A circumferential scan is required when ordering a custom AFO.
During the scan, a seam may appear when either the scan is not fully circumferential or when the limb has slightly moved before the scan wraps around to meet the other side. This seam or gap could cause the scan to be rejected.
When scanning for AFOs a seam or gap along the posterior that runs down into the achilles and calcaneus can be very problematic because the lab would need to remove this seam or gap and recreate the patient's anatomy in these areas which means the changes of incorrectly recreating the unique contours in such an intricate area are much higher.
How can I resolve this issue?
After you tap SCAN to start scanning, capture the whole posterior side of the patient's limb first. No matter what position you have your patient in, move yourself to a position where you can capture the whole posterior area including the achilles and calcaneus, not just a partial capture. Then you can continue with capturing all the other areas of the limb. This way, when you reach the other side and close up the scan, the posterior aspect of the limb will have a smooth scan free of any seams or gaps to ensure the most critical aspects are free of issues.
Having trouble capturing the whole posterior aspect of the limb?
This may be a calibration/depth setting issue.