Publications by authors named "Dan Cohen"

Background: Early physeal-sparing anterior cruciate ligament reconstruction (ACLR) is considered the optimal treatment method in the skeletally immature population to preserve the integrity of the knee joint while reducing the risk of growth disturbances and angular deformities. Contemporary treatment algorithms recommend the use of all-epiphyseal (AE) or Micheli-Kocher (MK) ACLR techniques in patients with considerable growth remaining. Nevertheless, no research exists comparing the 2 techniques.

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The European Clozapine Task Force is a group of psychiatrists and pharmacologists practicing in 18 countries under European Medicines Agency (EMA) regulation, who are deeply concerned about the underuse of clozapine in European countries. Although clozapine is the most effective antipsychotic for people with treatment-resistant schizophrenia, a large proportion of them do not have access to this treatment. Concerns about clozapine-induced agranulocytosis and stringent blood monitoring rules are major barriers to clozapine prescribing and use.

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Objectives: This study aimed to evaluate the accuracy of ChatGPT in answering patient questions about femoroacetabular impingement (FAI) and arthroscopic hip surgery, comparing the performance of versions ChatGPT-3.5 (free) and ChatGPT-4 (paid).

Methods: Twelve frequently asked questions (FAQs) relating to FAI were selected and posed to ChatGPT-3.

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Purpose: This study aims to summarize the graft dimensions, failure rates, return-to-sport rates and patient-reported outcome measures (PROMs) following anterior cruciate ligament reconstruction (ACLR) with six or eight-strand hamstring tendon autografts (6SHG or 8SHG).

Methods: Three databases were searched from inception to 12 February 2024. The authors adhered to PRISMA guidelines and the Cochrane Handbook for Systematic Reviews of Interventions.

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The ability of seeds to restore their amino acid content and composition after the elimination of the most abundant seed storage proteins (SSPs) is well-documented, yet the underlying mechanisms remain unclear. To better understand how seeds compensate for major proteomic disruptions, we conducted a comprehensive analysis on an Arabidopsis mutant lacking the three most abundant SSPs, the cruciferins. Our initial findings indicated that carbon, nitrogen, and sulfur levels, as well as total protein and oil content, remained unchanged in these mutants suggesting rebalanced seeds.

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Article Synopsis
  • The study seeks to determine if early surgical intervention for first-time patellar dislocations in children is more effective than conservative management in reducing redislocation rates.
  • A review of 11 studies involving 761 patients revealed a lower weighted mean redislocation rate of 25.1% for the surgical group compared to 46.4% for the conservative group, with surgery showing a relative risk of redislocation of 0.82.
  • Additionally, a subgroup analysis of recent RCTs indicated even greater effectiveness for surgery, with an RR of 0.53, although Kujala scores showed slight favor towards conservative treatment.
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  • Clozapine, a second-generation antipsychotic, is effective for treatment-resistant schizophrenia and has shown links to epigenetic changes, but previous studies could not separate the effects of diagnosis and medication.
  • This study analyzed DNA methylation in blood samples from 38 patients over six months of clozapine treatment, revealing significant changes in B-cell proportions and identifying 37 to 90 differentially methylated positions (DMPs) related to the medication.
  • The findings suggest that clozapine exposure alters DNA methylation and cellular makeup, raising concerns that medication effects might skew results in studies assessing neuropsychiatric disorders.
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Background: Currently, guidance on the most effective treatment for patients with clozapine-resistant schizophrenia-spectrum disorders (SSD) is lacking. While augmentation strategies to clozapine with aripiprazole and electroconvulsive therapy (ECT) have been demonstrated to be effective in patients with clozapine-resistant schizophrenia spectrum disorders (CRS), head-to-head comparisons between these addition strategies are unavailable. We therefore aim to examine the feasibility of a larger randomized, single-blind trial comparing the effectiveness, cost-effectiveness, and safety of aripiprazole addition vs.

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Clozapine remains the only pharmacological treatment option for treatment-resistant schizophrenia. Therapeutic drug monitoring (TDM) of clozapine is recommended, although evidence for the therapeutic range of 350-600 ng/ml is limited. In various countries including Serbia, TDM of clozapine is not routinely performed.

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Purpose: To review the postoperative outcomes of arthroscopic surgical options in treating irreparable and hypoplastic labrum of the hip.

Methods: Three online databases (PubMed, MEDLINE, and EMBASE) were searched from database inception to June 27, 2023 to identify literature on treatment strategies for hypoplastic/irreparable acetabular labrum. Data pertaining to classification of irreparable tears or labral hypoplasia, indication for surgery, description of treatment, radiographic findings, and clinical outcomes were recorded and described.

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Article Synopsis
  • The study investigates the effectiveness and cost differences between lateral extra-articular tenodesis (LET) and anterolateral ligament reconstruction (ALLR) during primary ACL reconstruction, aiming to find out which method is more cost-effective and has lower graft failure rates.* -
  • A systematic review included data from 22 studies on 2505 knees, showing similar ACL graft failure rates (2.9% for LET vs. 3.2% for ALLR) and slightly higher quality-adjusted life years (QALYs) for LET compared to ALLR.* -
  • Cost estimates revealed LET is less expensive at $1,015 compared to autograft ALLR ($1,295) and allograft
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For decades investors have sought to find ways of profiting off the billions of public dollars spent annually on systems of public schooling across the world. This interest has coincided with the growing marketization of systems of public schooling, especially in the United States, as well as the increased use of educational technologies (or EdTech). This study examines the implications of the growing use of profit-driven educational technologies for the politics and spatial practices of schooling.

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Articular cartilage lesions of the acetabulum may result in significant pain and dysfunction for patients with treatment options consisting of either microfracture or various forms of cartilage restoration procedures. A systematic review of 529 patients demonstrated similar, if not lower, reoperation rates and patient-reported outcomes in patients receiving cartilage restoration procedures compared with microfracture. The primary outcomes examined in this review were reoperation rates and patient-reported outcomes with no clear mention of radiographic outcomes and no clearly defined indications as to who would benefit from a cartilage-based procedure.

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Article Synopsis
  • "Walking the Talk for Dementia" is an immersive initiative designed to empower individuals affected by dementia and improve overall understanding of the condition through a collective experience.
  • The program included a 4-day, 40 km walk with 300 participants from diverse backgrounds, followed by a symposium aimed at fostering collaborative discussions and breaking down traditional power structures in dementia care.
  • This innovative approach highlights the importance of combining physical activities with knowledge sharing to enhance empathy, reduce stigma, and improve dementia care and research on a larger scale.
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Purpose: To determine bony knee morphological factors associated with primary posterior cruciate ligament (PCL) rupture or PCL graft failure after PCL reconstruction.

Methods: Three databases, namely MEDLINE, PubMed and EMBASE, were searched on 30th May 2023. The authors adhered to the PRISMA and R-AMSTAR guidelines as well as the Cochrane Handbook for Systematic Reviews of Interventions.

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The ligamentum teres (LT) is known to play a role as a secondary stabilizer of the hip joint. LT tears can be associated with hip instability. In patients with borderline developmental dysplasia of the hip (BDDH), the correlation between LT tears and microinstability is even more pronounced because of the increased mechanical stress placed on the ligament.

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Context: Femoroacetabular impingement syndrome (FAIS) is a common cause of hip pain in young adults. Flexibility athletes represent an interesting subset due to the extreme range of motion requirements of their sport.

Objective: The objective of this review was to provide a summary of the outcomes of hip arthroscopy for FAIS in patients who participate in flexibility sports.

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Family Constellations are an emerging therapeutic approach for working with local and non-local consciousness. First developed by German psychoanalyst Bert Hellinger, and now practiced by thousands of licensed and un-licensed facilitators globally, Family Constellations are a transpersonal and systemically oriented therapeutic process. Their aim is to address a focus client's emotional, behavioral, relational, or somatic issues by uncovering and resolving transgenerational entanglements within their family system.

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Purpose: The aim of this systematic review and meta-analysis was to evaluate whether Enhanced Recovery After Surgery (ERAS) protocols for patients undergoing emergency intra-abdominal surgery improve postoperative outcomes as compared to conventional care.

Methods: MEDLINE, EMBASE, WoS, CENTRAL, and Pubmed were searched from inception to December 2022. Articles were eligible if they were randomized controlled trials (RCT) or non-randomized studies comparing ERAS protocols to conventional care for patients undergoing emergency intra-abdominal surgery.

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After the introduction of clozapine eight Finnish patients died after developing agranulocytosis. Clozapine was withdrawn from the market and only reintroduced with strict mandatory white blood cell monitoring as long as treatment lasts and thresholds at which clozapine must be discontinued definitively. The fear of agranulocytosis and the need for intensive blood monitoring is the single most important barrier for prescribers and patients alike and leads to underprescription of the only effective and approved medication for treatment-resistant schizophrenia.

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Background: There are few if any life-span population-based studies of psychiatric disorder-associated biomedical and biophysical disorders and diseases (morbidity).

Aim: To scope the present state of research regarding the biomedical and biophysical morbidity associated with affective and mental disorder in epidemiological samples, and to examine the life-span relationship between affective disorders and biomedical/biophysical disorders to illustrate a novel approach employing the odds ratio to represent the intensity of biomedical and biophysical morbidity associated in time in a population.

Methods: A repeatable systematic literature search of PubMed was represented in summary.

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Purpose: To compare graft dimensions, functional outcomes, and failure rates following anterior cruciate ligament reconstruction (ACLR) with either five-strand or four-strand hamstring autograft options.

Methods: Three databases (MEDLINE, PubMed, and EMBASE) were searched from inception to 22 April 2023 for level I and II studies comparing five- and four-strand hamstring autografts in ACLR. The authors adhered to the PRISMA and R-AMSTAR guidelines as well as the Cochrane Handbook for Systematic Reviews of Interventions.

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