Thank you so much for your comforting and comprehensive reply. Its put my mind at rest for sure. I've been trying to get my daughter to circle her ankle to re-mobilse it somewhat, and making sure she bends her knee as much as possible. The limping is from fear. She has no pain, and is walking very straight legged. Since her plaster was removed she's become very attached to her zimmer frame. There's no doubt she feels very unstable and lop-sided. Thanks again for your fabulous imformative reply