- Total Knee Arthroplasty Outcomes
- Knee injuries and reconstruction techniques
- Lower Extremity Biomechanics and Pathologies
- Sports injuries and prevention
- Shoulder Injury and Treatment
- Orthopaedic implants and arthroplasty
- Orthopedic Surgery and Rehabilitation
- Foot and Ankle Surgery
- Tendon Structure and Treatment
- Spine and Intervertebral Disc Pathology
- Orthopedic Infections and Treatments
- Bone fractures and treatments
- Hip disorders and treatments
- Spinal Fractures and Fixation Techniques
- Shoulder and Clavicle Injuries
- Traumatic Brain Injury Research
- Traumatic Brain Injury and Neurovascular Disturbances
- Hip and Femur Fractures
- Osteoarthritis Treatment and Mechanisms
- Sports Performance and Training
- Bone health and osteoporosis research
- Diversity and Career in Medicine
- Sleep and Wakefulness Research
- Diabetic Foot Ulcer Assessment and Management
- Bone and Joint Diseases
Hospital for Special Surgery
2016-2025
Cornell University
2013-2023
University of California, Los Angeles
2022-2023
Chang Gung Memorial Hospital
2023
Creative Commons
2023
San Diego State University
2022
McGill University Health Centre
2022
Jewish General Hospital
2022
Hamad Medical Corporation
2022
Oregon Health & Science University
2018-2022
Background: Surgical site infection in the spine is a serious postoperative complication. Factors such as posterior surgical approach, arthrodesis, use of spinal instrumentation, age, obesity, diabetes, tobacco use, operating-room environment, and estimated blood loss are well established literature to affect risk infection. The goal this study was analyze identify independent factors for among patients undergoing lumbar instrumented arthrodesis. Methods: medical records 3218 who underwent...
Abstract Objective To determine whether single injections of autologous platelet‐rich plasma (PRP) into symptomatic degenerative intervertebral disks will improve participant‐reported pain and function. Design Prospective, double‐blind, randomized controlled study. Setting Outpatient physiatric spine practice. Participants Adults with chronic (≥6 months), moderate‐to‐severe lumbar diskogenic that was unresponsive to conservative treatment. Methods were receive intradiskal PRP or contrast...
The American Shoulder and Elbow Surgeons (ASES) questionnaire was developed to provide a standardized method for evaluating shoulder function. Previous studies have determined the clinical responsiveness of this outcome measure heterogenous populations or patients with nonoperatively treated rotator cuff disease. Currently, our knowledge, no exist that establish clinically relevant change in ASES score after arthroplasty.We asked: (1) What are minimal important difference (MCID) substantial...
Abstract Reduction of bone turnover with bisphosphonate treatment alters mineral and matrix properties. Our objective was to investigate the effect on tissue properties near fragility fracture sites in proximal femur postmenopausal women osteoporosis. The collagen corticocancellous biopsies from were compared bisphosphonate-naive (−BIS, n = 20) bisphosphonate-treated (+BIS, 20, duration 7 ± 5 years) patients intertrochanteric (IT) subtrochanteric (ST) fractures using Fourier transform...
Vitamin D is essential for optimal bone health and muscle function. An alarmingly high rate of vitamin-D deficiency in the general population has been reported recently. The purpose present study was to characterize extent low serum levels vitamin among orthopaedic surgery patients.We performed a retrospective chart review 723 patients who were scheduled between January 2007 March 2008. Preoperative 25-hydroxyvitamin (25[OH]D) measured. prevalence normal (≥32 ng/mL), insufficient (<32...
Retrospective cross-sectional study.Determine if pre-operative cervical alignment serves as an independent predictor of disability measured by the neck index (NDI).There is growing interest in relationship between sagittal and clinical outcomes. While prior studies have shown that C2-C7 vertical axis (SVA) correlates with worse NDI scores post-operative patients, no to date examined impact parameters on patients indicated for surgery.Patients standing radiographs, spine procedures a score...
The purpose of this study was to investigate whether platelet-rich plasma therapy for early knee osteoarthritis is associated with good clinical outcomes and a change in magnetic resonance imaging (MRI) structural appearances. design prospective cohort following patients 1 year after osteoarthritis. Twenty-two were treated osteoarthritis, confirmed baseline MRI. Inclusion criteria Kellgren grade 0-II pain aged 30 70 years. All the received 6-mL injection using Cascade system. Fifteen...
Background: It is unclear which patients with recurrent patellar instability require a bony procedure in addition to medial patellofemoral ligament (MPFL) reconstruction. Purpose: To report 1- and 2-year outcomes of after isolated MPFL reconstruction performed for regardless height, tibial tubercle–trochlear groove (TT-TG) distance, or trochlear dysplasia. Study Design: Case series; Level evidence, 4. Methods: All without significant unloadable chondral defects (Outerbridge grade IV),...
Background: Medial patellofemoral ligament (MPFL) reconstruction has become one of the most common and widely used procedures to regain stability among patients with recurrent lateral patellar dislocation. While recent studies demonstrated low recurrence rates, improved patient-reported outcome measures, a high rate return sports, limited literature explored its effectiveness as an isolated intervention in context trochlear dysplasia. Purpose: To determine efficacy MPFL treating instability...
Background: Anterior cruciate ligament (ACL) and meniscus injuries are common in female athletes participating cutting pivoting sports such as basketball. The epidemiological characteristics of injury seen at the Women’s National Basketball Association (WNBA) combine effect ACL reconstruction surgery on longevity WNBA unknown. Purpose: To evaluate details spectrum entering to assess potential specific round drafted into career length. Study Design: Descriptive epidemiology study. Methods:...
Background: The indications for reverse total shoulder arthroplasty (RTSA) continue to expand, which has resulted in younger patients who want remain active after RTSA. Little information is available manage expectations of both physicians and return sporting activities. Purpose: To determine the rate activities assess average time sports Study Design: Case series; Level evidence, 4. Methods: This was a retrospective review consecutive RTSA collected from our institution’s registry. All...
Prior studies in other specialties have shown that social networking and Internet usage has become an increasingly important means of patient communication referral. The purpose this study is to evaluate the prevalence or media new patients referred a major academic orthopedics center identify avenues optimize recruitment communication. New were surveyed (n=752) between December 2012 January 2013 orthopedic complete 15-item questionnaire including information. Data was collected for all...
Background Race is an important predictor of TKA outcomes in the United States; however, analyses race can be confounded by socioeconomic factors, which result difficulty determining root cause disparate after TKA. Questions/purposes We asked: (1) Are and factors at individual level associated with patient-reported pain function 2 years TKA? (2) What interaction between community poverty Methods identified all patients undergoing enrolled a hospital-based registry 2007 2011 who provided...
Patellar fractures are debilitating injuries that compromise the knee extensor mechanism and frequently associated with poor outcomes. The purpose of this study was to quantify functional outcomes operative treatment patellar fractures.Functional outcome data on thirty patients an isolated unilateral fracture were prospectively obtained at three, six, twelve months postoperatively.All healed. There two complications (7%) related surgery (wound dehiscence refracture), eleven (37%) underwent...
Background: Abnormal tibiofemoral contact stress and aberrant kinematics may influence the progression of osteoarthritis in anterior cruciate ligament (ACL)–deficient ACL-reconstructed knee. However, relationships between after ACL reconstruction are poorly understood. Therefore, we posed following research questions: (1) How do deficiency affect joint? (2) What kinematic differences associated with abnormal reconstruction? Hypothesis: Center-center will not restore knee stress. Correlations...
To determine the sensitivity and specificity of lamellated hyperintense synovitis for infection following knee arthroplasty to inter- intraobserver variability this sign at magnetic resonance (MR) imaging.The purpose retrospective case control study was approved by hospital's institutional review board. MR images from 28 patients with proved infected total noninfected were reviewed two musculoskeletal radiologists presence synovitis. Cases rereviewed 2 weeks later each reader. The calculated...
Patients with chronic exertional compartment syndrome who have failed nonoperative treatment are evaluated pre-exertion and postexertion pressure testing may be treated fasciotomy. Failure rates of up to 20% been reported related factors such as age, sex, pressures, compartment(s) released, duration symptoms.Higher preoperative pressures correlated higher success patient satisfaction after fasciotomy.Cohort study; Level evidence, 3.From 1999 2008, patients clinical symptoms management...
The purpose of our study was to describe and compare extensor mechanism injuries with regard age, sex, body mass index (BMI), comorbidities.We identified patients who had undergone surgical management an injury at two institutions between 1986 2012. Data analyzed included age the time surgery, height, weight, presence medical comorbidities. Patients chronic disruption quadriceps or patellar tendon, those undergoing revision in setting total knee arthroplasty were excluded.Seven hundred...