I own or have read a lot of those books, but here is one of my favorites:

Dance Technique and Injury Prevention, I am in the middle of moving and don't know what box it is in and I can't remember the author. It is great. It has a section that is basic anatomy and then applies it to dance (mainly in the muscle groups). It helps you understand what muscles perform what actions. It shows photos and x-rays of properly pointed feet, sickled feet, and over pointed feet. Some of the x-rays are proper placement in point shoes and improper placement in pointe shoes.

There is also a section on different injuries, ways to prevent them, causes, and what general medical treatment would require.

Another section is on anatomical problems - scoliosis, hip and shoulder problems and ways to deal with them in class to help a student dance better.

The final section has different exercises for specific muscle groups.