Did what looked like Lauri did 2 or 3 times to each ankle in my 20s - landed just like that and it ballooned to baseball size and turned purple. They said I tore ligaments each time. Was on crutches for a week or so and then rest. If I remember right, it was about 4 weeks to get back to running. Trusting it after was an issue though, and they told me it was more likely it may happen again as I weakened that area, and they were right. But that was late 80's medicine, and I wasn't getting pro athlete care.