A5011278898- Knee injuries and reconstruction techniques
- Total Knee Arthroplasty Outcomes
- Shoulder Injury and Treatment
- Sports injuries and prevention
- Adhesion, Friction, and Surface Interactions
- Lower Extremity Biomechanics and Pathologies
- Orthopedic Surgery and Rehabilitation
- Osteoarthritis Treatment and Mechanisms
- Shoulder and Clavicle Injuries
- Tendon Structure and Treatment
- Musculoskeletal Disorders and Rehabilitation
- Orthopaedic implants and arthroplasty
- Anesthesia and Pain Management
- Muscle activation and electromyography studies
- Diversity and Career in Medicine
- Nerve Injury and Rehabilitation
- Cardiac, Anesthesia and Surgical Outcomes
- Bone fractures and treatments
- Reconstructive Surgery and Microvascular Techniques
- Innovations in Medical Education
- Advanced Fiber Optic Sensors
- Health and Medical Research Impacts
- Musculoskeletal synovial abnormalities and treatments
- Periodontal Regeneration and Treatments
- Cardiovascular Effects of Exercise
The University of Texas Health Science Center at Houston
2016-2024
Vanderbilt University
2024
University of Pittsburgh
2009-2023
Slocum Research and Education Foundation
2019-2022
Brown University
2022
Vanderbilt University Medical Center
2017-2021
Greater Pittsburgh Orthopaedic Associates
2021
Memorial Hermann
2020
University of California, San Francisco
2017
The Ohio State University Wexner Medical Center
2017
A committee of international knee experts created the International Knee Documentation Committee Subjective Form, which is a knee-specific, rather than disease-specific, measure symptoms, function, and sports activity. The purpose this study was to evaluate reliability validity new Form. To provide evidence for validity, we administered final version form, along with Short Form-36, 533 patients variety problems. Analyses were performed determine reliability, differential item function...
Tears of the posterior root medial meniscus are becoming increasingly recognized. They can cause rapidly progressive arthritis, yet their biomechanical effects not understood. The goal this study was to determine tears and repairs on tibiofemoral joint contact pressure kinematics.Nine fresh-frozen cadaver knees were used. An axial load 1000 N applied with a custom testing jig at each four knee-flexion angles: 0 degrees, 30 60 90 degrees. otherwise unconstrained. Four conditions tested: (1)...
Purpose To determine the effects of increasing anterior-posterior (A-P) tibial slope on knee kinematics and in situ forces cruciate ligaments. Methods Ten cadaveric knees were studied using a robotic testing system three loading conditions: (1) 200 N axial compression; (2) 134 A-P load; (3) combined loads. Resulting determined before after 5-mm anterior opening wedge osteotomy. each ligament determined. Results Tibial was increased from 8.8 ± 1.8 ° to 13.2 2.1 °, causing an shift resting...
The purpose of the present study was to demonstrate reliability, validity, and responsiveness Activities Daily Living Scale Knee Outcome Survey, a patient-reported measure functional limitations imposed by pathological disorders impairments knee during activities daily living. comprised 397 patients; 213 were male, 156 female, gender not recorded for remaining twenty-eight. mean age patients 33.3 years (range, twelve seventy-six years). referred physical therapy because wide variety knee,...
The authors conducted a study to determine if the long head of biceps muscle and its attachment at superior glenoid labrum play role in stability shoulder an overhead position. Their used dynamic cadaveric model that simulated forces rotator cuff muscles as glenohumeral joint was abducted externally rotated. data suggest contributes anterior by increasing shoulder's re sistance torsional vulnerable rotated also helps diminish stress placed on inferior gle nohumeral ligament. Detachment noid...
We did a retrospective review and follow-up examination to investigate the incidence, risk factors, outcome of patients who developed loss motion after arthroscopic anterior cruciate ligament reconstruction. Two hundred forty-four with minimum followup 1 year were reviewed. Loss (defined as extension more than 10 degrees or flexion less 125 degrees) was identified in 27 for an overall incidence 11.1%. Factors associated included acute reconstruction (less month from initial injury), male...
The International Knee Documentation Committee Subjective Form was developed to measure change in symptoms, function, and sports activity patients treated for a variety of knee conditions. Although previous research has demonstrated reliability validity the form, its responsiveness not been evaluated. purpose this study determine Form.Cohort (diagnosis); Level evidence, 1.Patients who participated original validation completed form 7-level global rating scale that ranged from greatly worse...
Recent advances in diagnosis and instrumentation have facilitated the arthroscopic treatment of hip pathology. However, little has been reported on trends utilization arthroscopy. The purpose this study was to examine changes use arthroscopy as reflected American Board Orthopaedic Surgery (ABOS) database. We also surveyed directors both sports joint reconstruction fellowships determine attitudes toward training.The number cases ABOS database during 1999 through 2009 determined. A survey...
The evaluation and management of knee dislocations remain variable controversial. purpose this study was to describe our method surgical treatment with use a standardized protocol report the clinical results.Forty-seven consecutive patients presented an occult (reduced) or grossly dislocated knee. Fourteen these were not included in series because confounding variables: four had open dislocation, five vascular injury requiring repair, three treated external fixation, two associated injury....
Background: Most surgeons believe that graft choice for anterior cruciate ligament (ACL) reconstruction is an important factor related to outcome; however, revision may be limited due previously used grafts. Hypotheses: Autograft use would result in increased sports function, activity level, and decreased osteoarthritis symptoms (as measured by validated patient-reported outcome instruments). failure reoperation rate 2 years after ACL reconstruction. Study Design: Cohort study; Level of...
Background: Evidence suggests that single-bundle anterior cruciate ligament (ACL) reconstruction does not reliably prevent the development of knee osteoarthritis (OA). Purpose: This study was conducted to determine overall prevalence and risk factors for radiographic OA after ACL reconstruction. Study Design: Case control study; Level evidence, 3. Methods: There were 249 individuals who had undergone primary included in this retrospective cohort study. Follow-up radiographs scored by a...
Background: Knee arthroscopies are among the most common procedures performed by orthopaedic surgeons, yet little is known about associated complications and complication rates. Purpose: To examine nature frequency of after arthroscopic knee procedures, with particular attention to fellowship training, geographic location practice, age sex patient. Study Design: Cross-sectional study; Level evidence, 3. Methods: Data were obtained from American Board Orthopaedic Surgery database for surgeons...
To study the structural and functional properties of human posterior cruciate ligament complex, we meas ured cross-sectional shape area anterior cruciate, meniscofemoral liga ments in eight cadaveric knees. The increased from tibia to femur, de creased femur. did not change their course lateral meniscus femoral insertions. pos terior was ap proximately 50% 20% greater than that an at femur tibia, respectively. ligaments averaged approximately 22% entire ligament. insertion sites were evalu...
The objective of this study was to experimentally evaluate a single-bundle versus double-bundle posterior cruciate ligament reconstruction by comparing the resulting knee biomechanics with those intact knee. Ten human cadaveric knees were tested using robotic/universal force-moment sensor testing system. subjected 134-N tibial load at five flexion angles. Three conditions tested: 1) knee, 2) reconstruction, and 3) reconstruction. Posterior translation ranged from 4.9 +/- 2.7 mm 90 degrees...
We hypothesized that posterior cruciate ligament reconstructions are often compromised by associated injuries to the posterolateral structures. Therefore, we evaluated a reconstruction in isolated and combined injury models using robotic/ universal force-moment sensor testing system. The resulting knee kinematics situ forces native reconstructed were determined under four external loading conditions. In model, reduced tibial translation within 1.5 1.3 2.4 1.4 mm of intact at 30° 90° 134-N...
Sixty-four patients whose knees underwent anterior cruciate ligament reconstruction with nonirradiated allograft tissue were compared 26 ligaments reconstructed using autograft 3 to 5 years after their operation. Detailed symptoms, activity-level, and functional outcomes, physical examination, instrumented knee testing recorded. No statistically significant differences found except a higher incidence of loss terminal extension in the group. These small not considered clinically significant....
Twenty-five patients who underwent revision anterior cruciate ligament reconstruction after failure of a previous intraarticular were retrospectively reviewed. Before revision, all reported functional instability with sports or activities daily living and exhibited increased patholaxity on physical examination. Fresh frozen irradiated allograft tissue was used for revisions. A comprehensive knee analysis using subjective objective system done preoperatively at the time final followup. The...
Tears of the posterior root medial meniscus are becoming increasingly recognized. They can cause rapidly progressive arthritis, yet their biomechanical effects not understood. The goal this study was to determine tears and repairs on tibiofemoral joint contact pressure kinematics.Nine fresh-frozen cadaver knees were used. An axial load 1000 N applied with a custom testing jig at each four knee-flexion angles: 0 degrees , 30 60 90 . otherwise unconstrained. Four conditions tested: (1) intact,...
Revision ACL surgery has become increasingly common. Successful revision requires a thorough preoperative evaluation, including detailed history and physical radiographic examination. Preoperative planning is imperative for successful outcome, as it limits the potential repeating errors that led to failure of primary procedure. This begins with determination mechanism failure. Often, well secondary cause can be identified. Determination etiology first step in carefully constructed treatment...