Clinical Application of Doppler Ultrasound Imaging Technology in Thumb Reconstruction

Abstract

Objective: In order to increase the survival rate of clinical thumb reconstruction, the Doppler ultrasound (DU) imaging technology based on the minimum variance adaptive beamforming (MV) algorithm is applied to the preoperative examination of thumb reconstruction. Method: 75 patients who needed thumb reconstruction were divided into 40 study group and 35 traditional group. Before operation, color Doppler ultrasound was used to examine saphenous vein, radial artery in the receiving area, dorsalis pedis artery and cephalic vein in the donor area to determine whether there was abnormality. In addition, the branch type of toe web and the Gilbert type of the first dorsal metatarsal artery were examined and confirmed. Through ultrasound examination, the operation plan was determined. In the traditional group, through doctor's pen Doppler auscultation or touch feeling, the great saphenous vein-dorsalis pedis vein-dorsal metatarsal veins-dorsal digital veins of foot was dissected in the traditional way without ultrasonic examination. The MV algorithm was used to process the ultrasonic image. Results: The ultrasonic image processed by MV algorithm is clearer and higher quality. There is no absence of dorsalis pedis artery in the contralateral donor area in 75 patients. There is no vascular crisis in the study group and one patient in the traditional group. The average operation time in the Gilbert III study group is 90 minutes, compared with 135 minutes in the traditional group. There is no walking pain of donor foot in the study group after Gilbert III operation, and there are three walking pain in the traditional group. Conclusion: The MV algorithm can be used in thumb reconstruction. It can detect the branch type of toe web and the Gilbert type of the first dorsal metatarsal artery. On this basis, the operation plan can be determined, which can reduce the blindness of the operation, shorten the operation time, increase the survival rate of the reconstructed thumb, and reduce the incidence of complications of the donor foot.