TABLE 3. Mechanical Failure Rates Between Smokers and Nonsmokers.
| Smokers | Nonsmokers | p value | |
|---|---|---|---|
| Cup Revision for Aseptic Loosening | 5 | 2 | |
| Radiographically Loose Cup | 0 | 3 | |
| Acetabular MFR | 5/34 (14.7%) | 5/131 (3.8%) | 0.032* |
| Stem Revision for Aseptic Loosening | 2 C, 1 CL | 3 C, 0 CL | |
| Radiographically Loose Stem | 0 | 0 | |
| Femoral MFR | 3/34 (8.8%) | 3/131 (2.3%) | 0.103 |
| Cup or Stem Revision for Aseptic Loosening | 8 | 5 | |
| Radiographically Loose Cup or Stem | 0 | 3 | |
| Combined Component MFR | 8/68 (11.8%) | 8/262 (3.1%) | 0.007** |
MFR=Mechanical Failure Rate
C=Cement
CL=Cementless (porous-coated)
*
p < 0.05
**
p < 0.01