Table 4

Radiographic outcome
Study group Control group p value
n = 70 n = 173
Stable bony union [n] (%) 66 (94.3) 156 (90.2) 0.30
Periprosthetic radiolucencies
No periprosthetic radiolucency [n] (%) 66 (94.3) 156 (90.2) 0.30
Partial radiolucency < 1 mm [n] (%) 2 (2.9) 7 (4) 0.66
Partial radiolucency > 1 mm [n] (%) 2 (2.9) 9 (5.2) 0.43
Progressive radiolucency [n] (%) 0 (0) 1 (0.6) 0.52
Sum of radiolucencies [n] (%) 4 (5.7) 17 (9.8) 0.30
Stem migration
No stem migration [n] (%) 67 (95.7) 157 (90.8) 0.19
Stem migration < 2 mm [n] (%) 1 (1.4) 8 (4.6) 0.23
Stem migration 2–5 mm [n] (%) 1 (1.4) 4 (2.3) 0.66
Stem migration > 5 mm [n] (%) 1 (1.4) 4 (2.3) 0.66
Sum of stem migration [n] (%) 3 (4.3) 16 (9.2) 0.19
Proximal stress shielding
Proximal stress shielding [n] (%) 4 (5.7) 31 (17.9) <0.05

Wimmer et al.

Wimmer et al. BMC Musculoskeletal Disorders 2013 14:19   doi:10.1186/1471-2474-14-19

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