Effect Of Surgery Research Articles

Video-assisted thoracic surgery-Indications, importance and technique

Video-assisted thoracic surgery (VATS) is asafe and effective surgical procedure. Completely minimally invasive operations must be distinguished from hybrid procedures. The VATS can be used for diagnostic and treatment purposes for all oncological and non-oncological diseases of the thoracic organs. The VATS is the preferred surgical procedure for alarge number of diseases. Nevertheless, the procedure-specific limitations of VATS must be taken into account in individual cases. In the hands of experienced surgeons complex thoracic surgical procedures can be safely performed. In order to benefit from the advantages of this minimally invasive surgical procedure, integration into afast-track concept is mandatory.

Knowledge, attitude and perception of epilepsy patients toward epilepsy surgery at Jordan University hospital.

Epilepsy is a condition associated with stigma and considerable morbidity, placing a significant burden on patients and their families. It is fundamental to be mindful of the fact that a substantial number of patients remain unaware of the effective surgical procedures that have shown great success in many cases, drawing upon the global underutilization of epilepsy surgery (ES). In this study, we explore the knowledge and attitudes of epilepsy patients towards ES at Jordan University Hospital (JUH). This study aims to evaluate epilepsy patients' attitudes and knowledge regarding ES at JUH, identify the variables affecting their attitudes, and compare the results with other Middle Eastern and Western reports. In this cross-sectional study, conducted between the 1st of March and the 1st of September 2023, we gathered and analyzed data from epilepsy patients in the neurology clinic at JUH. A self-administered questionnaire was utilized, with questions emphasizing patients' demographics, disease status, and their knowledge and attitude toward ES. In order to determine the predictors of attitude, logistic regression was performed on the univariate analysis using the SPSS software. This study included 145 participants, most of them within the 17 and 29 age group, and a mean age at first seizure of 21.6years. Our sample included more generalized than focal epilepsy patients, with an additional 30% of patients being unaware of their specific seizure type. 46% of patients were on at least 2 antiepileptic drugs (AEDs), especially among the focal epilepsy group and 61% were non-adherent to their medications. Eighty-two participants (57%) were aware of ES, yet only twenty-five have shown a high level of understanding. The majority of patients (77%) have expressed a positive attitude towards ES. Although patients' attitude was significantly associated with their first impression towards ES, age, age at first seizure and not possessing a driving license, the regression model did not reveal significant predictors. Despite the perception of 94% of the patients that ES has a moderate to high risk, this did not have any significant influence on their final attitude. Furthermore, our results concluded that income, insurance type, educational level, frequency of seizures, and poor academic outcome played no significant role in patients' final attitude towards ES. ES is no longer considered an "experimental" or "last resort" treatment option. The results emphasize the importance of adapting educational interventions to improve knowledge and understanding of ES and implement measures to surgically pre-evaluate potential candidates. Further research should be done to overcome and address this gap in underutilization. In our study, we conclude that this gap is still present especially in people who are in need and may potentially be candidates for ES, but with the displayed positive attitude in the majority of our patients we are optimistic that the remaining barriers can be overcome, and that the results obtained from our study will be helpful for positive advancements in patients' quality of life.

Prevalence and Risk Factors of Acute Kidney Injury After Colorectal Cancer Surgery.

Acute kidney injury is a sentinel event affecting colorectal cancer patients either as a consequence of surgery or systemic chemotherapy. It is highly correlated with both short and long-term adverse outcomes. This work aimed to study the prevalence, risk factors, and impact on survival of postoperative (PO-AKI) and post-chemotherapy (PC-AKI) after colorectal cancer (CRC) surgery in Egyptian patients. Data of the patients with CRC who underwent surgery over the previous 5 years was retrieved from an internet-based medical system. The incidence of PO-AKI and PC-AKI was calculated, the rate and time to resolution of PO-AKI were recorded, and the possible predictors of AKI were assessed using univariate and multivariate analysis; also, the impact of AKI on patients' survival was tested using survival curves. Five hundred sixty-one cases fulfilled the inclusion criteria and were included in the study. PO-AKI was detected in 10.5% of the patients. Significant risk factors included intraoperative hypotension, sepsis, hypoalbuminemia, amount of intraoperative bleeding, neoadjuvant therapy, and preoperative chronic kidney disease (CKD). However, only neoadjuvant treatment (hazard ratio (HR) 2.2) and CKD (HR 3.3) maintained significant risk in the multivariate analysis. PC-AKI was observed in 18.7% of the patients treated. Significant risk factors were previous CKD and the chemotherapy type, mainly affecting those who received Irinotecan-based therapy. The hazard ratio was 8.5 and 2.4 respectively, in multivariate analysis. The overall survival was significantly worse in those who developed PO- or PC-AKI (p < 0.001). AKI affects more than 25% of CRC patients after surgery and/or chemotherapy. Modifiable risk factors include preoperative hypoalbuminemia, intraoperative bleeding, and/or intraoperative hypotension. While, the more important risk factors were non-modifiable including CKD, neoadjuvant therapy, and Irinotecan-containing regimens. Most kidney injuries are stage I; however, they are associated with shorter overall survival.

Risk of Biopsy and Surgical Treatment of Subglottic Paragangliomas: A Case Report.

This report describes a rare case of a paraganglioma occurring beneath the vocal folds. During the preoperative biopsy, we encountered significant hemorrhage, forcing us to stop the procedure and preventing us from obtaining a definitive diagnosis. Despite these challenges, the eventual surgery had a good outcome.

Examining timing of periorbital interventions in patients with upper division facial paralysis.

Facial paralysis is a life-altering condition that may arise from various etiologies, ranging from trauma to malignancy. Permanent facial paralysis may occur secondary to facial nerve sacrifice or irreversible damage to the nerve. In these particularly devastating cases, protection and maintaining function of the eye is paramount. There are many effective lagophthalmos corrective surgical procedures available for these patients. While placement of eyelid weights and lid tightening surgeries are the cornerstone of eyelid rehabilitation, limited information exists on whether the timing of eyelid interventions in the setting of permanent facial paralysis impact outcomes, including need for revision surgery. A single-center retrospective chart review was performed for patients with irreversible facial paralysis treated with an upper eyelid weight between 2013 to 2022. Electronic health records were acquired to obtain facial paralysis etiology, associated clinical characteristics, the type of intervention, and the timing of intervention. Patients were classified as immediate if the eyelid weight operation occurred within 29 days of the initial facial paralysis and delayed if the surgery occurred 30 days or more after initial presentation. Outcomes were assessed in terms of revision procedures and surgical complications. There were 70 patients in total, with 35 patients in the immediate category and 35 patients in the delayed category. The most common etiology related to parotid gland pathology, and 58.6% of patients had facial paralysis from cancer-related surgeries. There were no significant differences in revision rates (p < 0.208) or in the types of procedures (p = 0.077) between the two groups. The complication rates also did not differ significantly between groups; however, there were only complications in the delayed intervention group. These findings suggest there is no difference in postoperative complications between groups, including the need for revision surgeries when comparing groups with immediate or delayed intervention. Thus, treatment plans should be customized based on patient and provider preferences.

Custom-Made 3D-Printed Augments and Cages: An Effective Solution for Managing Severe Acetabular Bone Loss.

Total hip arthroplasty (THA) is recognized as one of the most effective surgical procedures for the treatment of end-stage hip arthritis. However, the increasing number of primary THA cases has led to a corresponding rise in the frequency of revision surgeries, which are often more complex and challenging due to severe acetabular bone loss. In such cases, managing Paprosky type 3A and 3B defects requires precise implant design and advanced surgical techniques. Standard acetabular augments and anti-protrusio cages are commonly used, but they often fail to provide the necessary stability, leading to re-revision rates as high as 36% within 10 years. This case series explores the efficacy of custom-made 3D-printed acetabular augments and cages in managing severe acetabular bone loss during revision THA. This retrospective case series includes seven patients who underwent revision THA for Paprosky grade 3 acetabular bone loss between January 2023 and April 2024 at two high-volume tertiary care centers. The mean age of the patients was 45 years, with three males and four females included in the study. Pre-operative planning involved advanced imaging techniques, including 3D-computed tomography scans and custom virtual modeling, to design the acetabular components tailored to each patient's specific anatomical requirements.During the surgeries, custom-made 3D-printed titanium augments and cages were used. These implants were fabricated using in-house software, and the turnaround time from the decision to surgery was approximately 10 days. Post-operatively, the planned 3D model was superimposed on post-operative radiographs to assess implant placement accuracy. The Harris hip score at the final follow-up averaged 69.16, with no signs of implant loosening observed. Custom-made 3D-printed acetabular augments and cages offer a reliable and cost-effective solution for managing severe acetabular bone loss in revision THA. Despite the small sample size and short follow-up period, the results demonstrate the potential of these custom implants to improve outcomes in complex acetabular reconstructions. Further studies with larger sample sizes and longer follow-up periods are needed to confirm these findings and establish long-term efficacy.

Surgical outcomes of video-assisted neck surgery for papillary thyroid carcinoma.

New approaches to endoscopic thyroid surgery have been developed to improve cosmetic results, one of which is video-assisted neck surgery (VANS). The present study investigates the safety and effectiveness of thyroidectomy by VANS as oncologic surgery for papillary thyroid carcinoma (PTC). The subjects of this retrospective study were 121 patients with PTC, who underwent hemi-thyroid lobectomy and central lymph node dissection via open surgery (n = 102) or VANS (n = 19) at Tokushima University Hospital between 2011 and 2023. We performed 1:1 propensity score matching and then compared the surgical outcomes between the two matched groups. Propensity score matching generated 18 distinct examination pairs. The VANS group had significantly less blood loss (P = 0.003), but a longer operative time (P < 0.001) than the open thyroidectomy group. There were two cases of transient recurrent laryngeal nerve paralysis and one case of recurrence in the lateral regional lymph nodes in the VANS group. However, no significant differences were observed in the incidence of complications (P = 0.243) or recurrence (P = 0.500) between the two groups. VANS is a safe and effective surgical procedure for PTC, but longer follow-up is needed to assess tumor recurrence.

Comparative Outcomes of Biportal Endoscopic Decompression, Conventional Subtotal Laminectomy, and Minimally Invasive Transforaminal Lumbar Interbody Fusion for Lumbar Central Stenosis.

Spinal stenosis is a prevalent condition; however, the optimal surgical treatment for central lumbar stenosis remains controversial. This study compared the clinical outcomes and radiological parameters of 3 surgical. unilateral laminectomy bilateral decompression with unilateral biportal endoscopy (ULBD-UBE), conventional subtotal laminectomy (STL), and minimally invasive transforaminal lumbar interbody fusion (MIS-TLIF). This retrospective study included 86 patients, divided into ULBD-UBE (n=34), STL (n=24), and MIS-TLIF (n=28) groups. We evaluated demographics and perioperative factors and assessed clinical outcomes using the visual analogue scale (VAS), Oswestry Disability Index (ODI), and neurogenic intermittent claudication (NIC). Radiological parameters assessed included lumbar lordosis, L4S1 Cobb angle (L4S1), T12S1 Cobb angle (T12S1), increased cross-sectional dural area (CSA), dynamic angulation (DA), dynamic slip (DS), and development of postoperative instability. The ULBD-UBE group showed a significantly shorter hospital stay duration and operation time and reduced blood loss than the other groups (p<0.001). ULBD-UBE group showed a trend towards greater VAS and ODI improvement at 1 month and postoperative NIC symptom relief. Radiologically, MIS-TLIF group exhibited lower postoperative DA and DS (p<0.001), indicating higher postoperative stability. Postoperative instability was lower in the ULBD-UBE group (2.9%) than in the STL group (16.7%) and similar to the MIS-TLIF group (0.0%) (p=0.028). The CSA was highest in the MIS-TLIF group (295.5%) compared to that in the other groups (ULBD-UBE, 216.3%; STL, 245.2%) (p<0.001). Compared to other procedures, ULBD-UBE is a safe, effective, and viable surgical procedure for treating lumbar central stenosis.

Analysis of the efficacy and safety of endoscopic retrograde cholangiopancreatography for the treatment of pediatric pancreatobiliary diseases.

Traditional surgical procedures are highly invasive and risky for children with pancreatic and biliary diseases. Endoscopic retrograde cholangiopancreatography (ERCP) has been used mostly in adults because it is a safe and effective surgical procedure. Its application in children will contribute to the treatment and prognosis of children with pancreatic and biliary diseases. To analyze the efficacy and safety of ERCP for the treatment of pediatric pancreatobiliary diseases. A retrospective study was performed using the medical records of 101 pediatric patients who received treatment for pancreatobiliary diseases at Children's Hospital Capital Institute of Pediatrics from April 2022 to April 2024. The patients were divided into an observation group (n = 52, treated with ERCP) and a control group (n = 49, treated with traditional surgical methods). Diagnostic and therapeutic outcomes of ERCP were statistically analyzed. Treatment efficacy, time to resume eating, and hospital stay duration were compared between the two groups. Indicators of liver function were monitored preoperatively and one week postoperatively. Dynamic changes in C-reactive protein (CRP) and serum amylase levels were assessed preoperatively and at 6 and 24 hours postoperatively. Postoperative complications were also compared. Logistic multivariate regression was used to analyze the independent effect of ERCP on outcomes. For the observation group, 36 and 16 patients were diagnosed with biliary and pancreatic diseases, respectively. Compared with the control group, the observation group exhibited a higher overall effective rate (P < 0.05), shorter times to resume eating, shorter hospital stays (P < 0.05), and significantly improved postoperative liver function (P < 0.05). CRP and serum amylase levels were significantly increased in both groups at 6 and 24 hours postoperatively (P < 0.05), but were significantly lower in the observation group (P < 0.05). The observation group also had a lower incidence of complications (P < 0.05). ERCP was an independent factor affecting treatment efficacy, length of hospital stay, total bilirubin, aspartate aminotransferase, and alanine aminotransferase, CRP, serum amylase, and the occurrence of complications in children with pancreaticobiliary diseases (P < 0.05). ERCP effectively enhances the treatment efficacy of pediatric pancreatobiliary diseases, with a reduced inflammatory response, faster postoperative recovery, and fewer complications. ERCP is a safe and effective diagnostic and therapeutic method for pediatric pancreatobiliary diseases.

Medial degenerative disease of the knee without radiographic osteoarthritis is a good indication for medial open wedge high tibial osteotomy.

Medial open wedge high tibial osteotomy (MOWHTO) is a well-established surgical procedure for osteoarthritis (OA) of the knee with varus malalignment. However, it is uncertain whether MOWHTO is an effective surgical procedure for early OA. This study aimed to evaluate the clinical results of MOWHTO for early OA of the knee with varus malalignment. This was a retrospective analysis of 87 patients in whom varus malalignment was corrected by MOWHTO between January 2017 and December 2022. Kellgren-Lawrence grade 0-1 was defined as early OA and grade ≥ 2 as established OA. Range of motion at the knee, Forgotten Joint Score-12, Knee Injury and Osteoarthritis Outcome Score, and radiological findings were compared between the early OA group and the established OA group. The established OA group (n = 49) was significantly older than the early OA group (n = 38) (p = 0.02). There were no differences between the groups in preoperative or postoperative hip-knee-ankle angle or range of motion or in improvements in the Forgotten Joint Score-12 or Knee Injury and Osteoarthritis Outcome Score. The median follow-up duration was more than 24.0months in both groups. MOWHTO had a good clinical outcome in patients with early OA and varus malalignment over a median follow-up of 2years. III, retrospective study.

Outcomes of manual arcuate keratotomy with compression sutures for high regular postkeratoplasty astigmatism.

To report functional and refractive outcomes of manual arcuate keratotomy (AK) with compression sutures for high regular postkeratoplasty astigmatism. Department of Ophthalmology, Saarland University Medical Center, Homburg/Saar, Germany. Retrospective analysis. This study included 90 eyes with high regular postkeratoplasty astigmatism (>4 diopters [D]) who received AK with compression sutures between 2010 and 2022. Functional and refractive outcomes were assessed by evaluating topographic indices and by performing vector astigmatism and Fourier analysis. At last follow-up (mean 13.7 ± 16.6 months), corrected distance visual acuity improved from 0.59 ± 0.28 to 0.34 ± 0.25 logMAR. Cylinder magnitude decreased from 9.91 ± 2.88 to 5.42 ± 3.35 D. Surface asymmetry index, irregular astigmatism index, and corneal eccentricity index were equal to preoperative values, whereas surface regularity index approached normal values at last follow-up. Fourier analysis indicated a decrease in the regular astigmatic component, whereas nonregular components (asymmetry and higher-order irregularity) remained stable. In vector astigmatism analysis, target-induced astigmatism magnitude was 9.92 ± 2.86 D and surgically induced astigmatism magnitude was 10.16 ± 4.86 D (correction index of 0.91 ± 0.48) with a difference vector of 5.42 ± 3.35 D at last follow-up. Correction of astigmatism magnitude was adequate in 40% of the eyes, undercorrected in 30%, and overcorrected in 30%. Angle of error was <|22.5 degrees| in 88% resulting in a low risk of off-axis treatment. AK with compression sutures is a simple, relatively effective, and safe surgical procedure for astigmatism reduction after keratoplasty. In case of regular astigmatism, the procedure does not increase corneal irregularities. The remaining refractive error might be further corrected by spectacles, contact lenses, or toric intraocular lens implantation (in-the-bag/add-on), thus reducing the need for repeat keratoplasty.

Transduodenal ampullectomy is an effective surgical exploration procedure for unexplained dilation of the cholangiopancreatic duct

BackgroundThe clinical diagnosis and treatment of dilation of the cholangiopancreatic duct in patients with ambiguous ampullary disease, termed unexplained dilation of the cholangiopancreatic duct (UDCD), is commonly difficult. This study aimed to evaluate the applicability of transduodenal ampullectomy (TDA) for the diagnosis and treatment of UDCD.MethodsWe first proposed a surgical exploration procedure based on the TDA and applied it in a representative UDCD patient. We retrospectively analyzed the pathological diagnosis and prognosis of 14 patients at our hospital and 189 patients reported in existing studies who were treated with TDA between January 2010 and December 2022. ResultsTDA can be used to radically explore the ampullary region and harvest adequate pathological tissue, which is helpful for identifying the cause of UDCD. The diagnostic rate of intraoperative frozen pathology was greater than that of preoperative endoscopic biopsy (78.41% vs. 65.94%, P = 0.044). The postoperative complication rate was 27.07%, with a mortality rate of 0.00%. The 5-year survival rate was 68.31% in patients with adenocarcinoma, 85.99% in patients with adenoma with HGD/pTis, and 100% in patients with benign lesions, and these had a statistically significant difference (P = 0.021). ConclusionsTDA-based surgical exploration can be used as a safe and effective transitional procedure in the treatment of UDCD.

Assessing The Impact Of Surgical Approaches On Total HIP Replace-ment Outcomes: A Systematic Review

Total hip replacement is one of the most common and effective orthopedic surgical procedures to reduce pain and improve hip function in patients with severe conditions. This procedure has undergone many advances in the past few decades. However, there is debate among surgeons about which surgical approach is the most optimal to apply. This study aims to systematically assess and compare the outcomes of different surgical approaches in total hip replacement (THR) procedures. The method used in this study was a systematic literature review, in which literature was searched through academic databases such as PubMed, Scopus, and Google Scholar using relevant keywords. The collected data were then analyzed through three stages, namely data reduction, data presentation, and conclusion drawing. The results of this study show that each surgical method for total hip replacement has different advantages and disadvantages. The choice of surgical approach should be tailored to each patient's specific condition. Based on a review of the available literature, the anterior approach is often considered superior to the other approaches. The advantages include less surgical trauma, better postoperative pain reduction and a faster rehabilitation process. The anterior approach is considered safe, reliable and effective, and results in lower pain levels compared to other methods

Advances in the research of femtosecond laser-assisted lenticule intrastromal keratoplasty for the correction of hyperopia

Lenticule intrastromal keratoplasty (LIKE) was introduced clinically in the 1980s as a refractive surgery. With the advancements of femtosecond laser, LIKE has been significantly revitalized. Currently, femtosecond laser-assisted LIKE has been demonstrated to be a safe and effective surgical procedure to correct hyperopia, but the predictability is still a major limitation. In this article, we review the history, procedures, influencing factors of predictability and challenge of LIKE to provide reference for clinical practice of femtosecond laser-assisted LIKE.

Efficiency of Anatomical Hepatectomy in the Treatment of Hepatic Cystic Echinococcosis.

Introduction: Total cystectomy and hepatectomy are the main radical surgical procedures for hepatic cystic echinococcosis (CE). When CE lesions severely invade intrahepatic biliary ducts and vessels or single or multiple lesions occupy one hepatic lobe, performing total cystectomy is not indicated. This study aimed to analyze the clinical efficiency of anatomical hepatectomy in the treatment of patients with hepatic CE. Methods: Clinical data of 74 patients with hepatic CE who received anatomical hepatectomy were retrospectively analyzed from January 2005 to January 2022. The patients were classified into the intrahepatic biliary duct invasion group (group A), the intrahepatic vessel invasion group (group B), and the hepatic lobe occupation group (group C). Results: Among these 74 patients who received anatomical hepatectomy, right hepatectomy was performed in 20 cases (27.03%), left hepatectomy in 26 cases (35.13%), right posterior lobectomy in nine cases (12.16%), and left lateral sectionectomy in 19 cases (25.68%). Short-term post-operative complications occurred in seven cases (9.50%), including abdominal abscess in one case, pleural effusion in three cases, intestinal obstruction in one case, incision infection in one case, and ascites in one case. Long-term post-operative complications occurred in four cases (5.4%), including recurrences of CE in two cases and incisional hernias in another two cases. There were no statistical differences in the concentrations of total bilirubin, alanine aminotransferase, and aspartic transaminase before and after surgery between groups (p > 0.05). However, differences in operative time, short-term post-operative complications, average hospital stay, and number of open hepatectomy cases were statistically significant between groups (p < 0.05). The differences in cases receiving hepatic portal occlusion, intra-operative blood loss, and intra-operative blood transfusion were not statistically significant between groups (p > 0.05). Conclusions: Anatomical hepatectomy is an effective and feasible surgical procedure for patients with hepatic CE with severe invasion of intrahepatic biliary ducts and vessels or patients with huge lesions occupying one hepatic lobe, which effectively avoids residual cavity-related complications.

Comparative analysis of Roux-en-Y cystojejunostomy versus conservative surgical strategies for giant hepatic hydatid cysts: A retrospective study

BackgroundThis retrospective study addressed the challenge of postoperative biliary fistula, a common complication observed after surgical management of giant hepatic hydatid cysts. The primary objective was to compare the efficacy and safety of conservative surgical techniques versus prophylactic Roux-en-Y cystojejunostomy (R-en-Y CJ) in addressing residual cavity. MethodsRetrospective analysis was conducted on patients who underwent surgical intervention for giant hepatic hydatid cysts with cysto-biliary communication from July 2021 to Jan 2024. Preoperative laboratory tests, imaging studies, surgical procedures, and postoperative outcomes were reviewed from medical records. Results32 patients who underwent surgery for giant hepatic hydatid cysts were included. There were 19 (59.38%) female patients, with a mean age of cohort was 39.13 years. The patients were divided into two groups with respect to the treatment modality: Group A (n = 14), treated with conservative surgical techniques and R-en-Y CJ, and Group B (n = 18), treated with conservative surgical methods. The overall cavity-related complications occurred in 9/18 (50%) in Group B, whereas 2/14 patients (14.29%) in Group A during the follow-up period (p < 0.05). ConclusionR-en-Y CJ is an effective and safe surgical procedure for tackling residual cavities in giant hepatic hydatid cysts with cysto-biliary communication.

Prospectives of developing therapeutic HPV vaccines

Human papillomavirus (HPV) represents one of the most serious global public health problems. Malignant female and male diseases mainly result from persistent HPV infection. Cancer belongs to a high mortality rate disease. It has been established that HPV infection causes about 70% vaginal cancer, 50% male genital cancer, 90% anal cancer and 60% head-and-neck cancer. Annually, a large number of people develop various HPV-caused cancer types, dominated by cervical cancer, one of the most common and aggressive types of cancer that threatens health holding the fourth place among most female common cancer worldwide. According to the World Health Organization (WHO), in 2020, about 600 cases of cervical cancer are recorded daily in different countries. Emergence of cervical cancer is closely related to factors such as long-term (persistent) HPV infection and somatic mutations of the host genome. Although HPV infection can be detected and cured early with highly effective screening methods and surgical procedures, the carcinogenic risk of HPV related diseases constantly increases, which elimination faces certain difficulties, especially in low- and mid-developed countries. The most acceptable solution to this is development and implementation of therapeutic vaccines for prevention and treatment of HPV related diseases. Three licensed HPV vaccines based on L1 type virus-like particles (L1-VLPs) technology are available globally: bivalent (HPV-2), quadrivalent (HPV-4) and nonavalent (HPV-9) vaccines. These vaccines demonstrated effectiveness in reducing HPV-related cervical cancer rate by up to 90% worldwide. However, the therapeutic effect of these vaccines on persistent HPV infection and lesions has not been observed. Therapeutic HPV vaccines candidates targeted Ye6/Ye7 cancer proteins activate cellular immunity that eliminates existing HPV infection. Here we review types, mechanisms of action and clinical effects of therapeutic HPV vaccines, as well as current and future developments in the field for prevention and treatment of HPV related diseases.

Failure mechanisms and influencing factors on orthopaedic knee implant failure – A comprehensive review

Background Total knee replacement (TKR) is an effective orthopaedic surgical procedure to confront osteoarthritis and restore bone joint mobility, relieve pain, and enhance the quality of life. The improvements in implant design and the use of high-wear resistance polyethylene bearings improve the survival of implants. Despite the advancements, the implants still failed and required revision surgery. Also, with an increase in the trend of young patients getting knee replacements, there is a possibility of a higher revision rate. Thus, understanding the failure cause, failure mechanisms and the influencing factors is pertinent. Methods A systematic review of the available literature was performed for different modes of failure. All the observations are collated and found the more predominant failure modes. Also, the data pertaining to the failure mechanisms, and the influencing factors of the failure mechanisms are collected from various literature and provided comprehensively. Results Infection (30%) becomes the primary cause of implant failure followed by loosening (20%) and instability (18%). The types of wear on knee implants are polyethylene wear, backside wear, impingement wear, and corrosive wear. The factors influencing these wear are material processing, shelf age, implant design, surface topography, and activity level. Conclusions Moderately cross-linked, and sequentially processed polyethylene has better wear resistance. Less conformal contact with minimum shelf age provides less wear at articulation and backside. A polished tibial tray with a sophisticated locking mechanism reduces the backside wear of PE, and proper design consideration could reduce impingement wear.

Efficacy and safety of endoscopic subserosal dissection treatment for gastrointetinal submucosal tumors in the upper gastrointestinal tract

ObjectiveTo investigate the safety and efficacy of endoscopic subserosal dissection for patients with submucosal tumors in the upper gastrointestinal tract.MethodsThis retrospective single-center study included 16 patients who underwent ESSD. All patients were enrolled from July 2018 to Dec 2021. Parameters such as demographics, size, resection margin, complications, pathological features, procedure time and follow-up were investigated and analyzed.ResultsOur study achieved 100% en bloc resection and 100% R0 resection. The most common location was the corpus with a mean tumor size of 2.78 ± 1.56 cm. The mean age, procedure time, were 53.4 ± 10.3 years, 85.31 ± 46.64 min respectively. Acocording to National Institutes of Health classification, 7 (13, 53.85%), 5 (13, 38.46%) ,and 1 (13, 7.69%) objects belonged to the very low, low, and intermediate classification, respectively. Immunohistochemistry results showed a 100% positive rate of CD34, DOG-1, CD117, and Ki67. A mean follow-up of 9.3 ± 2.5 months showed no recurrence or metastasis.ConclusionsESSD is effective and safe surgical procedure for curative removal of gastrointestinal submucosal tumors in the upper gastrointestinal tract, and it can be preferred for patients with no metastasis.

Endoscopic Sleeve Gastroplasty for the Treatment of Obesity: A Single-Centre Experience and Literature Review.

In the world, obesity is constantly increasing, and so are the types of medical and surgical therapies. However, to cope with the increase in costs associated with surgical procedures and certain complications, such as gastroesophageal reflux disease, the number of bariatric endoscopic (BE) procedures has been increasing in recent years. Endoscopic sleeve gastroplasty (ESG) is one of the most rapidly increasing BEprocedures, given its benefits in terms of patient quality of life and reduced costs. In fact, it is a procedure characterised by minimal postoperative complications and is applicable to different types of bariatric patients. However, the number of studies on BE is not comparable to that on bariatric surgery. We analyzed the results of 84 ESG performed in our centre and compared them with those presented in the literature. We evaluated 36-Item Short Form Health Survey (SF-36)to 0, six and 13 months, signs and symptoms of patients undergoing ESG on the first and second postoperative day (POD), in terms of abdominal pain, nausea and vomiting. We found a reduction of these outcomes from POD 1 to POD 2. Finally, we measured total body weight loss percentage (TBWL%) and excess weight loss percentage (EWL%) at three, six and 12 months both in patients undergoing bariatric surgery for the first time (specifically, ESG) and in patients previously undergoing bariatric surgery and then undergoing ESG. Using the SF-36 score, we observedan improvement in the physical (mean score from 46.4 at time 0 to 53.6 at 12 months from the ESG) and mental (mean score from 37 at time 0 to 39.9 at 12 months from the ESG) status of the patients.Furthermore, we observed a 0 to 12-month increase in TBWL% and EWL% from the ESG procedure. Furthermore, we observed an increase in TBWL% and EWL% at three, six and 12 months both in patients undergoing bariatric surgery for the first time (specifically ESG) and in patients previously undergoing bariatric surgery and then undergoing ESG. ESG was an effective, reversible, and repeatable surgical procedure for bariatric patients.