John looked at Kate and sighed "the doctors said it would take months for me to fully heal. I can walk just fine. What you've just seen is a muscle spasm. Nothing serious. It's part of the healing. The muscles need to heal. The Tablet is an opiod painkiller to help. Mainly for my arm as it clipped a nerve" he looked meaningfully at kate "not a word about it to anyone ok? Mum doesn't need to know as she will worry even more"