Use of porous trabecular metal augments with impaction bone grafting in management of acetabular bone loss

Figures & data

Figure 1. Microscopic structure of trabecular metal

Figure 2. Wedge type trabecular metal augment.

Figure 3. Preoperative failed THR with acetabular bone loss.

Figure 4. Postoperative reconstruction film.

Table 1. WOMAC scores

Outcome measure	Preoperative score median (range)	Postoperative (2-year) score median (range)	p-value
WOMAC
Pain	38 (10–85)	90 (40–100)	< 0.001
Function	38 (1–81)	77 (40–100)	< 0.001
Stiffness	38 (0–88)	81 (25–100)	< 0.001

Figure 5. Radar graph of SF-36 score. Scores with * showed a statistically significant difference (p < 0.05).

PF* Physical function

RP* Role physical

BP* Bodily pain

GH Generic health

VT Vitality

SF* Social functioning

RE* Role emotional

MH Mental health

PCS* Physical component score

MCS Mental component score

Table 2. Difference between preoperative and immediately postoperative cup position

	Preoperatively	Immediately postoperatively	p-value
Abduction angle (degrees)	55 (1–107)	46 (31–56)	0
Cup position (mm)
x-axis	16 (7–35)	7 (0–25)	< 0.001
y-axis	18 (3–41)	9 (0–21)	< 0.001

Table 3. Change of cup position at the last follow-up

	Difference ^a	p-value
Change of abduction angle (degrees)	< 1	0.187
Cup migration (mm)
x-axis	< 5	0.138
y-axis	< 5	0.591

^a Difference between the immediately postoperative follow-up and the most recent follow-up