Back to bones

This is the only photo I've taken today as I've been too busy and, as you can see, there's a shadow and it's unscaled. However... If I had to choose a favourite bone it would be this, the sacrum (anteroinferior view), for no other reason than I like the shape. It would have been more topical to have blipped a seventh cervical vertebra though as mine's giving me a lot of jip at the moment.