• 692 Citations
  • 14 h-Index
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Personal profile

Teaching and educational interests

Dr. John Elfar's laboratory is part of the Center for Orthopaedic Research and Translational Science. His group accepts postdoctoral and graduate-level trainees as well as resident physicians seeking a greater involvement in translational research. Dr. Elfar has mentored more than 60 such trainees who have completed clinical subspecialty training both inside and outside of orthopedic surgery.

Clinical interests

Dr. John Elfar specializes in sports, hand and upper extremity surgery, in addition to orthopedic reconstructive surgery. These areas are among Dr. Elfar's clinical interests: nerve compression (pinched nerve), shoulder arthroscopy and elbow arthroscopy, arthroplasty (joint replacement procedures) and complex reconstruction. He is affiliated with Penn State Health Milton S. Hershey Medical Center.

Research interests

Dr. John Elfar is a surgeon-scientist at Penn State College of Medicine. In addition to being a practicing orthopedic surgeon, he directs the Center for Orthopaedic Research and Translational Science (CORTS). This group includes multiple laboratories dedicated to translational orthopaedic research in all its forms. There is a focus on orthopaedic population studies, basic science, cell and RNA biology, epidemiology, biomechanics and drug repurposing for the treatment of musculoskeletal complaints.

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Wrist Medicine & Life Sciences
Hand Medicine & Life Sciences
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Peripheral Nerve Injuries Medicine & Life Sciences
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Radius Fractures Medicine & Life Sciences
Erythropoietin Medicine & Life Sciences
4-Aminopyridine Medicine & Life Sciences

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Projects 2013 2018

Wounds and Injuries
Erythropoietin Receptors
Peripheral Nerve Injuries
Trauma Centers

Research Output 2001 2019

4-Aminopyridine as a single agent diagnostic and treatment for severe nerve crush injury

Noble, M., Tseng, K. C., Li, H. & Elfar, J., Mar 1 2019, In : Military medicine. 184, p. 379-385 7 p.

Research output: Contribution to journalArticle

Nerve Crush
Peripheral Nerve Injuries
Wounds and Injuries
1 Citation (Scopus)

4-Aminopyridine attenuates muscle atrophy after sciatic nerve crush injury in mice

Yue, L., Talukder, M. A. H., Gurjar, A., Lee, J. I., Noble, M., Dirksen, R. T., Chakkalakal, J. & Elfar, J., Aug 1 2019, In : Muscle and Nerve. 60, 2, p. 192-201 10 p.

Research output: Contribution to journalArticle

Nerve Crush
Muscular Atrophy
Sciatic Nerve

Alterations in tibiotalar joint reaction force following syndesmotic injury are restored with static syndesmotic fixation

Kelly, M., Vasconcellos, D., Osman, W. S., Masqoodi, N., Fowler, X., Elfar, J., Olles, M. W., Flemister, A. S., Ketz, J. P. & Oh, I., Oct 1 2019, In : Clinical Biomechanics. 69, p. 156-163 8 p.

Research output: Contribution to journalArticle

Ankle Injuries
Wounds and Injuries
Joint Instability

Mortality Rates of Humerus Fractures in the Elderly: Does Surgical Treatment Matter?

Lander, S. T., Mahmood, B., Maceroli, M. A., Byrd, J., Elfar, J., Ketz, J. P. & Nikkel, L., Jul 1 2019, In : Journal of orthopaedic trauma. 33, 7, p. 361-365 5 p.

Research output: Contribution to journalArticle

Length of Stay

Pharmacological Attenuation of Electrical Effects in a Model of Compression Neuropathy

Modrak, M., Sundem, L., Gupta, R., Zuscik, M. J. & Elfar, J., Mar 20 2019, In : The Journal of bone and joint surgery. American volume. 101, 6, p. 523-530 8 p.

Research output: Contribution to journalArticle

Neural Conduction
Peripheral Nerves