask for precautions or don'ts in regards to an unfunctional PCL.
Thanks for all. Cheers,
Andrea