A5033430780- Shoulder Injury and Treatment
- Knee injuries and reconstruction techniques
- Orthopedic Surgery and Rehabilitation
- Total Knee Arthroplasty Outcomes
- Tendon Structure and Treatment
- Sports injuries and prevention
- Hip disorders and treatments
- Orthopaedic implants and arthroplasty
- Elbow and Forearm Trauma Treatment
- Hip and Femur Fractures
- Bone health and treatments
- Foot and Ankle Surgery
- Lower Extremity Biomechanics and Pathologies
- Media, Gender, and Advertising
- Cruise Tourism Development and Management
- Botulinum Toxin and Related Neurological Disorders
- Bone Metabolism and Diseases
- Bone fractures and treatments
- Hereditary Neurological Disorders
- Digital Games and Media
- Shoulder and Clavicle Injuries
- Computational Geometry and Mesh Generation
- Astronomy and Astrophysical Research
- Trauma Management and Diagnosis
- Neurogenetic and Muscular Disorders Research
Orthopaedic Hospital
2024
Cedars-Sinai Medical Center
2017-2024
California University of Pennsylvania
2023
Cedars-Sinai Kerlan-Jobe Institute
2020-2022
Dalhousie University
2021
Toronto Metropolitan University
2021
Anna Needs Neuroblastoma Answers
2009
Background: To define the immunologic status of patients undergoing splenic embolization (SE) after traumatic injury. This information may lead to development immunization protocols based on scientific data. Methods: Patients with injury, treated at one level II Trauma Center were eligible for study. SE compared splenectomy (SP) and controls (C = blunt abdominal trauma negative computed tomography scans). Clinical examination, medical survey, blood sampling, nuclear medicine spleen scans...
Background: A hamstring autograft is commonly used in anterior cruciate ligament (ACL) reconstruction (ACLR); however, there evidence to suggest that the tendons harvested may contribute medial knee instability. Hypothesis: We tested hypothesis gracilis (G) and semitendinosus (ST) significantly sagittal, coronal, and/or rotational stability setting of ACLR with a concurrent partial collateral (MCL) injury. Study Design: Controlled laboratory study. Methods: Twelve human cadaveric knees were...
Background: Two popular physeal-sparing procedures used in the management of anterior cruciate ligament (ACL) injuries skeletally immature patients are iliotibial band (ITB) ACL reconstruction (ACLR) and all-epiphyseal (AE) ACLR. Although there has been concern for overconstraint lateral compartment knee with ITB ACLR technique, rotational stability, as provided by anterolateral (ALL) ACL, not assessed setting pediatric techniques. Our hypothesis is that AE ALL (ALLR) will best replicate...
Questions remain about whether circumferential labral reconstruction (CLR) using an iliotibial band (ITB) allograft can effectively restore the suction seal of hip.(1) CLR with ITB >6.5 mm would distractive stability force to that intact labrum. (2) achieve significantly superior compared <6.5 mm.Controlled laboratory study.A total 6 fresh-frozen pelves attached femurs (n = 12 matched hemipelves) from male donors were procured and dissected free all soft tissue, including hip capsule but...
PurposeTo determine the postsurgical strength and stiffness of anterior cruciate ligament (ACL) reconstructions with (ACLR-SA) without suture tape augmentation (ACLR) in a human cadaveric model.MethodsEight matched pairs knees were tested intact after bone-patellar tendon-bone ACL reconstruction. Specimens potted loaded onto mechanical testing system, an drawer force 88N was applied at 0°, 15°, 30°, 60°, 90° flexion. then to failure, clinical failure defined as translation greater than 10...
To quantify the amount of strain across an anterior cruciate ligament reconstruction (ACLR) before and after a lateral meniscus (LM) posterior root complex tear determine whether meniscal repair effectively protects ACLR against excessive strain.Fresh-frozen cadaveric knees were tested with 88-N drawer force internal external torque 5-Nm applied at 0°, 15°, 30°, 60°, 90° flexion. A simulated pivot shift was also 0, 15, 30° Rotation translation tibia, ACL graft recorded. Testing repeated for...
Abstract Active galactic nuclei (AGNs) are very powerful galaxies characterized by extremely bright emissions coming from their central massive black holes. Knowing the redshifts of AGNs provides us with an opportunity to determine distance investigate important astrophysical problems, such as evolution early stars and formation, along structure galaxies. The redshift determination is challenging because it requires detailed follow-up multiwavelength observations, often involving various...
Haglund's syndrome involves a prominent posterior superior prominence of the calcaneus. If nonoperative management fails, operative with calcaneoplasty is often needed. No study has assessed Achilles tendon pullout strength after an open for syndrome. The purpose this was to investigate those changes in cadaveric model and provide objective data upon which base postoperative recovery.Seven matched pairs specimens (mid-tibia toes) were divided into 2 cohorts: (1) intact/untreated (2)...
Replacement of lost cranial bone (partly mesodermal and partly neural crest-derived) is challenging includes the use nonviable allografts. To revitalize allografts, marrow-derived mesenchymal stromal cells (mesoderm-derived BM-MSCs) have been used with limited success. We hypothesize that coating allografts induced crest cell-mesenchymal progenitor (iNCC-MPCs) improves implant-to-bone integration in mouse defects. Human pluripotent stem were reprogramed from dermal fibroblasts,...
A common concern associated with elbow ulnar collateral ligament (UCL) reconstruction is the amount of time required for recovery and rehabilitation. For example, Major League Baseball pitchers, average to return competition ranges from 13.8 20.5 months. Suture tape augmentation has shown ability provide additional soft tissue stability across other joints in body. By providing an checkrein UCL while graft healing, it may be possible accelerate rehabilitation process overhead athletes thus...
Background: The gluteus minimus (GMin) and medius (GMed) are important dynamic stabilizers of the hip, but quantitative data on their biomechanical roles in stabilizing hip currently lacking. Purpose: To (1) establish a reproducible cadaveric model abductor complex (2) characterize effects loading GMin GMed extraneous femoral rotation distraction. Study Design: Controlled laboratory study. Methods: A total 10 hemipelvises were tested 4 muscle states: unloaded, loaded, (3) (4) both loaded....
Background: Calcaneoplasty is a common procedure performed for the management of Haglund’s syndrome when nonoperative fails. Midline tendon-splitting and endoscopy are 2 approaches to calcaneoplasty. Studies have suggested that an endoscopic approach may allow earlier return activity superior outcomes, but there no biomechanical or clinical studies validate these claims. The goal this study was quantify compare Achilles tendon pullout strength following midline calcaneoplasty in cadaveric...
Background: Although numerous techniques of reconstruction the medial ulnar collateral ligament (mUCL) have been described, limited evidence exists on biomechanical implication changing tunnel position despite fact that more recent literature has clarified footprint extends distally than was appreciated in past. Purpose: To evaluate size and location native assess valgus stability elbow after UCL at 3 locations. Study Design: Controlled laboratory study. Methods: Eighteen fresh-frozen...
Background: In Charcot-Marie-Tooth (CMT) disease, selective weakness of the tibialis anterior muscle often leads to recruitment long toe extensors as secondary dorsiflexors, with subsequent clawing toes. Extensor hallucis longus (EHL) and extensor digitorum (EDL) tendon transfers offer ability augment ankle dorsiflexion minimize claw deformity. The preferred site for transfer remains unknown. Our goal was quantify in “intact” native state, compared metatarsal necks or cuneiforms. We...
Objectives: To determine if the addition of an infraspinatus tenotomy to modified Judet approach (MJA) improves glenoid visualization. Methods: We performed MJA on 14 human cadaveric shoulders. After exposing glenoid, boundary visualized surface was marked with a 1.8- and 2.0-mm drill bit before after performing tenotomy, respectively. The humerus disarticulated, pre- post-tenotomy marks were verified. area entire each 4 quadrants [anterior-superior (AS), anterior-inferior (AI),...
Background: Contact between the acetabular labrum and articular cartilage of femoral head creates a suction seal that helps maintain stability in acetabulum. A osteochodroplasty may occasionally extend proximally into head, diminishing surface area available for sealing contact. Purpose: To determine whether proximal overresection decreases rotational distractive hip joint. Study Design: Controlled laboratory study. Methods: Six hemipelvises following conditions were tested: intact,...
Medial ulnar collateral ligament (mUCL) repair is growing in popularity as a treatment for younger athletes with mUCL tears. One of the most recent techniques utilizes collagen-coated suture tape to augment repair. The popular technique uses screw proximal fixation humerus. We present an alternative that suspensory humerus.To biomechanically compare elbow valgus stability and load failure novel reconstruction.Controlled laboratory study.Eighteen fresh-frozen cadaveric elbows were dissected...
Background: The flexor hallucis longus (FHL) and digitorum (FDL) tendons are commonly used for tendon transfer in reconstructive foot ankle procedures. Some patients experience great toe weakness loss of push-off strength. objective this biomechanical study was to quantify plantarflexion force after FHL FDL harvest correlate it variations crossover patterns at the knot Henry determine if specific have an increased tendency toward forefoot weakness. Methods: Simulated loads through Achilles,...