Reconstruction of Bony Defects after Tumor Resection with 3D-Printed Anatomically Conforming Pelvic Prostheses through a Novel Treatment Strategy

Table 1

Definition of the surgical classification and management strategy proposed for each type of resection.

Categorization pelvic involvement
	R I	R II/I+II	R II+III/I+II+III
Tumor location	Ilium	Acetabulum/ilium and acetabulum	Acetabulum, pubis, and ischium/hemipelvis
Incision
Start point	Pubic tubercle	Pubic tubercle	Pubic tubercle
End point	Anterior superior iliac spine	Anterior superior iliac spine	Posterior superior iliac spine
Lateral auxiliary incision	No	Yes	Yes
Prosthesis component	Ilium	Acetabulum/ilium and acetabulum	Acetabulum, pubis and ischium/hemipelvis