A5021730119- Nerve Injury and Rehabilitation
- Congenital limb and hand anomalies
- Orthopedic Surgery and Rehabilitation
- Trauma Management and Diagnosis
- Reconstructive Surgery and Microvascular Techniques
- Bone fractures and treatments
- Elbow and Forearm Trauma Treatment
- Cardiovascular Issues in Pregnancy
- Cardiac Structural Anomalies and Repair
- Neurogenetic and Muscular Disorders Research
- Hedgehog Signaling Pathway Studies
- Peripheral Nerve Disorders
- Dupuytren's Contracture and Treatments
- Congenital Anomalies and Fetal Surgery
- Prenatal Screening and Diagnostics
- Ethics and Legal Issues in Pediatric Healthcare
- Tendon Structure and Treatment
- Cerebral Palsy and Movement Disorders
- Reliability and Agreement in Measurement
- Genetic and rare skin diseases.
- Orthopedic Infections and Treatments
- Knee injuries and reconstruction techniques
- Maternal and Perinatal Health Interventions
- Assisted Reproductive Technology and Twin Pregnancy
- Global Health and Surgery
Shriners Hospitals for Children - Northern California
2017-2025
University of California, Davis
2019-2025
Community Link
2023
National Center for Advancing Translational Sciences
2023
Shriners Hospitals for Children - Erie
2019-2022
University of California Davis Medical Center
2020
Boston Children's Hospital
2019
University of Washington
2016-2017
Harborview Medical Center
2017
Washington University in St. Louis
2013-2016
Background: Magnetic resonance imaging (MRI) has not been routinely used for infants with brachial plexus birth injury (BPBI); instead, the decision to operate is based on trajectory of clinical recovery by 6 months age. The aim this study was develop an MRI protocol that can be performed without sedation or contrast in order identify who would benefit from surgery at earlier age than which could made clinically. Methods: This prospective multicenter NAPTIME (Non-Anesthetized Plexus...
Abstract Objective To investigate the association of maternal race/ethnicity with risk factors for brachial plexus birth injury (BPBI) and quantify proportion excess BPBI due to these factors. Study design This retrospective cohort study all livebirths occurring in California-licensed hospitals from 1996–2012 included 6,278,562 maternal-livebirth infant pairs 7762 diagnoses. Multiple logistic regression causal mediation analyses were used evaluate relationship Results Black Hispanic...
Limb lengthening by callotasis as described Ilizarov has become the standard method of lower extremity lengthening. Lengthening over an intramedullary nail to allow early removal external fixator also common in adults but few studies have addressed efficacy children.A retrospective review 37 consecutive children who had undergone femoral with was performed. Charts were reviewed for demographics, surgical details, and complications. Radiographs examined determine magnitude calculate index.The...
Abstract Upper extremity involvement in patients with arthrogryposis multiplex congentia is quite frequent. Treatment initially consists of stretching and splinting as significant gains can be seen the first years life. The goal any surgical procedure to improve upper function performance daily living activities, yet it important treat each patient individually understand that areas do not always need addressed surgically. Despite overall lower functioning scores this population, quality...
Background: Shoulder external rotation recovery in brachial plexus birth injury is often limited. Nerve grafting to the suprascapular nerve and transfer of spinal accessory are commonly performed restore shoulder rotation, but optimal surgical technique has not been clearly demonstrated. We investigated whether there was a difference between terms or secondary procedures. Methods: This multicenter, retrospective cohort study 145 infants with who underwent reconstruction (n = 59) 86) minimum...
While prior research provided thorough analysis of the epidemiology brachial plexus birth injury (BPBI) from 1997 to 2012, recent trends are unknown. The goal this study was update understanding and risk factors for BPBI.
Patient-reported Outcomes Measurement Information System (PROMIS) for pediatrics is a validated patient-reported or parent-proxy-reported outcomes assessment tool used to evaluate health-related quality of life in children and adolescents with chronic medical conditions. The brachial plexus birth injury (BPBI) as measured by PROMIS not well understood. We hypothesized that BPBI would report impaired upper extremity (UE) function but normal mobility, pain interference, peer relationships...
Background: Tibialis posterior tendon dysfunction is a common disorder leading to pain, deformity, and disability, although its pathogenesis unclear. A vascular etiology has been proposed, but there controversy regarding the existence of hypovascular region that may render vulnerable. The purpose this study was provide description arterial anatomy supplying tibialis tendon. Methods: Sixty adult cadaveric lower extremities were obtained from university-affiliated body donation program. Thirty...
Background: Infants with brachial plexus birth injury who do not recover motor function spontaneously in a timely manner are candidates for reconstruction nerve autograft. Outcomes of this intervention incompletely understood. The authors present the long-term outcomes sural autograft infants injury. Methods: retrospectively reviewed all underwent between 1992 and 2014 minimum 2-year follow-up. used Active Movement Scale scores to determine presence timing shoulder, elbow, wrist recovery....
Background: Both vascular and compression etiologies have been proposed as the source of neurologic symptoms in tarsal tunnel syndrome. Advancing understanding arterial anatomy supplying posterior tibial nerve (PTN) its branches may provide insight into cause symptoms. The purpose this study was to describe PTN branches. Methods: Sixty adult cadaveric lower extremities (thirty previously frozen thirty fresh specimens) were amputated distal knee. supply identified, measured, described...
OBJECTIVES/GOALS: To evaluate the incidence of brachial plexus birth injury (BPBI) and its associations with maternal demographic factors. Additionally, we sought to determine whether longitudinal changes in BPBI differed by demographics. METHODS/STUDY POPULATION: We conducted a retrospective cohort study over 8 million maternal-infant pairs using California’s Office Statewide Health Planning Development Linked Birth Files from 1991-2012. Descriptive statistics were used prevalence factors...
This study aimed to evaluate the incidence of brachial plexus birth injury (BPBI) and its associations with maternal demographic factors. Additionally, we sought determine whether longitudinal changes in BPBI differed by demographics.
The anatomy of the scapholunate interosseous ligament (SLIL) has been described qualitatively in great detail, with recognition dorsal component's importance for carpal stability. purpose this study was to define quantitative SLIL and assess use high-frequency ultrasound image SLIL.We used imaging evaluate 40 wrists 20 volunteers recorded radial-ulnar (length) dorsal-volar (thickness) dimensions interval. We assessed by comparing length thickness on evaluation open dissection 12 cadaveric...
OBJECTIVE: To evaluate the association of maternal delivery history with a brachial plexus birth injury risk in subsequent deliveries and to estimate effect method on risk. METHODS: We conducted retrospective cohort study all live-birth occurring California-licensed hospitals from 1996 2012. The primary outcome was recurrent pregnancy. exposure (parity, shoulder dystocia previous delivery, or previously delivering neonate injury). Multiple logistic regression used model adjusted associations...
Recent reports have demonstrated that nearly two-thirds of the world's population do not access to adequate surgical care, a burden is borne disproportionately by residents resource-poor countries. Although reasons for limited care are complex and multi-factorial, among most substantial barriers lack trained providers. This particularly true in subspecialties focus on life-improving, rather than life-saving, treatments, such as pediatric hand upper extremity surgery, which manages conditions...
Risk factors for congenital upper limb differences (CoULDs) are often studied at the general population level. The CoULD registry provides a unique opportunity to study prenatal risk within large patient sample.All patients enrolled between June 2014 and March 2020 in prospective registry, national multicenter database of diagnosed with CoULD, were included analysis. We analyzed self-reported, factors, including maternal smoking, alcohol use, recreational drug prescription gestational...
Constriction band syndrome (CBS) is a congenital limb anomaly with varying presentation. We sought to characterize the clinical manifestations of CBS by analyzing large cohort patients. Our secondary aim was evaluate potential risk factors for CBS.We retrospectively reviewed records all patients who had presented our tertiary medical center between 1998 and 2018. Examination pediatric orthopaedic surgeon presence pathognomonic features were inclusion criteria. Clinical notes, photographs,...