Accessibility Tools
Stephen K. Aoki, MD

Stephen K. Aoki, MD

Pediatric Orthopaedic Surgery

Dr. Stephen K. Aoki, Associate Professor, specializes in the surgical treatment of pediatric, adolescent, and adult sports injuries, primarily of the hip and knee. Dr. Aoki serves as team physician for University of Utah Gymnastics and University of Utah Football. He serves as Chair of the University of Utah Residency Selection Committee. Dr. Aoki received his undergraduate Bachelor of Arts degree at Harvard University. He completed his medical degree from Mount Sinai School of Medicine in New York City and subsequently completed his orthopaedic surgery residency and sports medicine fellowship at the University of Utah. Dr. Aoki practices both at the University Orthopaedic Center and Primary Children´s Hospital.

Dr. Aoki's hip practice focuses on joint preservation and hip arthroscopy. His surgical expertise includes the treatment of femoroacetabular impingement (FAI), labral tears, cartilage injuries, hip instability due to capsular insufficiency, and ischiofemoral impingement. He has done extensive research in the field of hip arthroscopy including technical articles focused on improving the surgical treatment of FAI and hip stability.

Dr. Aoki's knee practice focuses on both pediatric and adult injuries. His surgical expertise addresses ACL tears, patellar dislocations, ligament/tendon/cartilage injuries, meniscus tears, osteochondritis dissecans (OCD lesions), tibial spine fractures, and congenital discoid meniscus. He has a particular surgical interest in pediatric athletic injuries complicated by open growth plates.

Surgical Expertise: Hip Arthroscopy, Femoroacetabular Impingement, Hip Labral Repair and Reconstruction, Hip Capsular Repair and Reconstruction, Hip Preservation, Pediatric and Adult ACL Reconstructions, Patella Dislocations, Pediatric Sports Injuries, Osteochondritis Dissecans, Cartilage and Meniscus Tears.

For more information, please refer to website:

Board Certification and Academic Information

Academic Departments Orthopaedics - Associate Professor

Board Certification American Board of Orthopaedic Surgery

Research Interests

  • Hip Arthroscopy
  • Femoroacetabular Impingement
  • Hip Pain in the Young Adult
  • Pediatric Sports Medicine

Education History

Fellowship University of Utah School of Medicine
Sports Medicine

Residency University of Utah School of Medicine
Orthopedic Surgery

Internship University of Utah School of Medicine

Professional Medical Mount Sinai School of Medicine

Undergraduate Harvard College

Selected Publications - Journal Articles

Journal Article

  1. ONeill DC, Mortensen AJ, Tomasevich KM, Ohlsen SM, Adeyemi TF, Maak TG, Aoki SK (2021). Joint Venting Prior to Hip Distraction Minimizes Traction Forces During Hip Arthroscopy. (Epub ahead of print) Arthroscopy.
  2. Mortensen AJ, Philippi MT, Karns MR, Kahn TL, Adeyemi TF, Maak TG, Aoki SK (2020). A Narrow Posterior Joint Space on a False Profile Radiograph Does Not Correlate With Posterior Joint Cartilage Degeneration in Hip Preservation Patients. Arthroscopy, 36(12), 2984-2991.
  3. Mortensen AJ, ONeill DC, Adeyemi TF, Maak TG, Aoki SK (2020). A 2-Week Course of Naproxen for Heterotopic Ossification Prophylaxis Is Effective Following Hip Arthroscopy for Femoroacetabular Impingement. Arthrosc Sports Med Rehabil, 2(6), e789-e794.
  4. Atkins PR, Hananouchi T, Anderson AE, Aoki SK (2020). Inclusion of the Acetabular Labrum Reduces Simulated Range of Motion of the Hip Compared With Bone Contact Models. Arthrosc Sports Med Rehabil, 2(6), e779-e787.
  5. ONeill DC, Mortensen AJ, Cannamela PC, Aoki SK (2020). Clinical and Radiographic Presentation of Capsular Iatrogenic Hip Instability After Previous Hip Arthroscopy. Am J Sports Med, 48(12), 2927-2932.
  6. Mortensen AJ, Duensing I, Aoki SK (2020). Arthroscopic Femoral Osteochondroplasty for Cam-type Femoroacetabular Impingement: Cortical-Cancellous Sclerotic Boundary Guides Resection Depth. Arthrosc Tech, 9(9), e1309-e1314.
  7. Atkins PR, Fiorentino NM, Hartle JA, Aoki SK, Peters CL, Foreman KB, Anderson AE (2019). In Vivo Pelvic and Hip Joint Kinematics in Patients With Cam Femoroacetabular Impingement Syndrome: A Dual Fluoroscopy Study. J Orthop Res, 38(4), 823-833.
  8. Chalmers PN, Uffman W, Christensen G, Greis P, Aoki S, Nelson R, Yoo M, Tashjian RZ (2020). A single-institution analysis of factors affecting costs in the arthroscopic treatment of glenohumeral instability. JSES Int, 4(2), 297-301.
  9. Philippi MT, Kahn TL, Adeyemi TF, Maak TG, Aoki SK (2020). Leg dominance as a risk factor for femoroacetabular impingement syndrome. J Hip Preserv Surg, 7(1), 22-26.
  10. Lynch TS, Minkara A, Aoki S, Bedi A, Bharam S, Clohisy J, Harris J, Larson C, Nepple J, Nho S, Philippon M, Rosneck J, Safran M, Stubbs AJ, Westermann R, Byrd JWT (2019). Best Practice Guidelines for Hip Arthroscopy in Femoroacetabular Impingement: Results of a Delphi Process. J Am Acad Orthop Surg, 28(2), 81-89.
  11. Hananouchi T, Aoki SK (2020). Sclerotic lesions of the femoral head-neck junction for diagnosis of femoroacetabular impingement. Journal of Orthopaedic Surgery, 28(2), 2309499020924161.
  12. Cannamela PC, Maak TG, Adeyemi TF, Aoki SK (2019). Traumatic Pediatric Quadriceps Rupture After Medial Patellofemoral Ligament Reconstruction: A Case Report. JBJS Case Connect, 9(4), e0134.
  13. Murphy MM, Atkins PR, Kobayashi EF, Anderson AE, Maak TG, Nechyporenko AV, Aoki SK (2018). Assessment of Acetabular Morphology Using the Acetabular Anterior Center-Edge Angle on Modified False-Profile Radiographs. Arthroscopy, 35(11), 3060-3066.
  14. Bailey TL, Stephens AR, Adeyemi TF, Xu Y, Presson AP, Aoki SK, Maak TG (2018). Traction Time, Force and Postoperative Nerve Block Significantly Influence the Development and Duration of Neuropathy Following Hip Arthroscopy. Arthroscopy, 35(10), 2825-2831.
  15. Kapron AL, Aoki SK, Weiss JA, Krych AJ, Maak TG (2018). Isolated focal cartilage and labral defects in patients with femoroacetabular impingement syndrome may represent new, unique injury patterns. Knee Surg Sports Traumatol Arthrosc, 27(10), 3057-3065.
  16. Cannamela PC, Quinlan NJ, Maak TG, Adeyemi TF, Aoki SK (2019). Knee Extension Does Not Reliably Reduce Acute Type II Tibial Spine Fractures: MRI Evaluation of Displacement During Extension Versus Resting Flexion. Orthop J Sports Med, 7(7), 2325967119860066.
  17. Dukas AG, Gupta AS, Peters CL, Aoki SK (2019). Surgical Treatment for FAI: Arthroscopic and Open Techniques for Osteoplasty. Current Reviews in Musculoskeletal Medicine, 281-290.
  18. Uemura K, Atkins PR, Anderson AE, Aoki SK (2019). Do Your Routine Radiographs to Diagnose Cam Femoroacetabular Impingement Visualize the Region of the Femoral Head-Neck Junction You Intended? Arthroscopy, 35(6), 1796-1806.
  19. Atkins PR, Shin Y, Agrawal P, Elhabian SY, Whitaker RT, Weiss JA, Aoki SK, Peters CL, Anderson AE (2018). Which Two-dimensional Radiographic Measurements of Cam Femoroacetabular Impingement Best Describe the Three-dimensional Shape of the Proximal Femur? Clin Orthop Relat Res, 477(1), 242-253.
  20. Hananouchi T, Aoki SK (2019). Quantitative evaluation of capsular and labral resistances in the hip joint using a probing device. 30(3), 333-340.
  21. Marchand LS, Karns M, Higgins TF, Aoki SK (2019). Femoral Neck Fracture Fixation with a Medial Buttress Plate That Led to Impingement with Hip Flexion: A Case Report. JBJS Case Connect, 9(1), e21.
  22. Kapron AL, Karns MR, Aoki SK, Adeyemi TF, Baillargeon EA, Hartley MK, Todd JN, Maak TG (2018). Patient-Specific Parameters Associated With Traction in Primary and Revision Hip Arthroscopic Surgery. Orthop J Sports Med, 6(11), 2325967118807707.
  23. Philippi MT, Kahn TL, Adeyemi TF, Maak TG, Aoki SK (2018). Extracapsular local infiltration analgesia in hip arthroscopy patients: a randomized, prospective study. J Hip Preserv Surg, 5(3), 226-232.
  24. Karns MR, Jones DL, Todd DC, Maak TG, Aoki SK, Burks RT, Yoo M, Nelson RE, Greis PE (2018). Patient- and Procedure-Specific Variables Driving Total Direct Costs of Outpatient Anterior Cruciate Ligament Reconstruction. Orthop J Sports Med, 6(8), 2325967118788543.
  25. Wylie JD, Peters CL, Aoki SK (2018). Natural History of Structural Hip Abnormalities and the Potential for Hip Preservation. J Am Acad Orthop Surg, 26(15), 515-525.
  26. Faucett SC, Nepple JJ, Andrade T, Aoki S, Bedi A, Bharam S, Brick MJ, Byrd JWT, Cakic JN, Cascio BM, Christoforetti J, Clohisy JC, Domb B, Dumont G, Ellman MB, Harris JD, Kelly BT, Krych AJ, LaPrade RF, Larson C, Laskowski JR, Levy BA, Lynch TS, Martin HD, Mather C 3rd, Miyamoto RG, Nho SJ, ODonnell JM, Philippon MJ, Price MR, Ranawat AS, Rodriguez MC, Safran MR, Said HG, Salata MJ, Sampson T, Stubbs AJ, Uchida S, Villar RN, Willimon SC, Wolf A, Wong I, Wuerz TH, Yen YM (2018). Randomized Controlled Trial of Hip Arthroscopy Surgery vs Physical Therapy: Letter to the Editor. Am J Sports Med, 46(8), NP35-NP38.
  27. Karns MR, Adeyemi TF, Stephens AR, Aoki SK, Beese ME, Salata MJ, Maak TG (2018). Revisiting the Anteroinferior Iliac Spine: Is the Subspine Pathologic? A Clinical and Radiographic Evaluation. Clin Orthop Relat Res, 476(7), 1494-1502.
  28. Atkins PR, Kobayashi EF, Anderson AE, Aoki SK (2017). Modified False-Profile Radiograph of the Hip Provides Better Visualization of the Anterosuperior Femoral Head-Neck Junction. Arthroscopy, 34(4), 1236-1243.
  29. Jones DL, Philippi MT, Maak TG, Aoki SK (2018). Progressive osteoarthritis during pregnancy several years following hip arthroscopy for femoroacetabular impingement. J Orthop, 15(2), 475-479.
  30. Philippi MT, Kahn TL, Adeyemi TF, Maak TG, Aoki SK (2018). Extracapsular local infiltration analgesia in hip arthroscopy: a retrospective study. J Hip Preserv Surg, 5(1), 60-65.
  31. Wylie JD, Jenkins PA, Beckmann JT, Peters CL, Aoki SK, Maak TG (2017). Computed Tomography Scans in Patients With Young Adult Hip Pain Carry a Lifetime Risk of Malignancy. Arthroscopy, 34(1), 155-163.e3.
  32. Atkins PR, Fiorentino NM, Aoki SK, Peters CL, Maak TG, Anderson AE (2017). In Vivo Measurements of the Ischiofemoral Space in Recreationally Active Participants During Dynamic Activities: A High-Speed Dual Fluoroscopy Study. Am J Sports Med, 45(12), 2901-2910.
  33. Atkins PR, Aoki SK, Whitaker RT, Weiss JA, Peters CL, Anderson AE (2017). Does Removal of Subchondral Cortical Bone Provide Sufficient Resection Depth for Treatment of Cam Femoroacetabular Impingement? Clin Orthop Relat Res, 475(8), 1977-1986.
  34. Beebe MJ, Wylie JD, Bodine BG, Kapron AL, Maak TG, Mei-Dan O, Aoki SK (2017). Accuracy and Reliability of Computed Tomography and Magnetic Resonance Imaging Compared With True Anatomic Femoral Version. J Pediatr Orthop, 37(4), e265-e270.
  35. Aoki SK, Karns MR, Hananouchi T, Todd DC (2017). Hip Arthroscopy Capsular Closure: The Figure of Eight Technique. Arthrosc Tech, 6(2), e505-e509.
  36. Wylie JD, Kapron AL, Peters CL, Aoki SK, Maak TG (2017). Relationship Between the Lateral Center-Edge Angle and 3-Dimensional Acetabular Coverage. Orthop J Sports Med, 5(4), 2325967117700589.
  37. Wylie JD, Jones DL, Hartley MK, Kapron AL, Krych AJ, Aoki SK, Maak TG (2016). Distal Femoral Osteotomy for the Valgus Knee: Medial Closing Wedge Versus Lateral Opening Wedge: A Systematic Review. Arthroscopy, 32(10), 2141-2147.
  38. Aoki SK, Beckmann JT, Wylie JD (2016). Arthroscopic Femoral Osteochondroplasty for Cam-Type Femoroacetabular Impingement: The Trough Technique. Arthrosc Tech, 5(4), e743-e749.
  39. Brandenburg JB, Kapron AL, Wylie JD, Wilkinson BG, Maak TG, Gonzalez CD, Aoki SK (2016). The Functional and Structural Outcomes of Arthroscopic Iliopsoas Release. Am J Sports Med, 44(5), 1286-91.
  40. Anderson LA, Anderson MB, Kapron A, Aoki SK, Erickson JA, Chrastil J, Grijalva R, Peters C (2016). The 2015 Frank Stinchfield Award: Radiographic Abnormalities Common in Senior Athletes With Well-functioning Hips but Not Associated With Osteoarthritis. Clin Orthop Relat Res, 474(2), 342-52.
  41. Wylie JD, Hartley MK, Kapron AL, Aoki SK, Maak TG (2016). Failures and Reoperations After Matrix-Assisted Cartilage Repair of the Knee: A Systematic Review. Arthroscopy, 32(2), 386-92.
  42. Wylie JD, Beckmann JT, Maak TG, Aoki SK (2016). Arthroscopic Capsular Repair for Symptomatic Hip Instability After Previous Hip Arthroscopic Surgery. Am J Sports Med, 44(1), 39-45.
  43. Beckmann JT, Wylie JD, Potter MQ, Maak TG, Greene TH, Aoki SK (2015). Effect of Naproxen Prophylaxis on Heterotopic Ossification Following Hip Arthroscopy: A Double-Blind Randomized Placebo-Controlled Trial. J Bone Joint Surg Am, 97(24), 2032-7.
  44. Levy DM, Grzybowski J, Salata MJ, Mather RC 3rd, Aoki SK, Nho SJ (2015). Capsular Plication for Treatment of Iatrogenic Hip Instability. Arthrosc Tech, 4(6), e625-30.
  45. Wylie JD, Beckmann JT, Aoki SK (2015). Dislocation After Hip Arthroscopy for Cam-Type Femoroacetabular Impingement Leading to Progressive Arthritis: A Case Report. JBJS Case Connect, 5(3), e80-e7.
  46. Swenson KM, Erickson J, Peters C, Aoki SK (2015). Hip pain in young adults: diagnosing femoroacetabular impingement. JAAPA, 28(9), 39-45.
  47. Kapron AL, Aoki SK, Peters CL, Anderson AE (2015). In-vivo hip arthrokinematics during supine clinical exams: Application to the study of femoroacetabular impingement. J Biomech, 48(11), 2879-86.
  48. Hanson JA, Kapron AL, Swenson KM, Maak TG, Peters CL, Aoki SK (2015). Discrepancies in measuring acetabular coverage: revisiting the anterior and lateral center edge angles. J Hip Preserv Surg, 2(3), 280-6.
  49. Shea KG, Polousky JD, Jacobs JC Jr, Ganley TJ, Aoki SK, Grimm NL, Parikh SN (2015). The patellar insertion of the medial patellofemoral ligament in children: a cadaveric study. J Pediatr Orthop, 35(4), e31-5.
  50. Kapron AL, Peters CL, Aoki SK, Beckmann JT, Erickson JA, Anderson MB, Pelt CE (2015). The prevalence of radiographic findings of structural hip deformities in female collegiate athletes. Am J Sports Med, 43(6), 1324-30.
  51. Wylie JD, Abtahi AM, Beckmann JT, Maak TG, Aoki SK (2015). Arthroscopic and imaging findings after traumatic hip dislocation in patients younger than 25 years of age. J Hip Preserv Surg, 2(3), 303-9.
  52. Haller JM, Beckmann JT, Kapron AL, Aoki SK (2015). Detection of a traumatic arthrotomy in the pediatric knee using the saline solution load test. J Bone Joint Surg Am, 97(10), 846-9.
  53. Wylie JD, Hartley MK, Kapron AL, Aoki SK, Maak TG (2015). What is the effect of matrices on cartilage repair? A systematic review. Clin Orthop Relat Res, 473(5), 1673-82.
  54. Wylie JD, Beckmann JT, Maak TG, Aoki SK (2015). Arthroscopic treatment of mild to moderate deformity after slipped capital femoral epiphysis: intra-operative findings and functional outcomes. Arthroscopy, 31(2), 247-53.
  55. Kullar RS, Kapron AL, Ihnat D, Aoki SK, Maak TG (2015). Acetabular paralabral cyst: an unusual cause of femoral vein compression. Arthrosc Tech, 4(1), e35-40.
  56. Hung M, Hon SD, Cheng C, Franklin JD, Aoki SK, Anderson MB, Kapron AL, Peters CL, Pelt CE (2014). Psychometric Evaluation of the Lower Extremity Computerized Adaptive Test, the Modified Harris Hip Score, and the Hip Outcome Score. Orthop J Sports Med, 2(12), 2325967114562191.
  57. Kapron AL, Aoki SK, Peters CL, Anderson AE (2014). Subject-specific patterns of femur-labrum contact are complex and vary in asymptomatic hips and hips with femoroacetabular impingement. Clin Orthop Relat Res, 472(12), 3912-22.
  58. Jimenez CL, Beebe MJ, Maak TG, Aoki SK (2014). Acute severe hip pain associated with labral calcific deposition disease. Orthopedics, 37(12), e1137-40.
  59. Shea KG, Polousky JD, Jacobs JC Jr, Ganley TJ, Aoki SK, Grimm NL, Parikh SN (2014). The relationship of the femoral physis and the medial patellofemoral ligament in children: a cadaveric study. J Pediatr Orthop, 34(8), 808-13.
  60. Kapron AL, Aoki SK, Peters CL, Maas SA, Bey MJ, Zauel R, Anderson AE (2014). Accuracy and feasibility of dual fluoroscopy and model-based tracking to quantify in vivo hip kinematics during clinical exams. J Appl Biomech, 30(3), 461-70.
  61. Potter MQ, Wylie JD, Sun GS, Beckmann JT, Aoki SK (2014). Psychologic distress reduces preoperative self-assessment scores in femoroacetabular impingement patients. Clin Orthop Relat Res, 472(6), 1886-92.
  62. Beckmann JT, Wylie JD, Kapron AL, Hanson JA, Maak TG, Aoki SK (2014). The Effect of NSAID Prophylaxis and Operative Variables on Heterotopic Ossification After Hip Arthroscopy. Am J Sports Med, 42(6), 1359-64.
  63. Grimm NL, Weiss JM, Kessler JI, Aoki SK (2014). Osteochondritis dissecans of the knee: pathoanatomy, epidemiology, and diagnosis. Clin Sports Med, 33(2), 181-8.
  64. Potter MQ, Sun GS, Fraser JA, Beckmann JT, Swenson JD, Maak TG, Aoki SK (2014). Psychological distress in hip arthroscopy patients affects postoperative pain control. Arthroscopy, 30(2), 195-201.
  65. Price SL, Farukhi MA, Jones KB, Aoki SK, Randall RL (2013). Complications of cemented long-stem hip arthroplasty in metastatic bone disease revisited. Clin Orthop Relat Res, 471(10), 3303-7.
  66. Rothberg DL, Kubiak EN, Peters CL, Randall RL, Aoki SK (2013). Reducing the risk of bone cement implantation syndrome during femoral arthroplasty. Orthopedics, 36(4), e463-7.
  67. Grimm NL, Shea KG, Leaver RW, Aoki SK, Carey JL (2012). Efficacy and degree of bias in knee injury prevention studies: a systematic review of RCTs. Clin Orthop Relat Res, 471(1), 308-16.
  68. Aoki SK, Grimm NL, Ewing CK, Klatt JB, Shea KG (2013). Metaphyseal Screw Migration After Medial Patellofemoral Ligament Reconstruction in a Skeletally Immature Patient: A Case Report. JBJS Case Connect, 3(1), e28.
  69. Anderson LA, Kapron AL, Aoki SK, Peters CL (2012). Coxa profunda: is the deep acetabulum overcovered? Clin Orthop Relat Res, 470(12), 3375-82.
  70. Peters CL, Aoki SK, Erickson JA, Anderson LA, Anderson AE (2012). Early experience with a comprehensive hip preservation service intended to improve clinical care, education, and academic productivity. Clin Orthop Relat Res, 470(12), 3446-52.
  71. Kapron AL, Anderson AE, Peters CL, Phillips LG, Stoddard GJ, Petron DJ, Toth R, Aoki SK (2012). Hip internal rotation is correlated to radiographic findings of cam femoroacetabular impingement in collegiate football players. Arthroscopy, 28(11), 1661-70.
  72. Davis JJ, Swenson JD, Kelly S, Abraham CL, Aoki SK (2012). Anatomic changes in the inguinal region after hip arthroscopy: implications for femoral nerve block. J Clin Anesth, 24(7), 590-2.
  73. Aoki SK, Beckmann JT, Wylie JD (2012). Hip arthroscopy and the anterolateral portal: avoiding labral penetration and femoral articular injuries. Arthrosc Tech, 1(2), e155-60.
  74. Wilcox JJ, Snow BJ, Aoki SK, Hung M, Burks RT (2012). Does landmark selection affect the reliability of tibial tubercle-trochlear groove measurements using MRI? Clin Orthop Relat Res, 470(8), 2253-60.
  75. Klatt JB, Aoki SK (2012). The location of the medial humeral epicondyle in children: position based on common radiographic landmarks. J Pediatr Orthop, 32(5), 477-82.
  76. Aoki SK, Curtis SH (2011). Biomechanical evaluation of tibial eminence fractures using suture fixation. Orthopedics, 34(12), e866-70.
  77. Kapron AL, Anderson AE, Aoki SK, Phillips LG, Petron DJ, Toth R, Peters CL (2011). Radiographic prevalence of femoroacetabular impingement in collegiate football players: AAOS Exhibit Selection. J Bone Joint Surg Am, 93(19), e111(1-10).
  78. Shea KG, Grimm NL, Ewing CK, Aoki SK (2011). Youth sports anterior cruciate ligament and knee injury epidemiology: who is getting injured? In what sports? When? Clin Sports Med, 30(4), 691-706.
  79. Aoki SK, Anderson LA, Marchese JW (2011). Recession wedge osteotomy of the greater tuberosity for proximal humeral varus. Orthopedics, 34(5), 398.
  80. Gililland JM, Webber NP, Jones KB, Randall RL, Aoki SK (2011). Intratendinous tophaceous gout imitating patellar tendonitis in an athletic man. Orthopedics, 34(3), 223.
  81. Hamblin T, Curtis SH, DAstous J, Aoki SK (2010). Childhood obesity and low-velocity knee dislocation in a fifteen-year-old girl: a case report. J Bone Joint Surg Am, 92(12), 2216-9.
  82. Petron DJ, Greis PE, Aoki SK, Black S, Krete D, Sohagia KB, Burks R (2012). Use of knee magnetic resonance imaging by primary care physicians in patients aged 40 years and older. Sports Health: a multidisciplinary approach, 2(5), 385-90.
  83. Stevens PM, Aoki S, Olson P (2006). Ball-and-socket ankle. J Pediatr Orthop, 26(4), 427-31.
  84. Randall RL, Aoki SK, Olson PR, Bott SI (2006). Complications of cemented long-stem hip arthroplasties in metastatic bone disease. Clin Orthop Relat Res, 443, 287-95.

Book Chapter

  1. Mortensen A, Beckmann J, Maak TG, Aoki SK (2020). Hip Arthroscopy: Peritrochanteric Space Access. In Nho SJ, Bedi A, Salata MJ, Mather RC, Kelly BT (Eds.), Hip Arthroscopy and Hip Joint Preservation Surgery (2nd). Springer.
  2. Mortensen A, ONeill D, Aoki SK (2020). Hip Arthroscopy: Extensile Interportal Capsulotomy Closure. In Nho SJ, Bedi A, Salata MJ, Mather RC, Kelly BT (Eds.), Hip Arthroscopy and Hip Joint Preservation Surgery (2nd). Springer.
  3. Beckmann JT, Maak TG, Aoki SK (1/1/2015). Hip Arthroscopy: Peritrochanteric Space Access. In Nho SJ, Leunig M, Larson CM, Bedi A, Kelly BT (Eds.), Hip Arthroscopy and Hip Preservation Surgery (1st). Springer.

Case Report

  1. Mortensen AJ, Groundland JS, Tomasevich KM, Hobson TE, Randall RL, Aoki SK (2021). Ischial osteoid osteoma: A cause of persistent hip pain in an adolescent patient with bilateral femoroacetabular impingement. Radiology Case Reports, 16(5), 1037-1041.
  2. Beals TC, Severson EP, Kinikini D, Aoki S (2010). Complex Achilles reconstruction for massive soft tissue loss: allograft, autograft, and use of a temporary cement spacer. J Orthop Trauma, 24(8), e78-80.


  1. Aoki SK (2019). Editorial Commentary: Patient Profiling: Identifying Risk Factors That Help Predict Outcomes of Hip Arthroscopy Candidates. Arthroscopy, 35(11), 3057-3059.
  2. Aoki SK (2019). Editorial Commentary: Hip Arthroscopy Capsular Approaches: Periportal, Puncture, Interportal, T-Cut…Does It Really Matter? 35(4), 1128-1129.
  3. Aoki SK (2018). Editorial Commentary: Hip Arthroscopy for Femoroacetabular Impingement: Outcomes May Be Depressing. 34(8), 2375-2376.


  1. Parvaresh KC, Mather RC, Aoki SK, Nho SJ (2020). Regarding "Routine Interportal Capsular Repair Does Not Lead to Superior Clinical Outcome Following Arthroscopic Femoroacetabular Impingement Correction With Labral Repair". [Letter to the editor]. Arthroscopy, 36(7), 1788-1789.
  2. Aoki SK, Mortensen AJ (2020). Author Reply to "Modified False-Profile Radiographs: One Stone for Two Birds Should be Based on Correct Pelvic Rotation". [Letter to the editor]. Arthroscopy, 36(7), 1793-1794.
  3. Bhatia S, Ellman MB, Nho S, Mather RC 3rd, Bedi A, Aoki SK, Larson CM, Kelly B, Griffin DR, ODonnell J, Mei-Dan O (2018). Bilateral Hip Arthroscopy: Direct Comparison of Primary Acetabular Labral Repair and Primary Acetabular Labral Reconstruction. [Letter to the editor]. Arthroscopy, 34(6), 1748-1751.
  4. Brandenburg JB, Kapron AL, Aoki SK (2016). Arthroscopic Iliopsoas Release: Response. [Letter to the editor]. Am J Sports Med, 44(10), NP49-NP51.
  5. Grimm NL, Shea KG, Leaver RW, Aoki SK, Carey JL (2012). Reply to letter to the editor: efficacy and degree of bias in knee injury prevention studies: a systematic review of RCTs. [Letter to the editor]. Clin Orthop Relat Res, 471(1), 340.
  6. Grimm NL, Shea KG, Leaver R, Aoki SK, Carey JL (2012). Letter to the Editor. Efficacy and Degree of Bias in Knee Injury Prevention Studies: A Systematic Review of RCTs [Letter to the editor]. Clin Orthop Relat Res.

Videos & News

News Articles

Don't Force the Splits

The Scope & Other Podcasts

Severe Hip Pain But No Arthritis? Maybe It’s Hip Impingement

The Differences Between a Child’s and Adult’s Knee Injury

Stress Fractures

Rotator Cuff Injuries

Knee Sprains

Patellar Tendonitis

Physician Profile: Stephen Aoki

university-of-utah-pediatric-ortho Stephen K. Aoki, MD Profile in University of Utah Website

Stephen K. Aoki, MD Practice Location
  • Peds Ortho-Primary
    Children's Hospital

    100 N. Mario Capecchi Dr
    Suite 4550
    SLC UT 84113



Pediatric Orthopaedics Clinic locations

  • Idaho Falls Community Hospital Pediatric Specialty Center

    2330 Desoto Street
    Idaho Falls, ID 83404

    Tel :

  • Primary Children's Hospital (PCH)

    100 N. Mario Capecchi Drive
    Suite 4550,
    Salt Lake City, UT  84113

    Tel :

  • Lehi Primary Children’s Hospital

    250 N Miller Campus Dr
    Suite 300,
    Lehi, UT 84043

    Tel :

  • Utah Valley Outpatient Center (Provo)

    1157 N. 300 W.
    Suite 302,
    Provo, UT 84604

    Tel :

  • Layton Intermountain Hospital (Layton)

    201 W. Layton Parkway,
    Suite 3B,
    Layton, UT 84041

    Tel :

  • Outreach Clinic - Missoula MT

    2360 Mullan Rd
    Suite C,
    Missoula MT 59808

    Tel :

  • Outreach Clinic - St. George

    1380 E Medical Center Drive,
    Bldg 1; St.
    George UT 84790

    Tel :

  • Outreach Clinic - Moab

    Moab Regional Hosp,
    450 Williams Way,
    Moab UT 84532

    Tel :

  • Outreach Clinic - Blanding

    San Juan Health Dept.,
    735 S 200 W Ste 2,
    Blanding UT 84511

    Tel :

  • Outreach clinic - Vernal

    Tricounty Health Dept.,
    133 S 500 E,
    Vernal UT 84078

    Tel :

  • Outreach Clinic- Idaho Falls, ID

    Pediatric Specialty Clinic,
    Eastern ID Regional Medical Center,
    2330 Desoto St.
    Idaho Falls 83401

    Tel :