Table VI.

Survivorship of the hip after Chiari osteotomy

Authors	Year	Technique	No. of hips	Mean age (year)	Duration of follow-up (year)	Survival rate (%) (THA as endpoint)	Survival rate (%) (poor results as an endpoint)	Follow-up rate (%)
Calvert et al. [76]	1987	Chiari	52	19.8 (3–41)	14 (10–19)	94	65	72
Windgager et al. [78]	1991	Chiari	236	14.1 (2.6–51.3)	25 (20–34)	91	82	60
Lack et al. [77]	1991	Chiari	100	38 (30–59)	16 (10–21)	80	64	70
Ohashi et al. [80]	2000	Chiari	103	18.2 (6–48)	17 (4–37)	94	84 at 10 years, 68 at 20 years	81
Miguad et al. [67]	2004	Chiari	89	33 (17–56)	18 (6–25)	68	78 at 13 years	93
Yanagimoto et al. [79]	2005	Chiari	74	32 (6–64)	13 (10–20)	97	90	69
Kotz et al. [81]	2009	Chiari	80	23 (2–50)	32 (27–48)	60	N/A	15