Catalogue Search | MBRL
Search Results Heading
Explore the vast range of titles available.
MBRLSearchResults
-
DisciplineDiscipline
-
Is Peer ReviewedIs Peer Reviewed
-
Item TypeItem Type
-
SubjectSubject
-
YearFrom:-To:
-
More FiltersMore FiltersSourceLanguage
Done
Filters
Reset
274
result(s) for
"Matthews, Jon"
Sort by:
Reconstruction of the medial patellofemoral ligament using a longitudinal patellar tunnel technique
by
Schranz, Peter
,
Matthews, Jon J.
in
Adolescent
,
Adult
,
Bone-Patellar Tendon-Bone Grafting - methods
2010
Patellar instability is a common clinical problem affecting a young, active population. A large number of procedures have been described to treat patellar instability. We present the clinical results in a case series of 25 medial patellofemoral ligament reconstructions in 21 patients with up to 30 months follow-up (mean: 7.3). Reconstruction was performed using either the gracilis or semitendinosus tendon autograft. The Tegner activity score improved overall from 3 to 4.4 at follow-up and the mean follow-up Kujala score was 87 (range: 55–100). No patella redislocations were observed. Five patients (20%) required a manipulation under anaesthetic but subsequently regained a satisfactory range of motion. Medial patellofemoral reconstruction with both gracilis and semitendinosus tendon graft using a longitudinal tunnel technique provided good post-operative stability restoring the primary soft tissue restraint to pathological lateral patellar displacement with no complications of post-operative patellar fracture.
Journal Article
Modular endoprosthetic replacement for failed internal fixation of the proximal femur following trauma
by
Gibbons, Christopher M. L. H.
,
Stubbs, David
,
Matthews, Jon J.
in
Aged
,
Antibiotics
,
Arthroplasty, Replacement, Hip - methods
2012
Purpose
Although originally designed for reconstruction after primary malignant bone tumour resection, modular endoprosthetic replacement (EPR) can be used in salvage surgery for complex periprosthetic fracture and failed internal fixation. The purpose of this study was to assess the functional outcome following EPR for failed internal fixation of the proximal femur.
Methods
We assessed clinical and functional outcomes of using a modular tumour endoprosthesis to reconstruct the proximal femur following failed internal fixation in eight consecutive patients between 2001 and 2008.
Results
There were four men and four women, with a mean age of 67.5 (range 50–79) years and a mean follow-up of 16.5 (6–36) months. All patients had failed internal fixation for traumatic proximal femoral fractures—four 31.A2.3, two 31.A3.1, two 31.A3.3 using the Arbeitsgemeinshaft für Osteosynthesefragen (AO) fracture classification. Mean time from the first attempted internal fixation to definitive EPR was 34 (6–102) months, and the median number of previous surgical procedures was two (1–11). Histology revealed infection (two cases), uninfected nonunion (five cases) and plasmocytoma (one case). The EPR was carried out as a one-stage procedure in six cases and a two-stage procedure in two cases. Mean postoperative Harris Hip Score was 71.4 (range 64–85). There were no surgical complications. One patient died as a result of systemic complications of myeloma several years following EPR.
Conclusions
EPR is an effective salvage procedure for failed fixation of traumatic proximal femoral fractures. Immediate weightbearing and a good functional outcome can be expected in this difficult group of patients.
Journal Article
Protocol of the Healthy Brain Study: An accessible resource for understanding the human brain and how it dynamically and individually operates in its bio-social context
by
de Lange, Floris
,
Cillessen, Toon
,
Idesis, Sebastian
in
Accessibility
,
Adult
,
Affect - physiology
2021
The endeavor to understand the human brain has seen more progress in the last few decades than in the previous two millennia. Still, our understanding of how the human brain relates to behavior in the real world and how this link is modulated by biological, social, and environmental factors is limited. To address this, we designed the Healthy Brain Study (HBS), an interdisciplinary, longitudinal, cohort study based on multidimensional, dynamic assessments in both the laboratory and the real world. Here, we describe the rationale and design of the currently ongoing HBS. The HBS is examining a population-based sample of 1,000 healthy participants (age 30–39) who are thoroughly studied across an entire year. Data are collected through cognitive, affective, behavioral, and physiological testing, neuroimaging, bio-sampling, questionnaires, ecological momentary assessment, and real-world assessments using wearable devices. These data will become an accessible resource for the scientific community enabling the next step in understanding the human brain and how it dynamically and individually operates in its bio-social context. An access procedure to the collected data and bio-samples is in place and published on https://www.healthybrainstudy.nl/en/data-and-methods/access . Trail registration: https://www.trialregister.nl/trial/7955 .
Journal Article
Correction: Protocol of the Healthy Brain Study: An accessible resource for understanding the human brain and how it dynamically and individually operates in its bio-social context
2022
[This corrects the article DOI: 10.1371/journal.pone.0260952.].
Journal Article
Impact of Embedded Advisors on High School Student Participation in Dual Enrollment Courses
2017
Dual enrollment has emerged as an effective means of encouraging postsecondary college participation and acculturating high school students to the academic rigors and expectations of the college environment. In most states, dual enrollment participation is voluntary. To encourage more students to take advantage of dual enrollment opportunities, some states and institutions have initiated programs to increase student interest and engagement. This study sought to evaluate a specialized program implemented by Central Carolina Community College in which academic advisors employed full-time by the College were embedded in local high schools with the specific purpose of boosting participation in dual enrollment courses. Quantitative methods were employed to assess the statistical significance of the presence of embedded advisors on dual enrollment participation rates. Qualitative methods involving text segment encoding were used to analyze participant responses to an institutional survey in order to identify dominant themes reflective of advisor practices, behaviors, and actions that students indicated were influential in their decision to engage in dual enrollment courses and helpful in their college course taking experiences. Quantitative findings showed strong statistical significance in the presence of the embedded advisors related to dual enrollment participation at specific high schools. Qualitative analyses suggested that advisor actions related to the themes of accessibility, advising, and coaching were most frequently cited by survey respondents as being helpful to student participants in dual enrollment courses. Overall, the findings provide both college and secondary school leaders with a potential blueprint for creating and implementing an embedded college advisor program for the purposes of increasing student participation in dual enrollment courses and encouraging progress toward degree completion.
Dissertation
Behavior of bridge piers with ductile fiber reinforced hinge regions and vertical, unbonded post -tensioning
2004
This thesis reports the findings of an experimental study of the behavior of an innovative new bridge pier system. The piers employ a modern construction technique using precast segments joined with vertical, unbonded post-tensioning (UBPT) strands to attain the construction benefits of precasting. The system also uses a newly developed, highly ductile fiber reinforced cementitious composite (DFRCC) in potential hinge regions to achieve improved structural behavior under cyclic lateral loads. This pier system was designed with the goal of achieving some hysteretic energy dissipation and ensuring ductility in an unbonded system while maintaining the advantage of small residual deformations. The scope of the thesis covers two individual but related investigations. The first examined creep, shrinkage and permeability of DFRCC materials, and the second covered the testing of the prototype pier structures. The goal of the study as a whole is to evaluate critically the structural performance of the pier system described herein under cyclic lateral loads with an eye to eventual implementation into structural design practice. The experimental investigation of the time-dependent deformations of DFRCC found that these materials exhibited significantly greater magnitudes of creep than identical materials without fibers. The differing cracking behavior of the DFRCC relative to unreinforced materials was found to play an important role in the time-dependent deformation as well. The testing of prototype piers demonstrated the intended small residual deformations and hysteretic energy dissipation but also limited ductility. Ductility and lateral load capacity were found to be highly dependent upon the behavior and location of match-cast construction joints. The DFRCC at hinge regions allowed much less sudden strength loss after achieving lateral load capacity and resulted in less stiffness degradation than did concrete hinge regions. With alternate detailing it appears likely that the performance of the system could be improved considerably in terms of lateral load capacity, ductility, energy dissipation, and ease of repair. The results are encouraging for eventual implementation of this pier system in seismic zones.
Dissertation
HILLBILLY CHIC FROM NY TO LA
2014
After 30 years of living inWest Virginia, I packed up and moved away, for work. In the past six years, Ive lived in Connecticut, New York City, and Los Angeles where I currently live. When I moved, I knew Id miss West Virginia culture. I wouldnt find moonshine or cornbread in uber hip Brooklyn. Or a rack of antlers hanging in a Hollywood bar. I wouldnt find L.A. hipsters wearing Carhartt shirts, blaze orange, or camo hats. No, those are things you only find in places like West Virginia. Right? Wrong. Hillbilly Chic is one of the hottest trends around. Some of the hippest bars in Brooklyn play country music and have antlers on the wall. These bars are inhabited by hipsters that look like theyre ready for hunting season. And what are they drinking? Moonshine! And its made in Brooklyn of all places! Its great thatWest Virginia cities have martini bars and ethnic food. But no ones going to travel to West Virginia to have a Manhattan or eat sushi. Theyre going to come toWest Virginia to get an experience that they cant get anywhere else.
Newspaper Article
QSC KS112 & KS212C Powered Subwoofers
2018
Both the KS 112 and KS212C are tricked out with sturdy-looking \"silent\" heavy duty casters, a welcome and useful feature, along with some chunky slip-resistant rubber feet on both the bottom and side and matching feet cups built into the cabi net to allow for stable stacking. Note that these output connections provide the same signal as the inputs and are not passed through a crossover In the subs, so you'll need to engage high-pass filtering on your chosen top speakers.There are back panel LEDs for\"Power'and'Signai,'a red LED indicating limiter engagement, and a gain knob allowing adj ustments of plus or minus 1 OdB to the i nternal amplifier. The KS212C is spec'ed to délivé- 3,600 W of peak power to its dual 12-in. drivers inside an 13mm birch plywood enclosure.This unit iscapabie of handling 132dB of peak SPL at 1 metre, with a quoted frequency response (-6dB) of 44 to 104 Hz and a frequency range (-1 OdB) of 39 to 118 Hz As you would expect, the KS212C occupies a larger slice of real estate than the KS' 12, measuring 24.5 x 15.5 x 33.5 in. including casters.
Magazine Article
QSC KS112 & KS212C Powered Subwoofers
2018
Overview After unboxing, I was instantly struck with the quality fit and finish of both units, with a handsome black paintjob covering the solid-feeling enclosures, and well-placed cast aluminum handles. [...]the KS212C is an entirely different beast altogether! QSC touts this product as \"the world's first-in-class single-box powered cardioid subwoofer solution,\" meaning it is designed to provide a degree of bass attenuation to the rear and sides. The KS212C is spec'ed to deliver 3,600 W of peak power to its dual 12-in. drivers inside an 18-mm birch plywood enclosure.This unit is capable of handling 132dB of peak SPL at 1 metre, with a quoted frequency response (-6dB) of 44 to 104 Hz and a frequency range (-1 OdB) of 39 to 118 Hz.
Book Review