Table 1 Iterations of 3D printed drill guide being used to drill osteoporotic sawbone femurs
From: Accuracy of guide wire placement for femoral neck stabilization using 3D printed drill guides
Iteration | Description | Figure |
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1 | All models were created with a cylindrical shell, just covering the lower half of the greater trochanter. Additional coverage of the greater trochanter was needed. Tubes leading from guide wire entry point to sawbone cortex are external. |
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2 | Tubes were lengthened, however proved too flexible and more prone to breakage. |
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3 | Internal channels were created to negate the effects of the excessively flexible tubes. However, the channel was too narrow to provide a consistent trajectory (too much toggle) |
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4 | A guide was made using Formlabs Rigid Resin. However, the highly stiff material did not allow for flexible conformation to the sawbones. |
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5 | The Percutaneous Screw Guide had a slightly lowered turret to minimize cortical breach in the femoral neck superiorly. Channel length of 2 cm was standardized across all models. The guides are shown left to right: Percutaneous Screw Guide, FNS Guide, DHS Guide. |
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