A Machine Learning Approach to Predicting Donor Site Complications Following DIEP Flap Harvest.

BACKGROUND: The additional donor site incisions in autologous breast reconstruction can predispose to abdominal complications. The purpose of this study is to delineate predictors of donor site morbidity following deep inferior epigastric perforator (DIEP) flap harvest and use those predictors to develop a machine learning model that can identify high-risk patients. METHODS: This is a retrospective study of women who underwent DIEP flap reconstruction from 2011 to 2020. Donor site complications included abdominal wound dehiscence, necrosis, infection, seroma, hematoma, and hernia within 90 days postoperatively. Multivariate regression analysis was used to identify predictors for donor site complications. Variables found significant were used to construct machine learning models to predict donor site complications. RESULTS: Of 258 patients, 39 patients (15%) developed abdominal donor site complications, which included 19 cases of dehiscence, 12 cases of partial necrosis, 27 cases of infection, and 6 cases of seroma. On univariate regression analysis, age (p = 0.026), body mass index (p = 0.003), mean flap weight (p = 0.006), and surgery time (p = 0.035) were predictors of donor site complications. On multivariate regression analysis, age (p = 0.025), body mass index (p = 0.010), and surgery duration (p = 0.048) remained significant. Radiographic features of obesity, such as abdominal wall thickness and total fascial diastasis, were not significant predictors of complications (p > 0.05). In our machine learning algorithm, the logistic regression model was the most accurate at predicting donor site complications with the accuracy of 82%, specificity of 0.93, and negative predictive value of 0.87. CONCLUSION: This study demonstrates that body mass index is superior to radiographic features of obesity in predicting donor site complications following DIEP flap harvest. Other predictors include older age and longer surgery duration. Our logistic regression machine learning model has the potential to quantify the risk of donor site complications.

Prophylactic Negative Pressure Wound Therapy in Reducing Surgical Site Infections in Closed Abdominal Incision: A Randomized Controlled Trial.

Objective: This study aimed to evaluate the efficacy of prophylactic negative pressure wound therapy (PNPWT) in reducing the incidence of surgical site infection (SSI) and other wound complications in closed abdominal incisions. Approach: This was a prospective, single-center, open-label parallel arm superiority randomized controlled trial conducted over 2 years. Participants were randomly assigned to PNPWT and standard surgical dressing (SSD) group. The occurrence of postoperative SSI within 30 days, other wound-related complications, length of hospital (LOH) stay, and readmission within 1 month among both the study group were studied. Results: A total of 140 participants were included, with 70 each randomized to the PNPWT and SSD groups. In this study, 28.5% and 5.8% developed SSI in the SSD and PNPWT groups, respectively (relative risk = 0.26; 95% confidence interval = 0.08-0.80; p = 0.001). Similarly, the incidence of seroma (7.2% vs. 18.5%, p = 0.016), wound dehiscence (0% vs. 4.2%, p = 0.244), superficial and deep SSI (5.7% vs. 24.3%, p = 0.001) and (0% vs. 4.2%, p = 0.244), and LOH stay (days) (9 vs. 10.5, p = 0.07) were less in PNPWT compared to SSD group. Innovation: Despite the advances in surgical care, SSI rates continue to be high. The present findings might facilitate the use of PNPWT as a novel preventive strategy to reduce SSI in closed abdominal incision. Conclusion: The PNPWT in closed incisions following elective laparotomy can reduce the incidence of SSI when compared to SSD. The use of PNPWT was associated with a lower incidence of superficial SSI and seroma but without significant reduction in hospital stay. Clinical Trial Registry India: CTRI/2020/11/028795.

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).

[A multicenter study to test the reliability and validity of the frailty assessment scale for elderly patients with inguinal hernia and to evaluate the value of clinical application].

Objectives: To verify the reliability and validity of the frailty assessment scale for elderly patients with inguinal hernia and to evaluate the value of its clinical application. Methods: A convenience sampling method was used to collect 129 geriatric patients who underwent inguinal hernia surgery from January 2018 to January 2023 in nine hospitals in Liaoning Province. There were 120 males and 9 females, of whom 89 patients were 60 to <75 years old, 33 patients were 75 to <85 years old and 7 patients were ≥85 years old. The 129 patients included 11 elderly patients with inguinal hernia who had recovered from preoperative infection with COVID-19. Statistical methods such as Cronbach's coefficient, Kaiser-Meyer-Olkin test, Bartlett's test, Pearson's correlation analysis, etc. were calculated to verify the reliability indexes such as feasibility, content validity, structural validity, criterion-related validity, internal consistency reliability, and re-test reliability. Taking the 5-item modified frailty index (5-mFI) as the gold standard, the area under the curve was used to analyze the ability of the two scales to predict the occurrence of postoperative acute urinary retention, postoperative delirium, poor incision healing, operative hematoma seroma, and postoperative complications. Results: The frailty assessment scale for elderly patients with inguinal hernia showed good reliability and validity (valid completion rate of 99.2%; item content validity index of 1.000, and the scale content validity index of 1.000; exploratory factor analysis extracted a total of 1 principal component, and factor loadings of each item of 0.565 to 0.873; the AUC for frailty diagnosis using 5-mFI as the gold standard of 0.795 (P<0.01) Cronbach's coefficient of 0.916, retest reliability coefficient of 0.926), it could effectively predict postoperative acute urinary retention, delirium, hematoma seroma in the operative area and total complications (AUC of 0.746, 0.870, 0.806, and 0.738, respectively; all P<0.05), and prediction efficiency was higher than that of 5-mFI (AUC of 0.694, 0.838, 0.626 and 0.641, P<0.05 for delirium only), but both scales were inaccurate in predicting poor incision healing (AUC of 0.519, P=0.913 for the frailty assessment scale and 0.455, P=0.791 for the 5-mFI). Conclusions: The frailty assessment scale for elderly patients with inguinal hernia is reliable and significantly predicts the occurrence of postoperative adverse events in elderly inguinal hernia patients. The scale can also be used for preoperative frailty assessment in elderly patients with inguinal hernia after rehabilitation from COVID-19 infection.

Sexual dysfunction between laparoscopic and open inguinal hernia repair: a systematic review and meta-analysis.

PURPOSE: Sexual dysfunction after inguinal hernia complication is considered rare. However, its consequences impact on quality of life inevitably. Laparoscopic and open inguinal hernia repair may be comparable in terms of recurrent rate, overall complications, and chronic pain. Therefore, its complication is still questionable between these approaches. In this study, we compared sexual dysfunction and related complications between laparoscopic and open inguinal hernia repair. METHODS: Systematic review and meta-analysis of randomized controlled trials (RCTs) studies were performed to compare laparoscopic and open inguinal hernia repair. Risk ratio (RR) and 95% confidence intervals (95% CI) were used as pooled effect size measures. RESULT: Thirty RCTs (12,022 patients) were included. Overall, 6014 (50.02%) underwent laparoscopic hernia repair, and 6008 (49.98%) underwent open hernia repair. Laparoscopic approach provided non-significance benefit on pain during sexual activity (RR 0.57; 95% CI 0.18, 1.76), Vas deferens injury (RR 0.46; 95% CI 0.13, 1.63), orchitis (RR 0.84; CI 0.61,1.17), scrotal hematoma (RR 0.99; CI 0.62,1.60), and testicular atrophy (RR 0.46; CI 0.17,1.20). Meanwhile, the open inguinal hernia approach seems to perform better for cord seroma complications and testicular pain. CONCLUSION: There is no advantage of laparoscopic inguinal hernia repair over an open approach concerning sexual dysfunction. On the contrary, there is an increasing risk of cord seroma after laparoscopic inguinal hernia repair with statistical significance.

Postoperative Spinal Hematoma and Seroma.

Fluid collections after spine surgery are rare complications, although potentially grave, and may be broadly grouped into two major categories. Symptomatic postoperative epidural hematomas have some known risk factors and can present with a widely variable profile of signs and symptoms. Treatment involves emergent surgical evacuation to reduce the risk of permanent neurologic deficit. Postoperative seroma may lead to disruption of wound healing and deep infection and has been associated with the use of recombinant human bone mineral protein. These diagnoses may present diagnostic challenges; thorough understanding of the involved pathophysiology, meticulous clinical evaluation, and radiographic interpretation are critical to appropriate management and optimal outcome.

Incidence of postoperative complications in patients with breast cancer depending on the type of drain.

INTRODUCTION: Postoperative complications in patients with breast cancer delay the initiation of adjuvant therapy, prolong the length of hospitalization and reduce the patients' quality of life. Although their incidence can be influenced by many factors, the connection with the type of drain is insufficiently studied in the literature. The aim of this study was to assess whether there is an association between the use of a different drainage system and the occurrence of postoperative complications. METHODS: The data of 183 patients included in this retrospective study were collected from the information system of the Silesian Hospital in Opava and then statistically analyzed. These patients were divided into two groups according to the type of drain used - a Redon drain (active drainage) was used in 96 patients, and a capillary drain (passive drainage) was used in 87 patients. The incidence of seromas and hematomas, the duration of drainage and the amount of wound drainage were compared between the individual groups. RESULTS: The incidence of postoperative hematomas was 22.92% in the group of patients with the Redon drain, and 10.34% in patients with the capillary drain (p=0.024). The incidence of postoperative seromas was comparable for the Redon drain (39.6%) or the capillary drain (35.6%) (p=0.945). No statistically significant differences were found in the drainage time or the amount of wound drainage. CONCLUSION: A statistically significantly lower incidence of postoperative hematomas was observed when using a capillary drain compared to the use of a Redon drain in patients after breast cancer surgery. The drains were comparable with respect to seroma formation. None of the studied drains was significantly more beneficial in terms of the total drainage time and the total amount of wound drainage. KEY WORDS: breast cancer, postoperative complications, drain, hematoma.

The Timing of Acute and Late Complications Following Mastectomy and Implant-based Reconstruction.

BACKGROUND/OBJECTIVE: Implant-based breast reconstruction is a common plastic surgery procedure with well-documented clinical outcomes. Despite this, the natural history and timing of key complication endpoints are not well described. The goal of this study is to determine when patients are most likely to experience specific adverse events after implant-based reconstruction. METHODS: Retrospective consecutive series of patients who received mastectomy and implant-based reconstruction over a 6-year period were included. Complications and unfavorable outcomes including hematoma, seroma, wound infection, skin flap necrosis, capsular contracture, implant rippling, and implant loss were identified. A time-to-event analysis was performed and Cox regression models identified patient and treatment characteristics associated with each outcome. RESULTS: Of 1473 patients and 2434 total reconstructed breasts, 785 complications/unfavorable outcomes were identified. The 12-month cumulative incidence of hematoma was 1.4%, seroma: 4.3%, infection: 3.2%, skin flap necrosis: 3.9%, capsular contracture: 5.7%, implant rippling: 7.1%, and implant loss: 3.9%. In the analysis, 332/785 (42.3%) complications occurred within 60 days of surgery; 94% of hematomas, 85% of skin necrosis events, and 75% of seromas occurred during this period. Half of all infections and implant losses also occurred within 60 days. Of the remaining complications, 94% of capsular contractures and 93% of implant rippling occurred >60 days from surgery. CONCLUSIONS: Complications following mastectomy and implant-based reconstruction exhibit a discrete temporal distribution. These data represent the first comprehensive study of the timing of adverse events following implant-based reconstruction. These findings are immediately useful to guide postoperative care, follow-up, and clinical trial design.

LAPAROSCOPIC INGUINAL HERNIA REPAIR: THE LONG-TERM ASSESSMENT OF CHRONIC PAIN AND QUALITY OF LIFE.

BACKGROUND: Laparoscopic approaches to inguinal hernia repair include transabdominal extraperitoneal and transabdominal preperitoneal, both of which are widely performed and employ mesh. Indicators of success for these surgical procedures include incidence of complications, time to return to daily activities, incidence of postoperative chronic pain, and the long-term postoperative patient satisfaction. OBJECTIVE: This study aimed to evaluate and compare long-term postoperative incidence of chronic pain and overall quality of life among patients undergoing transabdominal extraperitoneal or transabdominal preperitoneal inguinal hernia repair. METHODS: This was a retrospective cross-sectional study. Medical records were analyzed, and the SF-36 questionnaire and Visual Analog Scale were applied to assess quality of life and chronic pain in patients undergoing laparoscopic inguinal hernia repair between January 2017 and February 2021. RESULTS: A total of 167 patients status post laparoscopic inguinal hernia repair, who were 3 months postoperatively or longer, were included in the study. Among the early complications seen, seroma was most common in the transabdominal preperitoneal group (p=0.04). Subsequently, 40 of the initial 167 patients answered to the survey instrument (SF-36 and Visual Analog Scale). Mean patient-reported pain (Visual Analog Scale score) was statistically similar between groups, with 1.29 for transabdominal preperitoneal and 1.68 for transabdominal extraperitoneal (p=0.92). In the domains evaluated by the SF-36, there was no significant difference between the samples. CONCLUSION: Both transabdominal extraperitoneal and transabdominal preperitoneal techniques for hernia repair have similar results in the late postoperative period regarding quality of life and prevalence of chronic pain. They are also comparable in terms of major early postoperative complications, except for seroma, with a higher incidence in patients undergoing transabdominal preperitoneal.

Effect of Prophylactic Negative-Pressure Wound Therapy for High-Risk Wounds in Colorectal Cancer Surgery: A Randomized Controlled Trial.

OBJECTIVE: To determine the effect of prophylactic negative-pressure wound therapy (pNPWT) in patients at high risk of surgical wound complications (SWCs) who underwent colorectal cancer (CRC) surgery. METHODS: In an open-label randomized controlled trial, 50 patients who underwent open CRC surgery between November 2018 and February 2020 were included. Participants were randomly assigned to the pNPWT group (n = 24) or control group (n = 26). For patients in the pNPWT group, the pNPWT device was placed on the wound for 7 days, whereas for patients in the control group, the wound was covered with a sterile gauze dressing. The primary outcome measured was 30-day SWCs: surgical site infection, hematoma, seroma, and wound dehiscence/evisceration. Secondary outcomes included postoperative wound infection assessment score and length of postoperative hospital stay. RESULTS: The incidence of 30-day SWCs differed significantly between the pNPWT and control groups (16.7% vs 53.8% respectively, P = .006). Patients in the pNPWT group had a significantly lower incidence of seroma than did those in the control group (8.3% vs 34.6%, P = .025). Surgical site infection occurred in 10 of 50 patients (20%) in the study: two (8.3%) in the pNPWT group and eight (30.8%) in the control group (P = .048). No hematomas or wound dehiscence/evisceration were noted in the study. There was no difference in median length of stay between groups (P = .153). CONCLUSIONS: This study confirmed that pNPWT effectively helps prevent SWCs in high-risk wounds after open CRC surgery.

Prophylactic onlay mesh at emergency laparotomy: promising early outcomes with long-acting synthetic resorbable mesh.

BACKGROUND: Careful surgical strategy is paramount in balancing the prevention of fascial dehiscence, incisional hernia (IH) and fear of additional mesh-related wound complications post-laparotomy. This study aims to review early outcomes of patients undergoing an emergency laparotomy with prophylactic TIGR® mesh, used to reduce early fascial dehiscence and potential subsequent IH. METHOD: A retrospective, ethically approved review of 24 consecutive patients undergoing prophylactic TIGR® mesh placement during emergency laparotomies by a single surgeon between January 2017 and June 2021 at a University Hospital. A standardized approach included onlay positioning of the mesh, small-bite fascial closure, and a wound bundle. We recorded patient demographics, operative indications, findings, degree of peritonitis, postoperative complications, and mortality. RESULT: The study included 24 patients; 16/24 (66.6%) were female and median age was 72.5 (range 31-86); 14/24 patients were ASA grade III or greater; 4/24 patients (16.6%) developed six complications and 3/6 occurred in a single patient. Complications included subphrenic abscess, seroma, intrabdominal hematoma, enterocutaneous fistula leading to deep wound infection and small bowel perforation. Five (20.8%) patients died in hospital; central venous catheter sepsis (n = 1), fungal septicaemia (n = 1) and multiorgan failure (n = 3). Surgical site infection and seroma rates were low, occurring in 2/24 patients (4% each). CONCLUSION: This study has identified that prophylactic onlay mesh in patients undergoing an emergency laparotomy is not associated with significant wound infection or seroma when used with an active wound bundle. The wider use of TIGR® to prevent fascial dehiscence and potential long-term IH prevention should be considered.

[Initial and Long-term Results of Omental Flap Coverage for the Complications after Thoracic Aortic Aneurysm Repair].

OBJECTIVE: Here, we will review the initial remote results of omental flap coverage (OFC) after thoracic aortic aneurysm repair and report on its efficacy and problems. METHODS: We performed 567 thoracic aortic aneurysm surgeries from January 2007 to December 2021, including OFC in 16 patients( 2.8%, 10 males, mean age 65 years:range 30-82 years) who underwent OFC. RESULTS: OFC was performed in 14 cases of mediastinitis and 2 cases of perigraft seroma. 13 cases were performed at the same admission as the initial surgery, and 3 cases were performed after the discharge. The causative organisms of mediastinitis were methicillin-resistant Staphylococcus aureus (MRSA) in 4 cases, methicillin-resistant coagulase negative Staphylococcus( MRCNS) in 2 cases, Staphylococcus, Acinetobacter, Klebsiella, and methicillin-resistant Staphylococcus epidermidis( MRSE) in 1 case each, and unknown in 4 cases. All cases underwent successful reoperation with OFC alone, except in 1 case in which redo root replacement was performed for an anastomotic pseudoaneurysm. The overall hospital mortality was 31% (4 cases for MOF, 1 case for anastomotic hemorrhage). Of the 11 patients who were discharged alive, two died remotely (heart failure, senility), and no cases of reinfection were encountered. CONCLUSION: OFC is an effective treatment not only for mediastinitis but also for perigraft seroma while significantly reducing the risk of reinfection.

Seroma after Simple Mastectomy in Breast Cancer-The Role of CD4+ T Helper Cells and the Evidence as a Possible Specific Immune Process.

Seroma development after breast cancer surgery is the most common postoperative complication seen after mastectomy but neither its origin nor its cellular composition is known. To investigate the assumption of immunological significance, one of the first aims of this pilot study is to describe the cellular content of collected seroma fluids and its corresponding serum in patients with simple mastectomy after needle aspiration, as well as the serum of healthy controls. The content of red blood cells (RBC) was measured by haemato-counter analyses, and the lymphocyte identification/quantification was conducted by flow cytometry analyses in seroma fluid (SFl) and the sera of patients (PBp) as well as controls (PBc). Significantly lower numbers of RBCs were measured in SFl. Cytotoxic T cells are significantly reduced in SFl, whereas T helper (Th) cells are significantly enriched compared to PBp. Significantly higher numbers of Th2 cells were found in SFl and PBp compared to PBc. The exact same pattern is seen when analyzing the Th17 subgroup. In conclusion, in contrast to healthy controls, significantly higher Th2 and Th17 cell subgroup-mediated immune responses were measured in seroma formations and were further confirmed in the peripheral blood of breast cancer (including DCIS) patients after simple mastectomy. This could lead to the assumption of a possible immunological cause for the origin of a seroma.

[Lipoabdominoplasty in post-bariatric Surgery: a relevant Alternative to Fleur-de-Lis abdominoplasty?] / Lipoabdominoplastik in der postbariatrischen Chirurgie: eine relevante Alternative zur Fleur-de-Lis-Abdominoplastik?

BACKGROUND: The number of bariatric procedures, and thus also the number of post-bariatric operations, has increased dramatically in recent years. Although long scars are common in post-bariatric surgery and accepted in favour of body shape reconstruction, we increasingly notice the wish for aesthetically pleasing results in addition to the desire for body contouring. In particular, Fleur-de-Lis abdominoplasty (FdL) is viewed critically by younger patients after massive weight loss due to the visible vertical scar. Surgeons are also often bothered by the unsatisfying aesthetic outcome as well as the higher rate of complications. METHODS: Retrospective analysis of 20 female patients with massive weight loss following bariatric surgery, who received lipoabdominoplasty instead of Fleur-de-Lis abdominoplasty in the period from January 2019 to June 2020. Data analysis was based on measurements of preoperative vertical and horizontal excess skin and fat (Pittsburgh Rating Scale), Body Mass Index, surgical technique and final result. RESULTS: Twenty female patients with an indication for FdL abdominoplasty underwent radical liposuction of the abdomen combined with abdominoplasty. The original weight before massive weight reduction ranged between 100 and 168 kg. Average weight reduction was 56.5 kg. The mean BMI was 27.3 kg/m². The average age of our cohort was 40 years. One patient (5 %) had a major complication. This was an infected seroma which could be treated conservatively. Two other patients (10 %) developed an uninfected seroma as a minor complication. CONCLUSION: Our work shows that lipoabdominoplasty can be performed safely and well even in patients after massive weight loss. It is possible to achieve good body contours without vertical incisions and with a high degree of patient satisfaction. The number of patients who have to undergo FdL abdominoplasty can be successfully reduced by this technique.

Does an Internal Joint Stabilizer and Standardized Protocol Prevent Recurrent Instability in Complex Persistent Elbow Instability?

BACKGROUND: The treatment of complex persistent elbow instability after trauma is challenging. Previous studies on treatments have reported varied surgical techniques, which makes it difficult to establish a therapeutic algorithm. Furthermore, the surgical procedures may not sufficiently restore elbow stability, even with an additional device, and a noted high rate of arthritis progression.While a recently developed internal joint stabilizer effectively treats elbow instability, its clinical application for complex persistent elbow instability is limited and the standardized protocol is not well described. Additionally, we want to know whether the arthritis progression will cause a negative impact on the functional outcomes of complex persistent elbow instability. QUESTIONS/PURPOSES: (1) Does treatment of complex persistent elbow instability with a hinged internal joint stabilizer and a standardized protocol prevent recurrent instability and other complications? (2) What are the pre- to postoperative improvements in pain, disability, elbow performance, and ROM? (3) Is the development of post-traumatic arthritis associated with worse pain, disability, elbow performance, and ROM? METHODS: Between September 2014 and October 2019, we treated 22 patients for persistent dislocation or subluxation after initial treatment of traumatic elbow fracture-dislocations. Of those, we considered patients who were at least 20 years of age, with an interval of 6 weeks or more between the injury (initial treatment) and the index reconstructive procedure, which had been performed at our institute, as potentially eligible. During that time, we used an internal joint stabilizer with a standardized protocol for posttraumatic complex persistent elbow instability. We performed total elbow replacements in patients older than 50 years who had advanced elbow arthritis. Based on that, 82% (18 of 22) of patients were eligible; 14% (3 of 22) were excluded because total elbow replacements was undertaken, and another 5% (1 of 22) were lost before the minimum study follow-up of 1 year (median 24 months [range 12 to 63]), leaving 64% (14 of 22) for analysis in this retrospective study. We treated 14 patients (14 elbows) with posttraumatic complex persistent elbow instability with an internal joint stabilizer and a standardized protocol that comprised debridement arthroplasty with ulnar neurolysis, restoration of bony and ligamentous (reattachment) structures, application of an internal joint stabilizer, and early rehabilitation. There were eight men and six women in this study, with a median (range) age of 44 years (21 to 68). The initial elbow fracture-dislocation injury pattern was a terrible triad injury in seven patients, a posterolateral rotatory injury in four patients, and a posterior Monteggia fracture in three patients. Preoperative and follow-up radiographs were reviewed for evidence of recurrent instability and arthritis. Complications such as wound infection, seroma, neurovascular injury, and hardware complications were ascertained through chart review. Preoperative and postoperative VAS score for pain, DASH, and Mayo Elbow Performance Scores (MEPS) were collected and compared. Furthermore, extension-flexion and supination-pronation arcs were collected by chart review. We divided the patients into two groups according to whether or not they developed posttraumatic arthritis. We then presented the differences between pain, disability, elbow performance, and ROM. The hinged internal joint stabilizer was removed using another open procedure under general anesthesia 6 to 8 weeks after surgery. RESULTS: There were no recurrent instability during and after device removal. Seven patients developed complications, including wound infection, seroma, neurovascular injury, hardware complications, and heterotopic ossification. Two patients had complications related to internal joint stabilizers and three had complications linked to radial head prostheses. Median (range) preoperative to postoperative changes included decreased pain (VAS 5 [2 to 9] to 0 [0 to 3], difference of medians -5; p < 0.001), decreased disability (DASH 41 [16 to 66] to 7 [0 to 46], difference of medians -34; p < 0.001), improved function (MEPS 60 [25 to 70] to 95 [65 to 100], difference of medians 35; p < 0.001), improved extension-flexion arc (40° [10° to 70°] to 113° [75° to 140°], difference of medians 73°; p < 0.001), and supination-pronation arc (78° [30° to 165°] to 148° [70° to 175°], difference of medians 70°; p < 0.001). Between patients with and without development of post-traumatic arthritis, there were no differences in postoperative pain (VAS 0 [0 to 3] to 0 [0 to 1], difference of medians 0; p = 0.17), disability (DASH 7 [0 to 46] to 7 [0 to 18], difference of medians 0; p = 0.40), function (MEPS 80 [65 to 100] to 95 [75 to 100], difference of medians 15; p = 0.79), extension-flexion arc (105° [75° to 140°] to 115° [80° to 125°], difference of medians 10°; p = 0.40), and supination-pronation arc (155° [125° to 175°] to 135° [70° to 160°], difference of medians -20°; p < 0.18). CONCLUSION: In this small, retrospective study, we found that an internal joint stabilizer with a standardized treatment protocol could maintain concentric reduction while allowing early functional motion, and that it could improve clinical outcomes for patients with complex persistent elbow instability. However, patients must be counseled that the complications related to the radial head prostheses may occur, and that the benefits of early motion must compensate for an additional removal procedure and the risk of seroma formation. LEVEL OF EVIDENCE: Level IV, therapeutic study.

The comparison of self-gripping mesh and conventional mesh in laparoscopic inguinal hernia repair: the results of meta-analysis.

Self-gripping mesh is widely used in laparoscopic inguinal hernia repair and some researches report its advantages compared with conventional mesh. The aim of this study was to assess outcomes of self-gripping mesh and conventional mesh in laparoscopic inguinal hernia repair. A systematic literature review was undertaken to identify studies comparing the results of self-gripping mesh and conventional mesh in laparoscopic inguinal hernia repair. Outcomes, including recurrence, chronic pain, operation time, hematoma, seroma and infection, were measured. Four randomized controlled trials and 1 prospective comparative study were analyzed. The incidence of chronic pain in self-gripping group was significantly lower than that in conventional group (OR 0.43, 95% CI 0.20, 0.93, P = 0.03), and there was no significant difference in hernia recurrence (OR 0.31, 95% CI 0.03, 3.06, P = 0.32), operation time (MD 0.06, 95%CI - 2.32, 2.44, P = 0.96), hematoma (OR 1.01, 95% CI 0.33, 3.07, P = 0.99) and seroma (OR 0.90, 95% CI 0.49, 1.66, P = 0.73). Laparoscopic inguinal hernia repair using self-gripping mesh is associated with a decreased incidence of chronic pain compared with conventional mesh, without increased postoperative complications.

Efficacy and safety of mesh closure in preventing wound failure following emergency laparotomy: a systematic review and meta-analysis.

AIMS: To evaluate comparative outcomes of emergency laparotomy closure with and without prophylactic mesh. METHODS: A systematic review was performed via literature databases: PubMed, Cochrane Library, Science Direct, and Google Scholar. Studies were examined for eligibility and included if they compared prophylactic mesh closure to the conventional laparotomy closure following emergency abdominal surgery. Both acute wound failure and incisional hernia (IH) occurence were our primary outcomes. Secondary outcomes included surgical site infection (SSI), seroma/hematoma formation, Clavien-Dindo complications (score ≥ 3), total operative time, and length of hospital stay (LOS). RESULTS: Two randomised controlled trials (RCTs) and four comparative studies with a total of 817 patients met the inclusion criteria. Overall acute wound failure and incisional hernia rate was significantly lower in the mesh group compared to non-mesh group (odd ratio (OR) 0.23, p = 0.002) and (OR 0.21, p = 0.00001), respectively. There was no significant difference between the two groups regarding the following outcomes: total operative time (mean difference (MD) 21.44, p = 0.15), SSI (OR 1.47, p = 0.06), seroma/haematoma formation (OR 2.74, p = 0.07), grade ≥ 3 Clavien-Dindo complications (OR 2.39, p = 0.28), and LOS (MD 0.26, p = 0.84). CONCLUSION: The current evidence for the use of prophylactic mesh in emergency laparotomy is diverse and obscure. Although the data trends towards a reduction in the incidence of IH, a reliable conclusion requires further high-quality RCTs to fully assess the efficacy and safety of mesh use in an emergency setting.

Aplicabilidad de la clasificación Clavien-Dindo en las complicaciones quirúrgicas del procedimiento de Nuss / Applicability of Clavien-Dindo classification in nuss procedure surgical complications

OBJETIVOS: La intervención de Nuss es una cirugía segura, pero no está exenta de complicaciones. La clasificación de Clavien-Dindo (1992) permite registrar complicaciones de cualquier operación. Nuestro objetivo es demostrar la aplicabilidad de dicha clasificación para el estudio de las complicaciones de la cirugía de Nuss. MATERIAL Y MÉTODOS: Presentamos una serie retrospectiva de pacientes afectos de PE intervenidos entre enero de 2010 y enero de 2018 y su morbilidad asociada a la cirugía de Nuss hasta la retirada de la barra. Dichas complicaciones se agruparán mediante la clasificación de Clavien-Dindo. RESULTADOS: Se recogen un total de 31 pacientes. La media de edad fue 14,67 años (4-27 años), con una media de índices de Haller de 6,06 (3,35-14,14) y una media de índices de corrección del 41,2% (16-87%). Se observaron complicaciones leves I-IIIb de la clasificación de Clavien-Dindo en el 35,48% de los pacientes. Se constató seroma en cuatro pacientes (12%), de los cuales uno presentó sobreinfección y otro, dehiscencia de herida. En seis pacientes se observó movilización de la barra y/o estabilizador y en 1 paciente, edema agudo de pulmón posoperatorio (3%). De los 11 pacientes que presentaron complicaciones, solo seis requirieron reintervención: cinco de ellos por movilización de la prótesis y uno por infección no resuelta con antibioterapia endovenosa. CONCLUSIONES: La clasificación de Clavien-Dindo se emplea cada vez más como una forma de unificar los criterios de las complicaciones quirúrgicas, permitiendo comparar los resultados obtenidos. Comprobamos que es perfectamente factible y reproducible para reflejar la morbilidad del procedimiento quirúrgico de Nuss y poder compararla con otros grupos

OBJECTIVES: Nuss procedure is a safe surgery but not exempt from complications. Clavien-Dindo classification (1992) allows complications of any surgery to be recorded. Our objective was to prove its applicability in the study of Nuss procedure complications. MATERIALS AND METHODS: We present a retrospective series of PE patients undergoing surgery from January 2010 to January 2018. Nuss procedure associated morbidity prior to bar removal was studied. Complications were stratified according to Clavien-Dindo classification. RESULTS: A total of 31 patients were included. Mean age was 14.67 years (4-27 years), with a mean Haller index of 6.06 (3.35-14.14) and a mean correction index of 41.2% (16-87%). Clavien-Dindo classification I-IIIb mild complications were recorded in 35.48% of patients. Seroma was found in 4 patients (12%), of whom 1 had superinfection and 1 had wound dehiscence. In 6 patients, bar and/or stabilizer mobilization was noted, and in 1 patient, postoperative acute pulmonary edema (3%) was observed. Of the 11 patients with complications, only 6 required re-intervention -5 as a result of prosthesis mobilization, and 1 as a result of infection not resolved with intravenous antibiotic therapy. CONCLUSIONS: Clavien-Dindo classification is being increasingly used as a way of unifying surgical complication criteria by comparing results. Our study demonstrated that such classification is a feasible and reproducible method when it comes to reflecting Nuss procedure morbidity and comparing it with other groups

Systematic analysis of post-treatment soft-tissue edema and seroma on MRI in 177 sarcoma patients.

PURPOSE: To assess post-treatment subcutaneous edema, muscle edema, and seroma in MRI after soft-tissue sarcoma (STS) resection with regard to muscle involvement of STS and therapy. METHODS: In all, 177 patients were included and received 1.5-T MRI follow-up examinations after treatment. Post-treatment changes were classified according to type of therapy (therapy 1-surgery; therapy 2-surgery with radiation therapy) and primary tumor localization in soft tissue (localization 1, subcutaneous tissue; localization 2, muscle involvement). Subcutaneous and muscle edema were divided into three grades: grade 0, absence of edema; grade 1, low-to-moderate edema; and grade 2, high-grade edema. RESULTS: The mean age of the patients was 55.7 ± 18.2 years and the mean volume of the resected primary STS was 321.5 cm3. After therapy 1 of a sarcoma in localization 1, patients significantly more often showed low-grade subcutaneous tissue edema and an absence of muscle edema (p < 0.001) than high-grade edema. The risk for grade 2 subcutaneous tissue and muscle edema significantly increased with a tumor in localization 2 (RR = 2.58, p = 0.016 and RR = 15, p = 0.0065/RR = 2.05 , p = 0.021, respectively) and after therapy 2 (RR = 15, p = 0.0087 and RR = 2.05, p < 0.0001, respectively). Of the patients with sarcoma in localization 2, 88% developed grade 2 muscle edema after therapy 2; 40% of the patients developed post-treatment seroma. The risk for seroma is significantly higher after surgery and radiation therapy than after surgery alone (p < 0.001). CONCLUSION: High-grade postoperative subcutaneous and muscle edema are significantly associated with muscle involvement of primary STS both in patients with and without radiation therapy. The risk for seroma is significantly higher after surgery with additional radiation therapy than after surgery alone.