Dr. Illingworth received his undergraduate degree from the University of Arizona and went on to get his medical degree from the University of Tennessee. He completed a two-year research fellowship at the prestigious University of Pittsburgh Department of Orthopaedics. During that time, his research focused on three-dimensional modeling and kinematics of the knee after anterior cruciate ligament reconstruction. He went on to complete his internship and orthopaedic residency at Southern Illinois University School of Medicine where he developed his passion for pediatric spinal deformity under the mentorship of Dr. Keith Gabriel. He completed his advanced training in pediatrics and pediatric spinal deformity at Children’s Hospital of Los Angeles under the mentorship of Drs. Tolo, Skaggs and Andras. Dr. Illingworth is board certified by American Board of Orthopaedic Surgery.
Dr. Illingworth has presented and lectured at national and international meetings on orthopaedic surgery, including pediatric spine surgery. He has published over 20 peer reviewed articles in orthopaedic surgery and has presented over 20 papers at national and international meetings.
Dr. Illingworth specializes in the non-operative and operative care of pediatric patients with complex spinal deformities. In addition to the care of pediatric spine patients, Dr. Illingworth is the director of the Orthopaedic Trauma program at Children’s Hospital of Los Angeles and has a special interest in pediatric skeletal trauma in patients who have reached or are near skeletal maturity.
Pediatric Spinal Deformity
Early Onset Scoliosis
Pediatric orthopaedic trauma
Transitional age trauma
University of Tennessee College of Medicine
Southern Illinois University School of Medicine, Orthopedic Surgery
Southern Illinois University School of Medicine Division of Orthopaedic Surgery, Orthopaedic Surgery
Pediatric Orthopaedic Fellowship- CHLA, Orthopedic Surgery
Research Fellowship- University of Pittsburgh
American Board of Orthopaedic Surgery- Board Certified
Top Ten Poster: Bone Bruise Area and the Presence of Meniscal Tears in Acute Anterior Cruciate Ligament Tears
International Pediatric Orthopaedic Symposium Top Gun Surgical Simulation: 1st place
2013 Resident Researcher of the year: Southern Illinois University School of Medicine
El Bitar Y, Illingworth KD, Scaife S, Saleh KJ. Hospital Length of Stay after Total Hip Arthroplasty: Data from the National Inpatient Sample Database. Journal of Arthroplasty. 2015 May 8. PMID: 26009468
Illingworth KD, El Bitar Y, Banarjee D, Scaife SL, Novicoff W, Saleh KJ. Inpatient Mortality after Primary Total Hip Arthroplasty: An Analysis from the National Inpatient Sample Database. Journal of Arthroplasty. 2015 Mar;30(3):369-73. PMID: 25529285
Hensler D, Illingworth KD, Musahl V, Working ZW, Kobayashi T, Witt M, Miyawaki M, Huard J, Fu FH. Does fibrin clot really enhance graft healing after double-bundle ACL reconstruction in a caprine model? Knee Surgery, Sports Traumatology, Arthroscopy. 2015 Mar;23(3):669-79. PMID: 25326761
Illingworth KD, Shaha S, Tzeng T, Sinha MS, Saleh KJ. The Impact of Tort Reform and Quality Improvements on Medical Liability Claims: A Tale of Two States. American Journal of Medical Quality. 2015 May;30(3):263-70. PMID: 24829153
Miyawaki M, Hensler D, Illingworth KD, Irrgang J, Fu FH. Signal intensity on magnetic resonance imaging after allograft double-bundle anterior cruciate ligament reconstruction. Knee Surgery, Sports Traumatology, Arthroscopy. 2014 May;22(5):1002-8. PMID: 24474586
Hensler D, Working ZM, Illingworth KD, Tashman S, Fu FH. Correlation between femoral tunnel length and tunnel position in ACL reconstruction. Journal of Bone and Joint Surgery. 2013 Nov 20;95(22). PMID: 24257661
Illingworth KD, Hensler D, Casagranda B, Borrero C, Fu FH. Relationship between Bone Bruise Volume and the Presence of Meniscal Tears in Acute Anterior Cruciate Ligament Tears. KSSTA. 2014 Sep;22(9):2181-6. PMID: 24002525
Hensler D, Miyawaki M, Illingworth KD, van Eck C, Irrgang J, Fu FH. Graft size after anterior cruciate ligament reconstruction. Knee Surgery, Sports Traumatology, Arthroscopy. 2014 May;22(5):995-1001. PMID: 23996107
Mitchelson AJ, Illingworth KD, Wilson CJ, Robinson BS, Scaife S, Saleh KJ, Gabriel K. Patient Demographics and Risk Factors in Pediatric Distal Humerus Supracondylar Fractures. Orthopedics. 2013 Jun;36(6):e700-6. PMID: 23746030.
Gupta A, Woods M, Illingworth KD, El-Amin SF. Single Walled Carbon Nanotube Poly Lactic-Co-Glycolic Acid Scaffolds for Bone Tissue Engineering. Journal of Orthopaedic Research. 2013 Sep;31(9):1374-81. PMID: 23629922.
Illingworth KD, Mihalko WM, Parvizi J, Sculco TP, El Bitar Y, Saleh KJ. How to Minimize Infection and Maximize Patient Outcomes in Total Joint Replacement: A Multicenter Approach. J Bone Joint Surg Am. 2013 Apr 17;95(8):e50. PMID: 23595076
Banarjee D, Illingworth KD, Novicoff W, Scaife SL, Jones B, Saleh KJ. Rural vs. Urban Utilization of Total Joint Arthroplasty. Journal of Arthroplasty. 2013 Jun;28(6):888-91. PMID: 23541869
Illingworth KD, Siewert K, El Bitar, Scaife SL, El-Amin S, Saleh KJ. Correlation of WOMAC and KOOS Scores to Tibiofemoral Cartilage Loss on Plane Radiography and 3 Tesla MRI: Data from the Osteoarthritis Initiative. Knee Surgery, Sports Traumatology, Arthroscopy. 2014 Jul;22(7):1649-58. PMID: 23338667
Saleh J, Patel P, Robinson B, Illingworth KD, Saleh KJ. Social Media in Orthopaedics: Where are we Headed? Orthopaedics. 2012 Apr;35(4):294-7. PMID: 22495836
Hensler D, Working ZM, Illingworth KD, Thorhauer ED, Tashman S and Fu FH. Medial Portal Drilling: Effects on the Femoral Tunnel Aperture Morphology During Anterior Cruciate Ligament Reconstruction. J Bone Joint Surg Am. 2011;93:2063-71. PMID: 22262377
Beck RT, Illingworth KD and Saleh KJ. Review of periprosthetic osteolysis in total joint arthroplasty: An emphasis on host factors and future directions. J Orthop Res. 2012 Apr;30(4):541-6. PMID: 21922533.
Illingworth KD, Hensler D, Working ZM, Macalena JA, Tashman S and Fu FH. A Simple Evaluation of Anterior Cruciate Ligament Femoral Tunnel Position: The Inclination Angle and Femoral Tunnel Angle. Am J Sports Med. 2011;39:2611-8. PMID: 21908719
Pediatric Spinal Deformity
Pediatric Transitional Age Trauma