Michael J. Rosen

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BACKGROUND Open component separation has a high wound complication rate. Newer endoscopic approaches are described with no comparative trials. METHODS A retrospective review (2005-2009) of patients undergoing open or endoscopic component separation was performed. RESULTS Forty-four cases were identified (22 endoscopic; 22 open). All perioperative(More)
BACKGROUND The lack of a universally accepted classification system for incisional hernia repair has led to inconsistent reporting of ventral hernia repairs, the inability to compare various series, and the lack of appropriate risk adjusted stratification systems to evaluate surgical outcomes. This study evaluates the Ventral Hernia Working Group's (VHWG)(More)
The surgical treatment of large ventral hernias with accompanying contamination is challenging. We have reviewed our institution's experience with single-staged repair of complex ventral hernias in the setting of contamination. We retrospectively reviewed the medical records of all patients who underwent ventral hernia repairs in the setting of a(More)
BACKGROUND The ideal technique for the use of AlloDerm (LifeCell Corp) in complicated ventral hernia repair has not been defined. The expense of these products mandates careful evaluation to justify their widespread use. We compared two techniques of fascial bridging versus fascial reinforcement repair with regard to their longterm recurrence rates using(More)
BACKGROUND Given the questionable long-term durability of biologic meshes, additional prosthetic options for ventral hernia repairs (VHR) in contaminated fields are necessary. Recent evidence suggests improved bacterial resistance of reduced-weight, large-pore synthetics, giving a potential mesh alternative for repair of contaminated hernias. We aimed to(More)
OBJECTIVE Our objective was to evaluate the safety and durability of biologic mesh for single-staged reconstruction of contaminated fields. INTRODUCTION The presence of contamination during ventral hernia repair (VHR) poses a significant challenge. Some advocate for a multistaged reconstructive approach with delayed definitive repair, whereas others(More)
We present the open-source software package DADA2 for modeling and correcting Illumina-sequenced amplicon errors (https://github.com/benjjneb/dada2). DADA2 infers sample sequences exactly and resolves differences of as little as 1 nucleotide. In several mock communities, DADA2 identified more real variants and output fewer spurious sequences than other(More)
BACKGROUND Several modifications of the classic retromuscular Stoppa technique to facilitate dissection beyond the lateral border of the rectus sheath recently were reported. We describe a novel technique of transversus abdominis muscle release (TAR) for posterior component separation during major abdominal wall reconstructions. METHODS Retrospective(More)
Laparoscopic appendectomy (LA) has gained in popularity in recent years. The number of elderly patients undergoing appendectomy has increased as that segment of the population has increased in number; however, the utility and benefits of LA in the elderly population are not well established. We hypothesized that LA in the elderly has distinctive advantages(More)
BACKGROUND Success of a surgical intervention is often measured by hard clinical outcomes. In ventral hernia repair (VHR) these include wound morbidity and hernia recurrence. These outcomes fail to account for a surgical intervention's effect on a patient's quality of life (QofL). Our objective was to design a hernia-specific QofL instrument with a focus on(More)