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Femoral component design families used in this study
| Design | A | B | C | D | E | F |
|---|---|---|---|---|---|---|
| # AP sizes | 12 | 11* | 7 | 8 | 8 | 9 |
| AP increments (mm) | 2** | 2 | 3–5 | 3–4 | 3–4 | 2–3 |
| # ML size offerings per AP | 1–2 | 1–2 | 1 | 1 | 1 | 1 |
| Aspect ratio (ML/AP) | 1.0–1.3 | 1.0–1.2 | 1.1–1.2 | 1.2–1.3 | 1.1–1.2 | 1.1–1.2 |
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* Standard sizes and minus sizes
** For size 1–11
