We rescued Olive whilst she was giving birth to premature kittens on a pavement - sadly only one of her babies survived - Pip a tiny male kitten.
Pip had a congenital defect where his back legs were splayed - it's known as 'Swimmer' kitten. However it is correctable, the treatment involved keeping Pips back legs tied together with surgical tape to hold them the correct distance apart and to allow his leg muscles to strengthen. Treatment took several weeks but Pip became able to walk normally.
Olive and Pip have since been rehomed.