Meta-analysis of the Efficacy of the Anatomical Center and High Hip Center Techniques in the Treatment of Adult Developmental Dysplasia of the Hip

Table 2

General profile of patients included in the literature.

First author	Year	Nation	Type of study	Age (HHC/AC)	Number or hip cases (HHC/AC, years)	Gender (male/female, ) (HHC/AC, )	Follow-up years (HHC/AC, years)	Outcome indicator
Traina [11]	2009	Italy	RS	32-76/31-67	44/44	6/30 5/32	9/9	⑦⑧⑫
Nawabi [9]	2014	America	RS	18-77	27/24	4/19 7/17	13/12	⑪⑬⑭
Ren[12]	2015	China	RS	54.4/56.2	37/35	4/25 4/24	2.2	⑤⑥⑧⑨⑬⑭
Christodoulou[8]	2010	Greece	RS	34-77.2	34/70	8/96		⑤⑧⑨⑩⑪
Zhu [13]	2017	China	RS	/	33/25	4/29 3/22	2	⑤⑧⑨⑫⑬⑭
Zhang [14]	2017	China	PS	/	21/21	4/17 4/17	1	①②③④⑤⑥⑦⑧⑩⑮
Wang [15]	2018	China	RS	/	46/20	6/40 4/16	2	①②⑤⑥⑨⑫⑬⑭
Ge [16]	2021	China	RS	/	23/25	9/14 8/17	/	①②③④⑤⑥⑧⑨ ⑫⑬⑭
Shen [17]	2021	China	RS	/	23/19	2/21 0/19	/	⑤⑥⑧⑨⑫⑬⑭

Annotation: ① operation time; ② intraoperative blood loss; ③ postoperative drainage volume; ④ the time of going to the ground; ⑤ postoperative Harris score; ⑥ the difference in length of the lower extremities; ⑦ WOMAC scores; ⑧ postoperative complications; ⑨ postoperative Trendelenburg sign; ⑩ the length of limb lengthening; ⑪ prosthesis wear; ⑫ prosthesis loosening; ⑬ the vertical distance of the center of rotation after surgery; ⑭ the horizontal distance of the center of rotation after surgery; ⑮ hospitalization expenses. Abbreviations: HHC: high hip center technique; AC: anatomical center technique; RS: retrospective study; PS: prospective case series.