David Ayers is Arthur M. Pappas Professor of Orthopaedics, Chair Emeritus of the Department of Orthopedics and Physical Rehabilitation, Medical Director of the Musculoskeletal Center of Excellence, as well as, Orthopedist-in-Chief at University of Massachusetts Memorial Health Care System in Worcester, MA. Dr. Ayers has led the development of several department-based clinical registries that uniquely include patient-reported outcomes in total joint replacement, spine, and hand and upper extremity.

Hua Zheng, PhD leads FORCE-TJR IT and Informatics team. She is also an Assistant Professor of Orthopedics and Physical Rehabilitation at University of Massachusetts Medical School.

After completing a PhD in computer science and engineering, Hua completed a post-doctoral fellowship in clinical informatics supporting the outcome registries at UMass and the FORCE-TJR national database. Her innovative work focuses on user interface design and database function to process and present real-time data to inform clinical practice.

Michael works for FORCE-TJR to support the IT infrastructure. In addition to managing our IT systems to meet our member’s needs, Michael provides customer support for technical issues and assists with data integration and analysis.

Before joining the FORCE-TJR team, Michael served in the United States Navy as an Aviation Electronics Technician for 4 years. Afterwards he pursued his degree in Computer Science while working as an I.T. intern at UMASS Medical School.

Betsy has been with FORCE-TJR since the beginning in 2010. She brings expertise in patient engagement, contributing to FORCE-TJR high recruitment and follow-up PROM data collection rates. Prior to joining FORCE-TJR, Betsy worked as research coordinator on several projects, including the Women’s Health Initiative- a multisite national study looking at major health issues causing morbidity and mortality in postmenopausal women.

Betsy received a bachelor’s degree at Worcester State College with a major in health studies and minor in physical education. In her spare time, Betsy enjoys participating in many sports including competitive tennis and recreational golf. She also spends lots of time having fun with her family including her new granddaughter.

Jasmine joined the team in June 2021 as a Clinical Research Assistant. She graduated from Umass Boston with a Bachelor of Science degree in Psychology. In her last semester, she took on a research apprenticeship, which led to her current position at Umass.

In her spare time, Jasmine enjoys hanging out with family, watching movies, and practicing her guitar.

Annabelle first joined FORCE-TJR as a high school senior for a short Co-Op Senior Project. She has since continued her work on the study, handling data entry amongst other tasks, while pursuing a bachelor's degree in both Neuroscience and Psychology at the College of the Holy Cross.

In her spare time, Annabelle is a competitive rower for the Varsity Women’s Rowing team at the College and a team liaison between the current student-athletes and alumni. She also serves as her team’s representative on the Student Athlete Advisory Committee where she is Co-Head of the Alumni Relations Branch.