Radiographic assessment of radiolucent lines around a highly porous titanium cup (Tritanium) using digital tomosynthesis, after total hip arthroplasty

Table 1 Number of RLs ≥ 1 mm (%) on digital tomosynthesis and plain radiography by the zones of DeLee and Charnley at the designated postoperative periods

		1 week	3 months	6 months	1 year	2 years
Zone 1	DTS	15 (27.3)*	11 (20.0)	11 (20.0)	12 (21.8)	11 (20.0)
Zone 1	RG	2 (3.6)	1 (1.8)	0	0	1 (1.8)
Zone 2	DTS	20 (36.4)	13 (23.6)	15 (27.3)	10 (18.2)	14 (25.5)
Zone 2	RG	4 (7.3)	2 (3.6)	2 (3.6)	1 (1.8)	2 (3.6)
Zone 3	DTS	5 (9.1)	7 (12.7)*	9 (16.4)*	7 (12.7)*	5 (9.1)*
Zone 3	RG	1 (1.8)	4 (7.3)	2 (3.6)	4 (7.3)	3 (5.5)
Total patients	DTS	25 (45.4)*	19 (34.5)*	17 (30.9)*	18 (32.7)*	20 (36.3)*
Total patients	RG	5 (9.1)	4 (7.3)	3 (5.5)	5 (9.1)	5 (9.1)

Percentages in brackets (%)
RG plain radiograph, DTS digital tomosynthesis, total patients number of patients with RLs in any one of the zone
p value less than 0.05 are shown as *p < 0.05 between RG and DTS

ISSN: 1749-799X