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Daniel Wiznia, MD

Assistant Professor of Orthopaedics and Rehabilitation; Assistant Professor of Orthopaedics and Rehabilitation, Joint Reconstruction; Assistant Professor of Mechanical Engineering & Materials Science, School of Engineering & Applied Science; Director of Technology and Innovation, General Orthopaedics

Research Summary

Dr. Wiznia has developed research programs in total joint replacement, health care policy, and injury prevention. His medical device design and engineering research focuses on mathematical modeling of total joint replacement constructs and orthopedic trauma fracture fixation. His findings have been reported in many professional peer reviewed publications, and his research has been presented at regional and national meetings.

Extensive Research Description

Joint Reconstruction

Dr. Wiznia's arthroplasty research program focuses on improving the postoperative treatment of patients by focusing on reducing surgical site infections, improving pain management techniques, refining DVT prophylaxis and examining the treatment of periprosthetic infections. He has published multiple case reports focusing on solutions to complex arthroplasty. Through Dr. Wiznia's position as the Director of Technology & Innovation for the Department of Orthopaedics, he has developed the total joint replacement robotic center at our Milford campus and computer-navigated total joint replacement surgery techniques.

Healthcare Policy

Dr. Wiznia examines patient disparities in access to care. Specifically, he examines how the Affordable Care Act has influenced Medicaid patient access to care. His team uses appointment accessibility audit studies, what some people term "secret shopper" studies, as an instrument to measure patient access to care. His team has demonstrated that Medicaid patients face a disparity in access to care, which has worsened since the Affordable Care Act. He has found that significantly fewer physicians accept Medicaid, there are more barriers to care placed on Medicaid patients, wait times are significantly longer, and safety net institutions (such as academic medical centers, federally funded community health centers, nonprofit and government hospitals) have higher Medicaid acceptance rates. His team has a long history of mentoring Yale undergraduate students, medical students and residents, and we have collaborated with multiple departments within the School of Medicine.

Injury Prevention

Dr. Wiznia's research focuses on motorcycle and motor vehicle trauma patients. He examines motorcycle trauma patients’ risk factors with the ultimate goal of reducing the number and severity of motorcycle accidents. In addition, he is examining the costs of treating these patients and identifying motorcycle trauma injury patterns and associated mechanisms of injury. He is also examining methods of how to prevent hip fractures in the geriatric patient population.


Research Interests

Biomedical Engineering; Computer Simulation; Conservation of Energy Resources; Conservation of Natural Resources; Delivery of Health Care; Engineering; Health Services Accessibility; Hip Fractures; Hip Joint; Knee Joint; Orthopedic Equipment; Orthopedic Fixation Devices; Orthopedics; Patient Simulation; Health Care Quality, Access, and Evaluation; Health Status Disparities; Healthcare Disparities; Conservation of Water Resources

Research Images

Selected Publications

Clinical Trials

ConditionsStudy Title
Men's Health; Women's Health; Pain ControlPeriarticular Injection Versus Peripheral Nerve Block in Total Hip Arthroplasty