Objective To investigatethe anatomic structure of the compound flap of distally-based saphenous nervegreat saphenous vein nutritional vessels so as to provide anatomic basis for the clinical operation. Methods The origin, branches, anastomosis of nutritional vessels of sural nerve-great saphenous vein, and the relationof blood supply of tibia and soleus muscle were observed on 30 low limb specimens of adult cadaver, which were perfused with red gelatin to dissect from the artery. Results The nutritional vessels of sural nerve-great saphenous vein originated from: the saphenous artery 3-5 branches with a diameter of 0.7±0.4 mm；the cutaneous branches of medial inferior genicular artery, diameter of 0.7±0.2 mm；the intermuscular space perforating branches of posterior tibial artery 2-7 branches with a diameter of 1.0±0.2 mm，the internus halfside of the muscular branches nutrient soleus muscle；the perforating osteoseptocutaneous 1-2 branches with a diameter of 1.3±0.3 mm; the perforating branches of superior malleolus with a diameter of 0.6±0.2 mm; the perforating branches of medial anterior malleolus with a diameter of 0.8±0.3 mm. A vascularnetwork of 3 layers, which included periosteum, deep artery, and fascia nerve and superficial vein, was formed by those branches of deep artery, fascia branches, periosteum branches, and nerve-vein nutrition branches. Conclusion The nutritional vessels of saphenous nerve-great saphenous vein has the same origin as muscles, bones, and cutaneous nutritional vessels. It provides anatomic basis for the compound flap of distally-based saphenous nerve nutritional vessels.
External support stent is a potential means for restricting the deformation and reducing wall stress of the vein graft, thereby improving the long-term patency of the graft in coronary artery bypass surgery. However, there still lacks a theoretical reference for choosing the size of stent based on the diameter of graft. Taking the VEST (venous external support) stent currently used in the clinical practice as the object of study, we constructed three models of VEST stents with different diameters and coupled them respectively to a model of the great saphenous vein graft, and numerically simulated the expansion-contraction process of the vein graft under the constraint of the stents to quantitatively evaluate the influence of stent size on the radial deformation and wall stress of the vein graft. The results showed that while the stent with a small diameter had a high restrictive effect in comparison with larger stents, it led to more severe concentration of wall stress and sharper changes in radial deformation along the axis of the graft, which may have adverse influence on the graft. In order to solve the aforementioned problems, we ameliorated the design of the stent by means of changing the cross-sectional shape of the thick and thin alloy wires from circle into rectangle and square, respectively, while keeping the cross-sectional areas of alloy wires and stent topology unchanged. Further numerical simulations demonstrated that the ameliorated stent evidently reduced the degrees of wall stress concentration and abrupt changes in radial deformation, which may help improve the biomechanical environment of the graft while maintaining the restrictive role of the stent.
ObjectiveTo observe the efficiency of endovenous laser therapy combined with planning sucking operation in the treatment of great saphenous varicose veins. MethodsTotally 48 patients (60 limbs) were treated from May 2011 to May 2014 in general surgery department of our hospital. The main trunk of great saphenous vein was ablated by endovenous laser treatment; and the varicose veins in calf were resected by planning sucking operation. ResultsAll 48 patients (60 limbs) were cured without recurrent during 6-36 months followed-up. The operative time of each side was 18-43 min, the average operative time was 22.6 min; with 1-3 skin incisions. Hospital stay was 5-8 d, the average hospitalization time was 6.7 d. After operation, the varicose veins and the felling of swelling were disappeared, the pigmentation was reduced or disappeared. Local skin numbness showed in 6 cases and recovered in 3-7 months after operation. Felling of burns appeared in 2 cases, and was healed after treatment. Ankle swelling presented in 5 cases, and released in 6-13 d with related treatment. Different degree of subcutaneous bruising appeared without any hematoma, and recovered in 2-4 weeks. Two cases were lost during the followed-up. ConclusionsEndovenous laser therapy combined with planning sucking operation is safe and effective in the treatment of great saphenous varicose. It is worthy of promotion with minimum damage, less pain, fast recovery, no scars, shorter operative time, and shorter hospital stay.
Objective To provide the anatomic basis for defect repair of the knee, leg, foot and ankle with great saphenous venosaphenous neurocutaneous vascular island flaps. Methods The origin, diameter, branches, distribution and anatomoses of the saphenous artery and saphenous neurocutaneous vascular were observed on 20 sides of adult leg specimens and 4 fresh cadaver voluntary legs. Another4 fresh cadaver voluntary legs were radiogeaphed with a soft X-ray system afterthe intravenous injection of Vermilion and cross-sections under profound fascial, otherhand, micro-anatomic examination was also performed in these 4 fresh cadaver legs. The soft tissue defects in lower extremity,upper extremity, heel or Hucou in handwere repaired with the proximal or distal pedicle flaps or free flaps in 18 patients(12 males and 6 females,aging from 7 to 3 years). The defect was caused by trauma, tumour, ulcer and scar.The locations were Hucou (1 case), upper leg(3 cases), lower extremity and heal (14 cases). Of then, 7 cases were complicatedby bone exposure, 3 cases by tendon exposure and 1 case by steel expouse. the defect size were 4 cm×4 cm to 7 cm×13 cm. The flap sizes were 4 cm×6 cm to 8 cm×15 cm, which pedicle length was 8-11 cm with 2.-4.0 cm fascia and 12 cm skin at width. Results Genus descending genicular artery began from 9.33±0.81 cm away from upper the condylus medialis, it branched saphenous artery accompanying saphenous nerve descendent. And saphenous artery reached the surface of the skin 7.21±0.82 cm away from lower the condylus medialis,and anastomosed with the branches of tibialis posterior artery, like “Y” or “T” pattern. The chain linking system of arteries were found accompanying along the great saphenous vein as saphenous nerve, and then a axis blood vessel was formed. The small artery of only 00-0.10 mm in diameter, distributed around the great saphenousvein within 58 mm and arranged parallelly along the vein like water wave in soft X-ray film. All proximal flaps,distal pedicle flaps and free flaps survived well. The appearance, sensation and function were satisfactory in 14 patientsafter a follow-up of 6-12 months. Conclusion The great saphenous vein as well as saphenous neurocutaneous has a chain linking system vascular net. A flap with the vascular net can be transplanted by free, by reversed pedicle, or by direct pedicle to repair the wound of upper leg and foot. A superficial vein-superficial neurocutaneous vascular flap with abundance blood supply and without sacrificing a main artery is a favouriate method in repair of soft tissue defects in foot and lower extremity.
Objective To summarize the treatment outcomes of antegrade sequential anastomosis of great saphenous veins in off-pump coronary artery bypass grafting for coronary atherosclerotic heart disease. Methods A total of 116 patients with coronary atherosclerotic heart diseases underwent off-pump coronary artery bypass grafting from January 2013 to June 2015 in our hospital. There were 63 males and 53 females with a mean age of 42–80 (64.26±9.67) years. Left internal mammary artery was anastomosed to left anterior descending artery. The rest of the target vessels received antegrade sequential anastomosis of great saphenous veins with the order of proximal ascending aorta, diagonal branch, circumflex branch, obtuse marginal branch, left ventricular branch and posterior descending artery. Results All patients were performed off-pump coronary artery bypass grafting successfully without death or perioperative myocardial infarction. A total of 436 grafts were adopted with 3.75±0.53 in each patient. Three patients suffered low cardiac output syndrome, and were cured after administration of vasoactive drugs combined with the intra-aortic balloon pump. One patient suffered tardive pericardial tamponade and one acute renal failure, who were cured with disappearance of angina symptoms and increase of activities without discomfort. Conclusion Antegrade sequential anastomosis, as a safe and effective method, can reduce aortic stoma, save the length of grafts, shorten operative time and quickly restorate blood supply of myocardium in off-pump coronary artery bypass grafting.
Objective To investigate the distribution of the perforating branches artery of distally-based flap of sural nerve nutrient vessels and its clinical application. Methods The origins and distribution of perforating branchesartery of distally-based flap were observed on specimens of 30 adult cadavericlow limbs by perfusing red gelatin to dissect the artery.Among the 36 cases, there were 21 males, 15 females. Their ages ranged from 6 to 66, 35.2 in average. The defect area was 3.5 cm×2.5 cm to 17.0 cm×11.0 cm. The flap taken ranged from 4 cm×3 cm to 18 cm×12 cm. Results The perforating branches artery of distally-based flap had 2 to 5 branches and originated from the heel lateral artery, the terminal perforating branches of peroneal artery(diameters were 0.6±0.2 mm and 0.8±0.2 mm, 1.0±1.3 cm and 2.8±1.0 cm to the level of cusp lateral malleolus cusp).The intermuscular septum perforating branches of peroneal artery had 0 to 3 branches. Their rate of presence was 96.7%,66.7% and 20.0% respectively(the diameters were 0.9±0.3, 1.0±0.2 and 0.8±0.4 mm, andtheir distances to the level of cusp of lateral malleolus were 5.3±2.1, 6.8±2.8 and 7.0±4.0 cm). Those perforating branches included fascia branches, cutaneous branches, nerve and vein nutrient branches. Those nutrient vessels formed longitudinal vessel chain of sural nerve shaft, vessel chain of vein side and vessel network of deep superficial fascia. The distally-based superficial sural artery island flap was used in 18 cases, all flaps survived. Conclusion Distally-based sural nerve, small saphenous vein, and nutrient vessels of fascia skin have the same origin. Rotation point of flap is 3.0 cm to the cusp of lateral malleolus, when the distally-based flap is pedicled with the terminal branch of peroneal artery.Rotation point of flap is close to the cusp of lateral malleolus, when the distally-based flap is pedicled with the heel lateral artery.
Objective To evaluate improved effect for deep venous valve function after superficial vein surgery of lower extremity in the intermediate stage. Methods Totally 43 patients (55 limbs) with varicose veins of lower extremity were enrolled to accept surgical management of vein systems in our department from March 2006 to October 2006. All patients were respectively followed up after 6 months and 4 years about the changes of deep venous valve function with color Doppler ultrasonography. Results Thirty-nine patients’ deep venous valve function kept well up to now, and there was no significant difference between the two results. Four patients without proximal saphenous vein ligation recurred, and there was reflux in deep venous. Conclusion Endovenous laser treatment and ablation of varicose veins of lower extremity with deep venous insufficiency could improve deep venous valve function effectively. Proximal great saphenous vein ligation is important for successful operation.
Objective To explore the effect, operational essential, and clinical meaning of transilluminated powered phlebectomy for patients with varicose vein of the lower extremity. Methods In the study, 255 patients with 363 lower extremities of varicose vein in our hospital between May 2006 and November 2009 were treated by transilluminated powered phlebectomy. According to revised clinical etiology anatomic and pathophysiological classification system (CEAP), there were 104 limbs in C2, 53 limbs in C3, 155 limbs in C4, 34 limbs in C5, and 17 limbs in C6. The patients were followed up to observe postoperative complications. Results All varicose vein labeled before operation were resected. Surgical time was (100±20) min in unilateral lower extremity and (147±19) min in bilateral lower extremities. Total 221 patients (302 lower extremities) were followed up in 4 to 46 months, median follow up time was 24.5 months. Total 167 cases (247 lower extremities) had accepted the operation more than 1 year, 154 cases (229 lower extremities) in which were followed up. In the 229 lower extremities above, recurrences occurred in 11 extremities, small amounts of residual small varices were observed in 2 extremities, the recurrence rate was 5.68% （13/229）. Twenty-one limbs with ulcer were healing in 3 to 6 weeks after operation. Postoperative complications: there was paresthesias or pain of ankle area in 16 limbs, which was improved in 3 to 6 months after physical therapy; there was ecchymosis of skin of leg in 112 limbs, which disappeared in 3 to 5 weeks after operation; there was light edema in 37 limbs, which disappeared in 1 to 2 weeks after operation; there was local hematoma in 2 limbs, incision light infection in 5 limbs, skin and subcutaneous tissue necrosis above medial malleolus in one limb, and back of knee popliteal skin lesion in 2 limbs, which were all cured by the symptomatic treatment. Conclusions Surgical treatment of varicose veins is actually the combination of various surgical procedures. Varicose vein extraction using transilluminated powered phlebectomy is safe, efficacious, and cosmetically satisfactory.
ObjectiveThis study is designed to explore the indications, clinical pathway, and benefits of ultrasound-guided local anesthesia in radiofrequency endovenous obliteration (RFO) for great saphenous vein varices (GSV).MethodsA total of 350 patients diagnosed with GSV were divide into observation group (n=175) and control group (n=175). Patients in the observation group underwent local anesthesia RFO, and patients in the control group underwent intravertebral anesthesia. Comparion in the visual analogue scale pain scores (VAS) when anesthesia and after surgery, operative indexes, recovery time, satisfaction, and complications were performed.ResultsCompared with the control group, the VAS score with anesthesia time were lower (P<0.05), while in the surgery were higher (P<0.05), as well as the operative time, the first time for underground activity, normal activity time, incidences of complication of anesthesia and urinary were shorter (P<0.05), and the satisfaction rate was higher (P<0.05). There was no difference in the pain score of 12 h and 24 h after surgery, blood loss, volume of anesthetic swelling fluid, postoperative hospitalization, incidences of urinary tract infection, incisional infection, and deep vein thrombosis (P>0.05).ConclusionsThe RFO is feasible and safe after local anaesthesia. It can decrease the complication of anesthesia, that will promote the patient soon to be restored to health.
ObjectiveTo evaluate the changes of the flow parameters before and after the anastomotic port exploration and dredging during coronary artery bypass grafting by using the transit time flow measurement (TTFM).MethodsA total of 167 patients who underwent continuous coronary artery bypass grafting and anastomotic port exploration and dredging surgery in Beijing Anzhen Hospital from 2018 to 2019 were enrolled in this study. There were 136 male and 31 female patients aged 41-82 (58.35±17.26) years. If the probe entered and exited the anastomotic port smoothly, it was recorded as a non-resistance group; if the resistance existed but the probe could pass and exit, it was recorded as a resistance group; if the probe could not pass the anastomotic port for obvious resistance, it was recorded as the stenosis group. In the stenosis group, the grafts were re-anastomosed and the flow parameters were re-measured by TTFM.ResultsA total of 202 anastomotic ports were carried out by exploration and dredging. Among them, 87 anastomosis (43.1%) were in the non-resistance group, and there was no significant change in the blood flow volume (BFV) and pulsatility index (PI) before and after exploration and dredging (6.16±3.41 mL/min vs. 6.18±3.44 mL/min, P=0.90; 7.06±2.84 vs. 6.96±2.49, P=0.50). Sixty-four anastomosis (31.7%) were in the resistance group, the BFV was higher after exploration and dredging than that before exploration and dredging (17.11±7.52 mL/min vs. 4.96±3.32 mL/min, P<0.01), while the PI was significantly smaller (3.78±2.20 vs. 8.58±2.97, P<0.01). Fifty-one anastomosis (25.2%) were in the stenosis group, and there was no significant change in the BFV and PI before and after exploration and dredging (3.44±1.95 mL/min vs. 3.48±2.11 mL/min, P=0.84; 10.74±4.12 vs. 10.54±4.11, P=0.36). After re-anastomosis, the BFV was higher (16.48±7.67 mL/min, P<0.01) and the PI deceased (3.43±1.39, P<0.01) than that before exploration and dredging.ConclusionThe application of anastomotic exploration and dredging can reduce the occurrence of re-anastomosis, and promptly find and solve the stenosis of the distal coronary artery, improve the poor perfusion of distal coronary, and thus improves the prognosis of patients.