In this case, the kneecap can be luxated by hand, but also spontaneously luxated when bending the knee joint. The kneecap remained until it is manually brought back into the track, or because the cat itself stretches and twists its paw. In these cases, we see that more often and longer, the paw in question is lifted. If the cat walks on it, there is no lameness. In this case, an operation can be considered.