2021 Program Faculty



Corey L. Calendine, MD

Orthopaedic Surgeon
Bone and Joint Institute of Tennessee
Franklin, TN

Cory Calendine, MD, is a board-certified orthopaedic surgeon specializing anterior hip replacement, robotic joint replacement, and partial and total hip and knee replacement. Dr. Calendine received his medical degree from the University of Tennessee College of Medicine, and completed a residency in orthopaedic surgery at Vanderbilt University Medical Center. He completed his fellowship training in adult reconstruction of the hip and knee at the world-renowned Anderson Orthopaedic Research Institute in Alexandria, Virginia.

He has expertise in robotic-arm assisted surgery as well as revision hip and knee replacement, knee arthroscopy (knee scope) and treatment of arthritis and osteoarthritis of the hip and knee.

Dr. Calendine currently serves as chief of the Division of Orthopaedic Surgery for Williamson Medical Center


Florian Dibra, MD

Orthopaedic Surgeon
Orthopaedic Institute of North Texas
Frisco, TX

Florian Dibra, MD graduated with honors from Villanova University in Villanova, Pennsylvania. Soon after, he received his medical degree, with cum laude honors from the esteemed Jefferson Medical College in Philadelphia, Pennsylvania. He completed his orthopedic surgery training at the University of Florida. In his last year of residency, he was awarded the Chief Resident Best Research Award for his laudable performance, as well as the 2019 Knee Arthroplasty Game Changer Award at the International Congress for Joint Reconstruction South Hip and Knee Course. He continued at the University of Florida Health Hospital to complete his fellowship in Adult Arthroplasty with an emphasis in hip and knee reconstruction.

Dr. Dibra has an extensive research background and several publications, book chapters, and poster presentations. This includes a number of articles in Journal of Arthroplasty and Arthroplasty Today discussing certain correlations between hip arthritis and knee pain as well as other relevant issues in hip reconstruction.


Jamie Christie

Forum Administrator

Jamie has been a part of BoneSmart for more than 10 years. During that time, her mission has been to provide accurate, unbiased information and advice for joint replacement surgery and recovery patients who are in pain or fearful. She has a pragmatic approach to the guidance she shares on the forum. Building on her own experience with joint replacement, frequent collaboration with a network of medical professionals, and drawing from experience working with thousands of patients in recovery, she addresses each member’s concerns individually in terms of what works and what doesn’t. She views the study of arthritis and joint replacement as a lifelong continuum of learning.

Jamie graduated cum laude from the University of Central Missouri where she studied biology and anatomy in addition to her degree fields of commercial art and English. As a career Marine Corps civilian employee, she held a variety of senior management positions and received the Superior Civilian Service Award, the highest honor the Marine Corps can bestow on a civilian service member.

Jamie has had a lifelong interest in health, nutrition and medicine. Her work with BoneSmart allows the blending of that knowledge with her desire to help people retake their lives from the disability that can come with arthritis.


Gerard A. Malanga, MD

New Jersey Sports Medicine, LLC
Cedar Knolls, NJ

Dr. Malanga is the Founder and Partner of New Jersey Sports Medicine, LLC and New Jersey Regenerative Institute in Cedar Knolls, New Jersey. He has served as Director of Pain Management at Overlook hospital and Director of Research of Atlantic Sports Health. He is Board certified in Physical Medicine and Rehabilitation, Sports Medicine and Pain Medicine. He completed a sports medicine fellowship at Mayo Clinic in Rochester, MN. and served as Senior Associate Consultant at Mayo Clinic and Director of Sport, Spine and Orthopedic Rehabilitation and Fellowship director at Kessler Institute.

Dr. Malanga has expertise in the nonoperative treatment of a variety of orthopedic disorders including neck and back pain as well as shoulder, knee, and other sport medicine and musculoskeletal problems. His expertise includes EMG testing; spinal and joint injections, musculoskeletal ultrasound and Platelet Rich Plasma (PRP) and bone marrow and adipose-derived stem cell treatments.


Paul A. Manner, MD, FRCSC

Department of Orthopaedics and Sports Medicine
University of Washington
Seattle, WA

Many patients express interest in minimally invasive approaches to hip and knee surgery. I believe that this type of surgery, though technically challenging, offers many benefits to the patient, including less tissue injury, less post-operative pain, faster rehabilitation, and a shorter hospital stay.

My major interests relate to the care and treatment of osteoarthritis. My aim is to conduct clinical research that has a significant impact on the field while raising the clinical standards for optimal patient care. I want to reduce morbidity and improve outcomes in these patients not only through research but also by establishing a model of care that can be universally applied, easily adapted to both academic and community groups and led by outstanding trainees who can influence care throughout the world.

Dr. Manner's major clinical interest is care and treatment of osteoarthritis. His other clinical interests include hip fractures, minimally-invasive surgery for knee and hip replacement, and treatment for degenerative conditions in hip and knee.


Michael D. Ries, MD

Professor & Vice Chairman Department of Orthopedic Surgery
University of California, San Francisco
Reno Orthopaedic Clinic
Reno, NV

Dr. Michael Ries is an orthopedic surgeon and the Arthroplasty Fellowship Director at the Reno Orthopaedic Clinic. He received a BS and MS from MIT, and his medical degree from Dartmouth Medical School, and has been in practice for more than 25 years.

Dr. Ries has a practice limited to hip and knee arthroplasty surgery and treatment of arthritic hip and knee conditions. He was on the full time faculty at the University of California, San Francisco from 1997 to 2013 where he was Professor of Orthopaedic Surgery and Chief of Arthroplasty. During this time he also participated regularly in laboratory and clinical research. Dr. Ries has published 210 peer reviewed journal articles and 52 book chapters on topics related to clinical outcomes and biomaterials used in hip and knee replacement.

Dr. Ries is also an inventor on 45 US patents for hip and knee replacement devices and has published a book “The Joint Kitchen” on how ideas for hip and knee replacement inventions are created.


Raj K. Sinha, MD, PhD

Orthopaedic Surgeon
STAR Orthopaedics
Rancho Mirage, CA

Raj K. Sinha, MD, PhD has been leading the way in orthopedic medicine in the Coachella Valley area for nearly 15 years. Specializing in hip and knee replacements, Dr. Sinha has been named a Top Doctor in Palm Springs Life and featured on NBC, CBC, ABC, and Fox for his innovative and highly effective treatment methods.

Dr. Sinha earned his medical degree from Jefferson Medical College of Thomas Jefferson University in Philadelphia, then interned at Department of Surgery at Abington Memorial Hospital in Abington, PA. Upon completing his residency at the Department of Orthopedic Surgery at Thomas Jefferson University, he concurrently completed a PhD in Biochemistry and Molecular Biology at the Thomas Jefferson University College of Graduate Studies.

His studies prepared him to be not only an excellent surgeon but also a researcher, educator, and lecturer in orthopedics.

Dr. Sinha chose orthopedic medicine because he believed it gave him the greatest opportunity to change patients’ lives positively, which he continues to do today through direct patient care and both surgical and non-surgical treatment methods.


Jacob A. Spencer, DO

Sports Medicine Specialist
Orthopaedic Surgeon
STAR Orthopaedics
Rancho Mirage, CA

Dr. Spencer is a Southern California native who was active in sports throughout his childhood.  It was through these sports where he was first introduced to the field of Orthopaedics and Sports Medicine, which sparked his passion for the field.  Dr. Spencer went on to attend San Diego State University where he received his B.S. in Cell and Molecular Biology before going on to Georgetown University, where he received his M.S. in Physiology.  Dr. Spencer completed his medical school training at Midwestern University's Arizona College of Osteopathic Medicine, where he received his D.O.  He then graduated from his Orthopedic Surgery residency at Jersey City Medical Center.  After residency, he completed a Sports Medicine Fellowship at the renowned 3B Orthopedic Institute in Philadelphia, PA, while continuing to publish research with experts in the field. Throughout fellowship, Dr. Spencer mastered numerous advanced surgical techniques while caring for elite level athletes ranging from high school to the professional level. He also served as a Team Physician for West Chester University, where he worked along side fellow Physicians, Athletic Trainers and students while taking care of college athletes in football, baseball, basketball, soccer, lacrosse, track and field, gymnastics, tennis, and rugby.

Dr. Spencer believes in a patient-first approach, where your time and your concerns are as important as your outcome and return to pain-free activity. Taking time to ensure you understand your diagnosis and how your body is affected by it is a top priority. He combines your goals and expectations to create a personalized treatment plan, tailored to each patient. Dr. Spencer is committed to utilizing the latest in non-surgical techniques to alleviate pain and prolong the life of your joints with Hyaluronic Acid and Nonoperative Regenerative Treatment. When necessary, he applies his expertise in Arthroscopic and Joint Replacement surgery to repair, reconstruct, and/or replace torn tendons, damaged ligaments, and worn cartilage. Dr. Spencer takes pride in providing excellent care and getting you back in the game.