Publications by authors named "Stephen M Mann"

Background: The aim of this study was to describe long-term (10-year) patient survival after arthroplasty for hip fracture and to determine what patient factors are associated with that outcome.

Methods: We performed a retrospective cohort analysis of patients ≥60 years old who underwent either hemiarthroplasty or total hip arthroplasty for femoral neck fracture between 2002 and 2009. We used routinely collected, validated health-care databases linked through ICES (formerly known as the Institute for Clinical Evaluative Sciences).

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Background: Total hip arthroplasty (THA) for displaced femoral neck fractures in older patients remains a controversial topic. This study describes patient and surgeon factors that are associated with surgeons' recommendation of THA for this patient population. Furthermore, this study explores surgeon perceptions on why most patients are treated with hemiarthroplasty over THA.

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Background: The optimal treatment of older patients with a displaced femoral neck fracture remains a controversial topic. This study aimed to compare clinical outcomes across a matched group of patients with a femoral neck fracture treated with either hemiarthroplasty or total hip arthroplasty (THA).

Methods: Routinely collected health-care databases were linked to create a population-based cohort of 49,597 patients ≥60 years old from Ontario, Canada, who underwent hemiarthroplasty or THA for a femoral neck fracture between 2002 and 2017.

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Aims: This study aimed to describe practice variation in the use of total hip arthroplasty (THA) for older patients with femoral neck fracture and to determine the association between patient, surgeon, and institution factors and treatment with THA.

Methods: We performed a cross-sectional analysis of 49,597 patients aged 60 years and older from Ontario, Canada, who underwent hemiarthroplasty or THA for femoral neck fracture between 2002 and 2017. This population-based study used routinely collected healthcare databases linked through ICES (formerly known as the Institute for Clinical Evaluative Sciences).

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Background: The relationship between morbid obesity and long-term patient outcomes after primary total hip arthroplasty (THA) has been understudied. The purpose of this study was to determine the association between morbid obesity and 10-year complications (revision surgery, reoperation, dislocation) and mortality in patients undergoing primary THA.

Methods: We conducted a population-based cohort study of patients aged 45–74 years who underwent primary THA for osteoarthritis between 2002 and 2007 using Ontario administrative health care databases.

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Introduction: Although fractures of the pelvic ring account for only 2-3% of all fractures, they are present in approximately 7-20% of patients with high-energy polytrauma. High-energy pelvic fractures are life-threatening injuries, with mortality estimates ranging from 6 to 35%. The purpose of this study was to examine trends in the incidence, diagnosis, treatment, and mortality rates of high-energy pelvic fractures in Ontario, Canada over a 10-year period.

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Background: This is a prospective observational study examining the use of a surgeon-driven intraoperative neurophysiologic monitoring system. Intraoperative neurophysiologic monitoring is becoming the standard of care for spinal surgeries with potential post-operative neurologic deficits. This standard applies to both adult and pediatric spinal surgery, but a shortage of appropriately trained and certified technologists and physiologists can compromise monitoring capabilities in some centers.

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Background: Metal ion levels are used as a surrogate marker for wear in hip resurfacing arthroplasties. Improper component position, particularly on the acetabular side, plays an important role in problems with the bearing surfaces, such as edge loading, impingement on the acetabular component rim, lack of fluid-film lubrication, and acetabular component deformation. There are little data regarding femoral component position and its possible implications on wear and failure rates.

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Background: Compliance with Professional Association of Internes and Residents of Ontario duty hour guidelines has been problematic at our institution. To facilitate orthopedic residents' ability to go home postcall without significant disruption of ongoing clinical activities, a novel call system was adopted at our tertiary care centre. We sought to evaluate the satisfaction and quality of life of orthopaedic residents with that system.

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Hip resurfacing arthroplasty (HRA) is a treatment of end-stage hip arthritis in young patients with excellent bone stock. One hundred four consecutive HRAs (Depuy ASR, Warsaw, Ind) were performed with 36-Item Short Form Health Survey (SF-36), Western Ontario and McMaster University Osteoarthritis Index, Harris Hip Scores, and University of California, Los Angeles activity ratings obtained preoperatively, at 6 months, and at 1 and 2 years postoperatively. Four patients required conversion to total hip arthroplasty.

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