Mid-term results of revision surgery using double-trabecular metal cups alone or combined with impaction bone grafting for complex acetabular defects

Table 3 Comparison of preoperative and the last follow-up results

Variables	Total patients	Double-TM cups alone	Technique combined with IBG	p value
mHHS^△	29.6 ± 5.09	28.5 ± 4.14	31.0 ± 5.90	0.128
UCLA^△	4.7 ± 0.46	4.8 ± 0.42	4.6 ± 0.52	0.423
SF-36^△
Physical functioning	6.1 ± 1.86	5.7 ± 1.70	6.5 ± 2.07	0.341
Role-physical	19.7 ± 2.87	20.4 ± 2.99	18.8 ± 2.61	0.203
Bodily pain	35.4 ± 3.26	36.3 ± 3.74	34.3 ± 2.25	0.179
General health	7.8 ± 2.62	7.7 ± 3.09	8.0 ± 2.07	0.821
Vitality	11.6 ± 2.75	11.5 ± 3.03	11.8 ± 2.55	0.786
Social functioning	8.9 ± 2.90	9.5 ± 3.60	8.3 ± 1.67	0.141
Role-emotional	10.9 ± 3.93	11.5 ± 2.92	10.3 ± 5.06	0.263
Mental health	6.2 ± 2.96	6.7 ± 3.68	5.6 ± 1.77	0.788
LLD (mm)^△	18.3 ± 2.59	18.4 ± 2.99	18.3 ± 2.19	0.928
COR^a	1.08 ± 0.12	1.07 ± 0.13	1.08 ± 0.11	0.964
COR^b	1.06 ± 0.11	1.05 ± 0.11	1.06 ± 0.12	0.858

^△Improvement between the last follow-up and pre-operation
^aVertical position of COR/contralateral position of COR (the last follow-up)
^bHorizontal position of COR/contralateral position of COR (the last follow-up)
TM trabecular metal, IBG impacting bone grafting, mHHS modified Harris Hip Score, UCLA University of California, Los Angeles activity score, SF-36 36-item Short Form Health Survey, LLD limb-length discrepancy, COR center of rotation

ISSN: 1749-799X