A5016255253- Orthopaedic implants and arthroplasty
- Total Knee Arthroplasty Outcomes
- Orthopedic Infections and Treatments
- Hip disorders and treatments
- Hip and Femur Fractures
- Advanced materials and composites
- Bone fractures and treatments
- Lower Extremity Biomechanics and Pathologies
- Surgical site infection prevention
- Sports injuries and prevention
- Alkaline Phosphatase Research Studies
- Composite Material Mechanics
- Bone Tissue Engineering Materials
- Infectious Diseases and Tuberculosis
- Mesenchymal stem cell research
- Advanced X-ray and CT Imaging
- Polymer crystallization and properties
- Bone and Dental Protein Studies
- Pelvic and Acetabular Injuries
- Spine and Intervertebral Disc Pathology
Brigham and Women's Hospital
2010-2024
Harvard University
2003-2024
Orthopedic Institute
2023
Massachusetts General Hospital
1995-2018
Surgical Science (Sweden)
2006
Peachtree Orthopaedic Clinic
1998
Management of periprosthetic femoral fractures is often complex, and few studies have documented its associated mortality.We retrospectively identified from our trauma surgical registries 106 patients who underwent surgery for a fracture. We then contemporaneous age sex-matched control cohort 309 had hip fracture (femoral neck or intertrochanteric) 311 primary knee replacement. Mortality at one year was with use the Social Security database.Twelve (11%) died within following treatment During...
One hundred and forty-nine patients (162 hips) had a standard primary total hip arthroplasty with grit-blasted femoral component use of so-called second-generation cementing techniques. No patient was lost to follow up. Fifty-one (sixty died within fourteen years after the index operation. The remaining ninety (102 were followed for minimum years. Of fifty-one who years, three (three hips; 5 per cent) revision: one, because aseptic loosening acetabular component; one both components. alive...
Abstract The purpose of this study was to develop and test a phantom model based on actual total hip replacement (THR) components simulate the true penetration femoral head resulting from polyethylene wear. This used both accuracy precision radiostereometric analysis, RSA, in measuring We also evaluate optimum tantalum bead configuration for particular cup design when clinical setting. A physical (a phantom) constructed which could progressive, three‐dimensional (3‐D) into component THR....
From a group of 43 hips in 41 patients, previously reported at an average six years follow-up evaluation, whom second-generation cementing techniques were used during femoral revision hip surgery, 38 36 patients rereviewed period 11.7 (range, 118–172 months). The age the time surgery was 52.8 years. Only four components (10.5%) required rerevision for aseptic loosening. Of those not rerevised, Harris score evaluation 81. Four additional had radiographic evidence definite component survival...
In this report, we present the results of a further follow-up series 140 consecutive patients (161 hips) who had primary total hip arthroplasty with insertion bead-blasted monoblock femoral component use so-called second-generation cementing techniques. The average age at time was sixty-one years (range, twenty-one to eighty-five years). Sixty-seven (seventy-seven died less than seventeen after index operation. remaining seventy-three (eighty-four were followed for an eighteen twenty No...
Fractures of the femur after a knee or hip arthroplasty historically have been plagued with high complication rates. The Less Invasive Stabilization System (LISS) has theoretical advantages improved biomechanics and limited insult to bone's vascular supply. We theorized that LISS would lower rate than historical controls for these fractures. Patients who were treated at two Level I trauma centers from July 2001 2003 prospectively followed up. inclusion criteria an acute fracture in patient...
Background: Revision hip arthroplasty is associated with a dislocation rate that three to five times greater than the following primary replacement. Conversion of hemiarthroplasty total replacement revision arthroplasty, but it differs from revisions arthroplasties because native acetabulum replaced and subsequent prosthetic femoral head smaller. It was our purpose determine whether risk conversion surgery same as or Methods: From 1994 2005, eighty-nine hemiarthroplasties were converted in...
Radiostereometry has high precision and accuracy measuring polyethylene wear in total hip arthroplasty but requires a specialized setup. The Martell method is simpler can be used on larger populations. hypothesis that the radiostereometry analysis would yield comparable data from same group of patients having was tested. A twenty-five who had both standard anterior-posterior pelvic cross-table lateral radiographs sufficient quality for were identified. films taken at postoperative periods 6...
Radiostereometric analysis (RSA) has been used extensively to evaluate the magnitude and direction of penetration femoral head into acetabular component a total hip replacement as result polyethylene wear creep. The accuracy precision an RSA study depends on several factors, including radiographic technique, analytical software, positioning tantalum markers. This had three sequential purposes. First, in vitro phantom model was quantify digital images versus conventional radiography...
Abstract We developed an analytical technique to determine the paths traced by specific points on femoral head against acetabulum in human hip joint during gait. The purpose of study was apply this mechanical simulators chosen conduct wear tests polymeric acetabular liners used total replacements. These differ from one another type motion produced, apart other variables such as lubricant and position. Due variation kinematics between machines, liner ranged simple linear traces figure‐8 loops...
Stress magnitude and distribution of both conventional polyethylene versus a crosslinked in the liner total hip replacement (THR) were examined using finite element analysis pressure sensitive film. Both types assessed against head sizes 22 28 mm with 5-mm thick liners 28, 38, 46 3-mm liners. Liners represented successful combinations long track records. Our hypothesis was that although combination large lower modulus highly would lead to stresses, stresses be excessive if extremely thin at...