Young Jo Kim

Young-Jo Kim, MD, PhD

Director, Child and Young Adult Hip Preservation Program; Director, Pediatric Orthopedic Fellowship

Professor of Orthopedic Surgery, Harvard Medical School

"Hip preservation surgery has now rapidly evolved into specialty onto itself. My current focus is on improving surgical education as well as helping set up large clinical trials to demonstrate the efficacy of our surgical procedures."

Medical Services


  • Arthroscopic Surgery
  • Developmental Hip Dysplasia
  • Femoral Anteversion
  • Orthopedics
  • Hip Dysplasia
  • Hip Impingement
  • Orthopedic Surgery
  • Orthopedics
  • Slipped Capital Femoral Epiphysis
  • Trauma
  • Adolescent and Young Adult Hip
  • Perthes
  • Infant Hip Disease
  • Hip Labral Tears


  • Orthopedic Center


  • English


  • Child and Young Adult Hip Preservation Program
  • General Orthopedic Program
  • Orthopedic Trauma Program
To schedule an appointment: Call 617-355-7497 or Request an Appointment
Young Jo Kim

Philosophy of Care 

I have always been interested in science and initially during my studies at MIT was intending to become a physicist or an electrical engineer. However, I was drawn to biomedical engineering and eventually orthopedic surgery during my graduate studies at MIT. During my graduate studies, my research focus was on understanding how mechanical forces affect cartilage biology. When I was contemplating what specialty to enter, I came upon the notion of using hip osteotomies to alter hip mechanics and perhaps prevent or slow down the progression of hip osteoarthritis. This would lead to a lifelong partnership between Dr. Michael Millis and myself.

Early on, I recognized that we needed a better imaging metric to understand how our surgeries can affect hip cartilage. Recognizing this, I established collaboration with Diego Jaramillo, Martha Gray and Deborah Burstein to implement a clinical protocol for delayed Gadolinium Enhanced MRI of Cartilage. To date this is the best protocol to understand the subtle biochemical changes that occur in cartilage with alterations in mechanics. Hip preservation surgery has now rapidly evolved into specialty onto itself. My current focus is on improving surgical education as well as helping set up large clinical trials to demonstrate the efficacy of our surgical procedures.

Experience and Education


Medical School

Harvard Medical School, 1994

Boston, Massachusetts


Beth Israel Hospital, 1994-1995

Boston, MA


Orthopedic Surgery - Harvard Combined Orthopedic Residency Program, 1995-1999

Boston, MA


Boston Children's Hospital, 1999-2000

Boston, MA


Texas Scottish Rite Hospital, 2000

Dallas, TX


  • Orthopedics

Professional History


  • 1993 - Kappa Delta Award of the American Academy of Orthopaedic Surgeons
  • 1995 - Harris Yett Award in General Surgery at the Beth Israel Hospital, Boston
  • 2007 - Kappa Delta Award, American Academy of Orthopedic Surgeons

Professional Societies (Active Member)

  • 1986 - Sigma Xi
  • 1990 - New York Academy of Sciences                    
  • 1994 - Orthopaedic Research Society    
  • 2000 - Massachusetts Medical Society   
  • 2000 - Osteoarthritis Research Society International 
  • 2001 -  Int Society for Magnetic Resonance in Medicine
  • 2003 - Pediatric Orthopaedic Society of North America
  • 2004 - American Academy of Orthopaedic Surgeons
  • 2005 - SICOT (The Int Society of Orthopaedic Surgery Traumatology)      
  • 2011 - Hip Society
  • 2012 - International Pediatric Orthopaedic Think Tank      
  • 2014 - International Hip Society

Leadership Positions

  • Editorial Board Member, Osteoarthritis and Cartilage
  • Editorial Board Member, Orthopedic Reviews
  • Editorial Board Member, Journal of Hip Preservation Surgery


Publications powered by Harvard Catalyst Profiles
  1. Hingsammer AM, Kalish LA, Stelzeneder D, Bixby S, Mamisch TC, Connell P, Millis MB, Kim YJ. Does periacetabular osteotomy for hip dysplasia modulate cartilage biochemistry? J Bone Joint Surg Am. 2015 Apr 1; 97(7):544-50.
  2. Kim YJ. CORR Insights(®): Modified Dunn Procedure is Superior to In Situ Pinning for Short-term Clinical and Radiographic Improvement in Severe Stable SCFE. Clin Orthop Relat Res. 2015 Jun; 473(6):2118-9.
  3. Kim YJ. Novel cartilage imaging techniques for hip disorders. Magn Reson Imaging Clin N Am. 2013 Feb; 21(1):35-44.
  4. Kim YJ, Novais EN. Diagnosis and treatment of femoroacetabular impingement in Legg-Calvé-Perthes disease. J Pediatr Orthop. 2011 Sep; 31(2 Suppl):S235-40.
  5. Kim YJ, Noonan KJ. What's new in pediatric orthopaedics. J Bone Joint Surg Am. 2010 Jun; 92(6):1575-82.
  6. Kim YJ, Noonan KJ. What's new in pediatric orthopaedics. J Bone Joint Surg Am. 2009 Mar 1; 91(3):743-51.
  7. Kim YJ, Bixby S, Mamisch TC, Clohisy JC, Carlisle JC. Imaging structural abnormalities in the hip joint: instability and impingement as a cause of osteoarthritis. Semin Musculoskelet Radiol. 2008 Dec; 12(4):334-45.
  8. Mamisch TC, Bittersohl B, Hughes T, Kim YJ, Welsch GH, Dudda M, Siebenrock KA, Werlen S, Trattnig S. Magnetic resonance imaging of the hip at 3 Tesla: clinical value in femoroacetabular impingement of the hip and current concepts. Semin Musculoskelet Radiol. 2008 Sep; 12(3):212-22.
  9. Kim YJ. Nonarthroplasty hip surgery for early osteoarthritis. Rheum Dis Clin North Am. 2008 Aug; 34(3):803-14.
  10. Sucato DJ, Kim YJ. What's new in pediatric orthopaedics. J Bone Joint Surg Am. 2008 Jun; 90(6):1401-11.
  11. Show all
  12. Espinosa N, Strassberg J, Belzile EL, Millis MB, Kim YJ. Extraarticular fractures after periacetabular osteotomy. Clin Orthop Relat Res. 2008 Jul; 466(7):1645-51.
  13. Gray ML, Burstein D, Kim YJ, Maroudas A. 2007 Elizabeth Winston Lanier Award Winner. Magnetic resonance imaging of cartilage glycosaminoglycan: basic principles, imaging technique, and clinical applications. J Orthop Res. 2008 Mar; 26(3):281-91.
  14. Beaulé PE, Clohisy JC, Schoenecker P, Kim YJ, Millis M, Trousdale RT. Hip arthroscopy: an emerging gold standard. Arthroscopy. 2007 Jun; 23(6):682.
  15. Felson DT, Kim YJ. The futility of current approaches to chondroprotection. Arthritis Rheum. 2007 May; 56(5):1378-83.
  16. Tiderius CJ, Jessel R, Kim YJ, Burstein D. Hip dGEMRIC in asymptomatic volunteers and patients with early osteoarthritis: the influence of timing after contrast injection. Magn Reson Med. 2007 Apr; 57(4):803-5.
  17. Kocher MS, Kasser JR, Waters PM, Bae D, Snyder BD, Hresko MT, Hedequist D, Karlin L, Kim YJ, Murray MM, Millis MB, Emans JB, Dichtel L, Matheney T, Lee BM. Lateral entry compared with medial and lateral entry pin fixation for completely displaced supracondylar humeral fractures in children. A randomized clinical trial. J Bone Joint Surg Am. 2007 Apr; 89(4):706-12.
  18. Cunningham T, Jessel R, Zurakowski D, Millis MB, Kim YJ. Delayed gadolinium-enhanced magnetic resonance imaging of cartilage to predict early failure of Bernese periacetabular osteotomy for hip dysplasia. J Bone Joint Surg Am. 2006 Jul; 88(7):1540-8.
  19. Kim YJ, Ganz R, Murphy SB, Buly RL, Millis MB. Hip joint-preserving surgery: beyond the classic osteotomy. Instr Course Lect. 2006; 55:145-58.
  20. Spencer S, Millis MB, Kim Y-J. Short Term Results of Surgical Treatment for Slipped Capital Femoral Epiphysis and Pistol Grip Deformity of the Femoral Head. J Pediatr Orthop. 2006.
  21. Kocher MS, Kim YJ, Millis MB, Mandiga R, Siparsky P, Micheli LJ, Kasser JR. Hip arthroscopy in children and adolescents. J Pediatr Orthop. 2005 Sep-Oct; 25(5):680-6.
  22. Leunig M, Beck M, Kalhor M, Kim YJ, Werlen S, Ganz R. Fibrocystic changes at anterosuperior femoral neck: prevalence in hips with femoroacetabular impingement. Radiology. 2005 Jul; 236(1):237-46.
  23. Kim YJ, Kassab F, Berven SH, Zurakowski D, Hresko MT, Emans JB, Kasser JR. Serum levels of nickel and chromium after instrumented posterior spinal arthrodesis. Spine (Phila Pa 1976). 2005 Apr 15; 30(8):923-6.
  24. Katz DA, Kim YJ, Millis MB. Periacetabular osteotomy in patients with Down's syndrome. J Bone Joint Surg Br. 2005 Apr; 87(4):544-7.
  25. Kocher MS, Bishop JA, Hresko MT, Millis MB, Kim YJ, Kasser JR. Prophylactic pinning of the contralateral hip after unilateral slipped capital femoral epiphysis. J Bone Joint Surg Am. 2004 Dec; 86-A(12):2658-65.
  26. Murphy S, Tannast M, Kim YJ, Buly R, Millis MB. Debridement of the adult hip for femoroacetabular impingement: indications and preliminary clinical results. Clin Orthop Relat Res. 2004 Dec; (429):178-81.
  27. Kocher MS, Bishop JA, Weed B, Hresko MT, Millis MB, Kim YJ, Kasser JR. Delay in diagnosis of slipped capital femoral epiphysis. Pediatrics. 2004 Apr; 113(4):e322-5.
  28. DiMicco MA, Patwari P, Siparsky PN, Kumar S, Pratta MA, Lark MW, Kim YJ, Grodzinsky AJ. Mechanisms and kinetics of glycosaminoglycan release following in vitro cartilage injury. Arthritis Rheum. 2004 Mar; 50(3):840-8.
  29. Kim YJ, Jaramillo D, Millis MB, Gray ML, Burstein D. Assessment of early osteoarthritis in hip dysplasia with delayed gadolinium-enhanced magnetic resonance imaging of cartilage. J Bone Joint Surg Am. 2003 Oct; 85-A(10):1987-92.
  30. Millis MB, Kim YJ. Rationale of osteotomy and related procedures for hip preservation: a review. Clin Orthop Relat Res. 2002 Dec; (405):108-21.
  31. Kim YJ, Otsuka NY, Flynn JM, Hall JE, Emans JB, Hresko MT. Surgical treatment of congenital kyphosis. Spine (Phila Pa 1976). 2001 Oct 15; 26(20):2251-7.
  32. Burstein D, Velyvis J, Scott KT, Stock KW, Kim YJ, Jaramillo D, Boutin RD, Gray ML. Protocol issues for delayed Gd(DTPA)(2-)-enhanced MRI (dGEMRIC) for clinical evaluation of articular cartilage. Magn Reson Med. 2001 Jan; 45(1):36-41.
  33. Buschmann MD, Kim YJ, Wong M, Frank E, Hunziker EB, Grodzinsky AJ. Stimulation of aggrecan synthesis in cartilage explants by cyclic loading is localized to regions of high interstitial fluid flow. Arch Biochem Biophys. 1999 Jun 1; 366(1):1-7.
  34. Quinn TM, Grodzinsky AJ, Buschmann MD, Kim YJ, Hunziker EB. Mechanical compression alters proteoglycan deposition and matrix deformation around individual cells in cartilage explants. J Cell Sci. 1998 Mar; 111 ( Pt 5):573-83.
  35. Kim YJ, Grodzinsky AJ, Plaas AH. Compression of cartilage results in differential effects on biosynthetic pathways for aggrecan, link protein, and hyaluronan. Arch Biochem Biophys. 1996 Apr 15; 328(2):331-40.
  36. Buschmann MD, Hunziker EB, Kim YJ, Grodzinsky AJ. Altered aggrecan synthesis correlates with cell and nucleus structure in statically compressed cartilage. J Cell Sci. 1996 Feb; 109 ( Pt 2):499-508.
  37. Kim YJ, Bonassar LJ, Grodzinsky AJ. The role of cartilage streaming potential, fluid flow and pressure in the stimulation of chondrocyte biosynthesis during dynamic compression. J Biomech. 1995 Sep; 28(9):1055-66.
  38. Kim YJ, Sah RL, Grodzinsky AJ, Plaas AH, Sandy JD. Mechanical regulation of cartilage biosynthetic behavior: physical stimuli. Arch Biochem Biophys. 1994 May 15; 311(1):1-12.
  39. Sandor T, Metcalf D, Kim YJ. Segmentation of brain CT images using the concept of region growing. Int J Biomed Comput. 1991 Nov; 29(2):133-47.
  40. Sah RL, Kim YJ, Doong JY, Grodzinsky AJ, Plaas AH, Sandy JD. Biosynthetic response of cartilage explants to dynamic compression. J Orthop Res. 1989; 7(5):619-36.
  41. Kim YJ, Sah RL, Doong JY, Grodzinsky AJ. Fluorometric assay of DNA in cartilage explants using Hoechst 33258. Anal Biochem. 1988 Oct; 174(1):168-76.
To schedule an appointment: Call 617-355-7497 or Request an Appointment


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