Michael R. Karns

ORCID: 0000-0001-9586-7050
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About
Contact & Profiles
Research Areas
  • Knee injuries and reconstruction techniques
  • Shoulder Injury and Treatment
  • Sports injuries and prevention
  • Hip disorders and treatments
  • Orthopaedic implants and arthroplasty
  • Total Knee Arthroplasty Outcomes
  • Shoulder and Clavicle Injuries
  • Lower Extremity Biomechanics and Pathologies
  • Opioid Use Disorder Treatment
  • Nerve Injury and Rehabilitation
  • Anesthesia and Pain Management
  • Adhesion, Friction, and Surface Interactions
  • Orthopedic Surgery and Rehabilitation
  • Bone and Joint Diseases
  • Injury Epidemiology and Prevention
  • Cardiac Valve Diseases and Treatments
  • Cardiovascular Effects of Exercise
  • Hip and Femur Fractures
  • Surgical site infection prevention
  • Cardiac pacing and defibrillation studies
  • Medical Education and Admissions
  • Nanoparticles: synthesis and applications
  • Microplastics and Plastic Pollution
  • Neuropeptides and Animal Physiology
  • Diversity and Career in Medicine

University Hospitals of Cleveland
2018-2025

Case Western Reserve University
2014-2024

University School
2015-2024

University of Utah
2017-2020

MetroHealth
2020

University Hospitals Cleveland Medical Center
2015-2018

Orthopaedic Center
2018

Clinical Orthopaedics and Related Research
2018

National Center for Advancing Translational Sciences
2018

Stryker (United States)
2018

Orthopaedic surgery in the U.S. historically has been among least demographically diverse specialties medicine. Currently, limited data exist on how patients perceive diversity within field and what look for when choosing an orthopaedic surgeon. The purpose of this study was to identify specific patient preferences surgeon demographics understand perceptions racial gender surgery.Nonconsecutive from clinics affiliated with a academic health system voluntarily completed 39-item questionnaire...

10.2106/jbjs.23.00071 article EN Journal of Bone and Joint Surgery 2023-10-06

Abstract Background Subspine impingement is a recognized source of extraarticular hip impingement. Although CT-based classification systems have been described, to our knowledge, no study has evaluated the morphology anteroinferior iliac spine (AIIS) with plain radiographs nor knowledge any compared its appearance between and CT scan correlated AIIS physical findings. Previous work suggested correlation ROM but this not clinically validated. Furthermore, if can be found adequately screen for...

10.1097/01.blo.0000533626.25502.e1 article EN Clinical Orthopaedics and Related Research 2018-05-24

Hip arthroscopy techniques have continued to evolve for femoroacetabular impingement and other intra-articular pathologies. However, there is still debate about the importance technique of routine capsular closure. We present an efficient reliable creating a watertight closure prevent iatrogenic macro microinstability. This Technical Note details our stepwise using figure eight sutures obtain complete secure

10.1016/j.eats.2016.10.021 article EN cc-by-nc-nd Arthroscopy Techniques 2017-04-01

Distraction of the hip joint is a necessary step during arthroscopic surgery. The force traction needed to distract not routinely measured, and little known about which patient factors may influence this force.To quantify required for adequate distraction surgery explore relationship between stiffness patient-specific demographics, flexibility, anatomy.Case series; Level evidence, 4.A total 101 patients (61 female) undergoing primary were prospectively enrolled. A load cell attached boot...

10.1177/2325967118807707 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2018-11-01

Few studies have investigated the influence of patient-specific variables or procedure-specific factors on overall cost anterior cruciate ligament reconstruction (ACLR) in an ambulatory surgery setting.To determine patient- and influencing direct outpatient arthroscopic ACLR utilizing a unique value-driven outcomes (VDO) tool.Cohort study (economic decision analysis); Level evidence, 3.All ACLRs performed by 4 surgeons over 2 years were retrospectively reviewed. Cost data derived from VDO...

10.1177/2325967118788543 article EN cc-by-nc-nd Orthopaedic Journal of Sports Medicine 2018-08-01

Background: The majority of rim recession for femoroacetabular impingement (FAI) is performed anteriorly and has traditionally been assessed by the lateral center-edge (CE) angle, which correlates most closely with coverage. radiographic false-profile view permits measurement anterior coverage via CE angle more Purpose: To answer following questions: (1) How does incremental change angles? (2) Can these changes be predicted a formula? Study Design: Descriptive laboratory study. Methods:...

10.1177/0363546515571918 article EN The American Journal of Sports Medicine 2015-02-25

A 47-year-old man with an isolated femoral neck fracture was treated open reduction and internal fixation a medial buttress plate dynamic hip screw. Union achieved without osteonecrosis of the head. However, arthroscopy that performed for persistent pain following union revealed intra-articular impingement substantial anterior acetabular chondral injury.To our knowledge, this is first reported complication associated application fracture. This case report may help surgeons who employ...

10.2106/jbjs.cc.18.00135 article EN JBJS Case Connector 2019-03-01

The purpose of this article is to determine normative values for the length acetabular rim and detect differences between gender, age, ethnicity, height leg length. Six measurements were taken on 143 cadaveric skeleton specimens (286 acetabula) using a coordinate-measuring device: circumferential (excluding notch), anterior inferior iliac spine (AIIS)-anterior, AIIS-posterior, 12-3 o'clock, 12-9 o'clock 11-5 o'clock. Museum specimen data from previous study recorded 109 specimens. Intraclass...

10.1093/jhps/hnw038 article EN cc-by Journal of Hip Preservation Surgery 2016-12-22

Arthroscopic rotator cuff repair (RCR) is associated with substantial postoperative pain. Oral narcotic agents are the preferred analgesic postoperatively. However, these several side effects and a potential for abuse. This study evaluates efficacy of ketorolac as an adjunctive agent pain control after arthroscopic RCR.Adult patients undergoing RCR were prospectively enrolled randomized to one two groups. The received our institution's standard-of-care protocol, including...

10.5435/jaaos-d-20-01432 article EN Journal of the American Academy of Orthopaedic Surgeons 2021-05-28

➤ Both mechanical and biological factors can contribute to bone loss tunnel widening following primary anterior cruciate ligament (ACL) reconstruction. Revision ACL surgery success is dependent on graft position, fixation, incorporation. 1-stage 2-stage revision reconstructions be successful in correctly indicated patients. Potential future solutions may involve the incorporation of agents enhance surgery, including use marrow aspirate concentrate, platelet-rich plasma, morphogenetic protein-2.

10.2106/jbjs.22.01321 article EN Journal of Bone and Joint Surgery 2023-07-28

Background: Prior investigations have demonstrated increased injury risk on artificial turf at the collegiate and professional levels. However, no prior study has examined this among high school athletics beyond football. The purpose of was to compare incidences versus natural playing surfaces athletes. Methods: Data collected from 26 schools analyzed grass based sport. Analyses were also performed incidence by location (upper extremity, lower torso), sport, level competitive play (freshman,...

10.1097/bco.0000000000001012 article EN Current Orthopaedic Practice 2021-05-12
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