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Michael Craig Ain, MD

Director, Residency Training Program, Department of Orthopedic Surgery
Associate Professor of Orthopaedic Surgery

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Johns Hopkins Outpatient Center

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  • Director, Residency Training Program, Department of Orthopedic Surgery
  • Associate Professor of Orthopaedic Surgery
  • Associate Professor of Neurological Surgery


Achondroplasia, Clubfeet, Hip Dysplasia, Kyphosis, Orthopaedic Surgery, Orthopaedics, Pediatric Orthopaedics, Pediatric Spinal Deformity, Pediatric Trauma, Scoliosis, Skeletal Dysplasias, Spondylolisthesis, Spondyloysis

Research Interests

Skeletal dysplasias; Scoliosis; Achondroplasia; Pediatric trauma; Pediatric spinal deformities; Hip dysplasia; Pediatric spinal deformities


Dr. Michael Ain is an associate professor of orthopaedic surgery and neurological surgery at the Johns Hopkins School of Medicine. His areas of clinical expertise include achondroplasia, clubfeet, orthopaedic surgery, pediatric orthopaedics and skeletal dysplasias. Dr. Ain is the director of the Residency Training Program in the Department of Orthopaedic Surgery at Johns Hopkins.

Dr. Ain and his colleagues have developed groundbreaking surgical techniques for patients with spinal deformities and skeletal dysplasia, including the design of prostheses and instruments for people less than four feet tall and the use of pedicle screws instead of hooks and wires for scoliosis surgery.

Dr. Ain received his undergraduate degree in mathematics from Brown University. He earned his M.D. from Albany Medical College of Union University. He completed his residency at Albany Medical College and performed a fellowship in pediatric orthopaedic surgery at the Johns Hopkins Hospital.

Dr. Ain''s research interests include skeletal dysplasias, scoliosis, achondroplasia, pediatric trauma, pediatric spinal deformities, hip dysplasia and pediatric spinal deformities.


  • English

Additional Resources

Additional Resources +
  • Education +


    • Albany Medical College of Union University (Albany NY ) (1989)


    • Albany Medical College / Surgery (Albany NY ) (1995)


    • Johns Hopkins University School of Medicine / Pediatric Orthopaedic Surgery (Baltimore MD ) (1996)


    • Orthopaedic Surgery, American Board of Orthopaedic Surgery (2008)
  • Research & Publications +

    Research Summary

    Dr. Ain’s research focuses on the outcomes of surgical treatment on patients with skeletal dysplasias and on pediatric orthopaedics.

    Dr. Ain, along with residents and medical students, has published several papers on outcomes of patients with skeletal dysplasias. They have looked at the malalignment of lower extremities in achondroplasia, results of cervical fusion in patients with skeletal dysplasias and results of thoracolumbar fusions in patients with achondroplasia.

    His future research plans include looking at the natural history of low-back pain in achondroplasia, the outcomes of decompression in achondroplasia and the natural history of kyphosis in achondroplasia.

    Selected Publications View all on PubMed

    1. Hassanzadeh H, Jain A, El Dafrawy MH, Ain MC, Mesfin A, Skolasky RL, Kebaish KM. “Three-column osteotomies in the treatment of spinal deformity in adult patients 60 years old and older: outcome and complications.” Spine (Phila Pa 1976). 2013 Apr 20;38(9):726-31. doi: 10.1097/BRS.0b013e31827c2415.
    2. Richman JH, Mears SC, Ain MC. “Is the 22 modifier worth it?” Orthopedics. 2012 Aug 1;35(8):e1256-9. doi: 10.3928/01477447-20120725-29.
    3. Jain A, Erkula G, Leet AI, Ain MC, Sponseller PD. Implant-related fractures in children: A 15-year review. J Pediatr Orthop. 2012 Jul-Aug;32(5):547-52. doi: 10.1097/BPO.0b013e318259fe75.
    4. Leu D, Sargent MC, Ain MC, Leet AI, Tis JE, Sponseller PD. “Spica casting for pediatric femoral fractures: a prospective, randomized controlled study of single-leg versus double-leg spica casts.” J Bone Joint Surg Am. 2012 Jul 18;94(14):1259-64. doi: 10.2106/JBJS.K.00966
    5. Greenwald LJ, Yost MT, Sponseller PD, Abdullah F, Ziegfeld SM, Ain MC. “The role of clinically significant venous thromboembolism and thromboprophylaxis in pediatric patients with pelvic or femoral fractures.” J Pediatr Orthop. 2012 Jun;32(4):357-61. doi: 10.1097/BPO.0b013e31824b2a07.
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    Johns Hopkins Outpatient Center
    601 N. Caroline Street
    Baltimore, MD 21287
    Phone: 410-955-3135
    Appointment Phone: 443-997-2663
    Fax: 443-287-5995
    Location Map
    Johns Hopkins Bayview Medical Center
    4940 Eastern Avenue
    Baltimore, MD 21224
    Appointment Phone: 443-997-2663
    Location Map


    • Orthopaedic Surgery

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