A5101442676- Foot and Ankle Surgery
- Orthopedic Surgery and Rehabilitation
- Tendon Structure and Treatment
- Lower Extremity Biomechanics and Pathologies
- Musculoskeletal synovial abnormalities and treatments
- Sports injuries and prevention
- Bone fractures and treatments
- Total Knee Arthroplasty Outcomes
- Knee injuries and reconstruction techniques
- Organ Transplantation Techniques and Outcomes
- Abdominal vascular conditions and treatments
- Liver Disease and Transplantation
- Nail Diseases and Treatments
- Peripheral Nerve Disorders
- Diabetic Foot Ulcer Assessment and Management
- Healthcare Systems and Public Health
- Textile materials and evaluations
University of Minnesota
2006-2023
TRIA Orthopaedic Center
2019-2020
University of Minnesota Medical Center
2013
Twin Cities Orthopedics
2009
Background: Recently, arthroscopic-assisted techniques have been described to treat lateral ankle instability with excellent results. However, complications including neuritis of the superficial peroneal or sural nerve, and pain discomfort due a prominent anchor suture knot reported. The aim this study was describe novel technique, “all-inside arthroscopic collateral ligament repair,” its results for treating patients instability. Methods: Sixteen (10 men 6 women, mean age 29.3 years, 17-46)...
Because of the good initial fixation strength interfer ence screws used in anterior cruciate ligament recon struction, metal interference have become standard method for bone-patellar tendon- bone grafts. To avoid some complications with screws, a bioabsorbable screw was developed. Data on older human cadavers indicate similar failure between and screws. We studied fail ure mechanisms, insertion torques, strengths absorbable cadaveric knees from young middle-aged do nors. With identical gap...
We wanted to use biomechanical testing in a cadaveric model compare the Broström repair, Watson- Jones reconstruction, and new anatomic reconstruc tion method. Eight specimens were held specially designed apparatus which ankle position (dorsiflexion-plantar flexion supination-pronation) could be varied controlled manner. Testing was done with intact ligaments repeated after sectioning of anterior talofibular ligament calcaneofibular Watson-Jones re construction performed. An drawer test...
We analyzed the changes in lateral ligament forces during anterior drawer and talar tilt testing examined ankle joint motion testing, following an isolated lesion of talofibular (ATFL) or a combined ATFL calcaneofibular (CFL). 8 cadaver specimens were held specially designed apparatus which position (dorsiflexion-plantarflexion supination-pronation) could be varied controlled manner. Ligament measured with buckle transducers, was instrumented spatial linkage. An test performed using 80 N...
Background Little information is available on the American Orthopaedic Foot and Ankle Society (AOFAS) outcome tool its capacity to show changes improvement in function of patients without a floor or ceiling effect. The purpose study was compare results from Musculoskeletal Functional Assessment (MFA) AOFAS tools population undergoing total ankle replacement. Methods Prospective data collected 154 preoperatively at 6, 12, 24 months after surgery. An analysis performed between both within each...
Ankle instability is a common consequence of ankle sprains. Injury the anterior talofibular ligament (ATFL) most cause instability1. Arthroscopic treatment an emerging field attracting increased interest among surgeons2-10. The arthroscopic all-inside ATFL repair allows surgeon to explore joint, treat concomitant pathology when encountered, and reattach injured its fibular anatomical location. aim this article describe through 3-portal no-ankle-distraction technique.After patient...
This study investigated the association of arch height combined with first metatarsal joint axis vertical (V) orientation to size 1-2 intermetatarsal angle (IMA) and adduction/abduction position simulating foot postures during gait, kinematics commonly affected by bunion.Nine cadaver specimens were mounted in a loading frame. Measures ratio IMA made. With placed positions seen normal gait cycle an electromagnetic device measured displacement relative rotations between navicular, helical (HA)...
The first ray plays a role in the development of bunion foot deformity, but for unknown reasons. This prospective, cross-sectional study investigated kinematics women with rheumatoid arthritis (RA) and bunion.Nine participants having RA-bunion were analyzed comparison to control group (n = 10). Data acquired using magnetic resonance scanner. Conditions standardized simulate gait midstance, heel off, terminal stance. Foot posture (hallux angle, intermetatarsal arch calcaneus angle) relative...
Background Although not well understood, foot kinematics are changed with hallux valgus. Objective The purpose of this study was to examine tarsal in women valgus deformity. Design A prospective, cross-sectional design used. Methods Twenty (n=10) and without deformity participated. Data were acquired the use a magnetic resonance scanner. Participants posed standing simulate gait, images reconstructed into virtual bone datasets. Measures taken described posture (hallux angle, intermetatarsal...
There currently are no recommended standards for reporting kinematics of the first-metatarsophalangeal joint. This study compared 2 different rotation sequences Cardan angles, with implications understanding measurement hallux valgus deformity.Thirty-one women (19 valgus; 12 controls) participated. All were scanned in an open-upright magnetic resonance scanner, their foot posed to simulate gait conditions midstance, heel-off, and terminal stance. Using computer processes, selected tarsals...
The growing popularity of minimally invasive surgical (MIS) procedures makes it necessary that new anatomical references arise, to aid in tridimensional orientation and localization structures are not directly visible the surgeon. This is especially critical for at risk like nerves or blood vessels. Optimization handling cadaveric material combination multiple techniques compensate limited availability adequate specimens. described protocol combines plane-by-plane dissection sectional...
Background: The clinical significance of foot and ankle bone marrow edema (BME) is poorly understood. Methods: Magnetic resonance imaging (MRI) the visual analog scale (VAS) pain scores were collected for 17 runners who participated in Twin Cities Marathon, immediately postmarathon at a 6-week follow-up. Bone lesions classified using lesion frequency, anatomical location, grading change to calculate BME score each affected bone. Spearman rank correlation coefficient test was used identify...
Background: Lisfranc joint complex injury may be managed surgically by either an open reduction internal fixation (ORIF) or primary arthrodesis (PA). Published literature advocates PA for purely ligamentous injuries, but many surgeons in actuality refrain from performing PA. The purpose of the study is to assess surgeon practices and behavior managing injuries due influence peer reviewed with help American Board Orthopaedic Surgery (ABOS) database. Methods: Data were requested ABOS database...