I think vibration may, I stress may, be helpful in stimulating bone growth but the more studies I read about it, the more I share the caution of @windyshores and others about potential risk. And I think there's more than a whiff of snake oil salesmanship out there. When the claims might be overblown, the burden of due diligence is greater. But here's the other point, there a big difference between "might or might not help" and "might or might not help and actually could possibly damage." So I hope people consider the downside risks as something greater than disappointment that there was no benefit.