Publications by authors named "John Zeller"

The electrical impedance characteristics of multi-walled carbon nanotube (MWCNTs) networks were studied as a function of CNT concentrations in the frequency range of 1 kHz-1 MHz. The novelty of this study is that the MWCNTs were not embedded in any polymer matrix and so the response of the device to electrical measurements are attributed to the CNTs in the network without any contribution from a polymer host matrix. Devices with low MWCNT packing density (0.

View Article and Find Full Text PDF

In this work, we use contrast image processing to estimate the concentration of multi-wall carbon nanotubes (MWCNT) in a given network. The fractal dimension factor (D) of the CNT network that provides an estimate of its geometrical complexity, is determined and correlated to network resistance. Six fabricated devices with different CNT concentrations exhibit D factors ranging from 1.

View Article and Find Full Text PDF

According to the Lancet Commission Report on Global Surgery, it was estimated that in 2010 about 16.9 million lives were lost due to the unavailability of Surgical services. It was further calculated that 77.

View Article and Find Full Text PDF

Stakeholder-centered approaches, that restrict patient barriers to clinical community mental health research, affect outcomes. It is suggested that a restructuring of clinical research organizational behavior and attitudes may overcome this problem. It is further advocated that consultation with an engagement of study patient stakeholders encourages their interest in the study, and is essential for successful research.

View Article and Find Full Text PDF

Background Context: The Accreditation Council for Graduate Medical Education (ACGME) guidelines requires residency programs to teach and evaluate residents in six overarching "core competencies" and document progress through educational milestones. To assess the progress of orthopedic interns' skills in performing a history, physical examination, and documentation of the encounter for a standardized patient with spinal stenosis, an objective structured clinical examination (OSCE) was conducted for 13 orthopedic intern residents, following a 1-month boot camp that included communications skills and curriculum in history and physical examination. Interns were objectively scored based on their performance of the physical examination, communication skills, completeness and accuracy of their electronic medical record (EMR), and their diagnostic conclusions gleaned from the patient encounter.

View Article and Find Full Text PDF

Background: Medical students have difficulty performing and interpreting musculoskeletal physical examinations and interpreting the findings. Research has focused on students' knowledge deficits, but there are few direct assessments of students' ability to perform a hypothesis-driven physical examination (HDPE). We developed a novel musculoskeletal Objective Structured Clinical Exam (OSCE) focusing on HDPE skills for disorders of the shoulder, back and knee, and used it to explore medical student diagnostic reasoning.

View Article and Find Full Text PDF

Purpose: A strong foundation in anatomical knowledge is essential for physicians in all fields. Despite this established importance, anatomy continues to be primarily taught only during the pre-clinical years of medical school. Senior medical students have more mature clinical reasoning and analytical skills; therefore, advanced anatomy courses have great potential to integrate basic and clinical sciences to better prepare senior medical students for residency.

View Article and Find Full Text PDF

Triple neurectomy of the iliohypogastric (IHN), ilioinguinal (IIN), and genitofemoral (GFN) nerves is an available treatment option for chronic groin pain when conservative measures are ineffective. This research study attempted to define the variability of IHN, IIN, and GFN by categorizing variation and establishing a relationship to clinically significant landmarks. 22 cadavers (43 specimens) were dissected.

View Article and Find Full Text PDF

Ankle arthroscopic procedures offer less postoperative morbidity with faster healing times than open surgical procedures but still have associated risks. Complication rates as high as 17% have been reported. One of the most commonly reported complications is iatrogenic damage to the superficial peroneal nerve, which can result in numbness, tingling, or painful neuralgia.

View Article and Find Full Text PDF

Importance: There is growing interest in the use of health care resources by critical access hospitals (CAHs), key providers of medical care for many rural populations.

Objective: To evaluate discharge practice patterns and use of post-acute care after surgical admissions at CAHs.

Design, Setting, And Participants: We used data from the Nationwide Inpatient Sample (2005-2009) and American Hospital Association to perform a retrospective cohort study of patients undergoing common inpatient surgical procedures at CAHs or non-CAHs.

View Article and Find Full Text PDF

Purpose: Given the severity and incidence of injury to the common fibular (peroneal) nerve (CFN), there is a need to further clarify its anatomical location and branching patterns. This project attempts to consolidate current anatomical understanding of this nerve and provide physicians with reproducible measurements regarding the CFN and its branches.

Methods: Dissections were performed on 50 specimens (28 cadavers), both fresh and preserved.

View Article and Find Full Text PDF

Purpose: The anatomical arrangement of the thumb pulley system continues to be revised through ongoing investigative research, changing our previous assumptions. This study demonstrates the components and anatomical features of this pulley system in an effort to improve surgical outcomes and to clarify current misconceptions.

Methods: Researchers procured 75 hand specimens from 41 adult cadavers through our institution's anatomical donations program.

View Article and Find Full Text PDF

A dedicated automatic target recognition and tracking optical correlator (OC) system using advanced processing technology has been developed. Rapidly cycling data-cubes with size, shape, and orientation are employed with software algorithms to isolate correlation peaks and enable tracking of targets in maritime environments with future track prediction. The method has been found superior to employing maximum average correlation height filters for which the correlation peak intensity drops off in proportion to the number of training images.

View Article and Find Full Text PDF

Despite the prevalence of musculoskeletal disorders in the United States, physicians have received inadequate training during medical school on how to examine, diagnose, and manage these conditions. This article provides an overview of the existing literature on undergraduate medical musculoskeletal education, including learning objectives, researched methodology, and currently utilized assessment tools. A discussion of challenges to and suggested approaches for the implementation of medical school musculoskeletal curricula is presented.

View Article and Find Full Text PDF

Acromioclavicular joint (ACJ) cysts are an uncommon and unusual sequela associated with shoulder pathophysiology. The majority of literature on ACJ cysts consists of individual case reports with no definitive literature review currently available. In addition to a comprehensive literature review, four clinical cases are presented in this report.

View Article and Find Full Text PDF