protocolSection identificationModule nctId: NCT06277687, orgStudyIdInfo id: SYSKY-2024-023-02, briefTitle: Exploratory Study on the Application of Virtual Augmented Reality Combined With Finder in Preoperative Anterolateral Thigh Flap Perforator Positioning, statusModule overallStatus: RECRUITING, startDateStruct date: 2024-02-15, primaryCompletionDateStruct date: 2025-01-01, completionDateStruct date: 2026-01-01, studyFirstPostDateStruct date: 2024-02-26, lastUpdatePostDateStruct date: 2024-03-19, sponsorCollaboratorsModule leadSponsor name: Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, class: OTHER, descriptionModule briefSummary: Oral and maxillofacial region is an important anatomical part of human body, responsible for chewing, swallowing, language, expression, breathing and other physiological functions. The tissue defects in this area not only seriously affect the physiological function, but also lead to facial deformity and aesthetic damage, affecting the quality of life of patients. The anterolateral thigh flap has become one of the main methods for defect repair due to its large tissue volume and high survival rate, and one of the key steps to ensure a high survival rate is the location of the perforator. How to find the perforator more accurately by improving the detection scheme or locating the perforator according to the anatomical structure, and guide the preparation and cutting of the flap, is the main direction of current research. This study intends to conduct a exploratory study on perforator localization of flap, and explore its effectiveness and accuracy through sensitivity and specificity.In this study, a total of 24 patients with maxillofacial defects caused by tumors, trauma and other reasons requiring anterolateral femoral flap repair were included, and the perforator branch of femoral anterolateral flap was positioned preoperatively by Virtual augmented reality combined with perforator positioning device and color Doppler ultrasound. After the anterolateral thigh flap was prepared, the incision was closed in the donor area of the leg, and the flap was transplanted free to the maxillofacial defect area for repair. The sensitivity, specificity, positive predictive value, negative predictive value, distance difference and odds ratio of the two methods were calculated respectively, and the differences of each evaluation index between the two groups were compared, mainly to evaluate the sensitivity and specificity between the two groups., conditionsModule conditions: Blood Vessel Perforation, designModule studyType: INTERVENTIONAL, phases: NA, designInfo allocation: NA, interventionModel: SINGLE_GROUP, interventionModelDescription: After performing CTA examination, input the CTA data into Cinematic Anatomy reconstruction software to analyze blood vessels, muscles and other tissues are reconstructed in three dimensions. Before the operation, the Finder is used to restore the position of the thigh during CTA examination. The Hololens is used to match the reconstructed three-dimensional image with the Finder and the thigh. Before the operation, the pedicles of the descending branches of the lateral arteries and the perforating vessels are marked on the skin of the thigh to achieve the positioning and marking of the perforating branches., primaryPurpose: DIAGNOSTIC, maskingInfo masking: NONE, enrollmentInfo count: 24, type: ESTIMATED, armsInterventionsModule interventions name: Virtual Augmented Reality Combined With Finder, outcomesModule primaryOutcomes measure: Sensitivity, primaryOutcomes measure: Specificity, secondaryOutcomes measure: positive predictive value, secondaryOutcomes measure: negative predictive value, secondaryOutcomes measure: Youden Index, eligibilityModule sex: ALL, minimumAge: 18 Years, maximumAge: 80 Years, stdAges: ADULT, stdAges: OLDER_ADULT, contactsLocationsModule locations facility: Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University, status: RECRUITING, city: Guanzhou, state: Guangdong, zip: 510000, country: China, contacts name: Song Fan, Doctor degree, role: CONTACT, phone: 020-81332477, email: fansong2@mail.sysu.edu.cn, contacts name: Song Fan, Doctor degree, role: PRINCIPAL_INVESTIGATOR, hasResults: False