Femoral head diameter affects the revision rate in total hip arthroplasty: An analysis of 1,720 hip replacements with 9–21 years of follow-up

Figures & data

Table 1.  Data on 1,720 THAs in 1550 patients

Implant type	n	THA components revised			No. of patients	Age	Sex
		Cups	Stems	Both	who died	mean (SD)	Female/Male
Classic I 22-mm	308	7	7	13	122	58 (16)	252/56
Classic I 32-mm	1,412	31	24	81	727	72 (10)	810/602

Table 2.  Distribution data on preoperative diagnosis

Head size	Osteoarthritis	Rheumatoid arthritis	Femoral neck fractures
22 mm	154	114	40
32 mm	911	147	354

Cumulative revision rates for 22-mm and 32-mm diameter femoral heads (with 95% CIs) for THAs with 3 major diagnoses: osteoarthritis, rheumatoid arthritis, and femoral neck fracture.