A5102840596- Orthopaedic implants and arthroplasty
- Total Knee Arthroplasty Outcomes
- Orthopedic Infections and Treatments
- Hip disorders and treatments
- Atmospheric chemistry and aerosols
- Atmospheric Ozone and Climate
- Pelvic and Acetabular Injuries
- Hip and Femur Fractures
- Air Quality and Health Impacts
- Knee injuries and reconstruction techniques
- Vehicle emissions and performance
- Atmospheric and Environmental Gas Dynamics
- Advanced Chemical Physics Studies
- Bone fractures and treatments
- Atmospheric aerosols and clouds
- Musculoskeletal synovial abnormalities and treatments
- Advanced materials and composites
- Osteoarthritis Treatment and Mechanisms
- BIM and Construction Integration
- Construction Project Management and Performance
- Reconstructive Surgery and Microvascular Techniques
- Bone and Joint Diseases
- Bone Tumor Diagnosis and Treatments
- Sarcoma Diagnosis and Treatment
- Energy and Environment Impacts
Mount Sinai Hospital
2015-2025
University of Toronto
2015-2025
Aarhus University
2013-2023
Sinai Hospital
1976-2021
Intellijoint Surgical (Canada)
2021
Queen's University
2019
Mount Sinai Hospital
2002-2015
Hospital for Sick Children
2015
Regionshospitalet Herning
2013
Mount Sinai Hospital
2004-2012
The results of the placement a massive structural acetabular allograft in conjunction with revision total hip arthroplasty thirty-two patients (thirty-tree hips) were evaluated at minimum five years. graft supported more than 50 percent cup all patients. goals operation that has loss bone are to provide support for cup, approximate normal anatomy, restore length lower limb, and stock should future be necessary. Clinical radiographic review an average seven years (range, eleven years) after...
To investigate the use of standard magnetic resonance (MR) imaging sequences with simple parameter modifications for detection and characterization total hip arthroplasty (THA) complications.An initial phantom study was performed cobalt-chrome titanium prostheses to establish parameters a subsequent clinical study. In study, coronal transverse MR 14 THA before after intravenous contrast material administration in 12 patients who were being considered revision arthroplasty. The images...
Background: Periprosthetic femoral fractures around hip replacements are increasingly common. When the component is stable, open reduction and internal fixation recommended in all but exceptional cases. The purpose of this study was to evaluate outcome treatment stable implants with cortical onlay strut allografts or without a plate. Methods: A survey our four centers identified forty patients fracture well-fixed stem treated revision component. There were fourteen men twenty-six women, an...
Abstract. We present a comparison of tropospheric NO2 from OMI measurements to the median an ensemble Regional Air Quality (RAQ) models, and intercomparison contributing RAQ models two global for period July 2008–June 2009 over Europe. The model forecasts were produced routinely on daily basis in context European GEMS ("Global regional Earth-system (atmosphere) Monitoring using Satellite in-situ data") project. vertical column shows spatial distribution which agrees well with observations,...
Mechanical failure of femoral stems at the modular junction revision hip arthroplasty systems has been reported only infrequently. In current study, cause six stem fractures, which occurred in vivo, was analyzed with use clinical data and analysis.Six patients a fracture mid-stem implant were identified our database who had undergone arthroplasty. The characteristics fractured compared those 165 from same prospective implanted, least two years follow-up, not stem. Failure analysis three...
Pelvic discontinuity with associated bone loss is a complex challenge in acetabular revision surgery. Reconstruction using ilio-ischial cages combined trabecular metal components and morsellised (the component-cage technique) relatively new method of treatment. We reviewed consecutive series 26 cases reconstructions 24 patients pelvic who had been treated by the technique. The mean follow-up was 44.6 months (24 to 68). Failure defined as migration component > 5 mm. In 23 hips (88.5%) there...
Trabecular metal (TM) augments are a relatively new option for reconstructing segmental bone loss during acetabular revision. We studied 34 failed hip replacements in patients that were revised between October 2003 and March 2010 using TM shell one or two augments. The mean age of the at time surgery was 69.3 years (46 to 86) follow-up 64.5 months (27 107). In all, 18 had minor column defect, 14 major associated with pelvic discontinuity. centre rotation restored 27 (79.4%). Oxford score...
Abstract. We have developed an integrated model system, EVA (Economic Valuation of Air pollution), based on the impact-pathway chain, to assess health-related economic externalities air pollution resulting from specific emission sources or sectors, which can be used support policy-making with respect control. Central for system is a newly tagging method capable calculating contribution source sector overall levels, taking into account non-linear atmospheric chemistry. The main objective this...
Acetabular component revision in the context of large contained bone defects with less than 50% host contact traditionally have been treated roof reinforcement or antiprotrusio cages. Trabecular Metal™ cups (Zimmer, Inc, Warsaw, IN) may offer a reasonable treatment alternative. We evaluated clinical and radiographic outcome this mode treatment. prospectively followed 53 hip acetabular arthroplasty procedures performed for native bone. All patients were clinically radiographically evidence...
Abstract. An integrated model system, EVA (Economic Valuation of Air pollution), based on the impact-pathway chain has been developed to assess health-related economic externalities air pollution resulting from specific emission sources or sectors. The system can be used support policy-making with respect control. In this study, we apply Europe, and perform a more detailed assessment past, present, future health-cost total levels in Europe (including both natural anthropogenic sources),...
Restoring normal anatomy and achieving stable fixation of the acetabular component can be especially challenging when surgeon must deal with severe defects and/or pelvic discontinuity. The cup-cage (CC) construct, where an ilioischial cage is cemented within a biologically fixed porous metal cup, has emerged as excellent option to treat such challenges.We sought determine (1) mid-term Kaplan-Meier survival; (2) clinical outcomes based on Merle d'Aubigné-Postel scores; (3) radiological...
Massive bone defects are challenging problems in revision knee surgery. When large and uncontained (without a cortical rim), structural allografts may be used to provide support for femoral tibial components. This study reviewed 68 at mean of 5.4 years clinical radiographic outcomes. Indications grafts included periprosthetic fracture 19 knees, aseptic loosening 29, infection 11 instability 2. Seven knees had both allografts. Multiple implant designs were including 7 hinged prostheses....
Allograft bone was used to reconstruct a defect in the proximal aspect of tibia or distal femur, both, thirty knees twenty-eight patients who had revision total knee arthroplasty. The average age at time index procedure 65.8 years (range, twenty-four eighty-nine years).At an fifty months 132 months; median, thirty-six months) postoperatively, score for twenty-three (twenty-one patients) increased by least 20 points, and these did not need additional operative treatment. Thus, rate success 77...
Fifty-two frozen bone allografts have been used on 44 patients undergoing revision hip arthroplasties. The average follow-up time these has 17 months, with a range of six to 72 months. Both proximal femoral and the for reconstruction acetabular deficiencies used. To date, most experience marked pain relief improvement in function. Though results attained date are short-term, use arthroplasties represents natural progression tumor work. However, while early encouraging, it remains be seen how...
Seventeen patients in whom secondary degenerative arthritis developed after a tibial plateau fracture underwent osteochondral allograft resurfacing of the involved plateau. The transplantation was done within twenty-four hours procurement from cadaver donor so that viable cartilage would be used. There were sixteen grafts, and one patient had femoral graft. Twelve have been followed for more than two years. A rating system pain function showed marked improvement ten twelve patients. clinical...
The use of ilioischial cage reconstruction for pelvic discontinuity has been replaced by the Trabecular Metal (Zimmer, Warsaw, Indiana) cup-cage technique in our institution, due to unsatisfactory outcome using a alone this situation. We report 26 discontinuities 24 patients (20 women and four men, mean age 65 years (44 84)) treated at follow-up 82 months (12 113) compared them with series 19 (18 one man, 70 (42 86)) 69 (1 170). clinical radiological outcomes as well survivorship groups were...