The A400 Tapered Cementless Hip Stem was designed to address a range of surgical situations and includes 16 sizes and lateral offset, anteverted neck, and reduced distal taper options.
A400 Standard Stem Specifications
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| Size | Neck Axis Distance (mm) | Offset (mm) | Stem Length (mm) | Distal Stem Length (mm) | Proximal Cross Section M-L Width (mm) |
Proximal Cross Section A-P Width (mm) |
Distal Cross Section M-L Width (mm) |
Distal Cross Section A-P Width (mm) |
|
|---|---|---|---|---|---|---|---|---|---|
| Standard Offset (135 degree Neck-Shaft Angle) | |||||||||
| 4.5 | 48.8 | 33.5 | 131.2 | 9.0 | 29.1 | 11.5 | 5.5 | 4.2 | |
| 5.25 | 49.3 | 34.3 | 132.5 | 10.5 | 29.7 | 11.8 | 6.3 | 4.5 | |
| 6 | 49.9 | 35.0 | 133.8 | 12.0 | 30.4 | 12.0 | 7.0 | 4.7 | |
| 7.5 | 50.9 | 36.5 | 136.5 | 15.0 | 31.7 | 12.5 | 8.5 | 5.3 | |
| 8.25 | 51.5 | 37.3 | 137.8 | 16.5 | 32.3 | 12.8 | 9.3 | 5.6 | |
| 9 | 52.0 | 38.0 | 139.1 | 18.0 | 33.0 | 13.1 | 10.0 | 5.8 | |
| 9.75 | 52.6 | 38.8 | 140.4 | 19.5 | 33.7 | 13.3 | 10.8 | 6.1 | |
| 10.5 | 53.1 | 39.5 | 141.8 | 21.0 | 34.4 | 13.6 | 11.5 | 6.4 | |
| 11.25 | 53.7 | 40.3 | 143.4 | 22.5 | 35.1 | 13.8 | 12.5 | 6.6 | |
| 12 | 54.2 | 41.0 | 144.4 | 24.0 | 35.7 | 14.1 | 13.0 | 6.9 | |
| 13.5 | 55.4 | 42.5 | 147.0 | 27.0 | 37.0 | 14.7 | 14.5 | 7.4 | |
| 15 | 56.5 | 44.0 | 149.7 | 30.0 | 38.4 | 15.2 | 16.0 | 8.0 | |
| 16.5 | 57.7 | 45.5 | 152.3 | 33.0 | 39.7 | 15.7 | 17.5 | 8.5 | |
| 18 | 58.9 | 47.0 | 155.0 | 36.0 | 41.0 | 16.3 | 19.0 | 9.0 | |
| 19.5 | 60.1 | 48.5 | 157.6 | 39.0 | 42.3 | 16.8 | 20.5 | 9.6 | |
A400 Lateralized Stem Specifications
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Lateralized Offset (132 deg Neck-Shaft Angle)
| Size | Neck Axis Distance (mm) | Offset (mm) | Stem Length (mm) | Distal Stem Length (mm) | Proximal Cross Section M-L Width (mm) |
Proximal Cross Section A-P Width (mm) |
Distal Cross Section M-L Width (mm) |
Distal Cross Section A-P Width (mm) |
|---|---|---|---|---|---|---|---|---|
| 4.5 | 52.4 | 38.5 | 131.0 | 9.0 | 29.1 | 11.5 | 5.5 | 4.2 |
| 5.25 | 52.9 | 39.3 | 132.3 | 10.5 | 29.7 | 11.8 | 6.3 | 4.5 |
| 6 | 53.5 | 40.0 | 133.6 | 12.0 | 30.4 | 12.0 | 7.0 | 4.7 |
| 6.75 | 54.0 | 40.8 | 134.9 | 13.5 | 31.0 | 12.3 | 7.8 | 5.0 |
| 7.5 | 54.6 | 41.5 | 136.2 | 15.0 | 31.7 | 12.5 | 8.5 | 5.3 |
| 8.25 | 55.2 | 42.5 | 137.6 | 16.5 | 32.3 | 12.8 | 9.3 | 5.6 |
| 9 | 55.8 | 43.0 | 138.9 | 18.0 | 33.0 | 13.1 | 10.0 | 5.8 |
| 9.75 | 56.3 | 43.8 | 138.9 | 19.5 | 33.7 | 13.3 | 10.8 | 6.1 |
| 10.5 | 56.9 | 44.5 | 140.2 | 21.0 | 34.4 | 13.6 | 11.5 | 6.4 |
| 11.25 | 57.1 | 45.3 | 141.5 | 22.5 | 35.1 | 13.8 | 12.5 | 6.6 |
| 12 | 58.1 | 46.0 | 142.9 | 24.0 | 35.7 | 14.1 | 13.0 | 6.9 |
| 13.5 | 59.3 | 47.5 | 144.1 | 27.0 | 37.0 | 14.7 | 14.5 | 7.4 |
| 15 | 60.5 | 49.0 | 146.8 | 30.0 | 38.4 | 15.2 | 16.0 | 8.0 |
| 16.5 | 61.7 | 50.5 | 152.1 | 33.0 | 39.7 | 15.7 | 17.5 | 8.5 |
| 18 | 63.0 | 52.0 | 154.7 | 36.0 | 41.0 | 16.3 | 19.0 | 9.0 |
| 19.5 | 64.2 | 53.5 | 157.4 | 39.0 | 42.3 | 16.8 | 20.5 | 9.6 |
A400 Anteverted Stem Specifications
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| Size | Neck Axis Distance (mm) | Offset (mm) | Stem Length (mm) | Distal Stem Length (mm) | Proximal Cross Section A-P Width (mm) |
Proximal Cross Section M-L Width (mm) |
Distal Cross Section A-P Width (mm) |
Distal Cross Section M-L Width (mm) |
|
|---|---|---|---|---|---|---|---|---|---|
| Standard Offset (135 deg Neck-Shaft Angle) | |||||||||
| 6 | 49.4 | 34.3 | 134.8 | 12.0 | 29.5 | 10.0 | 6.0 | 4.7 | |
| 7.5 | 50.4 | 35.8 | 137.5 | 15.0 | 30.9 | 10.5 | 7.5 | 5.3 | |
| 9 | 51.5 | 37.3 | 140.1 | 18.0 | 32.2 | 11.1 | 9.0 | 5.8 | |
| 10.5 | 52.6 | 38.8 | 142.7 | 21.0 | 33.5 | 11.6 | 10.5 | 6.4 | |
| 12 | 53.7 | 40.3 | 145.4 | 24.0 | 34.8 | 12.1 | 12.0 | 6.9 | |
| 13.5 | 54.8 | 41.8 | 148.0 | 27.0 | 36.1 | 12.7 | 13.5 | 7.4 | |
| 15 | 56.0 | 43.3 | 150.7 | 30.0 | 37.5 | 13.2 | 15.0 | 8.0 | |
| 16.5 | 57.2 | 44.8 | 153.3 | 33.0 | 38.8 | 13.7 | 16.5 | 8.5 | |
| 18 | 58.3 | 46.3 | 156.0 | 36.0 | 40.1 | 14.3 | 18.0 | 9.0 | |
| Lateralized Offset (132 deg Neck-Shaft Angle) | |||||||||
| 6 | 52.9 | 39.2 | 134.1 | 12.0 | 29.4 | 10.0 | 6.0 | 4.7 | |
| 7.5 | 54.0 | 40.7 | 136.7 | 15.0 | 30.7 | 10.5 | 7.5 | 5.3 | |
| 9 | 55.1 | 42.2 | 139.4 | 18.0 | 32.0 | 11.1 | 9.0 | 5.8 | |
| 10.5 | 56.3 | 43.7 | 142.0 | 21.0 | 33.4 | 11.6 | 10.5 | 6.4 | |
| 12 | 57.4 | 45.1 | 144.7 | 24.0 | 34.7 | 12.1 | 12.0 | 6.9 | |
| 13.5 | 58.6 | 46.6 | 147.3 | 27.0 | 36.0 | 12.7 | 13.5 | 7.4 | |
| 15 | 59.8 | 48.1 | 149.9 | 30.0 | 37.4 | 13.2 | 15.0 | 8.0 | |
| 16.5 | 61.0 | 49.6 | 152.6 | 33.0 | 38.7 | 13.7 | 16.5 | 8.5 | |
| 18 | 62.2 | 51.1 | 155.2 | 36.0 | 40.0 | 14.3 | 18.0 | 9.0 | |
A400 Reduced Distal Taper Stem Specifications
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| Size | Neck Axis Distance (mm) | Offset (mm) | Stem Length (mm) | Distal Stem Length (mm) | Proximal Cross Section M-L Width (mm) |
Proximal Cross Section A-P Width (mm) |
Distal Cross Section M-L Width (mm) |
Distal Cross Section A-P Width (mm) |
|
|---|---|---|---|---|---|---|---|---|---|
| Standard Offset (135 degree Neck-Shaft Angle) | |||||||||
| 12 | 54.2 | 41.0 | 144.4 | 24.0 | 35.7 | 13.1 | 8.0 | 6.9 | |
| 13.5 | 55.4 | 42.5 | 147.1 | 27.0 | 37.0 | 13.7 | 9.5 | 7.4 | |
| 15 | 56.5 | 44.0 | 149.7 | 30.0 | 38.4 | 14.2 | 11.0 | 8.0 | |
| 16.5 | 57.7 | 45.5 | 152.3 | 33.0 | 39.7 | 14.7 | 10.5 | 8.5 | |
| 18 | 58.9 | 47.0 | 155.0 | 36.0 | 41.0 | 15.3 | 12.0 | 9.0 | |
| 19.5 | 60.1 | 48.5 | 157.6 | 39.0 | 42.3 | 15.8 | 13.5 | 9.6 | |
| Lateralized Offset (132 degree Neck-Shaft Angle) | |||||||||
| 12 | 58.1 | 46.0 | 144.1 | 24.0 | 35.7 | 13.1 | 8.0 | 6.9 | |
| 13.5 | 59.3 | 47.5 | 146.8 | 27.0 | 37.0 | 13.7 | 9.5 | 7.4 | |
| 15 | 60.5 | 49.0 | 149.4 | 30.0 | 38.4 | 14.2 | 11.0 | 8.0 | |
| 16.5 | 61.7 | 50.5 | 152.1 | 33.0 | 39.7 | 14.7 | 10.5 | 8.5 | |
| 18 | 63.0 | 52.0 | 154.7 | 36.0 | 41.0 | 15.3 | 12.0 | 9.1 | |
| 19.5 | 64.2 | 53.5 | 157.4 | 39.0 | 42.3 | 15.8 | 13.5 | 9.6 | |
Femoral head options
Femoral head options include CoCr-alloy and BIOLOX®† delta in the following sizes and offsets:
| Size (mm) | Offset (mm) | |||||
|---|---|---|---|---|---|---|
| CoCr Alloy | 28 | -4 | 0 | +4 | +8 | +12 |
| 32 | -4 | 0 | +4 | +8 | +12 | |
| 36 | -4 | 0 | +4 | +8 | +12 | |
| 40 | -4 | 0 | +4 | +8 | – | |
| BIOLOX delta Ceramic | 28 | -3.5 | 0 | +3.5 | – | – |
| 32 | -4 | 0 | +4 | +7 | – | |
| 36 | -4 | 0 | +4 | +8 | – | |
| 40 | -4 | 0 | +4 | +8 | – | |
† BIOLOX delta is a registered trademark of Cerasiv GmbH Innovatives Keramick-Engineering and CeramTec AG Innovative Ceramic Engineering.