Publications by authors named "David Feldman"

Article Synopsis
  • The study aimed to analyze how changes in upper lumbar lordosis after spinal fusion affect the alignment of unfused lower lumbar segments in patients with Adolescent Idiopathic Scoliosis.
  • A retrospective review was conducted on 158 patients who underwent posterior spinal fusion, focusing on various spinal measurements and using MATLAB for 3D calculations.
  • Results indicated that increased upper lumbar lordosis influenced the lordotic shape of distal unfused segments, with varying impacts based on the specific levels of fusion, while overall sagittal alignment remained stable.
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Post-traumatic growth (PTG) has been characterized as the subjective appraisal of growth, or personal development, following a confrontation with an array of high-impact challenges in life (Psychol Inq 15:1-18, 2004). Song et al. found that patients with cancer may be described by three profiles with regard to symptom burden and PTG.

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Hereditary sensory and autonomic neuropathies (HSANs) encompass a diverse group of inherited neuropathies characterized by notable sensory and autonomic involvement that affects musculoskeletal structures and systemic function. There are 8 recognized types of HSAN. The orthopaedic manifestations of HSAN are complex and diverse, including spinal deformity, Charcot arthropathy, osteomyelitis, fractures, osteonecrosis, osteoporosis, and skeletal deformities.

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Background: Surgery for knee flexion contractures in patients with arthrogryposis multiplex congenital (AMC) have achieved extension to redirect the arc of motion and improve ambulation but has not demonstrated maintained increases in total range of motion (ROM). This study aimed to review the clinical outcomes of combined posterior knee release, proximal femoral shortening, and nerve decompression in patients with arthrogryposis.

Methods: A retrospective chart and radiographic review were performed on patients with AMC who underwent treatment for knee flexion deformities ≥30 degrees.

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Background: Arthrogryposis multiplex congenita (AMC) encompasses congenital conditions with joint contractures in 2 or more joints. Patients with AMC may have scoliosis and neural axis malformations. The study aimed to determine the prevalence of tethered spinal cord (TSC), characterized by a low-lying conus medullaris, and secondarily, present preliminary findings following surgical untethering in children with AMC.

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Article Synopsis
  • Increased levels of low-density lipoprotein cholesterol (LDL-C) were observed in individuals following ketogenic diets, particularly in those with a specific "lean mass hyper-responder" (LMHR) phenotype.
  • The study aimed to compare coronary plaque burden in LMHR individuals with high LDL-C (≥190 mg/dL) against matched controls from the Miami Heart cohort.
  • Results showed no significant difference in coronary plaque levels between the ketogenic diet group and controls, indicating that high LDL-C does not correlate with increased coronary plaque burden in metabolically healthy individuals.
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  • The term atypical hemolytic uremic syndrome (aHUS) originated in the 1970s to differentiate between familial/sporadic cases and typical epidemic cases associated with Shiga toxin.
  • Over time, aHUS has become a broad term for various diseases that don't relate to Shiga toxin, complicating the definition and treatment strategies due to its diverse causes.
  • A group of experts used a consensus-building method called the Delphi approach to discuss and clarify the terminology and issues surrounding aHUS in light of advancements in medical science and targeted therapies.
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The growth of digital health technology has led to innovative technological solutions that can help to improve patient care. However, the primary focus to date has been on the passive monitoring of patients, which poses difficulties in clinical integration and has not succeeded in optimizing care for chronic conditions. In this article, we highlight the move from a digital care model focused on the passive monitoring of medical conditions to one where holistic patient management is provided by dedicated external health care teams on a longitudinal basis.

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The "International Society for Heart and Lung Transplantation Guidelines for the Evaluation and Care of Cardiac Transplant Candidates-2024" updates and replaces the "Listing Criteria for Heart Transplantation: International Society for Heart and Lung Transplantation Guidelines for the Care of Cardiac Transplant Candidates-2006" and the "2016 International Society for Heart Lung Transplantation Listing Criteria for Heart Transplantation: A 10-year Update." The document aims to provide tools to help integrate the numerous variables involved in evaluating patients for transplantation, emphasizing updating the collaborative treatment while waiting for a transplant. There have been significant practice-changing developments in the care of heart transplant recipients since the publication of the International Society for Heart and Lung Transplantation (ISHLT) guidelines in 2006 and the 10-year update in 2016.

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  • Androgens are linked to causing liver tumors, both benign and malignant, such as hepatocellular adenoma and carcinoma, but the exact mechanisms are still unknown.
  • A case study of a 24-year-old male who developed an androgen-induced hepatocellular adenoma revealed symptoms like severe abdominal pain and a history of testosterone use, leading to significant complications.
  • The diagnosis involved imaging and biopsy, which confirmed atypical liver cells and highlighted the importance of considering androgen-induced liver tumors when diagnosing acute abdominal issues.
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  • * Genetic testing in nephrology is less advanced compared to other medical fields, highlighting the need for better understanding and implementation.
  • * The National Kidney Foundation created a Working Group to develop recommendations for genetic testing and clinical decision-making in kidney diseases, aiming to improve diagnosis and screening through structured guidelines.
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  • - We developed a method to create small proteins that can bind strongly to specific molecules, using advanced deep learning techniques to design their shapes based on repeating structural units.
  • - We test these designs by docking various small molecules into the optimal binding sites and then experimentally validate which designs have the highest binding affinity.
  • - Our successful designs include binders for diverse molecules like methotrexate and thyroxine, and we also used our designs to create systems for chemical dimerization and sensitive nanopore sensors that reassemble when a molecule is added.
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Background: Despite innovations in pharmacotherapy to lower lipoprotein cholesterol and apolipoprotein B, risk factors for atherosclerotic cardiovascular disease (ASCVD), ASCVD persists as the leading global cause of mortality. Elevations in low-density lipoprotein cholesterol (LDL-C) are a well-known risk factor and have been a main target in the treatment of ASCVD. The latest research suggests that ketogenic diets are effective at improving most non-LDL-C/apolipoprotein B cardiometabolic risk factors.

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Randomized clinical trials are underway to evaluate the efficacy of novel agents targeting the alternative complement pathway in patients with C3 glomerulopathy (C3G), a rare glomerular disease. The Kidney Health Initiative convened a panel of experts in C3G to ( 1 ) assess the data supporting the use of the prespecified trial end points as measures of clinical benefit and ( 2 ) opine on efficacy findings they would consider compelling as treatment(s) of C3G in native kidneys. Two subpanels of the C3G Trial Endpoints Work Group reviewed the available evidence and uncertainties for the association between the three prespecified end points-( 1 ) proteinuria, ( 2 ) eGFR, and ( 3 ) histopathology-and anticipated outcomes.

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The U.S. Department of Veterans Affairs is actively transitioning away from a disease-centric model of healthcare to one that prioritizes disease prevention and the promotion of overall health and well-being.

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Background: To our knowledge, there have been no studies examining peroneal nerve decompression and proximal fibular osteochondroma excision exclusively in patients with multiple hereditary exostoses (MHE). The purpose of this study was to evaluate the indications, complications, and recurrence associated with nerve decompression and proximal fibular osteochondroma excision in patients with MHE.

Methods: The records on patients with MHE undergoing peroneal nerve decompression from 2009 to 2023 were retrospectively reviewed.

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Background: Individuals with achondroplasia are prone to symptomatic spinal stenosis requiring surgery. Revision rates are thought to be high; however, the precise causes and rates of reoperation are unknown. The primary aim of this study is to investigate the causes of reoperation after initial surgical intervention in individuals with achondroplasia and spinal stenosis.

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