Reconstruction of Paprosky type IIIB acetabular bone defects using a cup-on-cup technique: A surgical technique and case series

Table 3 Comparison of studies reporting reconstructions for Paprosky type III acetabulum bone defects with tantalum metal augments

Ref.	Number and Paprosky type	Reconstruction technique for defects	Mean follow-up	Mean postoperative hip score	Failure resulting from aseptic loosening	Other complications requiring reoperation
Lingaraj et al[8]	17 IIIA, 6 IIIB without pelvic discontinuity	21 TM shell-augment; 1 TM shell alone; 1 acetabular component-cage	41 mo (range, 24 to 62)	Harris hip score 75.7 (range, 53 to 100)	0	2 recurrent instability, 1 early infection with irrigation and debridement
Sporer et al[9]	28 IIIA	The TM shell-augment in all cases	3.1 yr (range, 1 to 4 )	The modified Merle d’Aubigne and postel score 10.6	0	1 recurrent instability
Del Gaizo et al[10]	37 IIIA	The TM shell-augment in all cases	60 mo (range, 26 to 106)	Harris hip score 81.5 (range, 27.0 to 99.8)	1 (2.7%)	5 recurrent instability, 4 infection with irrigation and debridement, 2 periprosthetic femoral fracture
Grappiolo et al[11]	42 IIIA, 13 IIIB without pelvic discontinuity	The TM shell-augment in all cases	53.7 mo (range, 36 to 91)	Harris hip score 90.5 (range, 61 to 100)	3 (5.5%)	1 recurrent instability
Current study	6 IIIB without pelvic discontinuity	The cementless acetabulum component and TM-Cup augment in all cases	42 mo (range, 36 to 52)	Harris hip score 80.7 (range, 71.5 to 87.5)	0	1 greater trochanteric migration

TM: Trabecular metal.