Table 1.

Patient details for the age-stratified groups and the normal elderly group

Group	Number of subjects	Gender (M:F)	Age, years (range)	Period post-op., years (range)
Total THR	147	83:64	71.10 (54.44–92.83)	9.90 (8.91–11.44)
54–64	33	12:21	61.12 (54.44–64.96)	9.75 (8.91–10.60)
65–69	25	14:11	67.68 (65.02–69.92)	9.89 (9.19–10.78)
70–74	45	32:13	72.39 (70.16–74.98)	9.94 (8.99–11.44)
75–79	29	19:10	76.80 (75.03–79.81)	9.98 (9.43–10.74)
> 80	15	6:9	83.90 (80.67–92.83)	10.01 (9.89–10.28)
Normal	10	6:4	64.0 (59.2–68.5)	n.a.