They don’t crash, their batteries don’t run out, and you can use them during take off and landing in an airplane...

Pocket Podiatrics: by Leon Watkins.

     The most “handholdable” of the three, it is also the most comprehensive.

The PI Manual: by the Podiatry Institute.

     The most in depth of the three, and helpful in studying for part II boards.

Foot and Ankle Secrets: ed Lawrence Harkless

     The most superficial, least handholdable, and least comprehensive of the group.