The comparative study of local application of magnetic piece dressings of different intensities (Gs) on the effect of survival of 48 skin flaps (2×5cm in size) and the healing of the incisional wornds was reported. Twelve Japanese long ear white rabbits were used for this study. It was noted that the magnetic field intensity of 200or 400 Gs showed remarkable increase of the area of survival of the skin flaps and enhancement of the healing of the incisional wounds.
ObjectiveTo research the effect of different surgical sutures on abdominal surgical incision healing quality, and provide a novel theory basis for promoting the healing of incision of abdominal wall.
MethodsTotally 341 patients who underwent laparotomy were collected from general surgery of Affiliated Hospital of North Sichuan Medical College, and they were randomly divided into three groups: the including polydioxanoneⅡ(PDSⅡ) suture group, abdominal wall incision except the skin was successively sutured with PDSⅡsuture; the Vicryl group, abdominal wall incision except the skin was successively suture with antibacterial Vicryl; and the common silk thread group, abdominal wall incision was performed layering intermittent silk suture.
ResultsIn terms of suture time, the PDSⅡsuture group [(11.23±1.62) min〕was significantly lower than the Vicryl group [(14.04±1.20) min〕, P < 0.05, and also both were significantly lower than the ordinary silk thread group [(21.95±1.95) min〕, P < 0.05. In respect of rejection reaction, incision infection and incision split, the PDSⅡsuture group and the Vicryl group were significantly lower than the ordinary silk thread group (P < 0.05), but compared the PDSⅡsuture group with the Vicryl group, the differences were not statistically significant (P > 0.05). Regarding post operation hospitalization duration, fat liquefaction and effusion, compared the differences between the three groups were not statistically significant (P > 0.05).
ConclusionFull fascia is successively suture with PDSⅡsutures and antibacterial Vicryl suture that can significantly shorten the suture time, reduce the incidence of rejection incision, wound infection and wound dehiscence and promote the postoperative recovery of the patients.
Chronic wounds have a high incidence and a long course of disease, and will bring a heavy economic burden to patients, which is the difficulty of clinical treatment at present. Therefore, it is urgent to find an effective method to promote chronic wound healing. In recent years, the application of therapeutic ultrasound in chronic wound treatment has gradually gained attention, and has become a promising adjuvant therapy. This article reviews the process of wound healing, the mechanism of therapeutic ultrasound in promoting wound healing, the biological effects of therapeutic ultrasound in different stages of wound healing and its application in diabetic ulcer, venous ulcer of lower limbs and pressure ulcer, in order to provide new ideas and directions for the treatment of chronic wounds.
One of the most difficult problems on tendon surgery is adhesion formation during the process of tendon healing, which causes functional interference. This pathophysiologic pcocess is closely related to the ways of tendon nourishment and types of tendon healing. In order to understand whether the sutured tendon couldheal without blood circulation, the process and types of tendon healing in the synovial fluid were studied by in vivo culture modle. Flexor digitorum profundus (FDP) segments from the front paw of 50 New Zedland white rabbits were cut inthe middle and sutured with microsurgical technique, and then, preserved in thesynovial cavitied of both knees of the rabbits. After 1, 2, 4, 6 weeks, the specimens from the synovial cavities were studied by gross observation, light microscope, scanning and transmission electron microscope, and biochemical determination. The results showed that the tendon which was nourished by synovial fluid not only could survive, but also could heal. Healing of the tendon was completed by activation and proliferation of both peritendon cells and cells in the tendon.The healing could be devided into 3 periods: malnutrition period (less than 1 week), reparative period (2-4 week) and rebuilding period (more than 4 week).
ObjectiveTo analyze the clinical effect of vacuum-assisted closure in treating venous ulcer.
MethodsThirty seven patients including 21 males and 16 females with lower extremity venous ulcer treated in our hospital from January 2013 to January 2014 were included in our study. Based on random number table, the patients were divided into treatment group [n=19, (66.47±6.22) years old] and control group [n=18, (66.39±5.37) years old]. The treatment group received vacuum-assisted closure, while the control group underwent routine moist therapy. Wound healing and visual analogue pain scores were observed. Chi-square test and t-test were used for statistical analysis.
ResultsWound healing rate was 84.2% in the treatment group and 55.6% in the control group, and the difference between the two groups was statistically significant (χ2=26.66, P<0.05). Wound healing time was (13.84±3.13) days in the treatment group and (27.35±1.73) days in the control group, and the difference was statistically significant (t=-7.498, P<0.01). Visual analogue pain scores in the treatment group was 3.53±0.51, and in the control group, it was 4.41±0.51, and the difference was statistically significant (t=-5.197, P<0.01).
ConclusionVacuum-assisted closure can significantly improve wound healing and alleviate sufferings in the treatment of venous ulcer.
lfty white Leghorn hens were used,and 10 were randomly grouped as control,the other 40received the operation.A half of the profundus tendons of the second and third fore-toes of both sideswere cut.After the oporation,no Way immobiliZation was used.The oporated toes on one side wererandomly chosen as the treatment group,another side the oporated toes on the other side were served asthe control group. The toes having the injured tendons in the tratment group were irradiated for twentyminut...
ObjectiveTo investigate the effect of tension suture on healing quality of incision after abdominal surgery, and to provide a theoretical basis for reducing post-operative wound complications.
MethodLiteratures on the tension suture in the application of abdominal incision were searched from January 2005 to January 2015, and then a Meta-analysis was carried out based on the data obtained from CBM, CNKI, and WanFang database.
ResultsEight articles involving 2 001 patients with abdominal surgery, including 1 044 cases in tension suture group, and 957 cases in the conventional suture group, were incorporated. The Meta analysis results showed that, the technique of tension suture could reduce the incidence of post-operative wound infection (OR=0.40, 95% CI: 0.28-0.57, P<0.05), fat liquefaction (OR=0.51, 95% CI: 0.37-0.69, P<0.05), incisional hernia (OR=0.11, 95% CI: 0.04-0.34, P<0.05), wound dehiscence (OR=0.13, 95% CI: 0.07-0.25, P<0.05), and second stage surgery (OR=0.16, 95% CI: 0.09-0.30, P<0.05). But, it would also augment the risk of post-operative skin incision necrosis (OR=15.14, 95% CI: 2.79-82.08, P<0.05). On the other hand, the method of tension suture had no effect on the subcutaneous hemorrhage in the incision area (OR=0.58, 95% CI: 0.30-1.13, P>0.05).
ConclusionsCompared with conventional suture, tension suture can reduce the hazard of wound infection, fat liquefaction, incisional hernia, wound dehiscence, and reoperation after abdominal surgery. In contrast, it can also increase the risk of post-operative skin incision necrosis.
Objective To study the effect of Shengguzaizaosan on experimental fracture healing. Methods Thirty six-month-old Chinchilla rabbits were made the models with 3 mm bone defect in the middle of two-side radius and were divided randomly into 3 groups: Shengguzaizaosan group(group A, n=10), Xianlinggubao group(groupB, n=10) and control group(group C, n=10). Five rabbits were sacrificed 14 days and31 days after operation respectively. The double marks with tetracyslin hydrochloride were given on the 4th day and the 5th day for the first mark and on the 11th day and the 12th day for the second mark in the rabbits sacrificed 14 days later,and on the 20th day and the 21st day for the first mark and on the 28th day andthe 29th day for the second mark in the rabbits sacrificed 31 days later. The samples were taken to make the bone histomorphometry study. Results When compared group A with group C, there were significant differences(P＜0.01) in osteoid area density, osteoid mean width, active osteoblastic surface, mineralization surface and dynamic parameters after 14 days,and in mean width of mineralization callus, active osteoblastic surface and mean depth of lacunae after31 days. There was a approximate effect between group B and group C. when compared group B with group A, there were significant differences(P＜0.05) in osteoclastic index,mineralization surface,bone formation rate after 14 days, and in osteoid surface,mean depth of lacunae and bone formation rate after 31 days. Conclusion Shengguzaizaosan can increase osteoid,accelerate mineralization rate and bone formation rate, and reduce mineralization lag time at early period of fracture. It can increase mineralization calluswidth and resorption of osteoclast at later period of fracture. To some extent, shengguzaizaosan can accelerate the experimental fracture healing.
Objective To examine an effect of the locally-used platelet derived growth factor-BB (PDGF-BB) on the healing of the medial collateral ligament (MCL) in the knee joints of rats. Methods Forty-eight rats were equally randomly divided into 2 groups: the experimental group (group A) and the control group(group B). MCL of all the rats were ruptured to establish the wound models. In group A, 5 μg of PDGF-BB was locally injected in the wound of each rat and then the wound was sutured; but in group B, the wound was only sutured. After 2 weeks, histological evaluations were performed to determine whether PDGF-BB could promote the healing of MCL. Results There were significantly more fibroblasts formed during the ligament healing process in group A than in group B (213.44±15.32 vs. 180.42±12.78, Plt;0.01). The fibroblasts were more mature andmore regularlyarranged in group A than in group B. The type, content, and crosslink of the collagen were improved to a greater extent in group A than in group B (Plt;0.01). Conclusion PDGF can promote the healing of the injured ligament.
Objective To investigate the effects of carboxymethylchitosan- carboxymethylcellulose (CMCH-CMC) film on the adhesion and heal ing of colonic anastomosis. Methods Sixty-four healthy adult male SD rats was randomly divided into control group and experimental group (n=32). The model of colonic anastomosis was made according to Buckenmaier’ smethod in all rats. The experimental group was treated by wrapping anastomosis with CMCH-CMC film (3 cm × 2 cm) and the control group was not treated. At 7 days and 14 days after operation, the adhesion formation of colonic anastomosis was observed, the tensile strength of the anstomosis was assessed and compared with 6 normal rats, and the hydroxyprol ine (HP) content of the anastomotsis was detected. Results There were 3 deaths in the experimental group and 2 deaths in the control group. The adhesive scores of the experimental group on the 7th and 14th postoperative day [(0.50 ± 0.16) points and (0.45 ± 0.14) points, (Plt; 0.05)] were significantly lower than those of the control group [(1.67 ± 0.15) points and (2.29 ± 0.18) points, (P lt; 0.05)], (Plt; 0.01). Tensile strength were more marked on the 14th postoperative day than on the 7th postoperative day in the control group (Plt; 0.05), but there was no significant difference between the 7th day and the 14th day in the experimental group. The tensile strength of thecontrol group and the experimental group on the 14th postoperative day [(178.36 ± 20.10) and (172.74 ± 22.18) mmHg] were respectively higher than those on the 7th postoperative day [(138.67 ± 16.65) and (130.81 ± 18.38) mmHg] (Plt; 0.01). The tensile strength of the control group and the experimental group on the 7th postoperative day were respectively significantly lower than that of the normal rats (P lt; 0.01). The level of HP in the anastomosis was significantly higher on the 7th postoperative day in the experimental group [(84.47 ± 11.87) μg/mg dried weight] than that of the control group [(55.47 ± 12.89) μg/mg dried weight), (Plt; 0.05)], but there was no significant difference between the experimental group and the control group on the 14th postoperative day [(146.07 ± 14.81) μg/mg dried weight, (137.14 ± 16.81) μg/mg dried weight, (P gt; 0.05)]. Conclusion The CMCH-CMC film can decrease adhesion the formation of colonic anastomosis, but does not interfere with the heal ing of colonic anastomosis.
