Changes in bone mineral density (BMD) around the cemented Exeter stem: A prospective study in 18 women with 5 years follow‐up

Figures & data

Drawing of a DXA scan of the proximal femur, showing the 7 Gruen zones around a femoral stem.

Table

	BMD (g/cm^2)
Region of interest (ROI)	Baseline	18 months	60 months
Gruen zone
1	0.89/0.87 (0.60–1.34) ^a	0.93/0.87 (0.72–1.33) ^d	0.99/0.94 (0.77–1.32) ^h
2	1.49 / 1.55 (0.99–1.91 )^b	1.41 / 1.41 (0.90–1.87) ^d	1.47 / 1.45 (0.94–2.03)
3	1.77/ 1.74 (1.45–2.04) ^c	1.70/1.70 (1.45–2.09) ^e	1.77/1.76 (1.50–2.19)
4	1.90/2.02 (1.48–2.34)	1.90/1.96 (1.48–2.11)	1.96/1.96 (1.54–2.47)
5	1.64 / 1.63 (1.45–1.83)	1.62 / 1.60 (1.40–1.82) ^d	1.71 / 1.72 (1.45–1.97)^f
6	1.39 / 1.35 (1.02–1.93) ^c	1.21 / 1.15 (0.93–1.77) ^d	1.28 / 1.27 (0.90–1.82)^f
7	1.41 / 1.43 (0.52–1.91 )^c	1.21 / 1.14 (0.72–1.79)	1.25 / 1.23 (0.68–1.97) g
Periprosthetic region	1.38/ 1.37 (1.15–1.58) ^b	1.32/ 1.34 (1.11–1.53)	1.30/ 1.25 (1.06–1.58)^f
Contralateral hip	0.83/0.80 (0.51–1.08)	0.81 / 0.75 (0.55–1.12)	0.78/0.73 (0.57–1.02)
Spine	0.95/0.95 (0.71–1.22)	0.96/0.95 (0.77–1.23) ^d	1.02/0.95 (0.86–1.30)g

Significant difference between baseline and 18 months: ^ap < 0.05; ^b p < 0.01; and ^c p < 0.001.

Significant difference between 18 and 60 months: ^d p < 0.01; and ^e p < 0.001.

Significant difference between baseline and 60 months:^f p < 0.05; ^g p < 0.01; and ^h p < 0.001.