scholarly journals Patient-specific Root-analogue Immediate Titanium Premolar Dental Implants: Prospective Evaluation of Fifteen Patients with One-year Follow-up

2019 ◽  
Vol 20 (2) ◽  
pp. 121-128 ◽  
Author(s):  
Ahmet Emin Demirbaş ◽  
Emine Fulya Akkoyun ◽  
Hasan Önder Gümüş ◽  
Banu Arzu Alkan ◽  
Alper Alkan
Keyword(s):  
Dental Implants ◽  
Patient Specific ◽  
Prospective Evaluation ◽  
One Year

scholarly journals A prospective evaluation of short dental implants in posterior region of the jaws: One year of follow‐up

2019 ◽  
Vol 30 (S19) ◽  
pp. 282-282
Author(s):  
Guilherme Siqueira Ibelli ◽  
Guilherme Josè Pimentel Lopes De Oliveira ◽  
Francisco Assis Mollo Junior ◽  
Rogèrio Margonar ◽  
Thallita Pereira Queiroz
Keyword(s):  
Dental Implants ◽  
Posterior Region ◽  
Prospective Evaluation ◽  
One Year

Prospective evaluation for gastrointestinal bleedings at the University Hospital St. Pölten – one year of follow-up

2019 ◽  
Author(s):  
M Stättermayer ◽  
F Riedl ◽  
S Bernhofer ◽  
A Stättermayer ◽  
A Mayer ◽  
...  
Keyword(s):  
University Hospital ◽  
Prospective Evaluation ◽  
One Year ◽  
The University

Risk Forecast of In-Stent Restenosis by CFD Method

2014 ◽  
Vol 553 ◽  
pp. 235-239
Author(s):  
Chang Yan Lin ◽  
Xiu Jian Liu ◽  
Yu Yang Liu ◽  
Chuang Ye Xu ◽  
Guang Hui Wu
Keyword(s):  
Arterial Wall ◽  
Patient Specific ◽  
Stent Restenosis ◽  
Stent Treatment ◽  
Bifurcation Lesions ◽  
Risk Forecast ◽  
One Year ◽  
Cfd Method ◽  
In Stent Restenosis

The treatment of plaques near and involving coronary bifurcations (CB) is especially challenging, considering more plaques localized these regions and higher post-interventional in-stent restenosis (ISR) risk, mainly due to hemodynamic injury provoked on the arterial wall. Therefore optimization of stenting should begin with an understanding of how disease localized to these regions and why ISR formed associated with flow patterns. We chose four patients with bifurcation lesions, two patients with ISR and two without ISR according to the follow-up computed tomography angiography (CTA). Based on patient-specific pre-interventional and virtual stented geometries from CTA images, numerical simulation indicated that the wall shear stress (WSS) in stented segments, where the ISR occurred in one year, was lower than those without ISR, however. For bifurcation lesion, the stenting segments WSS is supposed a marker to forecast the ISR risk after stent treatment.

scholarly journals What are the Risk Factors for Worse Outcomes of Meniscus Surgery in 23-39-Year-Old Patients Ligamentously Stable Knees?

2020 ◽  
Vol 8 (7_suppl6) ◽  
pp. 2325967120S0046
Author(s):  
◽  
Megan Flynn ◽  
Anthony Egger ◽  
Yuxuan Jin ◽  
Elizabeth Sosic ◽  
...  
Keyword(s):  
Risk Factors ◽  
Young Adult ◽  
Patient Reported Outcomes ◽  
Meniscal Repair ◽  
Patient Specific ◽  
Lower Baseline ◽  
Patient Reported ◽  
Grade 3 ◽  
One Year

Objectives: Meniscus tears are a common and significant source of knee dysfunction in active young adult patients, and no high-quality prospective cohort or RCTs studies exist evaluating patient-reported outcomes in patients in this age group with ligamentously stable knees. Our objective was to identify patient-reported outcomes and patient-specific risk factors from a prospective cohort with a minimum of one-year follow-up following meniscal repair or excision in patients with ligamentously stable knees. We hypothesized that both groups would have significant improvement in outcomes; patients undergoing meniscal repair would have a higher reoperation rate; and articular cartilage injuries, subsequent knee surgery, and certain demographic characteristics would be significant risk factors to inferior outcomes at one year. Methods: Between February 2015 and December 2017, ligamentously stable meniscal procedures were enrolled and prospectively followed using the outcomes management evaluation system (OME) at Cleveland Clinic. Patients aged 23-39 preoperatively completed a series of validated outcome measurements including the Knee Injury and Osteoarthritis Outcome Score for both Pain (KOOS Pain) and Quality of Life (KOOS QoL). At the time of surgery, physicians documented all intra-articular findings, treatment, and surgical techniques utilized. Patients were followed at minimum of 1-year postoperatively through the OME platform and asked to complete the same outcome instruments done at baseline as well as a question designed to evaluate the Patient Acceptable Symptom State (PASS). The incidence and details of any subsequent knee surgeries were also obtained. Multivariable regression analysis was used to identify significant predictors of outcomes. Results: A total of 371 patients aged 23-39 underwent meniscus excision or repair during the study period. One hundred ninety-four met inclusion criteria, and one-year follow-up was obtained on 72% (n = 139) of the cohort (67% male; median age 32). Both KOOS Pain and KOOS QoL improved significantly at one-year for the entire cohort. Fourteen percent of the cohort (9% on the ipsilateral knee, 5% on the contralateral knee) underwent subsequent surgery at a minimum of one-year postoperatively. The patient-specific risk factors for worse one-year outcomes included preoperative baseline mental capacity score (VR-12 MCS), lower baseline KOOS QoL score, and the intraoperative finding of any grade 3 or 4 chondral changes. Conclusion: Young adult patients with ligamentously stable knees undergoing meniscal surgery have significantly improved patient-reported outcomes regardless of excision or repair; however, 14% of patients underwent additional knee surgery at a minimum of one-year postoperatively. The risk factors for worse outcomes include lower baseline mental health score, lower baseline KOOS QoL score, and any grade 3 or 4 chondromalacia scene.

Prospective evaluation of a chest pain pathway in the coronary care unit at green lane hospital; One year follow up study

2003 ◽  
Vol 12 (2) ◽  
pp. A34
Author(s):  
John J. Edmond ◽  
John K. French ◽  
Hanneke Henny ◽  
Ralph A.H. Stewart ◽  
Teena West ◽  
...  
Keyword(s):  
Chest Pain ◽  
Coronary Care Unit ◽  
Prospective Evaluation ◽  
Follow Up Study ◽  
Pain Pathway ◽  
Coronary Care ◽  
One Year

scholarly journals Early experience and patient-reported outcomes of 503 INFINITY total ankle arthroplasties

2021 ◽  
Vol 103-B (7) ◽  
pp. 1270-1276
Author(s):  
David N. Townshend ◽  
Andrew J. F. Bing ◽  
Timothy M. Clough ◽  
Ian T. Sharpe ◽  
Andy Goldberg ◽  
...  
Keyword(s):  
Functional Outcome ◽  
Early Experience ◽  
Outcome Data ◽  
Patient Specific ◽  
Patient Specific Instrumentation ◽  
Significant Difference ◽  
Patient Reported ◽  
The Mean ◽  
One Year

Aims This is a multicentre, non-inventor, prospective observational study of 503 INFINITY fixed bearing total ankle arthroplasties (TAAs). We report our early experience, complications, and radiological and functional outcomes. Methods Patients were recruited from 11 specialist centres between June 2016 and November 2019. Demographic, radiological, and functional outcome data (Ankle Osteoarthritis Scale, Manchester Oxford Questionnaire, and EuroQol five-dimension five-level score) were collected preoperatively, at six months, one year, and two years. The Canadian Orthopaedic Foot and Ankle Society (COFAS) grading system was used to stratify deformity. Early and late complications and reoperations were recorded as adverse events. Radiographs were assessed for lucencies, cysts, and/or subsidence. Results In all, 500 patients reached six-month follow-up, 420 reached one-year follow-up, and 188 reached two-year follow-up. The mean age was 67.8 years (23.9 to 88.5). A total of 38 patients (7.5%) presented with inflammatory arthritis. A total of 101 (20.0%) of implantations used patient-specific instrumentation; 167 patients (33.1%) underwent an additional procedure at the time of surgery. A total of seven patients died of unrelated causes, two withdrew, and one was lost to follow-up. The mean follow-up was 16.2 months (6 to 36). There was a significant improvement from baseline across all functional outcome scores at six months, one, and two years. There was no significant difference in outcomes with the use of patient-specific instrumentation, type of arthritis, or COFAS type. Five (1.0%) implants were revised. The overall complication rate was 8.8%. The non-revision reoperation rate was 1.4%. The 30-day readmission rate was 1.2% and the one-year mortality 0.74%. Conclusion The early experience and complications reported in this study support the current use of the INFINITY TAA as a safe and effective implant in the treatment of end-stage ankle arthritis. Cite this article: Bone Joint J 2021;103-B(7):1270–1276.

scholarly journals Mechanical Evaluation of Collapse Risk for Osteonecrosis of Femoral Head Post-Medical Treatment

2021 ◽  
Author(s):  
Yuqian Mei ◽  
Qi Tang ◽  
Songhao Chen ◽  
Duanduan Chen
Keyword(s):  
Femoral Head ◽  
Medical Treatment ◽  
Early Stage ◽  
Equivalent Stress ◽  
Stress Index ◽  
Patient Specific ◽  
Relative Stress ◽  
The Mean ◽  
One Year

Abstract Background: Early-stage osteonecrosis of the femoral head can progressively induce the bone collapse and the accuracy of the collapse risk evaluation is limited. This study aims to propose a potential collapse indicator by biomechanical evaluating the treatment effectiveness. Methods: Six patient-specific models pre- (initial presentation) and post- medical treatment were established and elastic properties of the bone were assigned with a function of spatial-variant Hounsfield unit values. Morphological and mechanical analyses were compared between pre- and post-treatment models. Results: In the morphological study, four cases show the reduced ratio of low-density necrotic volume, but not consistent with one-year follow-up results. In the mechanical analysis, the equivalent stress variation near the Ward triangle shows consistency in the one-year outcome. Moreover, a parameter - relative stress index, the ratio between the mean volume stress index and the mean volume equivalent stress, is proposed. A smaller value of the relative stress index indicates stronger bone compressive strength and its variation is consistent with the follow-up results. Conclusions: Results implicate that to evaluate the effectiveness of medical treatments, the morphologic analysis should be considered but the mechanical capability and the loading transfer path through the necrotic and viable bone play a more important role.

scholarly journals Prospective evaluation of clinical outcomes between pre‐cut corneal grafts prepared using a manual or automated technique: with one‐year follow‐up

2019 ◽  
Vol 97 (7) ◽  
pp. 714-720 ◽  
Author(s):  
Marc B. Muijzer ◽  
Chantal M. van Luijk ◽  
Antoon J. van den Bogaerdt ◽  
Piet J. Kruit ◽  
Esther Groeneveld‐van Beek ◽  
...  
Keyword(s):  
Clinical Outcomes ◽  
Prospective Evaluation ◽  
Automated Technique ◽  
One Year

Abstract 16230: Pulmonary Autograft Wall Stresses One Year After Ross Operation

Circulation ◽  
2020 ◽  
Vol 142 (Suppl_3) ◽  
Author(s):  
Edgardo Alonso ◽  
Yue XUAN ◽  
Alexander Emmott ◽  
Zhongjie Wang ◽  
Shalni Kumar ◽  
...  
Keyword(s):  
Ascending Aorta ◽  
Patient Specific ◽  
Principal Stresses ◽  
Ross Operation ◽  
Children And Young Adults ◽  
Specific Material ◽  
One Year ◽  
Patients Experience

Introduction: The Ross procedure is an excellent option for children and young adults who need aortic valve replacement as this surgery can restore patient survival to that of a normal sex and aged-matched population. However, some patients experience aneurysmal formation during autograft remodeling and require reoperation. As the underlying biomechanics of autograft remodeling are unknown, we investigated patient-specific wall stresses in pulmonary autografts one year post-operatively to better understand systemic pressure-driven early autograft wall stresses. Methods: Ross patients (n=16) who underwent intraoperative collection of pulmonary root/aortic specimen, and subsequent one-year MRI follow-up were recruited. Patient-specific material properties from their tissue were experimentally determined and incorporated into autograft ± Dacron and ascending aorta finite element models. A multiplicative approach was used to account for pre-stress geometry from in-vivo MRI. Physiologic pressure loading was simulated with LS-DYNA software. Results: At systemic systole, first principal stresses were 567kPa (25-75% IQR, 485-675kPa), 809kPa (691-1219kPa), and 382kPa (334-413kPa) at autograft sinuses, sinotubular junction (STJ), and ascending aorta, respectively. Second principal stresses were 355kPa (320-394kPa), 360kPa (310-426kPa), and 184kPa (147-222kPa) at autograft sinuses, STJ, and ascending aorta, respectively. Mean autograft diameters were 38.3±5.3mm, 29.9±2.7mm, and 26.6±4.0mm at sinuses, STJ, and annulus, respectively. Conclusions: First principal stresses were mainly located at STJ, particularly when Dacron reinforcement was applied to constrain STJ dilatation. However, at one-year after the Ross operation, autograft dilatation was not seen despite elevated autograft wall stresses compared to their internal controls, the lower wall stresses in corresponding native distal ascending aorta. In this group of patients, higher risk of dilatation is expected in the sinuses and STJ if not constrained by Dacron than the corresponding ascending aorta. Future follow-up will elucidate the biomechanics of long-term autograft remodeling to develop predictive models for autograft dilatation.

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