Objective:To investigate the anatomy of lateral maxillocervical boot-shaped perforator fasciocutaneous flap and its clinical effect on repairing soft tissue defect of zygomatic-temporal region.Methods:(1)From December 2017 to December 2020, five fresh adult cadaver specimens were infused with gelatin lead oxidate and underwent one-time arteriography.The X-ray image was imported into Mimics 17.0 software, divided and colored based on the head and face anatomy, and the distribution and anastomosis of the arteries involved in the lateral maxillocervical boot-shaped perforator fasciocutaneous flap were observed.The head and neck samples of another 5 (10 sides) fresh adult cadavers were infused with red latex artery to establish the surgical model, and then dissected layer by layer to investigate the blood supply and the source of perforating artery of this flap.(2) The patients with zygomatic-temporal lesions were treated in the Department of Plastic Surgery, the First Affiliated Hospital of Anhui Medical University.They were treated with the lateral maxillocervical boot-shaped perforator fasciocutaneous flap to repair the wound left after lesion resection. The survival of the flap and the healing of the incision were observed after surgery and the appearance and sensation of donor and recipient sites as well as tumor recurrence were followed up.Results:(1) The pedicle of the lateral maxillocervical boot-shaped perforator fasciocutaneous flap is mainly nourished by the superficial temporal artery and its perforator.The average diameter of the maximum three perforations is (0.44±0.04) mm, (0.90±0.08) mm, (0.73±0.05) mm.The fascial vascular network and subdermal vascular network formed by perforating arteries from superficial temporal artery and branching arteries from facial artery at different layers are the anatomical basis for ensuring blood supply of lateral maxillocervical boot-shaped perforator fasciocutaneous flap. (2) A total of 12 patients with zygomatic-temporal lesions were treated clinically, including 8 males and 4 females aged 42-79 years, including 2 cases of senile sebaceous keratosis, 3 cases of squamous cell carcinoma, 1 case of skin ulcer and 6 cases of basal cell carcinoma. The range of defect after resection of the lesions was 4 cm×3 cm-9 cm×8 cm. The flap area was 5 cm×3 cm-11 cm×9 cm, the flap pedicle width was 2-3 cm, length was 2-4 cm, After surgery, the blood supply of the flap was good without necrosis, the wound were covered by first treatment. After 6-18 months of follow-up, the donor and recipient areas presented natural appearance, no swelling, no paresthesia and facial paralysis, and no recurrence of cancer.Conclusions:The lateral maxillocervical boot-shaped perforator fasciocutaneous flap pedicled with perforating branch of superficial temporal artery has reliable blood supply. Using this flap to repair large soft tissue defects in zygomatic-temporal region has the advantages of simple operation, similar color and texture, and good appearance.

Objective:To investigate the anatomy of lateral maxillocervical boot-shaped perforator fasciocutaneous flap and its clinical effect on repairing soft tissue defect of zygomatic-temporal region.Methods:(1)From December 2017 to December 2020, five fresh adult cadaver specimens were infused with gelatin lead oxidate and underwent one-time arteriography.The X-ray image was imported into Mimics 17.0 software, divided and colored based on the head and face anatomy, and the distribution and anastomosis of the arteries involved in the lateral maxillocervical boot-shaped perforator fasciocutaneous flap were observed.The head and neck samples of another 5 (10 sides) fresh adult cadavers were infused with red latex artery to establish the surgical model, and then dissected layer by layer to investigate the blood supply and the source of perforating artery of this flap.(2) The patients with zygomatic-temporal lesions were treated in the Department of Plastic Surgery, the First Affiliated Hospital of Anhui Medical University.They were treated with the lateral maxillocervical boot-shaped perforator fasciocutaneous flap to repair the wound left after lesion resection. The survival of the flap and the healing of the incision were observed after surgery and the appearance and sensation of donor and recipient sites as well as tumor recurrence were followed up.Results:(1) The pedicle of the lateral maxillocervical boot-shaped perforator fasciocutaneous flap is mainly nourished by the superficial temporal artery and its perforator.The average diameter of the maximum three perforations is (0.44±0.04) mm, (0.90±0.08) mm, (0.73±0.05) mm.The fascial vascular network and subdermal vascular network formed by perforating arteries from superficial temporal artery and branching arteries from facial artery at different layers are the anatomical basis for ensuring blood supply of lateral maxillocervical boot-shaped perforator fasciocutaneous flap. (2) A total of 12 patients with zygomatic-temporal lesions were treated clinically, including 8 males and 4 females aged 42-79 years, including 2 cases of senile sebaceous keratosis, 3 cases of squamous cell carcinoma, 1 case of skin ulcer and 6 cases of basal cell carcinoma. The range of defect after resection of the lesions was 4 cm×3 cm-9 cm×8 cm. The flap area was 5 cm×3 cm-11 cm×9 cm, the flap pedicle width was 2-3 cm, length was 2-4 cm, After surgery, the blood supply of the flap was good without necrosis, the wound were covered by first treatment. After 6-18 months of follow-up, the donor and recipient areas presented natural appearance, no swelling, no paresthesia and facial paralysis, and no recurrence of cancer.Conclusions:The lateral maxillocervical boot-shaped perforator fasciocutaneous flap pedicled with perforating branch of superficial temporal artery has reliable blood supply. Using this flap to repair large soft tissue defects in zygomatic-temporal region has the advantages of simple operation, similar color and texture, and good appearance.

Objective To realize the distribution and characteristics of Mycobacterium leprae (M.leprae) species and its single nucleotide polymorphisms (SNPs) spreading currently in China.Methods A total of 171 cutaneous lesion specimen of leprosy patients from 22 provinces were collected.The 16S rRNA conservative region of Mycobacterium leprae was amplified by nest PCR and the positive products were sequenced directly and aligned by BLAST.The SNPs of M.leprae were genotyped by restricted fragment length polymorphism for the PCR products.Results The 171 specimen were all Mycobacterium leprae since the amplified fragments of DNA samples were 99％ similar to the Br4923 of M.leprae from Brazil.No new species (M.lepromatosis) was found.Among the 85 samples genotyped for SNPs,SNP3,SNP1 and SNP2 accounted for 78.8％ (67/85),20％ (17/85) and 1.2％ (1/85) respectively.There was no sample with SNP4 genotype to be detected.Among the 171 sequencing specimen,130 showed mutation C-T at 251 bp of 16S rRNA.There was no difference for mutant rate of 16S rRNA gene and SNP genotype among the samples with different clinical pathological types.Certain associations between 16S rRNA C251T mutation and SNP genotype were found.Most of the samples with C251T mutations of 16S rRNA sequence were SNP3,only a few were SNP1 but not SNP2.There was significant difference of SNP genotype distribution among the patients from different regions.The distribution rate of SNP3 genotype in the samples from inland region (97.1％,34/35)was significantly higher than that from coastal region (66％,33/50) (x2 =11.96,P ＜ 0.01) . There was significant difference of the gene mutation rate of 16S rRNA sequence among the patients from different regions.The mutation rate of 16S rRNA in the samples from inland region (94.8％,92/97) was significantly higher than that from coastal region (51.4％,38/74) (x2 =43.56,P ＜0.01).Conclusion C251T mutation in 16S rRNA gene sequence of M.leprae may associate with SNP type suggesting that the characteristics of geographical distribution presented in different genotypes of M.leprae.No new species of M.leprae was found in this study.

Objective:To explore the treatment of levator complex in conjoint fascial sheath suspension correction on severe ptosis, and to seek a reliable and less complications operation.Methods:From October 2016 to February 2020, 40 eyes of 24 patients with severe ptosis (6 males and 18 females, aged from 10 to 73 years, with an average of 34.4 years) were divided into study group and control group. 20 eyes in study group were treated with combined fascia sheath suspension and levator palpebrae muscle complex tension-free shortening correction, while 20 eyes in control group were treated with combined fascia sheath suspension and levator palpebrae muscle complex tension-free shortening correction The effects and complications of the two groups were compared.Results:Follow-up studies were conducted at 1 week, 3 month and 6 months after operation. There was no significant difference between the two methods at different time points after operation, and the incidence of complications in the study group was less than that in the control group at 1 week after operation.Conclusions:Combined with fascial sheath suspension and levator palpebrae muscle complex tension-free shortening in the treatment of severe blepharoptosis has less complications and reliable curative effect in the early postoperative period, but it still needs to be improved to obtain more lasting curative effect.

Objective:To explore the feasibility of auxiliary conjunctival approach technique in the correction of severe ptosis with upper eyelid conjoint fascial sheath (CFS) technique.Methods:The clinical data of patients with severe blepharoptosis who were treated in the Department of Plastic Surgery of the Second People’s Hospital of Hefei with CFS technology using auxiliary conjunctival approach (January to December 2021) or corneal protective plate technology (January to December 2020) were analyzed retrospectively. The patients were divided into group Ⅰ (using the auxiliary conjunctival approach) and group Ⅱ( using the corneal protection plate technique). The total operation time, CFS exposure time, postoperative tumescence time and complications of the two groups were recorded, and the postoperative patient satisfaction was investigated. The measurement data of normal distribution were expressed as Mean±SD, and independent sample t-test was used for comparison between the two groups. Counting data were analyzed by Chi-square test. Results:A total of 43 cases of severe blepharoptosis were included. There were 25 cases(47 eyes) in group Ⅰ, aged (55.1±10.0) years, including 3 males and 22 females. The amount of blepharoptosis was (5.9±0.9) mm. There were 18 cases(34 eyes) in group Ⅱ, aged (49.9±12.7) years, including 4 males and 14 females. The amount of ptosis was (5.5±1.2) mm. There were no significant differences in age, gender composition and ptosis between the two groups ( P>0.05). The CFS exposure time [(15.6 ± 2.8) min vs. (27.3 ± 5.3) min] and the total operation time [(28.3 ± 3.9) min vs. (48.6 ± 8.2) min] in group Ⅰ were significantly less than those in group Ⅱ, with significant differences ( P<0.01). The postoperative tumescence time in group Ⅰ was significantly shorter than that in group Ⅱ [(13.5 ± 2.4) days vs. (30.2 ± 4.5) days, P<0.01]. The incidence of complications in group Ⅰ was significantly lower than that in group Ⅱ [6.38% (3/47) vs. 26.47% (9/34), P<0.05]. The postoperative satisfaction rate in group Ⅰ was higher than that in group Ⅱ [88.00% (22/25) vs. 55.56% (10/18), P<0.05]. Conclusion:The use of auxiliary conjunctival approach separation technology is effective for dissection of CFS in correction of severe blepharoptosis, so as to reduce the operation time and the incidence of postoperative complications.

Objective:To investigate the clinical effect of local perforator advancement flap in repairing mid-face soft tissue defects and its correlation between with the three dimensional configuration of the skin ligament.Methods:1) 12 fresh adult cadaver specimens (7 males, 5 females, aged 54-87 years) were selected. After dehydration and degreasing of the cadaver head with acetone, plasticized and sliced with a fully transparent ultra-thin layer of epoxy resin, using a Leica MZ8 stereo microscope and a Leica DFC295 digital camera to observe and analyze the prepared slices, and observe the differences in the three-dimensional structural characteristics of the cutaneous ligaments in different parts of the midface (cheek, nose, orbital eyelid) . (2) A retrospective analysis was made of the case data of midface soft tissue defects admitted to the Plastic Surgery Department of the First Affiliated Hospital of Anhui Medical University from January 2015 to October 2021. All patients were repaired with local perforator advancement flap. The Pearson bivariate correlation test was used to analyze the correlation among flap advancement distance, flap area, flap aspect ratio, and defect size. The Kruskal-Wallis test was used to analyze the differences of flap area and flap aspect ratio in different parts of the midface.Results:1) Anatomical studies have shown that the running direction of the facial skin ligaments is the same as that of the expressive muscles, and their three-dimensional structures at the upper eyelid and the nasal and facial corners of the upper nasal alar are different. The upper eyelid skin ligaments run along the eyelid, while the upper nasal The supracutaneous ligaments run down the alar of the nose. (2) The clinical study included 18 patients, 8 males and 10 females, aged (65.1±22.9) years. The flaps of 18 patients survived after operation, the flap area was (13.85±9.38) cm 2, and the advancing distance was (1.94±0.75) cm. Statistical analysis showed that there was a correlation between the flap advancement distance and the flap incision area ( r=-0.712, P=0.022) and the flap aspect ratio ( r=-0.580, P =0.012). There was no correlation with the defect area ( r=-0.227, P=0.365) ; the aspect ratios of the cheek, nose and orbital lid flaps were 2.06±0.42 , 2.50±1.18, 3.25±0.93, and the differences were statistically significant ( H= 6.59, P=0.037). Conclusions:The local perforator advancement flap is an ideal method for repairing midface soft tissue defects. The differences in the construction of the skin ligaments in different parts of the mid-face will affect the ease of advancement of the flaps and other characteristics in each part, which may be the reasons for affecting the aspect ratio of the flap design.

Objective:To investigate the clinical effect of local perforator advancement flap in repairing mid-face soft tissue defects and its correlation with the three-dimensional configuration of the skin ligament.Methods:(1) Tweleve fresh adult cadaver specimens, including seven males and five females, aged 54-87 years old, were selected. After dehydration and degreasing of the cadaver head with acetone, plasticized and sliced with a fully transparent ultra-thin layer of epoxy resin, using a Leica MZ8 stereo microscope and a Leica DFC295 digital camera to observe and analyze the prepared slices and observe the differences in the three-dimensional structural characteristics of the cutaneous ligaments in different parts of the mid-face (cheek, nose, orbital eyelid). (2) A retrospective study was conducted with the data of mid-face soft tissue defects admitted to the Department of Plastic Surgery of the First Affiliated Hospital of Anhui Medical University from January 2015 to October 2021. All patients were repaired with local perforator advancement flaps. The Pearson bivariate correlation test was used to analyze the correlation among flap advancement distance, flap area, flap aspect ratio, and defect size. The Kruskal-Wallis test was used to analyze the differences in flap size and aspect ratio in different parts of the mid-face. The measurement data were described by Mean±SD or M( Q1, Q3). Results:(1) Anatomical studies have shown that the running direction of the facial skin ligaments is the same as that of the expressive muscles, and their three-dimensional structures at the upper eyelid and the nasal and facial corners of the upper nasal alar are different. The upper eyelid skin ligaments run along the eyelid, while the upper nasal cutaneous ligaments run down the nose alar. (2) The clinical study included 18 patients, including eight males and ten females, aged (64.6±23.4) years old. All flaps survived uneventfully. The average flap size was 10.6(8.0, 18.0) cm 2, and the average advancing distance was 2.8(2.0, 4.0) cm. Statistical analysis showed a correlation between the flap advancement distance, the flap incision area ( r=-0.71, P=0.022), and the flap aspect ratio ( r=-0.58, P=0.012). There was no correlation with the defect area ( r=-0.23, P=0.365); the aspect ratios of the cheek, nose, and orbital lid flaps were 2.1(1.9, 2.3), 2.0(1.6, 3.5), 3.5(3.0, 4.0), and the differences were statistically significant ( H=6.59, P=0.037). Conclusions:The local perforator advancement flap is an ideal method for repairing mid-face soft tissue defects. The differences in the construction of the skin ligaments in different parts of the mid-face will affect the ease of advancement of the flaps and other characteristics in each part, which may be the reasons for affecting the aspect ratio of the flap design.

Objective:To explore the feasibility of auxiliary conjunctival approach technique in the correction of severe ptosis with upper eyelid conjoint fascial sheath (CFS) technique.Methods:The clinical data of patients with severe blepharoptosis who were treated in the Department of Plastic Surgery of the Second People’s Hospital of Hefei with CFS technology using auxiliary conjunctival approach (January to December 2021) or corneal protective plate technology (January to December 2020) were analyzed retrospectively. The patients were divided into group Ⅰ (using the auxiliary conjunctival approach) and group Ⅱ( using the corneal protection plate technique). The total operation time, CFS exposure time, postoperative tumescence time and complications of the two groups were recorded, and the postoperative patient satisfaction was investigated. The measurement data of normal distribution were expressed as Mean±SD, and independent sample t-test was used for comparison between the two groups. Counting data were analyzed by Chi-square test. Results:A total of 43 cases of severe blepharoptosis were included. There were 25 cases(47 eyes) in group Ⅰ, aged (55.1±10.0) years, including 3 males and 22 females. The amount of blepharoptosis was (5.9±0.9) mm. There were 18 cases(34 eyes) in group Ⅱ, aged (49.9±12.7) years, including 4 males and 14 females. The amount of ptosis was (5.5±1.2) mm. There were no significant differences in age, gender composition and ptosis between the two groups ( P>0.05). The CFS exposure time [(15.6 ± 2.8) min vs. (27.3 ± 5.3) min] and the total operation time [(28.3 ± 3.9) min vs. (48.6 ± 8.2) min] in group Ⅰ were significantly less than those in group Ⅱ, with significant differences ( P<0.01). The postoperative tumescence time in group Ⅰ was significantly shorter than that in group Ⅱ [(13.5 ± 2.4) days vs. (30.2 ± 4.5) days, P<0.01]. The incidence of complications in group Ⅰ was significantly lower than that in group Ⅱ [6.38% (3/47) vs. 26.47% (9/34), P<0.05]. The postoperative satisfaction rate in group Ⅰ was higher than that in group Ⅱ [88.00% (22/25) vs. 55.56% (10/18), P<0.05]. Conclusion:The use of auxiliary conjunctival approach separation technology is effective for dissection of CFS in correction of severe blepharoptosis, so as to reduce the operation time and the incidence of postoperative complications.

Objective:To investigate the clinical effect of local perforator advancement flap in repairing mid-face soft tissue defects and its correlation between with the three dimensional configuration of the skin ligament.Methods:1) 12 fresh adult cadaver specimens (7 males, 5 females, aged 54-87 years) were selected. After dehydration and degreasing of the cadaver head with acetone, plasticized and sliced with a fully transparent ultra-thin layer of epoxy resin, using a Leica MZ8 stereo microscope and a Leica DFC295 digital camera to observe and analyze the prepared slices, and observe the differences in the three-dimensional structural characteristics of the cutaneous ligaments in different parts of the midface (cheek, nose, orbital eyelid) . (2) A retrospective analysis was made of the case data of midface soft tissue defects admitted to the Plastic Surgery Department of the First Affiliated Hospital of Anhui Medical University from January 2015 to October 2021. All patients were repaired with local perforator advancement flap. The Pearson bivariate correlation test was used to analyze the correlation among flap advancement distance, flap area, flap aspect ratio, and defect size. The Kruskal-Wallis test was used to analyze the differences of flap area and flap aspect ratio in different parts of the midface.Results:1) Anatomical studies have shown that the running direction of the facial skin ligaments is the same as that of the expressive muscles, and their three-dimensional structures at the upper eyelid and the nasal and facial corners of the upper nasal alar are different. The upper eyelid skin ligaments run along the eyelid, while the upper nasal The supracutaneous ligaments run down the alar of the nose. (2) The clinical study included 18 patients, 8 males and 10 females, aged (65.1±22.9) years. The flaps of 18 patients survived after operation, the flap area was (13.85±9.38) cm 2, and the advancing distance was (1.94±0.75) cm. Statistical analysis showed that there was a correlation between the flap advancement distance and the flap incision area ( r=-0.712, P=0.022) and the flap aspect ratio ( r=-0.580, P =0.012). There was no correlation with the defect area ( r=-0.227, P=0.365) ; the aspect ratios of the cheek, nose and orbital lid flaps were 2.06±0.42 , 2.50±1.18, 3.25±0.93, and the differences were statistically significant ( H= 6.59, P=0.037). Conclusions:The local perforator advancement flap is an ideal method for repairing midface soft tissue defects. The differences in the construction of the skin ligaments in different parts of the mid-face will affect the ease of advancement of the flaps and other characteristics in each part, which may be the reasons for affecting the aspect ratio of the flap design.

Objective:To investigate the clinical effect of local perforator advancement flap in repairing mid-face soft tissue defects and its correlation with the three-dimensional configuration of the skin ligament.Methods:(1) Tweleve fresh adult cadaver specimens, including seven males and five females, aged 54-87 years old, were selected. After dehydration and degreasing of the cadaver head with acetone, plasticized and sliced with a fully transparent ultra-thin layer of epoxy resin, using a Leica MZ8 stereo microscope and a Leica DFC295 digital camera to observe and analyze the prepared slices and observe the differences in the three-dimensional structural characteristics of the cutaneous ligaments in different parts of the mid-face (cheek, nose, orbital eyelid). (2) A retrospective study was conducted with the data of mid-face soft tissue defects admitted to the Department of Plastic Surgery of the First Affiliated Hospital of Anhui Medical University from January 2015 to October 2021. All patients were repaired with local perforator advancement flaps. The Pearson bivariate correlation test was used to analyze the correlation among flap advancement distance, flap area, flap aspect ratio, and defect size. The Kruskal-Wallis test was used to analyze the differences in flap size and aspect ratio in different parts of the mid-face. The measurement data were described by Mean±SD or M( Q1, Q3). Results:(1) Anatomical studies have shown that the running direction of the facial skin ligaments is the same as that of the expressive muscles, and their three-dimensional structures at the upper eyelid and the nasal and facial corners of the upper nasal alar are different. The upper eyelid skin ligaments run along the eyelid, while the upper nasal cutaneous ligaments run down the nose alar. (2) The clinical study included 18 patients, including eight males and ten females, aged (64.6±23.4) years old. All flaps survived uneventfully. The average flap size was 10.6(8.0, 18.0) cm 2, and the average advancing distance was 2.8(2.0, 4.0) cm. Statistical analysis showed a correlation between the flap advancement distance, the flap incision area ( r=-0.71, P=0.022), and the flap aspect ratio ( r=-0.58, P=0.012). There was no correlation with the defect area ( r=-0.23, P=0.365); the aspect ratios of the cheek, nose, and orbital lid flaps were 2.1(1.9, 2.3), 2.0(1.6, 3.5), 3.5(3.0, 4.0), and the differences were statistically significant ( H=6.59, P=0.037). Conclusions:The local perforator advancement flap is an ideal method for repairing mid-face soft tissue defects. The differences in the construction of the skin ligaments in different parts of the mid-face will affect the ease of advancement of the flaps and other characteristics in each part, which may be the reasons for affecting the aspect ratio of the flap design.