SMA (IMAGE) The University of Hong Kong Caption 3D surgical planning of the SMA as part of the jaw advancement surgery for patients with severe obstructive sleep apnea. Credit The University of Hong Kong Usage Restrictions N/A License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.