Is Living With Knee Pain Really Living?

If you're one of the estimated 30 million Americans suffering from osteoarthritis1, discover how knee replacement using NAVIO robotic assistance may help you return to the activities you love.

How Do I Know If I Am A Candidate For Robotics-Assisted Knee Replacement Using The NAVIO System?

Although each patient must consult with a physician individually, typical knee replacement candidates share the following characteristics:

  • Knee pain in the knee during activities
  • Knee pain is limiting activities on more days than not
  • Initial knee pain or stiffness caused by activities from a seated position
  • No longer finding relief from non-surgical treatment options

All information provided on this website is for information purposes only. Every patient's case is unique and each patient should follow his or her doctor's specific instructions. Please discuss nutrition, medication and treatment options with your doctor to make sure you are getting the proper care for your particular situation. If you are seeking this information in an emergency situation, please call 911 and seek emergency help.

All materials copyright © 2019 Smith & Nephew, All Rights Reserved.

Dr. Joseph Signorelli
Orthopedic Surgeon

Dr. Joseph Signorelli is a board certified orthopedic surgeon with Orthopedic Services of Memorial Medical Center in Ashland. Dr. Signorelli formerly served as medical director of the Joint Replacement Center at Essentia Health – Orthopaedics in Duluth. Dr. Signorelli currently completes approximately 400 joint replacement surgeries a year, focusing primarily on the hip followed by the knee.

Dr. Signorelli completed a year long Arthroplasty Fellowship at Brigham and Women’s Hospital. Brigham and Women’s Hospital is a teaching affiliate to Harvard Medical School. He is a graduate of the Orthopedic Surgery Residency program at Dartmouth and attended medical school at the University of Minnesota.

Dr. Signorelli was born and raised in Duluth. He is married to his 9th grade sweetheart and has a 10-year old son. When he’s not working, you will find him fishing, camping, canoeing or brewing beer. He and his family recently purchased a home outside of Washburn and he is looking forward to improving his fishing record on Chequamegon Bay.

Dr. Justin Cummins
Orthopedic Surgeon

Dr. Justin Cummins is a board certified orthopedic surgeon. Dr. Cummins formerly served as an orthopedic surgeon at Essentia Health – Duluth Clinic. Dr. Cummins focuses primarily on sports medicine, including arthroscopic shoulder, knee, and hip surgeries. During his tenure, Dr. Cummins has successfully performed over 5,000 surgeries. This includes treating Olympians, Division I, II and III college athletes, prep athletes and others.

Dr. Cummins completed a year long Sports Medicine and Arthroscopy Fellowship at the Aspen Foundation for Sports Medicine in Aspen, Colorado. He completed his residency at Dartmouth-Hitchcock Medical Center and attended medical school at the University of Washington School of Medicine. Dr. Cummins also has a Masters degree in Evaluative Clinical Science from Dartmouth College.

Dr. Cummins grew up in a small town in Idaho and is looking forward to returning to his rural roots. He and his wife have four children and recently took up completing triathlons together. When they aren’t busy training, you will find them enjoying a number of water sports near their home in Lake Nebagamon or checking out area hiking and biking trails.


  1. Centers for Disease Control and Prevention, Arthritis-Related Statistics, Prevalence of Specific Types of Arthritis, http://www.cdc.gov/arthritis/data_statistics/arthritis-related-stats.htm, accessed 8/10/16

All information provided on this website is for information purposes only. Every patient's case is unique and each patient should follow his or her doctor's specific instructions. Please discuss nutrition, medication and treatment options with your doctor to make sure you are getting the proper care for your particular situation. If you are seeking this information in an emergency situation, please call 911 and seek emergency help.

All materials copyright © 2019 Smith & Nephew, All Rights Reserved.