Emma E. Johnson

ORCID: 0000-0003-0390-2301
Publications
Citations
Views
---
Saved
---
About
Contact & Profiles
Research Areas
  • Sports injuries and prevention
  • Shoulder Injury and Treatment
  • Knee injuries and reconstruction techniques
  • Lower Extremity Biomechanics and Pathologies
  • Total Knee Arthroplasty Outcomes
  • Orthopedic Surgery and Rehabilitation
  • Marine Bivalve and Aquaculture Studies
  • Elbow and Forearm Trauma Treatment
  • Cardiovascular Effects of Exercise
  • Anesthesia and Pain Management
  • Tendon Structure and Treatment
  • Opioid Use Disorder Treatment
  • Hip disorders and treatments
  • Osteoarthritis Treatment and Mechanisms
  • Orthopaedic implants and arthroplasty
  • Shoulder and Clavicle Injuries
  • Marine and fisheries research
  • Intramuscular injections and effects
  • Cardiac Arrest and Resuscitation
  • Ocean Acidification Effects and Responses
  • Pneumothorax, Barotrauma, Emphysema
  • Peripheral Neuropathies and Disorders
  • Injury Epidemiology and Prevention
  • Treatment of Major Depression
  • Pain Management and Opioid Use

Rothman Orthopaedics
2022-2025

Thomas Jefferson University
2022-2024

Rothman Institute
2022-2024

Hope College
2023

Jefferson University Hospitals
2022-2023

Thomas Jefferson University Hospital
2022-2023

Northwestern Medicine
2023

Georgetown University Medical Center
2023

Georgetown University
2023

University of Portsmouth
2020

Abstract Foundation species enhance biodiversity and multifunctionality across many systems; however, whether foundation patch configuration mediates their ecological effects is unknown. In a 6‐month field experiment, we test which attributes of – i.e. size, total area, perimeter, area‐perimeter ratio, or connectivity control biodiversity, stability by adding standardised density mussel in patches 1, 5, 10, 30, 60, 90 180 individuals to southeastern US salt marsh. Over 67% response variables...

10.1111/ele.13146 article EN cc-by Ecology Letters 2018-08-23

Ruptures of the quadriceps tendon present most frequently in older adults and individuals with underlying medical conditions.

10.1177/23259671241229105 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2024-02-01

Background: There is evidence to suggest that the midbrain periaqueductal grey (PAG) has a role in migraine and actions of anti-migraine drug sumatriptan. In present study we examined serotonergic modulation GABAergic glutamatergic synaptic transmission rat PAG slices vitro. Results: Serotonin (5-hydroxytriptamine, 5-HT, IC 50 = 142 nM) selective serotonin reuptake inhibitor fluoxetine (30 μM) produced reduction amplitude GABA A -mediated evoked inhibitory postsynaptic currents (IPSCs) all...

10.1186/1744-8069-4-54 article EN Molecular Pain 2008-01-01

Background: Ulnar collateral ligament (UCL)reconstruction (UCLR) has transformed UCL injury from career-ending to career-interruptive. The most common surgical techniques are the modified Jobe and docking techniques. Purpose/Hypothesis: purpose of this study was perform a prospective, randomized comparison versus in overhead athletes with respect patient-reported outcomes (PROs), self-reported baseball-specific metrics, imaging, complications. It hypothesized that there would be no...

10.1177/03635465241305741 article EN The American Journal of Sports Medicine 2025-02-01

Injury to the quadriceps tendon is rare and most commonly occurs in middle-aged men. Few reports are available regarding outcomes after rupture younger patients.To review clinical of patients who underwent repair at age ≤40 years. We hypothesized that this cohort would experience better comparison historical older controls.Case series; Level evidence, 4.Using an institutional database, we retrospectively identified between January 2009 December 2017. Patients were included study if they aged...

10.1177/23259671221097107 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2022-05-01

Abundance of the commercially and ecologically important Eastern oyster, Crassostrea virginica, has declined across US Gulf coasts in recent decades, spurring substantial efforts to restore oyster reefs. These are widely constrained by availability, cost, suitability substrates support settlement reef establishment. In particular, shell is often preferred substrate but relatively scarce increasingly expensive. Thus, there a need for alternative restoration materials that cost-effective,...

10.7717/peerj.6488 article EN cc-by PeerJ 2019-02-25

Abstract Populations of the European flat oyster Ostrea edulis have experienced catastrophic declines across Europe and subsequent spread non‐native species Crepidula fornicata has led to its occurrence in exceptionally high densities some areas previously dominated by O. . Spatial temporal concurrence C. larvae within zooplankton community occurs throughout spawning season. A larval peak density 374.7 ± 96.5 larvae/ml (mean SD) was observed Langston Harbour sympatrically with 45.7 20.1...

10.1002/aqc.3446 article EN cc-by Aquatic Conservation Marine and Freshwater Ecosystems 2020-10-04

PurposeThe purpose of this study was to determine whether a preoperative Caton-Deschamps index (CDI) ≥ 1.30, as measured by magnetic resonance imaging, is associated with rates postoperative instability, revision knee surgery, and patient-reported outcomes in patients undergoing isolated medial patellofemoral ligament (MPFL) reconstruction.MethodsPatients who underwent primary reconstruction (MPFLR) between 2015 2019 at single institution were assessed. Only those least 2 year follow up...

10.1016/j.asmr.2023.02.006 article EN cc-by-nc-nd Arthroscopy Sports Medicine and Rehabilitation 2023-03-11

Background: Although several studies have noted that patients are routinely overprescribed opioids, few reported usage after arthroscopic surgery. Purpose: To determine opioid consumption and allocation for unused opioids common surgeries. Study Design: Case series; Level of evidence, 4. Methods: Patients between the ages 15 40 years who were scheduled to undergo anterior cruciate ligament reconstruction (ACLR), labral repair hip or shoulder, meniscectomy, meniscal prospectively enrolled....

10.1177/23259671241249688 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2024-05-01

Background: Injury of the ulnar collateral ligament (UCL) has become increasingly common, particularly in overhead athletes. There is no consensus on management nerve UCL reconstruction (UCLR) patients with preoperative symptoms, as literature supports both not decompressing well transposition (UNT). Hypothesis/Purpose: The purpose this study was to compare subjective clinical outcomes and return-to-sports (RTS) metrics between who received UNT during UCLR a matched cohort underwent alone....

10.1177/03635465231152890 article EN The American Journal of Sports Medicine 2023-02-14

Background: Patella alta is a risk factor for recurrent patellar instability. Differences in chondral injury patients with instability between patella and norma have not been evaluated. Purpose: To analyze whether preoperative cartilage damage differs severity location without alta. Study Design: Cohort study; Level of evidence, 3. Methods: Patients who underwent realignment surgery at single institution magnetic resonance imaging (MRI) scans were included. After measurement Caton-Deschamps...

10.1177/23259671231186823 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2023-07-01

PurposeTo retrospectively compare return to sport rates and subjective outcomes of patients who underwent open or endoscopic compartment release for the surgical management chronic exertional syndrome.MethodsThis was a retrospective review lower-extremity fasciotomy syndrome from June 2012 2020. Eligibility included 15 45 years age identified as an athlete had at least 6 months follow-up. Fasciotomies trauma infection were excluded. One surgeon exclusively performed each type surgery....

10.1016/j.asmr.2022.08.003 article EN cc-by-nc-nd Arthroscopy Sports Medicine and Rehabilitation 2022-10-11

Several studies have reported excellent results after surgical repair of proximal hamstring avulsions. However, the effect on these patients receiving workers' compensation has not yet been explored.Workers' undergoing complete tears will similar outcomes when compared with a matched control group non-workers' patients.Cohort study; Level evidence, 3.Workers' who underwent avulsion open between 2010 and 2019 were identified (WC group). A was by age (±3 years), sex, body mass index (BMI; ±3)....

10.1177/23259671221119774 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2022-09-01

Objectives: Overhead throwing athletes, notably pitchers, subject the elbow to tremendous valgus stress, and numerous studies have demonstrated an increasing incidence of ulnar collateral ligament (UCL) injury. However, surgical reconstruction has transformed this injury from career-ending career-interruptive. Two primary techniques exist for UCL (UCLR): 1) Modified Jobe 2) Docking techniques. Prior biomechanical comparisons reported equivalent ulnohumeral stability. Systematic reviews...

10.1177/2325967123s00044 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2023-07-01

Treatment of large articular cartilage lesions the knee includes surgical options one which replacement therapies. Among these therapies include osteochondral allograft (OCA) transplantation, can be performed utilizing a BioUni® (Arthrex Instrumentation System; Arthrex, Naples, FL) and 'snowman' technique repair.To compare clinical radiographic outcomes in patients who have undergone multiplug OCA transplantations repair.Patients underwent transplantation snowman or between January 1st, 2012...

10.7759/cureus.46958 article EN Cureus 2023-10-13

To examine the relationship between tibial tubercle-trochlear groove (TT-TG) distance and patellar tendon length.

10.1016/j.asmr.2023.100870 article EN cc-by-nc-nd Arthroscopy Sports Medicine and Rehabilitation 2024-02-13

Background: Autologous chondrocyte implantation (ACI) and matrix-induced autologous (MACI) are 2-stage procedures requiring an index full-thickness cartilage biopsy. Only a portion of patients ultimately undergo second-stage ACI/MACI. Purpose: To identify with articular defects who underwent arthroscopic debridement biopsy for ACI/MACI compare those did not proceed within 2 years after Additionally, the authors sought to why implantation. Study Design: Case-control study; Level evidence, 3....

10.1177/23259671241271705 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2024-09-01

Locked posterior glenohumeral dislocations are a rare but often missed injury when it occurs. In these dislocations, patients may have reverse Hill-Sachs lesion, which associated with high rates of recurrent instability. Open reduction allograft reconstruction to reconstruct the defect can be used treat chronic locked dislocations. Osteochondral is indicated large affecting less than 50% articular surface and if humeral head has been dislocated for 6 months. With patient in beach chair...

10.1177/26350254221102460 article EN cc-by-nc-nd Video Journal of Sports Medicine 2022-07-01
Coming Soon ...