About Orthopaedics

Orthopaedics is a medical specialty that deals with conditions and injuries of the musculoskeletal system, a complex structure that enables movement and provides the body with form, stability, and support.  With a focus on improving your ability to move and stay active, an orthopaedic surgeon works with your Primary Care Provider to suggest and direct acute-care management and surgical treatment for a variety of bone and joint problems.

At UNM Sandoval Regional Medical Center, our board-certified orthopaedic surgeons provide a wide range of care designed to improve musculoskeletal function and guide patients toward reaching their full potential – allowing them to stay active and “on the move”. These services include:

  • General Orthpaedic Surgery
    • Hand surgery
    • Fracture care
    • Adult reconstructive surgery, including:
      • Total knee replacement
      • Total hip replacement
      • Total shoulder replacement
      • Hip and knee arthroscopy

For more information about Total Joint Replacement Program at UNM SRMC, please click here.

For patient iformation on other orthopaedic conditions, please click here.

UNM SRMC’s Orthopaedic Clinic works in conjunction with the Division of Orthopaedics & Rehabilitation at the University of New Mexico’s School of Medicine. With many of our providers also serving as professors at the UNM School of Medicine, our patients receive expert care from the state’s most knowledgeable orthopaedic teachers and leaders. For more information and patient resources, please visit the Division of Orthopaedics & Rehabilitation website.

Making an Appointment

The Orthopaedic clinic is open Monday through Friday with a variety of specialty clinics available throughout the week. To make an appointment, please call 505.994.7397.

For your appointment: Please remember to bring all relevant medical records, especially operative reports from previous surgeries, copies of recent X-Rays and MRIs related to your visit and a current list of all medications. If you are a new patient, you can download and fill out the New Patient History Form before your first appointment.

Orthopaedics Doctors

Eric Lew, MD

Eric Lew, MD

Dr. Lew joined UNM Orthopaedics in early September after completing a Diabetic Limb Salvage and Reconstructive Surgery Fellowship at the University of Arizona College of Medicine and the Southern Arizona Limb Salvage Alliance (SALSA) in Tucson. He is a graduate of Des Moines University College of Podiatric Medicine and Surgery in Iowa, and he completed a reconstructive foot and ankle surgery residency at Cleveland Clinic – Kaiser Permanente in Ohio. Lew will partner with UNM Vascular Surgery, UNM Orthopaedics and Diabetic Comprehensive Care Specialists in creating UNM Center for Healing In the Lower Extremity (CHILE), which focuses on limb salvage, wound healing and preserving the ambulatory status in patients with diabetes.

As the newest member of the UNM SRMC Orthopaedic team, Dr. Lew brings the much-needed service of Podiatry to Sandoval County. "It's so great to be a part of UNM SRMC. I really enjoy seeing patients here," said Dr. Lew. In time, he hopes to expand his practice and be able to spend even more time at UNM SRMC.


Urvij Modhia, MBBS, MD

After completing his orthopaedic residency in 2006, Dr. Modhia remained in India to work as an Assistant Professor in Orthopaedics until 2010. He moved to the United States in 2011 to obtain further specialty training in spine surgery, orthopaedic trauma and pediatric orthopaedics. He completed his spine surgery fellowship at the University of California San Francisco in 2012, his orthopaedic trauma fellowship at the University of New Mexico in 2013 and his pediatric orthopedic fellowship at the Johns Hopkins Hospital in Baltimore in 2014.

Dr. Modhia is a member of the North American Spine Society, the American Association of Orthopaedic Surgery and the Orthopaedic Trauma Association. In addition to serving as a faculty member at the UNM School of Medicine, Dr. Modhia also practices here at UNM Sandoval Regional Medical Center, where he enjoys working with a “highly efficient and supportive staff” that focuses on providing excellent patient care.

In his free time, Dr. Modhia enjoys hiking, bicycling and spending quality time with his family. Dr. Modhia is an enthusiastic and compassionate provider who enjoys helping others – he is a great asset to our Team here at UNM SRMC!


Dustin T. Briggs, MD

Dr. Briggs specializes in the treatment of hip and knee arthritis. His surgical spectrum of practice includes minimally invasive partial knee replacements (patellofemoral and unicompartmental arthroplasty), total hip and knee replacements, complex revisions of hip and knee replacements and periprosthetic fractures. In young patients who suffer from knee arthritis, Dr. Briggs also specializes in joint preservation, including osteotomies (bone and joint re-alignment) and cartilage restoration.

Dr. Briggs earned his medical degree from the University of Iowa and completed his orthopaedic surgery residency at the University of New Mexico (“corn raised, chile blazed”). He completed fellowship in Lower Extremity Reconstruction at Scripps Clinic, in La Jolla, California.

His research interests include the use of osteochondral allograft transplant for cartilage injuries of the knee, mechanical alignment and soft tissue balancing strategies during total knee arthroplasty, the use of computer (navigation) and robotic assistance for knee and hip replacements and the theory of low-carbohydrate diets for weight loss. He is a member of the American Association of Hip and Knee Surgeons and the American Academy of Orthopaedic Surgeons.

Dr. Briggs enjoys getting to know patients on a personal level. He has an enthusiasm for patient care and puts patients at ease during the often-stressful treatment of joint pain. His finds joy in helping his patients return to their hobbies and have a more active lifestyle following joint replacement surgery.


Charlotte Orr, MD

Dr. Orr joined UNM School of Medicine faculty in August of 2014, and practices general orthopaedic surgery at UNM Sandoval Regional Medical Center. Her areas of interest include knee and shoulder arthroscopy, knee and hip joint replacement, extremity fractures and various hand procedures such as carpal tunnel release.

Dr. Orr earned her undergraduate degree from Dartmouth College and medical degree from the University of Kentucky - "Go Cats!" She completed her orthopaedic surgery residency at the University of New Mexico.

 Dr. Orr is a board-eligible member of the Amercian Academy of Orthopaedic Suregons and has applied for trauma fellowship targeted to start in 2016. She has also been a member of the Ruth Jackson Orthopaedic Society since 2008. Her publications include patient information articles on the topics of nonossifying fibromas, soft tissue chondromas and adamantinoma or osteofibrous dysplasia.

Medical Director

Shane Cass, DO Medical Director

In addition to serving the community as a Board Certified primary care physician at SRMC, Dr. Cass is a team physician for the UNM Lobos, specializing in non-operative, primary care sports medicine. He is married with three children and said, "Practicing at SRMC represents the best of the community and university models of healthcare." He is excited to work in both worlds and continued to say, "The university model represents the highest level of care, specialization and training of physicians while the community model represents the patient-centered and friendly side of healthcare."


Cory Carlston, MD

Dr. Carlston specializes in hand and wrist surgery for patients of all ages. This includes treatment of fractures, lacerations of tendons, nerves, and vessels and complex trauma such as finger replantation. He also takes care of common pathologies such as carpal tunnel syndrome and cubital tunnel syndrome. He has an interest in complex wound reconstruction of the upper extremity as well.

Dr. Carlston earned his medical degree from the University of Utah. He completed his orthopaedic surgery residency at the University of Southern California and his hand surgery fellowship here at the University of New Mexico.

His research interests include surgical approaches for distal radius fractures, the anatomy and pathology of the first carpometacarpal joint and tendon lacerations. He is a member of the American Society for Surgery of the Hand and the American Academy of Orthopaedic Surgeons.