The sandwich omental flap for abdominal wall defect reconstruction

Innovations for an Aging Society through the Lens of Patent Data

BACKGROUND AND OBJECTIVES

An aging population creates fertile ground for devising innovations for older adults. By using patents as a proxy for inventive activity, this study sets the stage for understanding the latest innovations being designed for the older population. Insights will pave the way for a better understanding of inventions that could render society more age-friendly on the innovation front.

RESEARCH DESIGN AND METHODS

To identify the latest innovations targeted at the older population, we collected all patents (N = 326) issued in 2021, specifically those issued between January 5th and December 28th. Upon removing irrelevant data, 120 patents were retained in the data set. Both inductive and deductive modes of reasoning informed our content analysis of the data.

RESULTS

Three themes surfaced. About half (49.2%) of the patents focused on "Preventive Health, Safety, and Independence" (Theme 1). About 38.3% pertained to "Anti-Aging" (Theme 2) and 12.5% were about the "Pathologization of Old Age" (Theme 3).

DISCUSSION AND IMPLICATIONS

This is the first study that evaluates the state of innovations for an aging population. While there are inventions aimed at optimizing the well-being of older adults, there are also those designed due to beliefs that see old age as a problem to solve. As the world experiences a demographic shift, it is imperative that collective ingenuity be harnessed to build a society conducive to all facets of the aging experience.

Age Advocacy on Twitter Over 12 Years

BACKGROUND AND OBJECTIVES

Discussions on age-related issues have begun taking place in earnest, but exactly what dominates public consciousness about these issues is a topic that has yet to kindle scholarly attention. This study analyzes tweets uploaded by age advocacy organizations that have attracted the highest levels of engagement on Twitter.

RESEARCH DESIGN AND METHODS

We collected 403,426 tweets from 53 accounts. These tweets were posted over 12 years, from 2009 to 2021. After applying our exclusion criteria and collating the top 1% of tweets with the highest levels of engagement, 2,054 tweets were retained for analysis. Both inductive and deductive approaches informed our qualitative content analysis.

RESULTS

Five themes emerged. "Issues Related to Alzheimer's Disease or Dementia" (Theme 1) formed the majority of tweets (62%; N = 1,278). Theme 2 "Rising Health Care or Retirement Costs" was the second largest theme (25%; N = 506). Seven percent of the tweets were on "Reframing Aging and Combating Ageism" (Theme 3; N = 138). "Matters Affecting Caregivers" surfaced in Theme 4 (4%; N = 81). Two percent of the tweets were on "Intersectional Concerns" (Theme 5; N = 51).

DISCUSSION AND IMPLICATIONS

As age advocacy organizations step up to engage the public constructively in matters regarding later life, there is a compelling need to quell public anxiety about old age and to sensitize society to the struggles confronted by older adults. In undertaking the range of activities needed to do so, age advocacy organizations should consolidate efforts even as they rethink existing strategies to effectuate change.

Videos about older adults on TikTok

Besides being one of the fastest growing platforms since entering the social media fray in 2016, TikTok is notably monopolized by teenagers, which makes it a veritable source of information not to be overlooked by gerontologists. Currently, most studies regarding age stereotypes on social media have examined content on Twitter and Facebook. Our study explores how older adults are portrayed on TikTok and the factors associated with these portrayals. We analyzed 673 videos with the hashtags #Boomer and/or #OkBoomer that received over 5.4 billion views and categorized them into nine topics. Five of these topics (e.g., 'Warmth/Coldness') were extracted from previous studies on age stereotypes. The remaining four topics were unique to our dataset (e.g., 'Wealth Gap'). The outcome variable was 'Negative Age Stereotypes' which was rated on a binary scale. One in two videos about older adults featured negative content. As hypothesized, videos containing negative age stereotypes were more likely to be about the 'Values and Beliefs of Older Adults' (7 times), 'Negative Encounters with Older Adults' (8 times) or 'Older Adults Antagonizing the Young' (13 times). Conversely, videos which portrayed older adults as 'Warm' were 43% less likely to contain negative stereotypes. As the phenomenon of an aging population fast unfolds, it is imperative that society relinquishes its tendency to stereotype individuals on the grounds of age. By examining the possible mechanisms driving negative stereotypes of older adults on TikTok, our study provides the basis upon which such stereotypes can be counteracted. In doing so, it paves the way both to improve the well-being of older persons and to foster intergenerational solidarity.

Pediatric patient with a complex Abdominal Wall defect reconstructed with sandwich omental flap. A case report

INTRODUCTION AND IMPORTANCE

Low grade Fibromyxoid sarcoma (LGFMS) is a rare soft tissue sarcoma. LGFMS has an indolent clinical behavior but it is prone for late local recurrence and metastasis. In children it is commonly seen in the subcutaneous tissues relative to adults where it presents in deep soft tissues. These patients are best managed in a specialized unit with a multidisciplinary team. For patients with sarcoma, wide local excision remains the treatment of choice. Large complex abdominal wall defects present a unique reconstructive challenge to the surgeon following tumor removal.

CASE PRESENTATION

Here, we present a case of a 9-year old pediatric male patient with complex abdominal wall defect post excision of a recurrent fibromyxoid sarcoma, reconstructed with a sandwich omental flap, monofilament polypropylene mesh (Bard® Mesh) and split-thickness skin graft (STSG).

CLINICAL DISCUSSION

Despite the success of covering the defect, the patient still had quite a bit of morbidity with the following:abdominal hernia defect and tumor recurrence. Our case demonstrates the diagnostic and therapeutic challenges in management of sarcomas hence the need for these patients to be managed through a multidisciplinary approach.

CONCLUSION

The omental flap is quite versatile, and knowing how to raise it does not require sophisticated microsurgical skills. It adds to the reconstructive surgeon's armamentarium, especially in resource-limited settings.

Incisions and reconstruction approaches for large sarcomas

Large intraabdominal, retroperitoneal, and abdominal wall sarcomas provide unique challenges in treatment due to their variable histology, potential considerable size at the time of diagnosis, and the ability to invade into critical structures. Historically, some of these tumors were considered inoperable if surgical access was limited or the consequential defect was unable to be closed primarily as reconstructive options were limited. Over time, there has been a greater understanding of the abdominal wall anatomy and mechanics, which has resulted in the development of new techniques to allow for sound oncologic resections and viable, durable options for abdominal wall reconstruction. Currently, intra-operative positioning and employment of a variety of abdominal and posterior trunk incisions have made more intraabdominal and retroperitoneal tumors accessible. Primary involvement or direct invasion of tumor into the abdominal wall is no longer prohibitive as utilization of advanced hernia repair techniques along with the application of vascularized tissue transfer have been shown to have the ability to repair large area defects involving multiple quadrants of the abdominal wall. Both local and distant free tissue transfer may be incorporated, depending on the size and location of the area needing reconstruction and what residual structures are remaining surrounding the resection bed. There is an emphasis on selecting the techniques that will be associated with the least amount of morbidity yet will restore and provide the appropriate structure and function necessary for the trunk. This review article summarizes both initial surgical incisional planning for the oncologic resection and a variety of repair options for the abdominal wall spanning the reconstructive ladder.

Pedicled omental and split skin graft in the reconstruction of the anterior abdominal wall

INTRODUCTION

The POSSG is a pedicled graft based on either the right or left gastro-epiploic arteries. It is used with a dual mesh in reconstruction of full thickness defects of anterior abdominal wall and covered by skin grafts.

PRESENTATION OF CASE

A recurrent malignant peripheral nerve sheath tumor (MPNST) of the anterior abdominal wall was excised leaving a large defect. The POSSG was used for reconstruction. A large dual mesh was placed to close the defect in the abdominal wall by suturing it to the remnant rim of abdominal muscles. The omental pedicle was brought through a keyhole in the mesh, spread out over the mesh, sutured and covered by split skin grafts. The final graft take was 90 percent.

DISCUSSION

The POSSG can be used to reconstruct any size of anterior abdominal wall defects due to the malleable nature of omentum. Its prerequisite however is a dual mesh like PROCEED. The POSSG helps keep the more complex musculofasciocutaneous flaps as lifeboats. It can be used singly where multiple musculofasciocutaneous flaps would otherwise have been required. It can be used in patients with poor prognosis of underlying malignancy. It may be used by general surgeons due to familiarity with anatomy of the relevant structures and lack of need for microsurgical skill.

CONCLUSION

The POSSG can be used in reconstruction of abdominal wall defects of any size by general surgeons.

Radical tumor excision and immediate abdominal wall reconstruction in patients with aggressive neoplasm compromised full-thickness lower abdominal wall

BACKGROUND

Radical tumor resection and immediate lower abdominal wall reconstruction in patients with aggressive neoplasm invading full-thickness abdominal wall are challenging because of their close proximity and possible invasion to bone and great vessels, as well as consequent giant defect.

METHODS

Data on 16 patients were reviewed retrospectively. Radical neoplasm resection and immediate abdominal wall reconstruction using the combined technique of intraperitoneal mesh placement, sublay technique, pedicled great omentum flap, and rotation skin graft were performed.

RESULTS

Sixteen patients underwent radical abdominal wall neoplasm resection, achieving clear margin of >3 cm. The mean size of consequent giant defect was 226.5 ± 65.5 cm(2), with a mean polypropylene mesh size of 160.7 ± 40.5 cm(2) and a mean compound mesh size of 330.8 ± 100.2 cm(2). Sixteen patients had a mean follow-up duration of 32.5 ± 12.5 months. Four patients developed incisional infections, and 1 patient died of several metastatic lesions 24 months postoperatively. No ventral hernia and abdominal wall recurrence were observed.

CONCLUSIONS

Radical neoplasm resection and immediate abdominal wall reconstruction are appropriate for patients with aggressive neoplasm in the lower abdominal wall.

Pedicled omental split skin graft: A novel method for reconstruction of full-thickness abdominal wall defect

Although rare in children, aggressive fibromatosis or desmoid tumors require wide surgical excision for durable relief. The resultant defect poses many challenges for reconstruction. The authors report reconstruction of such a wound using a pedicled omental split skin graft, which resulted from the excision of a locally recurrent desmoid tumor.

Immediate repair of major abdominal wall defect after extensive tumor excision in patients with abdominal wall neoplasm: a retrospective review of 27 cases [corrected]

BACKGROUND

The treatment of abdominal wall neoplasm continues to present a challenging problem because it is not easy to repair the giant defect which is resulted from extensive tumor excision. Some techniques and materials have been reported, but most report a certain technique or material for abdominal wall reconstruction. Therefore, we retrospectively reviewed the treatment of such patients in our department and assessed the reconstruction algorithm in such a situation.

METHODS

We studied 27 patients undergoing immediate abdominal wall reconstruction between 1999 and 2008 who sought care for major defects after extensive tumor excision of malignancy. We categorized the defects into three types: type I, defects involving only the loss of skin (15 cases); type II, myofascial defects with intact skin coverage (6 cases); and type III, myofascial defects without skin coverage (6 cases). Different techniques and materials were used. Postoperative morbidities, sign of herniation, and other follow-up data were recorded.

RESULTS

The immediate abdominal wall reconstruction was successful in all patients. There was no severe morbidity after the operation. Only one patient developed hernia.

CONCLUSIONS

Most type I defects can be corrected with primary suture. For type II defects, a prosthetic or biological mesh, or alternatively an autologous fascial substitute, may be used. For type III defects, the resulting full-thickness defect will require a myocutaneous flap, such as the tensor fascia lata flap, with or without a mesh for abdominal wall reconstruction. Human acellular dermal matrix, a biological mesh, is an ideal alternative for synthetic mesh, especially in situations of infection or contamination.

Reconstruction of the abdominal wall by using a combination of the human acellular dermal matrix implant and an interpositional omentum flap after extensive tumor resection in patients with abdominal wall neoplasm: A preliminary result

AIM: To present our trial using a combination of the human acellular dermal matrix (HADM) implant and an interpositional omentum flap to repair giant abdominal wall defects after extensive tumor resection.

METHODS: Between February and October of 2007, three patients with giant defects of the abdominal wall after extensive tumor resection underwent reconstruction with a combination of HADM and omentum flap. Postoperative morbidities and signs of herniation were monitored.

RESULTS: The abdominal wall reconstruction was successful in these three patients, there was no severe morbidity and no signs of herniation in the follow-up period.

CONCLUSION: The combination of HADM and omentum flap offers a new, safe and effective alternative to traditional forms in the repair of giant abdominal wall defects. Further analysis of the long-term outcome and more cases are needed to assess the reliability of this technique.

An alternative classification of incisional hernias enlisting morphology, body type and risk factors in the assessment of prognosis and tailoring of surgical technique

Incisional hernias occur in 5-10% of patients who have undergone laparotomy and are associated with a high morbidity and significant socioeconomic costs. Better understanding of the anatomy and improved methods for reinforcement of the abdominal wall with alloplastic meshes have reduced the recurrence rate to 1-10% depending on the type of hernia and the technique employed. A number of surgical repair techniques and mesh types are available. However, precise criteria for incorporating patient body type, risk factors for recurrence, hernia morphology, and the available biomaterials into planning of the surgical approach (open versus laparoscopic) have yet to be established. The elaboration of such criteria would require comparative evaluation of long-term results in a sufficiently large number of patients, e.g. in multicentre trials or meta-analyses of standardised data from different centres. Current classifications have the drawback that they fail to take account of prognostically relevant risk factors for recurrence and are not self-explanatory. The authors present a classification of incisional hernias that is self-explanatory and practicable in routine clinical practice. Based on the cornerstones of morphology (M), hernia size in cm (S), and risk factors for recurrence (RF), the scheme enables easy description and documentation of the hernia, and provides evidence for the indications and limitations of the main surgical repair techniques. Since randomised studies can scarcely be conducted on incisional hernias due to the numerous morphological variables, the classification presented here may offer an alternative means for comparative data analysis.

The omentum-polypropylene sandwich technique: an attractive method to repair large abdominal-wall defects in the presence of contamination or infection

BACKGROUND

Repair of abdominal wall defects in the presence of contamination or infection continues to be a significant problem for surgeons. The loss of tissue warrants reinforcement of the abdominal wall, preferably by autologous material. However, autologous repair often requires extensive operations that carry a high morbidity. Moreover, the lack of sufficient fascia may be so extensive that insertion of a prosthetic material is inevitable. Polypropylene (PP) is the most appropriate material to use under these circumstances, but without coverage, the mesh will wrinkle and ultimately be extruded. The present report describes an alternative technique for repair of heavily contaminated abdominal-wall defects.

PATIENTS

Two patients with a very large heavily contaminated abdominal wall defect due to necrotizing fasciitis in one patient and a lion's bite in the other were treated with the omental sandwich technique. After radical debridement, resulting in a full thickness loss of the abdominal wall, the peritoneum was restored using absorbable polyglactin mesh. The fascial defect was bridged with a PP mesh that was fixed to the adjacent myoaponeurosis and covered with a pedicled omental flap. In both patients the omentum was covered with a split skin.

RESULTS

Wound healing in both patients was without complications. Both patients had a sufficient abdominal wall, without signs of herniation after a follow up of 4 and 30 months, respectively.

CONCLUSION

The omental sandwich technique is an attractive method to repair large abdominal wall defects in the presence of contamination or overt infection.