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Dr. Sean Gallagher, MD – Orthopedic Surgeon | ATX Orthopedics

Dr. Sean Gallagher, MD is a board-certified orthopedic surgeon in Austin, Texas specializing in muscle-preserving hip and knee replacement, arthritis care, and advanced joint reconstruction. Practicing at ATX Orthopedics, Dr. Gallagher provides surgical and non-surgical orthopedic solutions for patients seeking personalized, evidence-based care. His practice welcomes self-pay patients and out of network patients, offering transparent pricing, second opinions, and individualized treatment plans for each patient.  He is a leading expert in quad-sparing (subvastus) knee replacement and personalized, kinematic alignment, techniques designed to restore natural motion and speed recovery. In partnership with Dr. Devin Peck, Dr. Gallagher utilizes a unique pre-operative protocol including iovera° cryoablation and RF ablation 7–14 days before surgery to ensure ultra-low narcotic recovery. At ATX Orthopedics, Dr. Gallagher also performs SuperPATH hip replacements and complex revisions. A fellowship-trained specialist from the Scripps Clinic, he is dedicated to helping Austin patients return to active lifestyles through advanced, personalized surgical excellence.

Expertise & Specialties

  • Total Hip Replacement (including SuperPATH Approach)

  • Total Knee Replacement & Partial Knee Replacement

  • Hip & Knee Arthritis Treatment

  • Joint Replacement Second Opinions

  • Complex Joint Reconstruction

  • ACL Reconstruction
  • Arthroscopic Surgery of the Knee and Shoulder

  • Non-Surgical Orthopedic Management

  • Patient-Centered Pre-Operative Planning

Professional Philosophy

At ATX Orthopedics, my goal is to provide thoughtful, patient-centered orthopedic care with clear communication and transparent decision-making. Patients deserve to fully understand their diagnosis, treatment options, and expected outcomes, whether they are pursuing surgery, non-surgical care, or a second opinion.

Education & Board Certification

  • NBPAS Board-Certified Orthopedic Surgeon

  • MD: University of Texas Medical School at San Antonio

  • Residency: University of Texas Medical Branch at Galveston

  • Fellowship: Scripps Clinic La Jolla, CA Hip/Knee or Joint Reconstruction Fellowship

  • Professional Memberships: Texas Medical Association

(512) 960-4590
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About Dr. Gallagher

At ATX Orthopedics, which serves Central Austin, Texas, Dr. Sean Gallagher provides orthopedic care. Dr. Gallagher was born and raised in Galveston, TX (a B.O.I. (Born on the Island)). He attended public school in the Galveston Independent School District, graduating in 1997 from Ball High School with Highest Honors. He then moved to Providence, Rhode Island, to attend Brown University. At Brown, Dr. Gallagher was involved in research on neural plasticity and continued this as a research technician at UT Southwestern Center for Neuroscience in Dallas after graduating from Brown with Honors in 2001.

In 2002, he began medical school at The University of Texas Health Science Center Medical School at San Antonio. There, he met his wife, Ava, a pediatrician at 411 Pediatrics in Austin. They enjoyed living in the Hill Country during medical school and planned to return after finishing further training. Dr. Gallagher matched in orthopaedic surgery residency at The University of Texas Medical Branch in Galveston in 2006.

At UTMB, he became involved in clinical research and published his work in the orthopaedic literature. In 2011, Dr. Gallagher completed his general orthopaedic training and decided to pursue further expertise in Lower Extremity Reconstruction, Joint Replacement (including revision hip and knee arthroplasty), and Cartilage Transplantation (Fresh Osteochondral Allograft Transplantation) at Scripps Clinic in La Jolla, California. Fellowship in orthopedic surgery is one or two additional years of intense surgical training and clinical research focused on a specialty within the field.

In August 2012, Dr. Gallagher and his wife Ava relocated to Austin, TX, to be closer to family. They have three children and two 9 year old pug siblings, a 1 year old Lab, and an orange tabby cat.

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Last updated on January 15th, 2026