The Textbook of Spinal Surgery, 4th edition is now available.
https://shop.lww.com/Bridwell-and-DeWald-s-Textbook-of-Spinal-Surgery/p/9781496386489
https://shop.lww.com/Bridwell-and-DeWald-s-Textbook-of-Spinal-Surgery/p/9781496386489
https://shop.lww.com/Bridwell-and-DeWald-s-Textbook-of-Spinal-Surgery/p/9781496386489