In vitro cytocompatibility of triclosan coated Polyglactin910 sutures.

Bioabsorbable sutures can improve the medical functions of existing non-absorbable sutures, and may produce new medical effects, and are expected to become a new generation of medical degradable materials. In this study, the cytocompatibility of triclosan coated polyglactin910 sutures (CTS-PLGA910) was analyzed and different concentrations of sutures were prepared. The effects of sutures on the cytotoxicity and cell proliferation of HUVEC were studied by CCK-8 assay. The hemolysis, total antioxidant capacity (T-AOC) activity and nitric oxide (NO) content were investigated to improve the blood compatibility of sutures. The results showed that the hemolysis rate of CTS-PLGA910 was less than 5%. After treatment on HUVEC cells for 48 and 72 h, there was no significant change in NO content in CTS-PLGA910 groups compared with the control group, while T-AOC activity and antioxidant capacity were significantly increased in medium and high dose groups. In summary, the blood compatibility and cell compatibility were significantly improved, which provided a basis for the clinical application of sutures in the future.

The effect of Xylocaine spray on suture material degradation.

OBJECTIVES: To compare the tensile strength of fast absorbable Polyglactin 910 suture material when impregnated with various agents for local anesthesia and to investigate whether the presence of ethanol in Xylocaine spray could explain a potential reduction in tensile strength after use of Xylocaine spray. METHODS: In all, 120 suture samples of Polyglactin 910 were divided into four groups of 30. These four groups were randomly impregnated with isotonic sodium chloride, isotonic sodium chloride plus Xylocaine spray, isotonic sodium chloride plus Xylocaine gel, or isotonic sodium chloride plus ethanol. After impregnation, the sutures were stored in sealed glass tubes in a heating cabinet at 37°C for 72 h. Thereafter, the tensile strength of these 120 samples was assessed by a universal tensile testing machine. The maximal force needed to break the suture material was recorded in newtons (N). RESULTS: Fast absorbable Polyglactin 910 suture material impregnated with Xylocaine spray or ethanol showed weakened tensile strength (mean values 11.40 and 11.86 N, respectively), whereas the specimens impregnated with Xylocaine gel or sodium chloride retained their tensile strength better (mean values 13.81 and 13.28 N, respectively; mean difference between Xylocaine gel and Xylocaine spray -2.41 N, P < 0.001). CONCLUSION: In this in vitro experiment, ethanol and Xylocaine spray weakened the tensile strength of fast absorbable Polyglactin 910 sutures. Use of Xylocaine spray, which contains ethanol, for local anesthesia might lead to early breakdown of the suture material and wound rupture. The authors suggest caution when using Xylocaine spray in combination with fast absorbable Polyglactin 910 suture.

Subcuticular skin closure at cesarean delivery with poliglecaprone-25 vs polyglactin-910: a randomized controlled trial.

BACKGROUND: Cesarean delivery is a commonly performed surgical procedure worldwide. There is limited good-quality evidence regarding subcuticular skin closure with absorbable sutures in transverse incisions after cesarean delivery. OBJECTIVE: This study aimed to compare poliglecaprone-25 (3-0) and polyglactin-910 (4-0) sutures for subcuticular skin closure in Pfannenstiel incisions among women undergoing cesarean delivery. STUDY DESIGN: In this double-blind, single-center, randomized controlled trial among women undergoing cesarean delivery (elective and emergency), 200 women were randomized (Group 1-subcuticular skin closure with poliglecaprone-25 [3-0] vs Group 2-subcuticular skin closure with polyglactin-910 [4-0]). All women received similar preoperative and postoperative care. A sample size of 200 women was selected with the aim of reducing the composite wound complication rate from 15.8% to 3.6% with a power of 0.80 and a 2-tailed α of 0.05. Thus, 90 women were required in each group, but 100 were selected to account for attrition. RESULTS: Composite wound complications (including surgical site infection, hematoma, seroma, need for resuturing or readmission for wound complications) were similar in the 2 groups (Group 1 vs 2: 16 vs 10; P=.293; relative risk, 1.28; 95% confidence interval, 0.91-1.79). Surgical site infection (8 vs 7; P=1.000; relative risk, 1.08; 95% confidence interval, 0.64-1.83), hematoma (1 vs 2; P=.561; relative risk, 0.66; 95% confidence interval, 0.13-3.31), seroma (8 vs 2; P=.052; relative risk, 1.65; 95% confidence interval, 1.17-2.33), need for resuturing (4 vs 3; P=.700; relative risk, 1.15; 95% confidence interval, 0.60-2.22), and need for readmission (4 vs 4; P=1.000) were similar in the 2 groups. Pain score on the visual analog scale at 3 days (3.2±1.0 vs 3.6±1.2) and 6 weeks after operation (1.6±0.8 vs 1.7±0.9;) was significantly lower in Group 1 (P=.023 and P=.033, respectively). There was no difference between observer and patient scar assessment scores measured at 6 weeks after operation (P=.069 and P=.431, respectively). CONCLUSION: Poliglecaprone-25 (3-0) and polyglactin-910 (4-0) subcuticular sutures were comparable regarding composite wound complications (surgical site infection, hematoma, seroma, wound separation or re-suturing, need for readmission) and cosmetic appearance (patient scar assessment score & observer scar assessment score) related to skin closure among women undergoing cesarean delivery through a Pfannenstiel incision in nonobese women (average body mass index, 25).

An Evaluation of the Tensile Strength of Polyglactin Sutures After Immersion in Different Herbal Mouthwashes: An In Vitro Study.

Background The process of suturing is essential to the healing of surgical wounds. Sutures on surgical wounds from fabric approximate ligament tissues, control haemorrhage, and assist the primary healing process in oral surgical procedures. The oral environment may cause the suture to lose its tensile strength, which causes tissue to open and spread infection. Different mouthwashes are recommended for effective oral hygiene maintenance postoperatively. Ideally, the use of mouthwashes should not alter the mechanical properties of suture materials. A suture material's tensile strength or ability to endure tension during knotting and long-term wound protection is measured. Aim The aim of the current study is to assess the tensile strength of polyglactin sutures following immersion in herbal mouthwashes. Methods Two commercially available synthetic braided polyglactin 910 absorbable sutures (Vicryl and Seamcryl) were chosen to assess their tensile strength following immersion in two kinds of herbal mouthwashes: nilavembu (Andrographis paniculata) silver nanoparticle mouthwash and clove-uni stevia mouthwash. The tensile strength of the sutures was evaluated using an ElectroPuls® E3000 (Instron, Norwood, MA, USA) universal testing machine. The data were transferred to IBM Statistical Package for Social Sciences (SPSS) software version 23.0 (IBM Corp., Armonk, NY, USA), wherein the tensile strength values of Vicryl and Seamcryl after immersion in two different mouthwashes compared with control were statistically analysed using a one-way analysis of variance (ANOVA) test. Results The tensile strength of Vicryl suture material was found to be higher in the clove-uni stevia mouthwash group than in the nilavembu silver nanoparticle mouthwash and control (p-value=0.000, which is statistically significant). The tensile strength of Seamcryl suture material was found to be higher in the clove-uni stevia mouthwash group than in the nilavembu silver nanoparticles mouthwash and control (p-value=0.001, which is statistically significant). Conclusion Nilavembu silver nanoparticle mouthwashes analysed in the present study decreased the tensile strength property of Vicryl suture material after immersion for 24 hours, whereas clove-uni stevia mouthwash was shown to increase the tensile strength of both Vicryl and Seamcryl suture materials. Therefore, the selection of suture material and the postoperative prescription of mouthwash should be considered for a better clinical outcome.

Clinical Equivalence of Trusynth® and Vicryl® Polyglactin 910 Sutures for Subcutaneous Tissue Closure During Cesarean Delivery: A Single-Blind Randomized Controlled Trial.

Background Post-cesarean complications such as surgical site infection (SSI), bleeding, and dehiscence may occur after cesarean delivery. Subcutaneous tissue closure will reduce these complications. With this background, this study assessed the clinical equivalence of Trusynth® and Vicryl® polyglactin 910 sutures for subcutaneous tissue closure. Methods In this randomized, single-blind study (from January 5, 2021 to December 24, 2021), a total of 113 women with a singleton pregnancy scheduled for cesarean section were included in the study and randomized to Trusynth® (n=57) and Vicryl® (n=56) group. The primary endpoint was the incidence of subcutaneous abdominal wound disruption within six weeks of cesarean delivery. The secondary endpoints included postoperative complications (SSI, hematoma, seroma, and skin disruptions), operative time, intraoperative handling characteristics, postoperative pain, hospital stay, time taken to return to normal activities, suture removal, microbial deposits on sutures, and adverse events. Results No incidence of subcutaneous abdominal wound disruption was recorded. Non-significant differences in intraoperative handling parameters (except memory, p=0.007), postoperative pain, skin disruption, SSI, hematoma, seroma, hospital stay, and time to return to normal activities were observed between Trusynth® and Vicryl® groups. Conclusion Both Trusynth® and Vicryl® polyglactin 910 sutures can be regarded as clinically equivalent. These are safe and effective for subcutaneous tissue closure during cesarean section with minimal risk of subcutaneous abdominal wound disruptions.

Clinical Equivalence of Polyglycolic Acid Suture and Polyglactin 910 Suture for Subcutaneous Tissue Closure After Cesarean Delivery: A Single-Blind Randomized Study.

Purpose: The global rise in frequency of cesarean delivery raises the concern to minimize the post-operative complications, in order to improve the maternal and neonatal health. Closure of subcutaneous tissue following cesarean section closes dead space, hence reduces the wound complications. No previous study has compared the clinical equivalence of polyglycolic acid suture with polyglactin 910 suture for subcutaneous tissue closure following cesarean section. Therefore, this study compared the incidence of subcutaneous abdominal wound disruptions within the first 6 weeks of subcutaneous tissue closure with either of the sutures. Patients and Methods: A single-blind, prospective, randomized study was conducted in two centres between February and November, 2021. Primiparous or multiparous women (18-40 years) with a singleton pregnancy requiring cesarean section were randomized to polyglycolic acid suture (Truglyde®) (n=54) and polyglactin 910 suture (Vicryl®) (n=54) group. The primary endpoint, incidence of subcutaneous abdominal wound disruptions within 6 weeks of cesarean delivery was evaluated. In addition, the secondary endpoints, incidence of post-operative subcutaneous abdominal wound disruptions for the study period, skin disruption, surgical site infection (SSI), seroma, hematoma, intraoperative handling, operative time, hospital stay, suture removal, microbial deposits on sutures, pain, time taken to resume normal activities, and adverse events were recorded. Results: Non-significant difference in the incidence of subcutaneous abdominal wound disruptions, skin disruption, SSI, seroma, hematoma, intraoperative handling characteristics, operative time, pain, duration of hospital stay, suture removal, microbial deposits, time taken to return to day-to-day activities, and adverse events were observed between the two treatment groups. Conclusion: Following cesarean section, subcutaneous tissue closure using polyglycolic acid suture or polyglactin 910 suture was not associated with incidence of subcutaneous abdominal wound disruptions. Additionally, non-significant differences regarding secondary endpoints between the groups suggested the clinical equivalence of the sutures. CTRI Registration Number: CTRI/2020/12/029737; Registration date: 11/12/2020.

Comparison of scar outcomes of alar flare region using absorbable and non-absorbable sutures: a single-blind study

Abstract Objective: Formation of scar on the face after septorhinoplasty may disturb the patient due to cosmetic concerns. One of the main factors affecting scar outcomes is probably the suture material used. The aim of this study was to examine the effect of different suture materials on scar outcomes of alar base in patients undergoing septorhinoplasty. Methods: Thirty-one patients who underwent alar base intervention during primary septorhinoplasty were divided into two groups according to the suture material used as the Polypropylene group (n = 16), (Polypropylene, Prolene 6/0; Ethicon Inc., Somerville, NJ, USA) and the Polyglactin group (n = 15), (Irradiated polyglactin 911, Vicryl RapidTM 6/0; Ethicon Inc., Somerville, NJ, USA). The scar outcomes of alar base were compared between the Polypropylene and Polyglactin groups. The modified Stony Brook Scar Evaluation Scale was used to measure wound healing results at one and 12-months postoperatively for objective evaluation. Patient satisfaction questionnaire was used for subjective evaluation. Results: There were no statistically significant differences in the Stony Brook Scar Evaluation Scale and patient questionnaire scores between Polypropylene and Polyglactin groups. Irradiated Vicryl Rapid had poor cosmetic outcomes in the alar base when compared to polypropylene, indicating no statistically significant difference. Conclusion: Both sutures can be used for closure of alar base considering their advantages and disadvantages, in patients undergoing septorhinoplasty. Level of evidence: Treatment Benefits; Level 2 (Randomized Trial).

Treatment of Mechanical Corneal Wounds Emergencies during the COVID-19 Pandemic: Absorbable 10-0 Vicryl (Polyglactin 910) Sutures as a Suitable Strategy.

Background­The COVID-19 pandemic has changed our standard practices: operating rooms were only available for functional emergencies and outpatient visits were drastically reduced in favor of telemedicine. Aim: To report the personalized "one-shot" surgery using absorbable 10-0 Vicryl (V10-0) or polyglactin 910 monofilament in mechanical corneal injuries from February 2020 to December 2021. Methods­Prospective case series with at least 12-months' follow-up, in a French university hospital. Among the overall population of open or closed-globe emergencies (n = 40), non-penetrating corneal lamellar lacerations (long axis > 2 mm) in zone 1 (OTC group) were treated with V10-0 suture(s) (n = 10), replacing traditional non-absorbable 10-0 nylon suture(s) or medical options in first line. The outpatient visits were performed on day (D)10, month (M)2, M6 then every six months. One interim visit by phone teleconsultation was scheduled between D10 and M2, and other(s) as needed. The main outcome was best-corrected visual acuity (BCVA) at M6. Secondary outcomes included mainly corneal astigmatism (CA) at M6 complications. Results­Among the ten corneal wounds, there were three children (30%), eight domestic accidents (80%), three eyes with metallic foreign bodies (30%), four open-globe injuries (40%), and nine eyes that received high-speed projectiles or sharp objects (90%). The complete V10-0 suture(s) absorption occurred in all eyes between D10 and M2. At M6, mean far and near BCVA decreased from 0.680 ± 0.753 and 0.490 ± 0.338 preoperatively to 0.050 ± 0.071 and 0.220 ± 0.063 logMAR (p = 0.019 and p = 0.025 respectively), mean CA decreased from 4.82 ± 3.86 preoperatively to 1.15 ± 0.66 diopters (p = 0.008). BCVA and CA were unchanged thereafter. No serious adverse event nor repeated surgery occurred. The mean number of teleconsultations was 1.20 ± 0.63 without an additional nonscheduled outpatient visit. Conclusions­The absorbable V10-0 sutures might be a safe and effective alternative for eligible corneal wounds, while reducing the number of outpatient visits, especially for children (no suture removal). The COVID-19 pandemic highlighted that they are ideally suited to logistical challenges.

Comparison of scar outcomes of alar flare region using absorbable and non-absorbable sutures: a single-blind study.

OBJECTIVE: Formation of scar on the face after septorhinoplasty may disturb the patient due to cosmetic concerns. One of the main factors affecting scar outcomes is probably the suture material used. The aim of this study was to examine the effect of different suture materials on scar outcomes of alar base in patients undergoing septorhinoplasty. METHODS: Thirty-one patients who underwent alar base intervention during primary septorhinoplasty were divided into two groups according to the suture material used as the Polypropylene group (n = 16), (Polypropylene, Prolene 6/0; Ethicon Inc., Somerville, NJ, USA) and the Polyglactin group (n = 15), (Irradiated polyglactin 911, Vicryl Rapid™ 6/0; Ethicon Inc., Somerville, NJ, USA). The scar outcomes of alar base were compared between the Polypropylene and Polyglactin groups. The modified Stony Brook Scar Evaluation Scale was used to measure wound healing results at one and 12-months postoperatively for objective evaluation. Patient satisfaction questionnaire was used for subjective evaluation. RESULTS: There were no statistically significant differences in the Stony Brook Scar Evaluation Scale and patient questionnaire scores between Polypropylene and Polyglactin groups. Irradiated Vicryl Rapid had poor cosmetic outcomes in the alar base when compared to polypropylene, indicating no statistically significant difference. CONCLUSION: Both sutures can be used for closure of alar base considering their advantages and disadvantages, in patients undergoing septorhinoplasty. LEVEL OF EVIDENCE: Treatment Benefits; Level 2 (Randomized Trial).

Skin closure at cesarean section, polypropylene versus polyglactin 910: a randomized controlled study.

AIM: To compare the rates of surgical wound infection in women who have undergone cesarean delivery with subcuticular skin closure with polyglactin 910 or polypropylene. METHODS: Between April 2018 and October 2018, patients who had undergone a cesarean delivery for any reason were randomized with polyglactin 910 or polypropylene for subcuticular skin closure. Participants were evaluated for wound complications on day 7 and 30 postoperatively. The primary outcome was surgical site infection within the first 30 days following delivery. In addition, factors affecting surgical site infections were analyzed by binary regression. RESULTS: A total of 220 women who had undergone cesarean delivery were randomized and 213 were included in the final analysis. The groups were similar in terms of demographic characteristics and perioperative features. No statistically significant difference was observed between the groups in terms of wound complications or superficial site infections (8.3% in the polypropylene group versus 10.6% in the polyglactin 910 group, p = .642). Similarly, no difference was observed between the groups in terms of other wound complications. A binary logistic regression analysis indicated that superficial wound site infection was not affected by gravidity, BMI, duration of operation, repeated or unplanned cesarean delivery. CONCLUSION: It was observed that surgical site infections and other wound complications in skin closures with polyglactin 910 were similar to those with polypropylene.

Clinical equivalence of Trusynth fast ® and Vicryl rapide ® polyglactin 910 fast absorbing sutures on maternal morbidity experienced by women following episiotomy repair: a single-blind, randomized study.

Background: Episiotomy procedure enlarges the vaginal outlet to facilitate childbirth. Polyglactin 910 fast-absorbing sutures are widely used for the repair of episiotomy because of their rapid absorption and less inflammatory response. This study was designed for subjective assessment of perineal pain post-episiotomy repair, with Trusynth Fast ® and Vicryl Rapide ® polyglactin 910 fast-absorbing sutures. Method: This was a single-blind, randomized, prospective study conducted between January 7, 2021 and July 14, 2021 across two centers in India. Primiparous or multiparous women (18-40 years), who required episiotomy during vaginal delivery were included, and either Trusynth Fast ® (n=47) or Vicryl Rapide ® (n=49) suture was used for their episiotomy repair. The primary endpoint, perineal pain was assessed with visual analogue scale at all follow-up visits. The secondary endpoints, quantity of local anesthesia, number of sutures used, time to repair episiotomy, intraoperative suture handling, analgesics used, early and late wound complications, wound re-suturing, time to complete healing, presence of residual sutures, return to sexual activity, dyspareunia, and adverse events were also recorded. Results: The study showed no significant difference in perineal pain between the two groups at any visit. A statistically significant difference (p<0.05) in total score of episiotomy healing scale on day 2 (0.13±0.34 versus 0.35±0.56) and swelling on day 2 (8.51 versusversus 28.57%) was noted between Trusynth Fast ® and Vicryl Rapide ® group. Non-significant difference was observed between the groups regarding anesthesia, number of sutures, time to repair episiotomy, intraoperative suture handling, analgesics, puerperal fever, wound infection, dehiscence, hematoma, urinary incontinence, re-suturing, time to complete healing, return to sexual activity and dyspareunia. Conclusion: Trusynth Fast ® suture is clinically equivalent to Vicryl Rapide ® suture and can be used for episiotomy repair with minimal risk of perineal pain and wound complications. Clinical Trials Registry of India Registration: CTRI/2020/12/029925; Registered on December 18, 2020.

Effects of 5-fluorouracil released from different prosthetic meshes on post-operative adhesion formation in rats.

OBJECTIVE: Post-operative adhesion is a common problem in abdominal surgery. Especially, foreign materials are strong stimulus for the development of adhesions. The aim of this study was to investigate whether drug release material coated prosthetic mesh decreases intra-abdominal adhesion formation or not. METHODS: 5-Fluorouracil (5-FU) releasing "chitosan gels" were loaded to polypropylene and polyglactin-910 grafts. Polypropylene, polyglactin-910 grafts, chitosan gel, and 5-FU-loaded polyglactin 910, polypropylene grafts were used to cover abdominal defects of rats which were created under sterile conditions (n=84). Each group was divided into two subgroups (n=6). Subgroups were sacrificed on the 7th and 30th days. RESULTS: The 7th day macroscopic examinations were similar. Polypropylene group was most adhesive group on the 30th day. There were less adhesions in chitosan gel and 5-FU-loaded groups. Capsule and capsule margins showed no difference on both the 7th and 30th days. Polypropylene-5-FU group and polypropylene-chitosan gel group showed significantly less macroscopic adhesions than polypropylene control group. Furthermore, polyglactin-910-chitosan gel group was less adhesive than polypropylene control group. CONCLUSION: This study showed that 5-FU decreases the adhesions but the dosage and release kinetics need further investigations.

Barbed Suture in Total Laparoscopic Hysterectomy: A Comparative Study of the Safety in Vaginal Cuff Closure with that of Polyglactin 910 Suture.

OBJECTIVES: To evaluate whether the use of barbed sutures during laparoscopic hysterectomy for vaginal cuff closure has reduced the surgical difficulty and incidence of post-operative complications as compared to polyglactin 910 suture. MATERIALS AND METHODS: This is a randomized comparative study conducted at a tertiary care hospital and research institute where 100 patients were divided into two groups (50 each) and underwent vault closure using barbed suture/Polyglactin 910. Data collected include demographic details, indication for surgery, mean suturing time, degree of surgeon difficulty, and the incidence of postoperative complications when followed up to 12 weeks and were compared statistically using Chi square test and Independent-t test. RESULTS: The use of barbed suture has significantly reduced the suturing time (5.39 min vs. 6.9 min, P < 0.0001) and surgical difficulty. The incidence of minor complications is similar to that of polyglactin 910. There were no cases of vaginal cuff dehiscence or bowel obstruction reported in our study. CONCLUSION: With the advantages of reduced suturing time and technical difficulty, and incidence of complications similar to conventional suture material, barbed sutures are to be considered as an excellent alternative to conventional suture materials.

Bacterial Colonization on Different Suture Materials Used in Oral Implantology: A Randomized Clinical Trial.

Objectives: This study aimed to compare the colonization of Enterococcus faecalis (E. faecalis), Escherichia coli (E. coli), Streptococcus mutans (S. mutans) and Staphylococcus aureus (S. aureus) isolated from the oral cavity on different suture materials used in oral implantology. Materials and Methods: Patients scheduled for implant surgery were included in this study. After flap approximation, the surgical site was sutured using silk, nylon, polyglactin 910 (Vicryl®) and triclosan-coated polyglactin 910 (Vicryl® Plus) sutures in a randomized order. Seven days after surgery, the sutures were removed and incubated in bile esculin agar (for E. faecalis), MacConkey agar (for E. coli), mitis salivarius agar (for S. mutans), and mannitol salt agar (for S. aureus) at 37°C for 24 h. The colonies were then counted. Data were analyzed using the Kruskal-Wallis and Mann-Whitney U tests. Results: Vicryl® sutures showed the highest accumulation of E. faecalis, followed by Vicryl® Plus, nylon, and silk. There was no significant difference between nylon and silk (P=0.5) or between Vicryl® and Vicryl® Plus (P=0.4). Vicryl® Plus sutures showed the highest accumulation of E. coli followed by Vicryl®, silk and nylon (P<0.01). Vicryl® sutures showed the highest accumulation of S. mutans, followed by Vicryl® Plus, silk, and nylon. Vicryl® Plus sutures showed the highest accumulation of S. aureus, followed by Vicryl®, nylon, and silk. Conclusion: Nylon sutures showed the least microbial accumulation. Vicryl® and triclosan-coated Vicryl® Plus sutures had no advantage over the commonly used silk sutures in decreasing the number of bacteria.

Technique proposition and material comparison for surgery rope making / Proposição de técnica e comparação de materiais para confecção de corda cirúrgica

ABSTRACT: The most tension resistant, nonmetallic, surgical suture is 5 polyester. Comparing it's resistance to those of the dogs' cranial cruciate ligament and the canine gastrocnemius tendon's up until they rupture, it's possible to detect a considerably inferior resistance on the implant's part. With the goal of achieving high mechanical resistances from sutures, these were grouped and twisted, resulting in a surgical rope that is adjustable to the patients needs. We analyzed manufacturing methodology, final conformation and tension resistance, based on three sutures models: "A" (1 polyglactin 910), "B" (1 polyester) and "C" (5 polyester). Considering averages of thickness and final load, the "B" implants obtained lower values than "A", indicating that polyglactin 910 ropes are more resistant than those of polyester. Moreover, the "C" implants resulted in the highest values of load and thickness, indicating that final thickness is predictive towards tension resistance. Size 1 Polyester was the only one to generate linear regression for supported load, ensuring the 25,34 Newtons (N) increment to every suture added to the implant, which suggests its use for the creation of non absorbable ropes. The use of 1 polyglatctin 910 promotes load averages superior to 1 polyester;therefore, it is indicated for making absorbable surgical ropes.

RESUMO: O fio cirúrgico não metálico com maior resistência à tração é o poliéster nº 5. Comparando a sua resistência com a do ligamento cruzado cranial de cães e do tendão gastrocnêmico canino até suas rupturas, é possível perceber uma resistência consideravelmente inferior da parte do implante. Com objetivo de alcançar grandes resistências mecânicas a partir de fios de sutura, estes foram agrupados e torcidos, resultando em uma corda cirúrgica ajustável de acordo com a necessidade do paciente. Foram analisadas a metodologia de confecção, a conformação final e a resistência à tração, baseados em três modelos de fios: "A" (poliglactina 910 nº 1), "B" (poliéster nº 1) e "C" (poliéster nº 5). Considerando as médias de espessura e carga final, os implantes "B" obtiveram menores valores do que "A", indicando que cordas de poliglactina 910 são mais resistentes que as de poliéster. Ademais, os implantes "C" resultaram nos maiores valores de carga e espessura, indicando que a espessura final é preditiva para resistência à tração. O poliéster nº 1 foi o único a gerar regressão linear para carga suportada, garantindo o incremento de 25,34 Newtons (N) a cada fio acrescido ao implante, o que sugere seu uso para criação de cordas não absorvíveis. A utilização da poliglactina 910 nº 1 promove médias de carga superiores ao poliéster nº 1, portanto, é indicada para confecção de cordas cirúrgicas absorvíveis.

Chronic neck sinus secondary to retained polyglactin 910 suture following sub-total thyroidectomy: a case study.

OBJECTIVE: Reaction to sutures is a rare cause of non-healing in clean wounds. Cases of severe reaction to silk sutures have been reported, causing chronic infection and failure of thyroidectomy wound healing. We report a case of retained polyglactin 910 suture presenting with a chronically discharging sinus of the neck after sub-total thyroidectomy. CASE: The patient, a 37-year old female, presented with a simple benign multinodular goitre. She had subtotal thyroidectomy and was discharged on day six postoperatively, after satisfactory primary wound healing. The patient observed swelling, pus/discharge and extrusion of the suture in the neck three weeks after surgery. Discharge did not stop after initial wound debridement under local anaesthesia. Computed tomography (CT) scan showed a small area of ring-enhancement soft tissue density, anterior to the right thyroid remnant. Subsequent wound exploration under general anaesthesia revealed a sinus tract extending to the thyroid bed with undegraded strands of thickened polyglactin 910 suture. Suture remnants were removed and the wound healed satisfactorily a week later. CONCLUSION: Non-healing post thyroidectomy wounds should raise suspicion of a retained suture. Early recognition and surgical intervention will shorten the period of morbidity.

Clinical Outcome Following Surgical Repair of Small Versus Large Orbital Floor Fractures Using Polyglactin 910/Polydioxanone (Ethisorb®).

The aim of this retrospective study was to evaluate the clinical outcome of surgical management of small versus large, isolated orbital floor fractures (OFFs) using polyglactin 910/polydioxanone (Ethisorb®). Covering a four-year period (2010-2013), all records concerning midfacial fractures with involvement of the orbit were screened. Isolated fractures of the orbital floor as well as combined injuries of the orbital floor and medial wall that had been treated surgically using polyglactin 910/polydioxanone (Ethisorb®) were included. Patients underwent a preoperative, a postoperative, and a late ophthalmologic assessment. The clinical outcomes of surgically managed small OFFs up to 2 cm2 were statistically analyzed and compared to clinical results in larger defects. The final sample included 61 patients (25 women, 36 men). Fractures up to 2 cm2 were found in 33 patients (54.1%), whereas 28 patients (45.9%) suffered from OFFs larger than 2 cm2. The clinical outcomes did not significantly differ between both sample categories, and statistical analysis showed a power of 0.91 to detect a potentially existing difference. On final examination, 52 patients were free of any clinical symptoms, whereas minor issues were found in seven subjects, and two patients suffered from severe impairment. In conclusion, polyglactin 910/polydioxanone (Ethisorb®) seems to be a suitable material for surgical repair of both small and large OFFs.

A Retrospective Review of Vaginal Cuff Dehiscence: Comparing Absorbable and Nonabsorbable Sutures.

STUDY OBJECTIVE: To compare the rate of spontaneous and complete vaginal cuff dehiscence (VCD) using absorbable versus nonabsorbable sutures for vaginal cuff closure. DESIGN: Retrospective comparative cohort design. SETTING: Freestanding ambulatory surgery center in suburban Maryland. PATIENTS: Women age >18 years old who underwent hysterectomy for benign conditions between October 2013 and April 2018. INTERVENTION: Laparoscopic retroperitoneal hysterectomy was performed by 2 gynecologic surgical specialists. Transvaginal cuff closure was performed using either absorbable Vicryl (polyglactin 910) sutures (n = 881) or nonabsorbable Ethibond (polyester) sutures (n = 574). The nonabsorbable sutures were surgically removed after 90 days. MEASUREMENTS AND MAIN RESULTS: No statistically significant differences in age, race, weight, body mass index, parity, uterine weight, or number of comorbidities were noted between the nonabsorbable and absorbable suture groups. Spontaneous vaginal cuff dehiscence (VCD) occurred in 3 patients (0.52%) in the nonabsorbable group and in 12 patients (1.4%) in the absorbable group (p = .183). Eleven of the 12 cases of VCD in the absorbable group were precipitated by intercourse and occurred within 90 days of surgery. CONCLUSION: Our data suggest that use of a nonabsorbable suture may be an effective approach to prevent spontaneous VCD, but the benefits should be weighed against the inherent risk associated with a second procedure to remove sutures.

Evaluation of polypropylene and polyglactin sutures in primary sphincteroplasty for the treatment of anal fistula in rats / Avaliação dos fios de polipropileno e poliglactina na esfincteroplastia primária no tratamento da fístula anal em ratos

ABSTRACT Rationale: Fistulotomy followed by primary sphincteroplasty is one of the therapeutic options in transsphincteric fistulae; however, it was not known which suture would present a better result. Objective: To compare polypropylene and polyglactin sutures in primary sphincteroplasty in rats subjected to fistulotomy. Method: Thirty Wistar rats were subjected to peritoneal anesthesia with ketamine and xylazine, followed by transfixation of the anal sphincter with steel thread, which remained for 30 days to develop the anal fistula. After this period, the steel thread was removed and four groups were formed: A - Control (n = 5), without treatment; B - Fistulotomy (n = 5), performed fistulotomy only; C - Polypropylene (n = 10), in which fistulotomy was performed followed by primary sphincteroplasty with polypropylene suture; D - Polyglactin (n = 10), in which fistulotomy was performed followed by primary sphincteroplasty with polyglactin suture; after 30 days the animals were anesthetized again and submitted to euthanasia by deepening the anesthetic plane to remove the specimens, analyzing fistula closure, muscle fiber distance, and inflammatory process. Results: The fistula persisted in all animals of the control group and in none of the other groups; the distances between the muscle fibers were 1620 µm, 4665 µm, and 2520 µm, respectively in Groups B, C, and D (p = 0.067); in relation to fibrosis, the means were 2.4, 2.8, and 3.6, respectively in Groups B, C, and D, showing greater fibrosis in the latter group (p = 0.041). Conclusion: There was no persistence of the fistula in any of the treated animals; there was no difference in the distance between the muscle fibers between the groups subjected to primary sphincteroplasty with polypropylene or polyglactin, or between these groups and the one treated only by fistulotomy. There was greater fibrosis in animals treated with primary sphincteroplasty with polyglactin.

RESUMO Racional: A fistulotomia seguida de esfincteroplastia primária é uma das opções terapêuticas nas fístulas transesfincterianas, porém, não se sabe ao certo qual fio poderia apresentar melhor resultado. Objetivo: Comparar os fios de polipropileno e poliglactina na esfincteroplastia primária em ratos submetidos a fistulotomia. Método: Utilizou-se 30 ratos Wistar, confeccionada fístula por transfixação do esfíncter anal com fio de aço, que permaneceu por 30 dias. Após, o fio de aço foi removido e foram formados quatro grupos: A - Controle (n = 5), sem tratamento; B - Fistulotomia (n = 5), realizada fistulotomia apenas; C - Polipropileno (n = 10), em que foi realizada fistulotomia seguida por esfincteroplastia primário com fio de polipropileno; D - Poliglactina (n = 10), mesmo procedimento com fio de poliglactina; após 30 dias analisou-se o fechamento da fístula, afastamento dos cabos musculares e processo inflamatório. Resultados: A fístula persistiu em todos animais do grupo controle e em nenhum dos demais grupos; dos grupos tratados a área de afstamento dos cabos musculares foi 1620 µm, 4665 µm e 2520 µm, respectivamente nos Grupos B, C e D (p = 0,067); em relação à fibrose as médias foram 2,4; 2,8 e 3,6; respectivamente nos Grupos B, C e D, demonstrando maior fibrose neste último grupo (p = 0,041). Conclusão: Não houve persistência da fístula em nenhum dos animais tratados, não houve diferença no afastamento dos cabos musculares entre os grupos submetidos a esfincteroplastia primária com polipropileno ou poliglactina, e nem destes com o grupo tratado apenas por fistulotomia. Houve maior fibrose nos animais tratados por esfincteroplastia primária com poliglactina.

Polyglactin 910 suture compared with polyglactin 910 coated with triclosan in dental implant surgery: randomized clinical trial.

Antibacterial coating of surgical sutures is a suggested approach to prevent surgical site infections. The aim of this study was to compare the incidence of surgical site infection following the use of polyglactin 910 (Vicryl) and polyglactin 910 coated with triclosan (Vicryl Plus) sutures in dental implant surgery. This single-blind, randomized clinical trial evaluated patients who received three implants in the posterior mandible. Patients were randomly divided into two groups to receive either Vicryl Plus sutures (group 1) or Vicryl sutures (group 2). A total of 320 patients were included in the study (n=160 in each group). Twelve patients (7.5%) in group 1 and 11 patients (6.9%) in group 2 had a surgical site infection. Analysis of the data did not demonstrate any significant difference in the incidence of surgical site infection between the two groups (P=0.5). The incidence of surgical site infection in fresh socket implant placement was higher than that in delayed implant placement, irrespective of the type of suture used (P=0.001). Triclosan-coated Vicryl sutures did not decrease the incidence of surgical site infection in dental implant surgery.