- Migration, Aging, and Tourism Studies
- Research in Social Sciences
- Healthcare Systems and Challenges
- Foot and Ankle Surgery
- Global Health Workforce Issues
- Underground infrastructure and sustainability
- Healthcare innovation and challenges
- Recreation, Leisure, Wilderness Management
- Geriatric Care and Nursing Homes
- Orthopedic Surgery and Rehabilitation
- Tendon Structure and Treatment
- Sport and Mega-Event Impacts
- Transportation and Mobility Innovations
- Lower Extremity Biomechanics and Pathologies
- Global Healthcare and Medical Tourism
- Housing, Finance, and Neoliberalism
- Rural development and sustainability
- Nursing Roles and Practices
- Social Issues and Policies
- Urban Transport and Accessibility
- Disaster Response and Management
- Health Services Management and Policy
- Education Systems and Policy
- Child and Adolescent Health
- Trauma and Emergency Care Studies
Oregon Clinic
2005-2010
University of Utah
1997-2003
Williams & Associates
2002
University of Washington
2002
Shriners Hospitals for Children - Salt Lake City
2001
Intermountain Healthcare
2001
Primary Children's Hospital
1997
Background: Newer designs and techniques of total ankle arthroplasty (TAA) have challenged the assumption arthrodesis (AA) as primary treatment for end-stage arthritis. The objective this study was to compare physical mental function, ankle-specific pain intensity, rates revision surgery minor complications between these 2 procedures explore heterogeneous effects due age, body mass index (BMI), patient sex, comorbidities, employment on patients treated by 1 methods. Methods: This a multisite...
There is some uncertainty as to whether the distal metatarsal articular angle (DMAA) a real entity or just radiographic artifact and it can be reliably measured. If intrinsic bone, should not change with bone position. clinically useful, reproducible. Pre-operative post-operative radiographs of 32 patients undergoing proximal bony procedure first ray were evaluated independently by three foot ankle specialists in order determine intra inter-observer reliability (DMAA). In addition, hallux...
We analyzed self-reported outcomes in a prospective cohort of patients treated with ankle arthrodesis or total replacement (TAR) during time transition from older to newer-generation TAR implants.We performed study comparing 273 consecutive for arthritis between 2005 and 2011. Adult end-stage who were able walk willing respond surveys included the study. Patients excluded when they had another lower-limb problem that might affect walking. At baseline at 6, 12, 24, 36-month follow-up visits,...
Submission Type: Ankle Arthritis Research Level 2 - Prospective comparative study, Meta-analysis of studies or 1 with inconsistent results Introduction/Purpose: Patients seeking surgical treatment for end stage ankle arthritis (ESAA) have two primary options: arthrodesis (AA) and total arthroplasty (TAA). It is imperative to understand the long-term effectiveness these options. The objectives this study were compare treatments determine if trajectory improvement in patient reported outcomes...
Background: The rate of total ankle arthroplasty (TAA) is increasing relative to arthrodesis (AA) for patients seeking surgical treatment end-stage arthritis. Patients and providers would benefit from a more complete understanding the improvement, average length time achieve maximal function minimal pain, whether there greater decline in or an increase pain over following TAA compared with AA. objectives this study were compare changes overall physical mental ankle-specific function, as well...
We compared the pressure distribution in ankle and posterior facet of subtalar joint following 1 cm medial lateral displacement calcaneal osteotomies to intact foot. Six cadaver specimens were loaded neutral alignment while measurements recorded. A 1-cm osteotomy shifted average center force 1.0 mm medially (p = 0.36) a 1.1 laterally 0.42). There was also slight shift percentage toward side talus which calcaneus shifted. For osteotomy, increased 4.0% lateral-most quadrant 0.05), 1.3% 0.30)....
Eleven feet (nine patients) with symptomatic flatfoot deformities of various etiologies that had failed nonoperative treatment underwent distal calcaneal lengthenings. Pre- and postoperative plantar pressure measurements radiographic parameters were compared a clinical evaluation was performed using the AOFAS ankle hindfoot scoring system. Follow-up ranged from 4 to 20 months (mean, 11.1 months). Plantar including contact area, mean, peak pressures indicated significant lateral shifts in...
The Evans calcaneal lengthening osteotomy has gained popularity in recent years for the treatment of symptomatic flexible pes planus deformity. To our knowledge, occurrence a stress fracture fifth metatarsal not been reported after this procedure. We report two such cases and discuss probable mechanism problem, relative overloading lateral aspect foot. Both were treated successfully with immobilization. Clinicians should be aware possible problem treat it appropriately.
Eleven feet (nine patients) with symptomatic flatfoot deformities of various etiologies that had failed nonoperative treatment underwent distal calcaneal lengthenings. Pre-and postoperative plantar pressure measurements and radiographic parameters were compared a clinical evaluation was performed using the AOFAS ankle hindfoot scoring system. Follow-up ranged from 4 to 20 months (mean, 11.1 months). Plantar including contact area, mean, peak pressures indicated significant lateral shifts in...
Primary tarsometatarsal arthrosis is relatively uncommon. The etiology of osteoarthritis in the foot poorly understood, and it possible that mechanical or anatomic factors play a role.We compared relative length metatarsals patients with idiopathic midfoot group controls without arthrosis. We analyzed radiographs all who had an arthrodesis first, second, third joints to treat during three-year period at tertiary teaching hospital. excluded history inflammatory arthritis, trauma, Charcot...
Abstract This study compared the stability of periprosthetic femur fractures fixed using cortical allograft struts with a metal plate. Cadaveric specimens were loaded in single-leg stance and stair climbing to 2250 N. Optimum was achieved two long medially laterally. No clear advantage noted second strut climbing. Cables rather than wires useful stance, but not Allograft are biomechanically sound alternative plates screws cables for fracture fixation below well-fixed femoral component.
Background: This study summarized the frequency and functional impact of adverse events (AEs) that occur after surgery for end-stage ankle arthritis (ESAA) to inform decision making. Methods: was a multisite prospective cohort compare arthroplasty arthrodesis in treatment ESAA among 6 participating sites. We compared risk nonankle AEs ankle-specific versus no controlling potential confounding factors, including operative procedure using multinomial logistic regression. estimated differences...
Background: Ambulatory activity is reduced in patients with ankle arthritis. In this study, we measured step over time 2 treatment groups and secondarily compared results of patient-reported outcome measures (PROMs). Methods: Patients who were treated either arthrodesis or arthroplasty wore a monitor preoperatively at 6, 12, 24, 36 months postoperatively. Changes from preoperative baseline total steps per day per-day metrics low, medium, high-activity counts both groups. Step was each...
Background: Primary tarsometatarsal arthrosis is relatively uncommon. The etiology of osteoarthritis in the foot poorly understood, and it possible that mechanical or anatomic factors play a role. Methods: We compared relative length metatarsals patients with idiopathic midfoot group controls without arthrosis. analyzed radiographs all who had an arthrodesis first, second, third joints to treat during three-year period at tertiary teaching hospital. excluded history inflammatory arthritis,...
Between January 1988 and February 1995, 133 tethered spinal cord-release procedures in 88 consecutive patients were performed at our institution used to determine survivorship data for surgical release of cord. The diagnoses included dysraphism (67), achondroplasia(nine), isolated cord (nine), cerebral palsy (three), others(seven). Survivorship calculated the initial first-revision release. There was a 50% revision rate by 5 years after tethered-cord 57% 2 second Thirty-six excluded having...
Total ankle arthroplasty (TAA) continues to be investigated as a primary treatment for end-stage arthritis. The objective of this study is report mid- long-term results the Salto Talaris TAA using prospectively collected patient-reported outcomes and implant survival rates with 4- 13-year follow-up.
Abstract A technical feasibility study of a polymer-augmented waterflood process in San Francisco Field indicated that this enhanced oil recovery might be commercially feasible. Since the used hypothetical polymer properties, laboratory measurements specific available polymers were required. The experimental program was divided into three phases. screening to reduce number candidates. Basic fluid rheological data and quality developed. For each candidate, four concentrations different...
Category: Ankle Arthritis Introduction/Purpose: We used step counts as objective measures of activity a compliment to patient self-reported outcomes in treatment ankle arthritis validate success or failure treatment. Methods: 234 patients who were treated with arthrodesis replacement wore monitors before and after at 6 months, 12 24 months 36 months. Total steps taken well low, medium high activity, sustained an index measured each group. In addition, was compared the subjects’ outcome using...
Category: Ankle Arthritis Introduction/Purpose: Patients seeking surgical treatment for ESAA have two primary options: arthrodesis and arthroplasty. While there are comparative trials that address options, neither the complication risk or relative effectiveness is clearly established. The focus of this study was to report magnitude all AEs (as defined by DSMB) in peri operative early healing period after ankle surgery evaluate impact these on patient functional outcomes Methods: We data from...
Category: Ankle, Ankle Arthritis, Arthroscopy, Trauma Introduction/Purpose: We tested clinical equipoise in ankle arthrodesis and arthroplasty during a time of transition from older to newer generation implants using prospective cohort. Methods: performed cohort study comparing outcomes 273 consecutive patients treated for arthritis by or between 2005 2011. Adult Patients with end-stage arthritis, who were ambulatory willing able respond surveys included. excluded the if they had another...