The Orthopaedic Knowledge Update 12 book due to be released in March 2017, released a few select chapters to Orthopaedic Knowledge Online Journal a service offered by the American Academy of Orthopaedic Surgeons. By surprise the academy picked one of the two tumor chapters for early release in this online form. A PDF file of the chapter is attached. The title of the chapter is Malignant Tumors of Bone and Soft Tissue authored by Matthew DiCaprio, MD.