1. Segment Your Image Data in Simpleware ScanIP
A CT scan of the patient’s pelvic region can be imported quickly and simply into Simpleware ScanIP to generate a model of the patient’s anatomy.
A wide range of segmentation tools is available to create a model of the bones in the pelvic region. Fully automated AI solutions generate a segmented model with key landmarks in only a few minutes with a single click. Semi-automated segmentation tools include interactive threshold, flood fill, and the split tool. These can both be combined with our range of Simpleware image filters and 3D editing tools, ideal for overcoming problems caused by artifacts in the image data. For more information on our range of segmentation tools for Orthopedics, please read our blog Top Tips to Speed up Orthopedic Image Segmentation.
2. Place Landmarks in Simpleware Software
Once a clean and accurate model of the patient anatomy has been created, landmarks can be generated (using Simpleware AS Ortho or the measurement tools). These key features of the bone structure influence the implant design and can be used as-is or modified to suit. These landmarks can also be combined with key measurements such as:
- Diameter of the femoral head
- Femoral neck width and length
- Position of the femoral neck axis
- Angle between the neck of the femur and the shaft
- Position of the femoral-shaft axis
- Width of the femoral shaft
3. Design in SOLIDWORKS and Import with Simpleware Design Link
In SOLIDWORKS, you can choose your most appropriate CAD implant assembly to work with. The implants designed in SOLIDWORKS are then imported into Simpleware ScanIP using Simpleware Design Link. The CAD implant can also be registered to the Simpleware model over the joint that is to be replaced using either landmark registration techniques or through manual manipulation, or a combination of both. The position can be accurately checked in the 2D slice views and the 3D view to ensuring a good fit.
Once the CAD implant is in the correct position, adjustments can be made to the part to make it more suitable for the specific patient. You can change the:
- Size of the acetabular shell
- Thickness of the liner
- Angle of the neck of the implant
- Length or diameter of the stem
- And much more
Measurements perforated in Simpleware ScanIP can inform these decisions, so the implant resembles a healthy joint with a similar freedom of movement. All these changes to the implant can be made directly to the parameterized assembly in SOLIDWORKS and the changes can be synced by pulling the geometry back into Simpleware ScanIP.