Book excerpt: In this issue of Hand Clinics, guest editors Drs. Phillip Ross and Sarah E. Sasor bring their considerable expertise to the topic of the Thumb CMC Joint. Top experts in the field discuss different strategies for the management of problems with the thumb carpometacarpal (CMC) joint, as well as treatment options. - Contains 14 relevant, practice-oriented topics including joint-preserving treatments for thumb CMC osteoarthritis; thumb CMC implant arthroplasty; revision CMC arthroplasty; diagnosis and treatment of CMC instability; and more. - Provides in-depth clinical reviews on the thumb CMC joint, offering actionable insights for clinical practice. - Presents the latest information on this timely, focused topic under the leadership of experienced editors in the field. Authors synthesize and distill the latest research and practice guidelines to create clinically significant, topic-based reviews.