PollyRoulson Yes, indeed that could definitely be the case for her.
In fact she did end up with a bit of limp for a couple of days a few years ago after landing awkwardly when she jumped off the bed, which is one of the reason I got the little steps for her.
Although I did try to train her to do so, she never wanted to use the steps to get onto the bed, she still prefers to jump on.
However, she always uses them to get off the bed. She took to the idea of them really quickly, as if she immediately saw the greater benefit of this new method of getting down, which she clearly did; she's never jumped off the bed since.
She's so determined to use them that if the room is very dark, in the middle of the night, and she isn't sure about getting down safely, she will do a couple of little whimpers to wake me knowing I will turn on the light and she can then go down the steps.
They're not the most beautiful addition to my bedroom, being a rather unattractive pink plastic, with pink carpet on the steps, but they're the best £37 I've spent as far as she's concerned.