Table 3.
Literature review of subsidence of cemented collarless double-taper stems 12 months after impaction bone grafting and after primary THA
| Study | Cemented collarless double taper stem, (technique) | Number of hips | Method | Subsidence at 12 months (mm)* | ||
|---|---|---|---|---|---|---|
| Total (prosthesis-bone) | Prosthesis-cement | Cement-bone | ||||
| Howie et al. [current study] | Exeter (irradiated) | 16 | EBRA | 4.4 (2.8–6.0) | 2.9 (1.7–4.1) | 1.6 (0.8–2.5) |
| Exeter/CPT (nonirradiated, washed) | 12 | EBRA | 0.9 (0.6–1.2) | 0.8 (0.3–1.3) | 0.3 (0.1–0.5) | |
| CPT (modular tamp) | 17 | EBRA | 1.2 (0.6–1.8) | 0.8 (0.5–1.0) | 0.4 (0.2–0.7) | |
| Wraighte and Howard [43] | Exeter (nonirradiated) | 38 | Manual | 2.0† (1.0–3.0)‡ | ||
| Ornstein et al. [29] | Exeter (nonirradiated, washed) | 15 | RSA | 2.3§ | ||
| van Doorn et al. [42] | Exeter (nonirradiated) | 11 | RSA | 1.3 (0.8–2.2)‖ | ||
| Alfaro-Adrian et al. [1] | Exeter Primary THA | 14 | RSA | 1.1 (0.8–1.4) | 0§ | |
| Stefánsdottir et al. [37] | Exeter Primary THA | 14 | RSA | 1.2† (1.0–1.5) | 0.02† (−0.1– 0.1) | |
* Values are expressed as mean, with 95% confidence interval in parentheses, except where noted; †median; ‡interquartile range; §estimate from graph; ‖range; EBRA = Ein Bild Röntgen Analyse; RSA = radiostereometric analysis.