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Surgical Faculty by Specialty

Foot and Ankle

  • Clayton Bettin, MD, Assistant Professor, Director of Foot and Ankle Fellowship
  • Benjamin J. Grear, MD, Instructor
  • G. Andrew Murphy, MD, Associate Professor
  • David R. Richardson, MD, Associate Professor
  • Carson Rider, MD, Instructor


  • Norfleet Thompson, MD, Instructor, Director of Hand Fellowship
  • James H. Calandruccio, MD, Associate Professor
  • William J. Weller, MD, Instructor
  • Austin Murphy, MD, Instructor

Internal Medicine

  • Jimmie Mancell, MD, Associate Professor

Orthopaedic Oncology

  • Robert K. Heck, Jr., MD, Associate Professor
  • Patrick C. Toy, MD, Assistant Professor

Pediatric Orthopaedics

  • Derek M. Kelly, MD, Associate Professor, Residency Program Director
  • James H. Beaty, MD, Professor
  • Jeffrey R. Sawyer, MD, Professor
  • David D. Spence, MD, Assistant Professor
  • William C. Warner, Jr., MD, Professor
  • Benjamin Sheffer, MD, Assistant Professor
  • Keith Orland, MD, Instructor

Physical Medicine and Rehabilitation

  • Douglas T. Cannon, MD
  • Santos Martinez, MD, Assistant Professor
  • Ashley Lewis Park, MD, Assistant Professor


  • Gregory D. Dabov, MD, Assistant Professor
  • Thomas W. (Quin) Throckmorton, MD, Professor, Residency Program Director 
  • Barry Phillips, MD- Professor
  • Joseph Lamplot, MD, Associate Professor
  • Robert Miller, MD, Associate Professor


  • Keith Orland, MD, Instructor
  • Ashley Lewis Park, MD, Assistant Professor
  • Keith Williams, MD, Associate Professor
  • Chad Campion, MD, Instructor
  • Omar Medina, MD, Instructor

Sports Medicine

  • Frederick M. Azar, MD, Professor, Director Sports Medicine Fellowship
  • Tyler Brolin, MD, Assistant Program Director
  • Nahum Beard, MD, Instructor
  • David Bernholt, MD, Instructor
  • John Hyden, MD, Assistant Professor
  • Marc J. Mihalko, MD, Assistant Professor
  • Thomas W. (Quin) Throckmorton, MD, Professor
  • Patrick C. Toy, MD, Assistant Professor
  • Robert Miller, MD, Associate Professor
  • Joseph Lamplot, MD, Associate Professor
  • Matthew Gilbert, MD, Assistant Professor
  • Barry Phillips, MD, Professor

Total Joint Replacement

  • Kevin B. Cleveland, MD, Instructor
  • John R. Crockarell, Jr, MD, Professor
  • Gregory D. Dabov, MD, Assistant Professor
  • James L. Guyton, MD, Associate Professor
  • James W. Harkess, MD, Associate Professor
  • Anthony A. Mascioli, MD, Assistant Professor
  • Marc J. Mihalko, MD, Assistant Professor
  • William M. Mihalko, MD, PhD, Hyde Professor in Biomechanical
  • Marcus Ford, MD, Assistant Professor
  • Christopher Holland, MD, Instructor


  • Patrick C. Toy, MD, Assistant Professor


  • John C. Weinlein, MD, Assistant Professor, Director of Trauma Fellowship
  • Matthew I. Rudloff, MD, Assistant Professor, Assistant Program Director
  • Michael Beebe, MD, Instructor
  • Christopher Cosgrove, MD, Instructor
  • A. Paige Whittle, MD, Associate Professor

Research Faculty

Karen Hasty, PhD
Karen Hasty, PhD, holds the George Thomas Wilhelm Endowed Professorship in Orthopaedic Surgery within the UT-Campbell Clinic Department of Orthopaedic Surgery and Biomedical Engineering and is Director of Basic Research in the Department. Her research is currently funded by grants from the Arthritis Foundation, the Veteran's Administration, and the National Institutes of Health. Dr. Hasty completed her doctorate in Anatomy (1981) studying cartilage regeneration with an Arthritis Foundation fellowship (1985) at the University of Tennessee Health Science Center working on the matrix metalloproteinases involved in joint destruction. Her current research focuses on early diagnosis and treatment of cartilage damage in arthritis using theragnostic nanosomes localizing to damaged cartilage in small animal models and the pathways that function for induction of osteoarthritis with biomechanical stress. In addition, her interests also lie in tissue engineering for clinical orthopaedic applications. A Career Scientist at the VA, Dr. Hasty has been a reviewer for the Journal of Cellular Physiology; Journal of Clinical Investigation; Arthritis and Rheumatism, Journal of Immunology; Journal of Biological Chemistry; Journal of Cell Biology; Matrix; Histochemical Journal and Cartilage and Osteoarthritis for 16 years. She has published more than 82 journal articles, has presented more than 115 abstracts and has written segments in seven books.
Hongsik Jake Cho, PhD, MBA

Hongsik Jake Cho, PhD, MBA, is an Assistant Professor in Department of Orthopaedic Surgery and Biomedical Engineering within the University of Tennessee-Campbell Clinic in Memphis. His research is currently funded by grants from the Arthritis Foundation and the Veteran's Administration, respectively. Dr. Cho completed his doctorate in biomedical engineering (2003) at the Ajou University in Korea, a post-doctoral trainee (2006) at the University of Tennessee Health Science Center and MBA at Georgia Institute of Technology (2009). He is an associate member of the Orthopaedic Research Society (ORS) and Korean Tissue Engineering and Regenerative Medicine Society (KTERMS). Dr. Cho has experience culturing human primary cells and adipose-derived stem cells (ADSC) for the transplantation of autologous chondrocytes, using tissue-engineering techniques to rebuild cartilage and disc tissue, investigating the effects of sonication on osteoarthritis cartilage, nanotechnology with immuno-liposome and studying the effects of cytokines on arthritis induced cartilage and disc tissue.

Dr. Cho’s long-term goals include developing and commercialize better treatments that can be directly applied in the clinical setting of biomedical and orthopedic healthcare. Instead of doing research that is theoretical and does not provide immediate assistance to patients with osteoarthritis, his goals are to focus his research on creating therapeutic products that can immediately be placed into treatment protocols.

Weikuan Gu, PhD
Weikuan Gu, PhD, joined the University in 2002. He obtained his PhD in 1994 from Cornell University and completed postdoctoral studies in 1996. Dr. Gu has published 63 peer reviewed publications, eight book chapters, and 43 abstracts/presentations. Dr. Gu recently edited a book named "Gene Discovery for Disease Models" which has been published by Wiley. His research currently focuses on two areas: (a) positional cloning and functional studies of spontaneous mutations of genes in mice using a newly developed integrative strategy, which combines genomic resources and updated biotechnologies, and (b) identification of genetic factors that regulate bone density, bone structure, and susceptibility to arthritis. For characterization of genes involved with bone metabolism, our researchers are using the nanoindentation technology and genetic markers to map the quantitative trait loci (QTL) of bone quality from a mouse F2 population. In arthritis research, he is using the QTL mapping and microarray technology to identify pathways that regulate resistance to the spontaneous arthritis in IL-1ra deficient mice (funded by NIH, collaborating with Dr. J. Stuart at VA Medical Center and Dr. K. Hasty). In addition, he is Director for the DNA Discovery Core of the UTHSC Center of Genomics and Bioinformatics. The core, which services the UT research and education community, has the capacity of high throughput gene expression analysis, genotyping, and mutation/polymorphism screening. Learn more at the Gene Discovery Labexternal link website.
Susan A. Miranda, PhD

Susan A. Miranda, PhD, joined the University in 2014. She obtained her PhD in molecular biology from UCLA in 2004 and completed her postdoctoral fellowship at Dana-Farber Cancer Institute in 2008.

The goal of the Miranda Lab is to understand the mechanism of action of estrogens in bone cells, especially focusing on the genes regulated by estrogens in osteoblasts and osteoclasts. Understanding the molecular biology of estrogens in bone is critical to preventing and/or treating osteoporosis. Osteoporosis is a significant public health concern that affects over 10 million people in the United States. Estrogens are important in the development of bone and maintenance of bone mineral density in both men and women. It has been known for a long time that estrogens are necessary for strong bones, but little is known about their mechanism of action in bone cells.

Biomedical Engineering Faculty

William Mihalko, MD

William Mihalko, MD is an orthopaedic surgeon in the Campbell Clinic and holds the Hyde Chair of Excellence in Rehabilitative Engineering in the UT Department of Orthopaedics and Biomedical Engineering. He spends 40% of his time in clinical practice at the Memphis Veterans Administration Hospital and 60% in research and administrating the joint program on the UT-campus. Dr. Mihalko is very active in leadership positions in the American Academy of Orthopaedic Surgeons and ASTM International, where he serves as an officer for F04 3800 (computer assisted surgical systems) and as the User-vice-chair for F04 medical devices.

His current research interests align with his clinical practice as a hip and knee arthroplasty surgeon. These include a retrieval program he has developed for analyzing well-functioning long term implants obtained at time of necropsy. He also investigates biomarkers associated with early joint replacement failures. He works collaboratively with Dr. Audrey Zucker-Levin and Dr. John L. Williams in the gait analysis laboratory located in the UT Department of Physical Therapy.

Richard A. Smith, PhD

Richard A. Smith, BS, MS, PhD joined the University in 1983 and in 1985 he joined the Department of Orthopaedic Surgery as a Research Associate. In 1997, Dr. Smith became an Assistant Professor in the Department of Orthopaedic Surgery. He is currently an Associate Professor and the Graduate Program Director for the Biomedical Engineering and Imaging graduate program at UTHSC.

Dr. Smith holds secondary appointments in Mechanical Engineering and Biology at the University of Memphis. Dr. Smith did his graduate research work in Vertebrate Zoology (Anatomy and Physiology, Masters) and Microbiology and Molecular Cell Science (PhD). Dr. Richard Smith is studying cellular inflammation responses to biomaterial debris, bacterial toxins and tick saliva. He is studying a rabbit model of tendonosis, a mouse model of sickle cell disease and is involved in development of a rabbit bone graft biomaterial preclinical assessment model.

Dr. Smith's current research also focuses on enhanced soft tissue attachment such as the integration of a tendon graft into bone. He is also interested in drug, peptide and hormonal effects on bone mineral density, content and strength. He has published 45 peer review journal articles and has over 80 research presentations at regional, national and international scientific conferences. He is a member of the Orthopaedic Research Society and the American Society for Bone and Mineral Research.

Denis J. DiAngelo, PhD

Denis J. DiAngelo, PhD, is the UTHSC Distinguished Professor in Biomechanics and Director of the BioRobotics Laboratory in the Department of Orthopaedic Surgery and Biomedical Engineering at the University of Tennessee Health Science Center. He developed advanced robotic testing platforms that simulate how human joints move under different loading conditions. Much of their earlier research focused on studying the biomechanical properties of spinal instrumentation systems. But over the past few years have expanded the capacity of the testing system to investigate foot-ankle and shoulder biomechanics.

Another research initiative underway in the BioRobotics Lab is the study of back support systems. One current project focuses on
the development of a novel testing protocol that quantifies the structural properties of back braces and has been used to design a dynamic back support device for weak elderly individuals or young degenerative disc patients. They are also collaborating with the Pediatric Orthopaedic Spine Surgeon: Dr. Derek Kelly, Dr. Bill Warner, and Dr. Jeff Sawyer at LeBonheur Children’s Hospital to better understand the mechanics of back braces used to rewet adolescent idiopathic scoliosis.

Jan 17, 2024