A5007134323- Spine and Intervertebral Disc Pathology
- Spinal Fractures and Fixation Techniques
- Musculoskeletal pain and rehabilitation
- Medical Imaging and Analysis
- Orthopaedic implants and arthroplasty
- Shoulder Injury and Treatment
- Anesthesia and Pain Management
- Total Knee Arthroplasty Outcomes
- Cervical and Thoracic Myelopathy
- Scoliosis diagnosis and treatment
- Intraoperative Neuromonitoring and Anesthetic Effects
- Shoulder and Clavicle Injuries
- Sports injuries and prevention
- Orthopedic Infections and Treatments
- Microwave Engineering and Waveguides
- Peripheral Nerve Disorders
- Knee injuries and reconstruction techniques
- Spinal Hematomas and Complications
- Radio Frequency Integrated Circuit Design
- Cardiac, Anesthesia and Surgical Outcomes
- Hip disorders and treatments
- Pelvic and Acetabular Injuries
- Elbow and Forearm Trauma Treatment
- Orthopedic Surgery and Rehabilitation
- Occupational Health and Performance
University of Southern California
2015-2018
UCLA Medical Center
2012-2018
University of California, Los Angeles
2000-2017
Massachusetts Institute of Technology
2006
Harvard–MIT Division of Health Sciences and Technology
2006
Brigham and Women's Hospital
2006
Harvard University
2006
Oregon Health & Science University
1991
Retrospective database study.Low back and neck pain are among the top leading causes of disability worldwide. The aim our study was to report current trends on spine degenerative disorders their treatments.Patients diagnosed with lumbar or cervical conditions within orthopedic subset Medicare Humana databases (PearlDiver). From initial cohorts we identified subgroups based treatment: fusion nonoperative 1 year from diagnosis. Poisson regression used determine demographic differences in...
Vascular injury secondary to an acute knee dislocation is a known complication. However, there exist wide discrepancies in the reported rate of vascular this setting.Using large private insurance database, we determined frequency dislocations across year diagnosis, age, sex, and US geographic region proportion these injuries requiring surgical repair.The PearlDiver which contains records from 11 million orthopaedic patients, was searched using ICD-9 diagnostic codes for all events 2004 2009....
Treatment of patellofemoral instability has evolved as our understanding the relevant pathoanatomy improved. In light these developments, current practice patterns and management trends have likely changed to reflect advancements; however, this not been evaluated in a formal study.To determine nationwide patient demographics, surgical trends, postoperative complications associated with operative patellar surgery.Descriptive epidemiological study.A large private-payer database (PearlDiver)...
Background: Carpal tunnel release (CTR) is commonly performed for carpal syndrome once conservative treatment has failed. Operative technique and anesthetic modality vary by surgeon preference patient factors. However, CTR practices trends have, to date, not been described on a nationwide scale in the United States. Methods: The PearlDiver Patient Records Database was used search Current Procedural Terminology codes elective from 2007 2011. Anesthetic (eg, general regional anesthesia vs...
In Brief Study Design. Retrospective radiographical study. Objective. To define the relationship between grade of disc degeneration and motion lumbar spine by using kinetic magnetic resonance imaging. Summary Background Data. Disc is common after middle age. Lumbar instability has generally been recognized as a potential risk factor low back pain. However, correlations need more investigation. Methods. Kinetic imaging was performed in 162 patients with symptomatic pain without prior history...
The design of octave-bandwidth microstrip interdigital dc blocks is presented. Data for a 7.75- to 16.3-GHz are given and correlated with an approximate equivalent circuit based on even odd mode propagation in coupled microstrip. Additional data tabulated reflecting the ability shift frequency band operation.
Pre- and postoperative rehabilitation are important to the management of patients with anterior cruciate ligament (ACL) reconstruction, but little attention has been given costs. This study evaluated pre- charges in ACL reconstruction United States.Patients receive preoperative less commonly than rehabilitation.Retrospective database study.Level 4.Using PearlDiver database, we identified undergoing from 2007 through 2011 using Current Procedural Terminology codes. The associated billed...
A kinematic magnetic resonance imaging study.To investigate the distribution of Schmorl nodes (SNs) in lumbar spine healthy adults, and determine association with disk degeneration motion.SNs have been associated several pathologies spine, although it has demonstrated that they also occur adult population without a clearly identified cause. thorough understanding SN may help reveal reasons for their formation. How motion relate to SNs is poorly understood.Kinematic images (0.6 T) were...
Study Design: Retrospective review. Objective: The aim of our study was to quantify the frequency complications associated with recombinant human bone morphogenetic protein 2 (rhBMP-2) use in anterior lumbar interbody fusion (ALIF). Methods: orthopedic subset Medicare database (PearlDiver) queried for this retrospective cohort using International Statistical Classification Diseases 9 (ICD-9) and Current Procedure Terminology (CPT) codes ALIF procedures without rhBMP-2 between 2005 2010....
A retrospective case-control study.To investigate whether posterior cervical laminectomy and fusion modifies the natural course of anterior disk-osteophyte complex in patients with multilevel spondylotic myelopathy.Dorsal migration spinal cord is main purported mechanism decompression following but other potential mechanisms have received scant attention literature. This study was conducted to affects size complex.The medical records radiographic imaging 44 who underwent for myelopathy...
The purpose of this study was to investigate the latest trends and demographics surgical treatment posterior cruciate ligament (PCL) insufficiency in United States. Patients who underwent PCL from 2007 2011 were identified by searching International Classification Diseases, Ninth Revision, Clinical Modification codes Current Procedural Terminology PearlDiver Patient Records Database (PearlDiver Technologies, Warsaw, Indiana), a publicly available national database insurance records....
Study Design: Retrospective database review. Objective: Posterior/posterolateral lumbar fusion (PLF) is an effective treatment for a variety of spinal disorders; however, variations in surgical technique have different complication profiles. The aim our study was to quantify the frequency various complications patients undergoing PLF with and without human recombinant bone morphogenetic protein 2 (rhBMP2). Methods: We queried orthopedic subset Medicare (PearlDiver) between 2005 2011...
Retrospective case study.To evaluate the trends and demographics of recombinant human bone morphogenetic protein 2 (rhBMP2) utilization in single-level anterior lumbar interbody fusion (ALIF) United States.Patients who underwent ALIF from 2005 to 2011 were identified by searching ICD-9 diagnosis procedure codes PearlDiver Patient Records Database (PearlDiver Technologies, Fort Wayne, IN), a national database orthopedic insurance records. The year procedure, age, gender, region States...