“…Treatment options in segmental acetabular defects include the use of a high COR [12,27,45,56], structural grafts [20,24,46,52], impacted allografts [8,9,37,42,44,54], PMMA filling [26], large cementless cups [13,22,36,47,51], bilobed cups [4,29], and reconstruction rings [3,17,18,28,40]. Results vary among these techniques (Table 3).…”