David Wasserstein's research while affiliated with University of Toronto and other places
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Publications (15)
Purpose
The purpose of this study was to investigate biomechanical differences of medial patellofemoral ligament (MPFL) reconstruction, medial quadriceps tendon femoral ligament (MQTFL) reconstruction and a combination of these techniques to restore lateral patellar constraint and contact pressures.
Methods
Eight fresh frozen cadaver knees were mo...
Stress injury of bone includes a spectrum from hyperactive bone remodeling to a discrete fracture line visible on imaging. Stress fractures can occur when bone, either healthy or deplete, is subject to repeated loading with a subsequent loss of normal bone metabolism and failure of remodeling. Factors that increase load, such as repetitive impact,...
Background
Health care funding reforms are being used worldwide to improve system performance but may invoke unintended consequences. We assessed the effects of introducing a targeted hospital funding model, based on fixed price and volume, for hip fractures. We hypothesized the policy change was associated with reduction in wait times for hip frac...
Background
Geriatric patients are the most rapidly growing cohort of patients sustaining acetabular fractures (AFs). The purpose of this study was to examine the risk of a secondary total hip arthroplasty (THA) in older patients (>60 years old) with a prior AF open reduction internal fixation (ORIF) compared to younger patients (<60 years old) with...
Objective:
To characterize and compare the incidence of basketball-related, soccer-related, and hockey-related injuries over a 10-year period.
Design:
Cohort analysis of sport-related injuries using multiple Ontario healthcare databases.
Setting:
Emergency department visits in Ontario, Canada.
Patients:
Any patient who sustained musculoskele...
Distal femoral physeal/epiphyseal fracture is an uncommon injury, estimated to account for between 1.4 and 2% of all paediatric physeal injuries [1]. However, they often have significant sequelae. On average, growth disturbance occurs in more than half of these patients, with higher chances in displaced fractures and lower in non-displaced fracture...
Objective
To estimate the 1) accuracy of algorithms for identifying osteoarthritis (OA) using health administrative data; and 2) population-level OA prevalence and incidence over time in Ontario, Canada.
Method
We performed a retrospective chart abstraction study to identify OA patients in a random sample of 7500 primary care patients from electro...
Background
The Government of Ontario, Canada, announced hospital funding reforms in 2011, including Quality-based Procedures (QBPs) involving pre-set funds for managing patients with specific diagnoses/procedures. A key goal was to improve quality of care across the jurisdiction.
Methods
Interrupted time series evaluated the policy change, focusin...
Background: Meniscal strain patterns are not well understood during dynamic activities. Furthermore, the impact of ACL reconstruction on meniscal strain has not been thoroughly investigated. The purpose of this study was to characterize ACL and meniscal strain during dynamic activities and investigate the strain difference between ACL-intact and AC...
Stress injury of bone includes a spectrum from hyperactive bone remodeling to a discrete fracture line visible on imaging. Stress fractures can occur when bone, either healthy or osteopenic, is subject to repeated loading with subsequent failure of normal bone metabolism and remodeling. Factors that increase load, such as repetitive impact through...
Purpose
Acute metatarsal fractures are a common lower extremity injury. While surgery may be recommended in specific cases, the vast majority are treated non‐operatively. Treatment protocols vary significantly among practitioners with no consensus on the most efficacious approach. This systematic review aims to identify the effect of treatment prot...
Background:
Observational studies have suggested that accelerated surgery is associated with improved outcomes in patients with a hip fracture. The HIP ATTACK trial assessed whether accelerated surgery could reduce mortality and major complications.
Methods:
HIP ATTACK was an international, randomised, controlled trial done at 69 hospitals in 17...
Objectives:
To define the risk and incidence of post-traumatic ankle arthritis requiring ankle arthroplasty or fusion after ankle fracture in a large cohort, and compare that rate to matched healthy patients from the general population.
Design:
Multiple databases were used to identify patients either treated surgically or non-surgically for ankl...
Background:
Few studies have investigated the outcomes of surgical fracture care among socially deprived patients despite the increased incidence of fractures and the inequality of care received in this group. We evaluated whether socioeconomic deprivation affected the complications and subsequent management of marginalized/homeless patients follo...
Purpose
Knee dislocations (KDs) are potentially devastating injuries, leading to loss of function or limb in often young patients. This retrospective database review aims to determine the relative incidence and risk factors for KDs presenting to North American Level I and II trauma centers.
Methods
The National Trauma Data Bank (NTDB) was retrospe...
Citations
... Additionally, certain intervention and policy evaluations may not be feasible under a control-treatment design, and for which the ITS approach is more suitable. This applies to studies which focus on a specific patient [53] or hospital group [10], or policies at a more aggregate or population level [54], for which it is difficult to identify a naturally occurring control group. Therefore, the inclusion of a control group in these instances would not be suitable, suggesting a before-after comparison in the level and trend of outcomes using ITS analysis as a more suitable approach. ...
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... frail with multiple co-morbidities. The rate of conversion to THA following acetabular ORIF was 25.8% (n = 16), which is comparable to the re-operation rates from studies by Khoshbin et al. and Navarre et al. [18,19]. In terms of additional post-operative complication rates, nine patients developed HO, two patients developed early AVN, surgical site infection (SSI) was reported in three patients, loss of reduction in three patients and five patients had sustained a post-operative nerve palsy (all involved the lateral cutaneous nerve of the thigh, following an ilioinguinal approach). ...
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... We conducted a cross-sectional observational study to examine the spatial pattern of non-local PCP utilization and associated confounding factors using administrative health data. Prevalent OA cohort in the fiscal year 2012/13 (1 April 2012-31 March 2013) were identified using a validated OA case definition [2,7,34]. Exploratory spatial analysis was applied to detect spatial pattern of non-local PCP utilization. ...
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... In truth, bone modeling and remodeling are complex processes, especially when growth and exercise intersect. SF have been associated with normal remodeling and high strains, or normal strains with decreased remodeling [87]. Even though it is not clear what pathophysiological mechanism prevails in racehorses, any interruption in normal osteoclast resorption could be harmful and lead to damage accumulation over time. ...
... A cute metatarsal fractures are a common lower extremity injury. Although surgery may be required in speci c cases, most are now treated nonoperatively (Khan et al, 2020). Fractures of the base of the h metatarsal have long been highlighted in orthopaedic practice (Pugliese et al, 2020). ...
Reference: Podiatry and post-injury fracture management
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... Expedited management and comprehensive care pathways have been proven to improve outcomes, including survival rate, for these patients. [22][23][24] These circumstances provide an ideal use case for this novel technology should its performance be equal or superior to human performance. Image analysis and clinical decision support systems powered by AI may automate sections of the diagnostic pathway and improve outcome prediction accuracy. ...
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... 23 Surgical management of displaced ankle fractures has been the standard of care secondary to tibiotalar incongruence or displacement predisposing to the development of early posttraumatic osteoarthritis. 2,5,18,26 However, despite appropriate treatment and restoration of alignment after ankle fracture surgical fixation, a certain subset of this population experiences poor long-term clinical outcomes. 1,9,12,29 Several studies 12,22,29 examining chronic ankle pain and osteoarthritis in patients have shown posttraumatic injury as a prevalent historical element. ...
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... 26,45 With respect to complications, two studies reported high rates of treatment failure and amputation for orthopedic injuries, including open reduction and internal fixation for ankle fracture and foot osteomyelitis. 28,47 A study by Titan et. al. found that homeless VA patients undergoing general, vascular, and orthopedic surgeries were more likely to be readmitted, particularly those who were discharged to the community rather than acute rehabilitation after surgery. ...
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... F racture dislocations of the knee remain a complex and difficult injury pattern to treat because of heterogeneity of injuries and low incidence. These injuries are typically caused by high-energy trauma and are seen in approximately 0.001 to 0.2% of all orthopaedic trauma patients [1][2][3][4][5] . Historically, in cases involving rupture of the anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) with associated fractures of the posterolateral corner (PLC), the PLC is treated acutely, followed by a staged treatment of the cruciate ligaments. ...
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