Eric C. Hempen

ORCID: 0000-0001-8396-2659
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About
Contact & Profiles
Research Areas
  • Bone fractures and treatments
  • Orthopedic Surgery and Rehabilitation
  • Foot and Ankle Surgery
  • Pelvic and Acetabular Injuries
  • Pregnancy-related medical research
  • Shoulder Injury and Treatment
  • Shoulder and Clavicle Injuries
  • Sports injuries and prevention
  • Hip disorders and treatments
  • Knee injuries and reconstruction techniques
  • Spinal Fractures and Fixation Techniques
  • Urological Disorders and Treatments
  • Tendon Structure and Treatment

University of Maryland, Baltimore
2023

Allegheny Health Network
2021-2022

Northwestern University
2019-2021

Northwestern Memorial Hospital
2019

To evaluate the individual contributions to stability of superficial and deep deltoid ligaments in setting SER IV ankle fractures.Nineteen total cadaveric specimens were used. injuries created with rupture either (SER IV-S) (n = 9) or IV-D) 10). These tested by applying an external rotation force (1 Nm, 2 3 4 Nm). Changes position talus recorded a 3D motion tracker. Injury conditions compared 4-step general linear model repeated measures. condition was also intact state each other using...

10.1097/bot.0000000000002216 article EN Journal of Orthopaedic Trauma 2021-06-19

To biomechanically analyze instability in supination external rotation (SER) II/III patterns.Nineteen cadaver legs were tested a mechanical jig. One, 2, 3, and 4 Nm of applied to intact ankles, SER II injuries, III injuries. The talar position relative the tibia was recorded using 3D motion tracking. Change from unloaded state each condition torque level calculated. Results analyzed analysis variance with post hoc paired t tests.SER showed statistically significant differences coronal...

10.1097/bot.0000000000001487 article EN other-oa Journal of Orthopaedic Trauma 2019-07-21

<title>Abstract</title> Background Early weight bearing is frequently allowed and encouraged following fixation of hip femoral tibial shaft fractures, while pelvis, acetabulum, lower extremity periarticular fractures are often prescribed 6–12 weeks restricted bearing. Our objective was to perform a feasibility randomized trial immediate versus delayed as tolerated (WBAT) for the distal femur, proximal tibia. Methods A parallel two-arm pilot performed at one academic level I trauma center....

10.21203/rs.3.rs-4675912/v1 preprint EN cc-by Research Square (Research Square) 2024-12-19

To compare the compressive force generated by a 3.5-mm compression plate with and without provisional fixation using 2.0-mm minifragment plate.Fourth generation composite large humeral sawbones underwent transection were divided into 2 groups. The first group plate; second followed definitive plate. Using load cell, was measured after insertion of each eccentrical placed screws total recorded.There no difference in successive screw (P = 0.59 0.58, respectively). Likewise, there significant...

10.1097/bot.0000000000002059 article EN Journal of Orthopaedic Trauma 2021-05-03

Category: Ankle Introduction/Purpose: fractures with combined deltoid ligament/syndesmotic injuries are common. Proper reduction of these may be deceptively difficult due to the complexity tibiotalar and syndesmotic articulations. The syndesmosis, in particular, has been shown have a fairly high rate malreduction traditional techniques intraoperative imaging. Additionally, ligament important contributions alignment stability which cannot replaced laterally based fixation alone. Deltoid...

10.1177/2473011418s00174 article EN cc-by-nc Foot & Ankle Orthopaedics 2018-07-01

Category: Trauma Introduction/Purpose: Supination external rotation (SER) 2 and SER3 ankle injuries are thought to be stable whereas SER4 unstable. In other words, deltoid rupture is a necessary component of instability in SER injuries. However, biomechanical evidence has shown that as little 1 mm talar shift results 40% loss contact area leading increased forces. Additionally, the stress exam which typical test used detect poorly standardized literature limiting its ability subtle...

10.1177/2473011418s00062 article EN cc-by-nc Foot & Ankle Orthopaedics 2018-07-01
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