1.Reconstruction of great toe skin defect with retrograde-flow medial pedis island flap used transverse artery of great toe
Haijiao MAO ; Zengyuan SHI ; Dachuan XU ; Weigang YIN
Chinese Journal of Microsurgery 2014;37(3):246-249
Objective To explore the methods of repairing great toe soft tissue defect with the reverse medial pedis island flap with transverse artery of great toe.Methods This study was made up of two parts:an anatomical study and clinical application.In the anatomical study,49 cadaveric feet were injected with red latex and then anostomosis,distribution and external diameters of transverse artery of great toe,the deep branches of the first plantar metatarsal arteries and the deep branches of medial plantar artery were observed.From September 2006 to December 2012,8 cases of soft-tissue defects with the retrograde-flow medial pedis island flaps were harvested to cover the soft tissue defects of great toe.Soft tissue defect was form 2.5 cm × 3.5 cm-3.5 × 4.5 cm.Results There was an arterial circle under the first metatarsophalangeal joint which consisted of transverse artery of great toe,tibial proper plantar digital artery of great toe,fibular proper plantar digital artery of great toe and the distal part of first plantar metatarsal artery.This arterial circle under the first metatarsophalangeal joint and arterial network on the surface of abductor hallucis was responsible for the blood supply of the flap of medial pedis.The diameter of the pedicle was great,and the length of the pedicle was longer than in previous reported.In terms of clinical application,all patients were followed up with the mean of 10 months (range fromn 6-24 months).All flaps survived totally without diabrosis and swelling.The walking and weight-bearing were normal and the blood supply of foot was good.Conclusion Using of arterial circle under the first metatarsophalangeal joint,the medial pedis island flap has a reliable retrograde blood supply.The reverse point of the reverse medial pedis flap moved forward to th interphalangeal joint.This flap should be considered as a preferential way to reconstruct soft-tissue defects of the great toe.
2.The proximal crescentic osteotomy of the first metatarsal bone combined distal soft tissue reconstruction to treat severe hallux valgus.
Haijiao MAO ; Zengyuan SHI ; Wenwei DONG ; Dachuan XU ; Wapner KEITH
Chinese Journal of Plastic Surgery 2015;31(5):347-351
OBJECTIVETo explore the method of the treatment for hallux valgus with the proximal crescentic osteotomy of the first metatarsal bone, combining with distal lateral soft tissue release.
METHODSFrom January 2008 to December 2012, 21 cases 21 hallux valgus feet were treated by operative procedure, included 1 male (1 foot) and 20 females (20 feet), with the mean age of 52 years (range, 36-68 years). Among all patients were followed up for 12 to 26 months, with the mean 16 months. The preoperative, post-operative and final follow-up X-ray films of all patients were collected. The hallux valgus angle, intermetatarsal angle and distal metatarsal articular angle were measured and analyzed. The surgical outcome was evaluated combined with the AOFAS score.
RESULTSThe average hallux valgus angle decreased from 42.3° ± 1.8° preoperatively to 14.5° ± 1.8 postoperatively, the average intermetatarsal angle did from 21.9° ± 1.7 to 9.1° ± 1.8°, and the average distal metatarsal articular angle did from 14.9° ± 1.8 to 7.2° ± 1.5, respectively. There were significant differences between the preoperative and postoperative roentgenographic index. AOFAS score was improved from 44.0 ± 1.8 preoperatively to 83.9 ± 2.2 at the final follow-up.
CONCLUSIONSThe proximal crescentic osteotomy of the first metatarsal bone combined distal soft tissue reconstruction obtained satisfactory results in severe hallux valgus patients with big intermetatarsal angle.
Adult ; Aged ; Dermatologic Surgical Procedures ; methods ; Female ; Hallux Valgus ; surgery ; Humans ; Male ; Metatarsal Bones ; surgery ; Middle Aged ; Osteotomy ; methods
3.The anatomy and clinical application of reverse saphenous nerve neurocutaneous flaps for reparing skin defects of forefoot.
Haijiao MAO ; Zengyuan SHI ; Weigang YIN ; Dachuan XU ; Zhenxin LIU
Chinese Journal of Plastic Surgery 2015;31(1):25-29
OBJECTIVETo investigate the effect of reverse saphenous nerve neurocutaneous flaps for skin defects of forefoot.
METHODSIn the anatomic study, 50 cadaveric feet were injected with red latex and the anastomosis, distribution and external diameters of medialtarsal artery, medial anterior malleolus artery, medial plantar artery, the superficial branch of the medial basal hallucal artery and saphenousnerve nutritional vessels were observed. Based on anatomic research results, we designed the reverse saphenous nerve neurocutaneous flaps for repairing skin defects of forefoot.
RESULTSThe blood supply of reverse saphenous nerve neurocutaneous flaps were based on the vasoganglion, which consist of arterial arch at the superior border of abductor hallucis and arterial network on the surface of abductor hallucis around the saphenous nerve and medial pedis flap. From Oct. 2006 to Oct. 2011, the reverse saphenous nerve neurocutaneous flaps were used to repair skin defects of forefoot in 11 cases. The flap size ranged from 2.5 cm x 3.5 cm to 7.5 cm x 8.5 cm. The wounds at donor site were covered with full-thickness skin graft. All flaps survived completely with no ulcer at the donor site. 11 cases were followed up for 6 to 18 months( mean, 10 months). The skin color and texture were satisfactory. The patients could walk very well.
CONCLUSIONSIt is reliable to repair the skin defects of forefoot with reverse saphenous nerve neurocutaneous flaps. It is easily performed with less morbidity. This flap should be considered as a preferential way to reconstruct skin defects of forefoot.
Arteries ; anatomy & histology ; Cadaver ; Female ; Foot ; blood supply ; innervation ; Forefoot, Human ; injuries ; surgery ; Humans ; Male ; Muscle, Skeletal ; anatomy & histology ; Reconstructive Surgical Procedures ; Skin Transplantation ; methods ; Surgical Flaps ; blood supply ; innervation ; Transplant Donor Site ; surgery
4.Research on the construction of the 5 +3 integrated clinical medical personnel training objective system
Haiyan LI ; Bing BAI ; Dachuan MAO ; Tao SUN ; Hai XIAO ; Libin YANG ; Depin CAO
Chinese Journal of Medical Education Research 2016;15(4):337-342
Objective To construct the objective system of 5+3 integrated clinical medicine personnel training mode.Methods For the attitude,knowledge and ability clinical medical students should have,who received 5+3 integrated training,we adopted literature research,expert interviews intending to make a preliminary questionnaire items,and invited experts and graduates to modify the expressions of the items a number of times,and eventually formed the final questionnaire that met the study objective.We asked 500 teachers in basic medicine,clinical medicine,and medical humanities and so on,to evaluate the importance of the questionnaire.406 valid questionnaires were recovered and the effective recovery rate was 81.2%.Epidata 3.1 and SPSS 19.0 were used for survey data summary statistics,exploratory factor analysis and factor weighting method were used to get the goal of talent training base,and on these basis target system was constructed.Results In 5+3 integrated medical education model,clinical medical personnel training target system included knowledge,attitude and ability of the part,a total of 9 target groups.Each group contained elements in the training target system for different weights,among which attitude included a common factor,proportion of 27.51%;knowledge consisted of three factors,the proportion of 29.34%;and the ability contained five common factors,accounting for highest proportion of 43.15%.Conclusion 5+3 integrated clinical medical talents training target system established in this study highlights the ability requirements,emphasizes the comprehensive quality training,which accords with the principles of talent training goal and the requirements of 5+3 medical education model,has certain guiding significance for the curriculum reform,and can be used for reference in the development of talents training program for medical colleges and universities.
5.The anatomy and clinical applications of flexor hallucis longus tendon transfer in treatment of chronic Achilles tendinopathy
Haijiao MAO ; Zengyuan SHI ; Wenwei DONG ; Dachuan XU ; Wapner KEITH
Chinese Journal of Microsurgery 2017;40(5):472-477
Objective To evaluate the effectiveness of flexor hallucis longus tendon transfer in treatment of chronic Achilles tendinopathy using different technique.Methods Sixty-four embalmed feet of 32 cadavers were analyzed and classified anatomically with respect to the individual cross links in the Henry's knot.These three techniques were then combined to determine the total potential tendon graft length obtainable using single incision,double incision and minimally invasive incision.From January,2012 to June,2015,10 patients (10 feet) with chronic Achilles tendinopathy were treated with double incision technique.The score was 63.04 ±7.75 according to American Orthopedic Foot and Ankle Society (AOFAS) ankle and hindfoot score system.Results Only two different configurations were found.Type 1,a tendinous slip branched from the FHLT to the FDLT was 96.9%(62 of 64 feet).Type 2,a slip branched from the FHLT to the FDLT and another slip from the FDLT to FHLT was 3.1%(2 of 64).The average length of the FHLT graft available from a single incision measured (5.08±1.09)cm,double incision technique measured (6.72 ± 1.02) cm,and minimally invasive incision measured (17.49 ± 1.80)cm.The difference between the lengths obtained from these three techniques was statistically significant.Ten patients were followed-up 12-36 months (mean,13.7 months).At 12 months after operation,the AOFAS ankle and hindfoot score was 93.28 ± 3.72,showing significant difference when compared with that before operation.The results were excellent in 6 cases,good in 3 cases,and fair in 1 case with an excellent and good rate of 90%.No sural nerve injury,posterior tibial nerve injury,medial plantar nerve injury,and lateral plantar nerve injury occurred.Conclusion In over 96 % of the feet,a proximal to distal connection from the FHLT to the FDLT was found,which might contribute to the residual function of the lesser toes after FDLT transfer.The distal stump of the FHLT tendon should be sutured onto the FDLT tendon under tension to en able a co-activation of the great toe,preserved hallux plantar flexion.Chronic Achilles tendinopathy reconstruction with flexor hallucis longus tendon harvested using double incision technique offers a desirable outcome in operative recovery,tendon fixation,preserved hallux plantar flexion and less complications.
6.Influencing factors for hierarchical medical system:interpretative structural modeling
Dexin MENG ; Shu′e ZHANG ; Chao FAN ; Yifu RU ; Haiyan LI ; Yu SHI ; Fengzhe XIE ; Libin YANG ; Mohan CHI ; Dachuan MAO ; Tao SUN
Chinese Journal of Hospital Administration 2016;32(7):481-484
Objective To build a multi‐level hierarchical structure model of the influencing factors for hierarchical medical system ,to identify the role relationship between all the factors and transmission pathways ,and to recommend on developing China′s hierarchical medical system . Methods Thirty influencing factors were identified in a screening based on literature review for the hierarchical medical system .On such basis ,16 influencing factors were identified by three health policy experts ,which affect operations of the current system .Interpretative structural modeling was called into play in the end to analyze the hierarchy relationship between various influencing factors and the conduction loops .Results There exist among the 16 factors a 3‐level hierarchical structureand two conduction loops .The factor directly limiting the hierarchical medical system is two‐way referral,and most internal core drivers arehuman resources development and governance mechanism.By means of self‐growth and external constraints ,they exert their influence on the operation of hierarchical medical system .Conclusions There are interactive hierarchical effects among the factors ,merging into three node elements of functional role,inter‐entity relationshipand patient participation.
7.Role of interferon alpha in the management of severe acute pancreatitis.
Yaoqing TANG ; Dachuan QI ; Jun WU ; Enqiang MAO ; Jun JI ; Tianquan HAN ; Shendao ZHANG
Chinese Journal of Surgery 2002;40(2):146-149
OBJECTIVETo investigate the efficacy of IFN-alpha on severe acute pancreatitis (SAP) of IFN-alpha.
METHODSA SAP model was developed in adult male rats by retrograde injection of 5% sodium taurocholate in the pancreatic duct. Serum amylase was measured by the blue-starch method and serum cytokines were determined by ELISA.
RESULTSCompared with to the control group, less pancreatic injury and lower amylase level were observed treat in the rats with IFN-alpha. In contrast, the concentration of IL-10 was higher.
CONCLUSIONIFN-alpha has significant curative effect on SAP.
Animals ; Disease Models, Animal ; Immunologic Factors ; therapeutic use ; Interferon-alpha ; therapeutic use ; Interleukin-10 ; metabolism ; Kidney ; metabolism ; Male ; Pancreatitis, Acute Necrotizing ; drug therapy ; metabolism ; pathology ; Rats ; Rats, Sprague-Dawley ; Tumor Necrosis Factor-alpha ; metabolism
8.The proximal crescentic osteotomy of the first metatarsal bone combined distal soft tissue reconstruction to treat severe hallux valgus
Haijiao MAO ; Zengyuan SHI ; Wenwei DONG ; Dachuan XU ; Wapner KEITH
Chinese Journal of Plastic Surgery 2015;31(5):346-351
Objective To explore the method of the treatment for hallux valgus with the proximal crescentic osteotomy of the first metatarsal bone,combining with distal lateral soft tissue release.Methods From January 2008 to December 2012,21 eases 21 hallux valgus feet were treated by operative procedure,included 1 male (1 foot) and 20 females(20 feet),with the mean age of 52 years (range,36-68 years).Among all patients were followed up for 12 to 26 months,with the mean 16 months.The preoperative,postoperative and final follow-up X-ray films of all patients were collected.The hallux valgus angle,intermetatarsal angle and distal metatarsal articular angle were measured and analyzed.The surgical outcome was evaluated combined with the AOFAS score.Results The average hallux valgus angle decreased from 42.3° ± 1.8° preoperatively to 14.5° ± 1.8° postoperatively,the average intermetatarsal angle did from 21.9°±1.7° to 9.1° ± 1.8°,and the average distal metatarsal articular angle did from 14.9° ± 1.8° to 7.2°± 1.5°,respectively.There were significant differences between the preoperative and postoperativeroentgenographic index.AOFAS score was improved from 44.0 ± 1.8 preoperatively to 83.9 ± 2.2 at thefinal follow-up.Conclusions The proximal crescentic osteotomy of the first metatarsal bone combineddistal soft tissue reconstruction obtained satisfactory results in severe hallux valgus patients with bigintermetatarsal angle.
9.The proximal crescentic osteotomy of the first metatarsal bone combined distal soft tissue reconstruction to treat severe hallux valgus
Haijiao MAO ; Zengyuan SHI ; Wenwei DONG ; Dachuan XU ; Wapner KEITH
Chinese Journal of Plastic Surgery 2015;31(5):346-351
Objective To explore the method of the treatment for hallux valgus with the proximal crescentic osteotomy of the first metatarsal bone,combining with distal lateral soft tissue release.Methods From January 2008 to December 2012,21 eases 21 hallux valgus feet were treated by operative procedure,included 1 male (1 foot) and 20 females(20 feet),with the mean age of 52 years (range,36-68 years).Among all patients were followed up for 12 to 26 months,with the mean 16 months.The preoperative,postoperative and final follow-up X-ray films of all patients were collected.The hallux valgus angle,intermetatarsal angle and distal metatarsal articular angle were measured and analyzed.The surgical outcome was evaluated combined with the AOFAS score.Results The average hallux valgus angle decreased from 42.3° ± 1.8° preoperatively to 14.5° ± 1.8° postoperatively,the average intermetatarsal angle did from 21.9°±1.7° to 9.1° ± 1.8°,and the average distal metatarsal articular angle did from 14.9° ± 1.8° to 7.2°± 1.5°,respectively.There were significant differences between the preoperative and postoperativeroentgenographic index.AOFAS score was improved from 44.0 ± 1.8 preoperatively to 83.9 ± 2.2 at thefinal follow-up.Conclusions The proximal crescentic osteotomy of the first metatarsal bone combineddistal soft tissue reconstruction obtained satisfactory results in severe hallux valgus patients with bigintermetatarsal angle.