Objective:To investigate the surgical method of preoperative computed tomography angiography(CTA) combined with color Doppler ultrasonography(CDU) vascular localization assisted by downstream vascularized medial femoral condylar bone flap and its clinical effect in the treatment of refractory scaphoid fracture nonunion.Methods:Retrospective analysis of case data from January 2018 to June 2022 in the Department of Orthopedics at Xingtai General Hospital of North China Medical and Health Group, using a free medial femoral condylar bone flap with descending knee artery as the blood supply to repair old fractures of the scaphoid bone with bone damage. Prior to surgery, CTA combined with CDU technology was used to locate the descending knee artery, and the medial femoral condylar bone flap was designed based on the localization result and bone defects. Follow-up was conducted using outpatient and telephone method. The degree of wrist pain was evaluated using the visual analogue scale (VAS), wrist function was evaluated using the improved Mayo scoring method, the degree of scaphoid arch back deformity was evaluated based on the angle of the scaphoid bone, and stability between the carpal bones was evaluated based on the angle of the scaphoid moon. The normal distribution metric data was represented as Mean±SD, and paired sample t-tests were used to compare the preoperative CDU measurement and the actual intraoperative measurement of the vessel diameter at the origin of the descending knee artery, as well as the distance to the inferior edge of the medial femoral condyle. The VAS score for pain before and after surgery, the Mayo score for wrist function, wrist grip strength, range of motion, scaphoid angle, and scaphoid angle are also compared. Results:A total of 12 patients were enrolled, including 9 males and 3 females; age ranged from 23 to 56 years old, with an average of 36 years old. There were 7 cases of right side fractures, 5 cases of left side fractures, 8 cases of scaphoid waist fractures, and 4 cases of proximal pole fractures. There was no difference between the preoperative CDU location and the actual vessel diameter at the origin of the descending geniculate artery [(1.7±0.5) mm vs. (1.8±0.7) mm] and the distance to the inferior border of the medial femoral condyle [(11.9±2.1) cm vs. (12.1±1.9) cm]( P>0.05). All patients were followed up after the operation, the specific time ranged from 6 months to 2 years, with an average of 13 months. The X-ray films showed that the scaphoid bone healed in all patients after operation, and the average healing time was 15 weeks. After 6 months of follow-up, the VAS scores (3.7±0.9 vs. 0.5±0.1), Mayo scores (46.1±3.8 vs. 86.2±6.1), scapholunar angle [(65.3±4.1)° vs. (47.9±3.5)°], scaphoid angle [(37.1±3.9)° vs. (22.8±2.3)°], wrist flexion and extension range of motion [(79.0±11.7)° vs. (118.5±15.8)°], grip strength [(6.7±4.6) kg vs. (26.1±5.3) kg]were compared before and after surgery, the differences were statistically significant (all P<0.05). Conclusion:The free medial femoral condyle bone flap with a vascular pedicle is one of the ideal method to repair the old navicular fracture with osteonecrosis. The preoperative vascular positioning technique effectively guides the design and cutting of the bone flap and ensures fast and accurate operation during the operation.

Objective:To investigate the surgical method of preoperative computed tomography angiography(CTA) combined with color Doppler ultrasonography(CDU) vascular localization assisted by downstream vascularized medial femoral condylar bone flap and its clinical effect in the treatment of refractory scaphoid fracture nonunion.Methods:Retrospective analysis of case data from January 2018 to June 2022 in the Department of Orthopedics at Xingtai General Hospital of North China Medical and Health Group, using a free medial femoral condylar bone flap with descending knee artery as the blood supply to repair old fractures of the scaphoid bone with bone damage. Prior to surgery, CTA combined with CDU technology was used to locate the descending knee artery, and the medial femoral condylar bone flap was designed based on the localization result and bone defects. Follow-up was conducted using outpatient and telephone method. The degree of wrist pain was evaluated using the visual analogue scale (VAS), wrist function was evaluated using the improved Mayo scoring method, the degree of scaphoid arch back deformity was evaluated based on the angle of the scaphoid bone, and stability between the carpal bones was evaluated based on the angle of the scaphoid moon. The normal distribution metric data was represented as Mean±SD, and paired sample t-tests were used to compare the preoperative CDU measurement and the actual intraoperative measurement of the vessel diameter at the origin of the descending knee artery, as well as the distance to the inferior edge of the medial femoral condyle. The VAS score for pain before and after surgery, the Mayo score for wrist function, wrist grip strength, range of motion, scaphoid angle, and scaphoid angle are also compared. Results:A total of 12 patients were enrolled, including 9 males and 3 females; age ranged from 23 to 56 years old, with an average of 36 years old. There were 7 cases of right side fractures, 5 cases of left side fractures, 8 cases of scaphoid waist fractures, and 4 cases of proximal pole fractures. There was no difference between the preoperative CDU location and the actual vessel diameter at the origin of the descending geniculate artery [(1.7±0.5) mm vs. (1.8±0.7) mm] and the distance to the inferior border of the medial femoral condyle [(11.9±2.1) cm vs. (12.1±1.9) cm]( P>0.05). All patients were followed up after the operation, the specific time ranged from 6 months to 2 years, with an average of 13 months. The X-ray films showed that the scaphoid bone healed in all patients after operation, and the average healing time was 15 weeks. After 6 months of follow-up, the VAS scores (3.7±0.9 vs. 0.5±0.1), Mayo scores (46.1±3.8 vs. 86.2±6.1), scapholunar angle [(65.3±4.1)° vs. (47.9±3.5)°], scaphoid angle [(37.1±3.9)° vs. (22.8±2.3)°], wrist flexion and extension range of motion [(79.0±11.7)° vs. (118.5±15.8)°], grip strength [(6.7±4.6) kg vs. (26.1±5.3) kg]were compared before and after surgery, the differences were statistically significant (all P<0.05). Conclusion:The free medial femoral condyle bone flap with a vascular pedicle is one of the ideal method to repair the old navicular fracture with osteonecrosis. The preoperative vascular positioning technique effectively guides the design and cutting of the bone flap and ensures fast and accurate operation during the operation.

Patients with severe trauma require an extremely timely treatment and transfusion plays an irreplaceable role in the emergency treatment of such patients. An increasing number of evidence-based medicinal evidences and clinical practices suggest that patients with severe traumatic bleeding benefit from early transfusion of low-titer group O whole blood or hemostatic resuscitation with red blood cells, plasma and platelet of a balanced ratio. However, the current domestic mode of blood supply cannot fully meet the requirements of timely and effective blood transfusion for emergency treatment of patients with severe trauma in clinical practice. In order to solve the key problems in blood supply and blood transfusion strategies for emergency treatment of severe trauma, Branch of Clinical Transfusion Medicine of Chinese Medical Association, Group for Trauma Emergency Care and Multiple Injuries of Trauma Branch of Chinese Medical Association, Young Scholar Group of Disaster Medicine Branch of Chinese Medical Association organized domestic experts of blood transfusion medicine and trauma treatment to jointly formulate Chinese expert consensus on blood support mode and blood transfusion strategies for emergency treatment of severe trauma patients ( version 2024). Based on the evidence-based medical evidence and Delphi method of expert consultation and voting, 10 recommendations were put forward from two aspects of blood support mode and transfusion strategies, aiming to provide a reference for transfusion resuscitation in the emergency treatment of severe trauma and further improve the success rate of treatment of patients with severe trauma.

BACKGROUND: Plasminogen activator inhibitor-1 (PAI-1) plays an important role in the pathophysiology of sepsis, but the exact mechanism remains debatable. In this study, we investigated the associations among the serum levels of PAI-1, the incidence of 4G/5G promoter PAI-1 gene polymorphisms, immunological indicators, and clinical outcomes in septic patients. METHODS: A total of 181 patients aged 18-80 years with sepsis between November 2016 and August 2018 in the intensive care unit in the Xinhua Hospital were recruited in this retrospective study, with 28-day mortality as the primary outcome. The initial serum level of PAI-1 and the presence of rs1799768 single nucleotide polymorphisms (SNPs) were examined. Univariate logistic regression and multivariate analyses were performed to determine the factors associated with different genotypes of PAI-1, serum level of PAI-1, and 28-day mortality. RESULTS: The logistic analysis suggested that a high serum level of PAI-1 was associated with the rs1799768 SNP of PAI-1 (4G/4G and 4G/5G) (Odds ratio [OR]: 2.49; 95% confidence interval [CI]: 1.09, 5.68). Furthermore, a high serum level of PAI-1 strongly influenced 28-day mortality (OR 3.36; 95% CI 1.51, 7.49). The expression and activation of neutrophils (OR 0.96; 95% CI 0.93, 0.99), as well as the changes in the expression patterns of cytokines and chemokine-associated neutrophils (OR: 1.00; 95% CI: 1.00, 1.00), were both regulated by the genotype of PAI-1. CONCLUSIONS Genetic polymorphisms of PAI-1 can influence the serum levels of PAI-1, which might contribute to mortality by affecting neutrophil activity. Thus, patients with severe sepsis might clinically benefit from enhanced neutrophil clearance and the resolution of inflammation via the regulation of PAI-1 expression and activity.
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Humans ; Middle Aged ; Young Adult ; Genotype ; Neutrophils ; Plasminogen Activator Inhibitor 1/genetics* ; Polymorphism, Single Nucleotide/genetics* ; Retrospective Studies ; Sepsis/genetics*

Objective:To analyze the effectiveness of indocyanine green angiography in monitoring blood perfusion of free perforator flap during repair surgery of limb soft tissue defect.Methods:A retrospective case series study was conducted to analyze the clinical data of 26 patients who underwent free perforator flap repair of soft tissue defects in the limbs in Xingtai General Hospital of North China Medical and Health Group from August 2019 to October 2022. The patients included 21 males and 5 females, aged 20-59 years [(39.5±4.1)years]. The wound size ranged from 2.0 cm×5.0 cm to 12.0 cm×16.0 cm. The time from injury to surgery was 5-30 days [(16.2±1.9)days]. During the surgery, indocyanine green angiography was used to evaluate the blood perfusion in the flap area after the free perforator flap was completely cut but before the vascular pedicle was not cut off, and immediately after the free perforator flap was anastomosed with the recipient area′s blood vessels and sutured with surrounding tissues. Consistency testing was performed on the degree of blood perfusion of the skin flap displayed by two indocyanine green angiography tests to determine whether the anastomosis of the skin flap was unobstructed after transplantation. On 14 days after surgery, the second indocyanine green angiography technique was applied to measure the survival of flaps in patients with sufficient blood perfusion. The difference between the poor blood perfusion in the flap arearevealed by indocyanine green angiography technique and the actual necrosis occurrence in this part was compared. The sensitivity, specificity, accuracy, negative predictive value, and positive predictive value of indocyanine green angiography were calculated for evaluating blood perfusion in the flap area.Results:All the patients were followed up for 14-21 days [(17.4±3.5)days]. Two indocyanine green angiography tests showed strong consistency in blood perfusion in the flap area, with no statistically significant difference (Kappa coefficients of 1.00, P<0.01). All the patients had unobstructed anastomosis after flap transplantation. On 14 days after surgery, the second indocyanine green angiography test showed all skin flap areas as grade 1 in 11 patients, with the worst developed areas as grade 2 in 7 patients, grade 3 in 5, and grade 4 in 3. All the flaps survived in the 18 patients with flaps showing grade 1 development and the worst part showing grade 2 development; among the 8 patients with the worst developed areas being grade 3 and grade 4, 5 patients were found with skin flap necrosis (full thickness or superficial) in the areas with poor blood supply, and the skin flap survived well in 3 patients. Indocyanine green angiography in evaluating blood perfusion in the flap area showed the sensitivity of 100% (95% CI 0.46, 1.00), the specificity of 85.71% (95% CI 0.63, 0.96), the accuracy of 88.46% (95% CI 0.76, 1.00), the negative predictive value of 100% (95% CI 0.78, 1.00), and the positive predictive value of 62.50% (95% CI 0.26, 0.90). Conclusion:Indocyanine green angiography has good real-time imaging effect, with high sensitivity, specificity and accuracy, making it an objective method for monitoring the blood flow status of skin flaps and predicting skin flap necrosis.

Objective:To investigate the surgical method of preoperative computed tomography angiography (CTA) combined with color Doppler ultrasonography (CDU) vascular localization assisted by downstream vascularized medial femoral condylar bone flap and its clinical effect in the treatment of refractory scaphoid fracture nonunion.Methods:Retrospective analysis of case data from January 2018 to June 2022 in the Department of Orthopedics at Xingtai General Hospital of North China Medical and Health Group, using a free medial femoral condylar bone flap with descending knee artery as the blood supply to repair old fractures of the scaphoid bone with bone damage in deceased patients. Prior to surgery, CTA combined with CDU technology was used to locate the descending knee artery, and the medial femoral condylar bone flap was designed based on the localization result and bone defects. Follow up was conducted using outpatient and telephone method . The degree of wrist pain was evaluated using Visual Analog Scale (VAS) , wrist function was evaluated using the improved Mayo scoring method , degree of scaphoid arch back deformity was evaluated based on the angle of the scaphoid bone, and stability between the carpal bones was evaluated based on the angle of the scaphoid moon. The normal distribution metric data is represented as Mean±SD, and paired sample t-tests are used to compare the preoperative CDU measurement and the actual intraoperative measurement of the vessel diameter at the origin of the descending knee artery, as well as the distance to the inferior edge of the medial femoral condyle. The VAS score for pain before and after surgery, the Mayo score for wrist function, wrist grip strength, range of motion, scaphoid angle, and scaphoid angle are also compared. Results:A total of 12 patients were included, including 9 males and 3 females; age range from 23 to 56 years old, with an average of 36 years old. There were 7 cases of right side fractures, 5 cases of left side fractures, 8 cases of scaphoid waist fractures, and 4 cases of proximal pole fractures. There was no difference between the preoperative CDU location and the actual vessel diameter at the origin of the descending geniculate artery [ (1.7±0.5 ) mm vs. (1.8±0.7) mm] and the distance to the inferior border of the medial femoral condyle [ (11.9±2.1) cm vs. (12.1±1.9) cm]. Statistical significance ( P>0.05) . All patients were followed up after the operation, the specific time ranged from 6 months to 2 years, with an average of 13 months. The X-ray films showed that the scaphoid bone healed in all patients after operation, and the average healing time was 15 weeks. After 6 months of follow-up, the VAS scores (3.7±0.9 vs. 0.5±0.1) , Mayo scores (46.1±3.8 vs. 86.2±6.1) , scapholunar angle [ (65.3±4.1) ° vs. (47.9±3.5) °] , scaphoid angle were compared before and after surgery[ (37.1±3.9) ° vs. (22.8±2.3) °] , wrist flexion and extension range of motion [ (79.0± 11.7) ° vs. (118.5±15.8) °] , grip strength [ (6.7±4.6) kg vs. (26.1±5.3) kg] , the differences were statistically significant (all P <0.05 ) . Conclusions:The free medial femoral condyle bone flap with a vascular pedicle is one of the ideal method to repair the old navicular fracture with osteonecrosis. The preoperative vascular positioning technique effectively guides the design and cutting of the bone flap and ensures fast and accurate operation during the operation.

Objective:To investigate the surgical method of preoperative computed tomography angiography (CTA) combined with color Doppler ultrasonography (CDU) vascular localization assisted by downstream vascularized medial femoral condylar bone flap and its clinical effect in the treatment of refractory scaphoid fracture nonunion.Methods:Retrospective analysis of case data from January 2018 to June 2022 in the Department of Orthopedics at Xingtai General Hospital of North China Medical and Health Group, using a free medial femoral condylar bone flap with descending knee artery as the blood supply to repair old fractures of the scaphoid bone with bone damage in deceased patients. Prior to surgery, CTA combined with CDU technology was used to locate the descending knee artery, and the medial femoral condylar bone flap was designed based on the localization result and bone defects. Follow up was conducted using outpatient and telephone method . The degree of wrist pain was evaluated using Visual Analog Scale (VAS) , wrist function was evaluated using the improved Mayo scoring method , degree of scaphoid arch back deformity was evaluated based on the angle of the scaphoid bone, and stability between the carpal bones was evaluated based on the angle of the scaphoid moon. The normal distribution metric data is represented as Mean±SD, and paired sample t-tests are used to compare the preoperative CDU measurement and the actual intraoperative measurement of the vessel diameter at the origin of the descending knee artery, as well as the distance to the inferior edge of the medial femoral condyle. The VAS score for pain before and after surgery, the Mayo score for wrist function, wrist grip strength, range of motion, scaphoid angle, and scaphoid angle are also compared. Results:A total of 12 patients were included, including 9 males and 3 females; age range from 23 to 56 years old, with an average of 36 years old. There were 7 cases of right side fractures, 5 cases of left side fractures, 8 cases of scaphoid waist fractures, and 4 cases of proximal pole fractures. There was no difference between the preoperative CDU location and the actual vessel diameter at the origin of the descending geniculate artery [ (1.7±0.5 ) mm vs. (1.8±0.7) mm] and the distance to the inferior border of the medial femoral condyle [ (11.9±2.1) cm vs. (12.1±1.9) cm]. Statistical significance ( P>0.05) . All patients were followed up after the operation, the specific time ranged from 6 months to 2 years, with an average of 13 months. The X-ray films showed that the scaphoid bone healed in all patients after operation, and the average healing time was 15 weeks. After 6 months of follow-up, the VAS scores (3.7±0.9 vs. 0.5±0.1) , Mayo scores (46.1±3.8 vs. 86.2±6.1) , scapholunar angle [ (65.3±4.1) ° vs. (47.9±3.5) °] , scaphoid angle were compared before and after surgery[ (37.1±3.9) ° vs. (22.8±2.3) °] , wrist flexion and extension range of motion [ (79.0± 11.7) ° vs. (118.5±15.8) °] , grip strength [ (6.7±4.6) kg vs. (26.1±5.3) kg] , the differences were statistically significant (all P <0.05 ) . Conclusions:The free medial femoral condyle bone flap with a vascular pedicle is one of the ideal method to repair the old navicular fracture with osteonecrosis. The preoperative vascular positioning technique effectively guides the design and cutting of the bone flap and ensures fast and accurate operation during the operation.

Objective:To evaluate the efficacy of 125I interstitial brachytherapy in the treatment of local advanced parotid adenoid cystic carcinoma (ACC), and to analyze prognostic factors affecting treatment outcome, in order to provide references for the treatment of local advanced parotid adenoid cystic carcinoma. Methods:Patients with histology-confirmed ACC of the parotid who received 125I interstitial brachytherapy in Peking University Hospital of Stomatology between Aug 2007 and Jan 2018 were included.Prognostic factors affecting overall survival (OS), progression-free survival (PFS), and local control rate (LCR) were analyzed.Meanwhile, distant metastases as well as acute and long-term radiological toxicities were described. Results:A total of 16 patients (11 females, mean age 55.4 years) of stage cT 4bN 0M 0 who received definitive 125I interstitial brachytherapy were included.The median follow-up period was 41.5 months (8-104 months), and the 1-, 3- and 5-year OS were 86.7%, 72% and 54%, respectively.Five patients suffered from local recurrence, the 1-, 3- and 5-year LCR were 93.7%, 80% and 68.7%, respectively, and the 1-, 3- and 5-year PFS were 74%, 53%, and 18.9%, respectively.Nine cases developed distant metastases.Among them, intracranial and pulmonary metastases took place the most frequently and six patients who had skull base invasion developed multi-organ metastases.An encased carotid artery was an independent prognostic factor for distant metastases (HR=12, P=0.045). Severe radiological toxicities were observed in eight patients (8/16, 50%), including radio-dermatitis, hearing loss, progressive trismus, and eye toxicities. Conclusions:The 5-year LCR in patients treated with definitive 125I interstitial brachytherapy for local advanced ACC of the parotid was 68.7%, and skull base invasion and an encased carotid artery were independent adverse prognostic factors of bad prognosis and multi-organ metastases.

Objective:To explore the independent prognostic factors of primary osteosarcoma patients under 20 years old after radical surgery, so as to predict the prognosis and survival of patients.Methods:The clinicopathological data of 1 339 patients with primary osteosarcoma diagnosed and registered in the National Cancer Institute Surveillance, epidemiology and outcome database (SEER) from 1984 to 2014 were retrospectively analyzed. Kaplan Meier method was used to calculate the survival rate of patients. Log rank test was used to evaluate the survival difference. Cox multivariate analysis was used to determine the independent prognostic factors of osteosarcoma after radical surgery factor.Results:The results of primary osteosarcoma patients undergoing radical surgery found that 34 cases (2.54%) aged 0-5 years old, 236 cases (17.63%) aged 6-10 years old, and 600 cases (44.81%) aged 11-15 years old and 469 cases (35.02%) aged 16-20 years old. The median survival time was 68 months. Among them, 757(56.53%) were male and 582(43.47%) were female. Among the 1 339 cases, 986 were white (73.64%), followed by black 230(17.18%), and 123 other races (9.18%). Multivariate analysis revealed that males ( HR=1.242; 95% CI:1.024-1.505), axial osteosarcoma ( HR=1.589; 95% CI:1.179-2.166), and regional invasion of osteosarcoma ( HR=1.470; 95% CI:1.156-1.870), distant metastasis ( HR=3.536; 95% CI:2.725-4.589) were independent risk factors for overall survival. Other types of osteosarcoma ( HR=0.471; 95% CI:0.285-0.779) were independent protective factors for overall survival. Conclusions:Based on the SEER database, this study identified independent prognostic factors for patients with primary osteosarcoma under the age of 20 who underwent radical surgery, which will help clinicians formulate individualized medical strategies and predict patients′ prognosis.

Objective:To investigate the clinical effects of retrograde anterolateral thigh perforator flaps assisted with computed tomography angiography (CTA) in repairing skin and soft tissue defects around the knee or in proximal lower leg.Methods:A retrospective cohort study was conducted. From May 2015 to October 2019, 17 patients with skin and soft tissue defects around the knee or in proximal lower leg were admitted to the Department of Orthopedics of Jizhong Energy Xingtai Mig General Hospital, including 12 males and 5 females, aged 16-65 years, with an average age of 35 years. The areas of skin and soft tissue defects after debridement ranged from 6.0 cm×3.0 cm to 15.0 cm×9.0 cm. The retrograde anterolateral thigh perforator flaps were designed according to the origin and distribution of the perforating branches in flaps and the length of the vascular pedicle examined with CTA and the condition of the wound to repair the wounds. The areas of resected flaps ranged from 6.5 cm×3.5 cm to 15.5 cm×9.5 cm. The wounds in donor sites of flaps were sutured directly or covered with medium-thickness skin grafts from healthy upper leg. The sources of the perforating branches in flaps were recorded. The lateral circumflex femoral artery, its branches, and the relative length of the vascular pedicle were compared between preoperative CTA detection and intraoperative observation. The survivals of the flaps were observed. At the last follow-up, the effects of flaps in repairing wounds were evaluated according to evaluation standard of efficacy satisfaction; the motion ranges of flexion and extension of the knee joint were measured, and the knee joint function was evaluated according to the Hohl knee joint function evaluation standard; the sensory function in the flap area was evaluated according to the sensory function evaluation standard formulated by the British Medical Research Council; the wound healing and the occurrence of complication affecting motor function of limb of flap donor sites was observed. Data were statistically analyzed with paired sample t test. Results:The perforating branches in flaps originated from descending branches, oblique branches, and rectus femoris branches of lateral circumflex femoral artery in 7, 6, and 4 patients, respectively. The flaps with blood supply from descending branches, oblique branches, and rectus femoris branches of lateral circumflex femoral artery were type 1, 2, and 3 retrograde anterolateral thigh perforator flaps, respectively. The preoperative CTA examination of lateral circumflex femoral artery and its branches were consistent with those observed during operation. The relative lengths of vascular pedicles of type 1, 2, and 3 retrograde anterolateral thigh perforator flaps calculated after CTA examination were 0.32±0.13, 0.56±0.07, and 0.56±0.15, which were close to 0.35±0.12, 0.52±0.10, and 0.53±0.12 measured and calculated during operation, respectively ( t=0.45, 0.80, 0.31, P>0.05). All flaps survived in 17 cases without vascular crisis. At the last follow-up, 16 patients were satisfied with effects of flaps in wound repair, with 1 patient feeling average about the effect; the flexion range of knee joint was 100-120°, and the extension range of knee joint was -2-0°; knee joint function was evaluated as excellent in 9 cases, good in 7 cases, and poor in 1 case; the sensory function of the flap area reached S 4 level in 2 cases, S 3 level in 8 cases, and S 2 level in 7 cases; the wounds in flap donor sites healed well; there was no adverse effect in motor function of limbs. Conclusions:Retrograde anterolateral thigh perforator flap is an effective method for repairing skin and soft tissue defects around the knee or in proximal lower leg. Preoperative CTA examination can fully show the anatomical characteristics of the branches of the lateral circumflex femoral artery and the perforating vessels of each branch, which can guide preoperative flap design and operation, thus shortening operation time and improving flap survival rate, with good clinical effects.