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Michael Craig Ain, M.D.

Associate Professor of Orthopaedic Surgery


Appointment Phone


Main Location

Johns Hopkins Outpatient Center

Out-of-State & International Patients +
Out of State Patients

Call 410-464-6641 (8a.m. to 6p.m., EST, Mon-Fri)

Learn more about our out-of-state patient services »

International Patients

Call +1-410-502-7683 (7a.m. to 6p.m., EST, Mon-Fri)

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  • Associate Professor of Orthopaedic Surgery
  • Associate Professor of Neurosurgery



Johns Hopkins Outpatient Center

Appointment Phone: 443-997-2663

601 N. Caroline Street
5th Floor
Baltimore, MD 21287 map
Phone: 410-955-3135
Fax: 443-287-5995

Johns Hopkins Bayview Medical Center

Appointment Phone: 443-997-2663

4940 Eastern Avenue
Baltimore, MD 21224 map


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

Research Interests

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


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. more

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Dr. Michael Craig Ain

    Additional Information

  • Education +


    • Albany Medical College of Union University / MD (1989)


    • Albany Medical College / Surgery (1995)


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


    • American Board of Orthopaedic Surgery / Orthopaedic Surgery (1998)
  • 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

    Jain A, Brooks JT, Rao SS, Ain MC, Sponseller PD. Cervical fractures with associated spinal cord injury in children and adolescents: epidemiology, costs, and in-hospital mortality rates in 4418 patients. J Child Orthop. 2015;9(3):171-175.

    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.

    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.

    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.

    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

    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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