Derrick Knapik, MD

Assistant Professor, Orthopaedic Surgery

Division of Sports Medicine

Phone Icon

(314) 514-3500

Dr. Knapik specializes in treating all sports-related injuries of the knee and shoulder. He has special interests in orthobiologics, clinical and basic science research and patient-reported outcome metrics. Dr. Knapik cares for athletes at the high school, collegiate and professional levels, including the

Common Diagnoses Treated

  • Knee
    • Knee fractures
    • Knee malalignment
    • Multiligamentous injuries
    • Patellar instability
    • Patellar and quadriceps tendon rupture
  • Shoulder
    • AC joint injuries
    • Biceps tendon injuries
    • Clavicle fractures
    • Frozen shoulder
    • Labral and SLAP tears
    • Rotator cuff injuries
    • Shoulder fracture
    • Scapulothoracic bursitis
    • Shoulder arthroscopy
    • Shoulder impingement
    • Shoulder instability

Common Procedures

  • ACL and revision ACL surgery
  • Cartilage restoration surgery
  • Meniscus surgery and transplantation
  • Patellofemoral surgery
  • PCL surgery

Clinical Office Locations

Hospital Affiliations

  • Barnes-Jewish Hospital 
  • Washington University and Barnes-Jewish Hospital Orthopedic Center

Academic Office Mailing Address

  • Washington University School of Medicine

    Campus Box 8233

    660 Euclid Avenue

    St. Louis, MO 63110

MyChart Patient Portal

Dr. Knapik has published over 180 publications and has given 150 national and international presentations. For a complete list of his peer-reviewed publications please click here.

Research Interests

Efficacy of orthobiologics, cartilage restoration outcomes, rotator cuff repair augmentation, and patient outcomes following sports-related injuries.


Dr. Knapik earned his medical degree from The Ohio State University School of Medicine in Columbus, OH. He completed a residency in orthopaedic surgery from University Hospitals Cleveland Medical Center in Cleveland, OH, and then a fellowship in orthopaedic surgery sports medicine from Midwest Orthopaedics at Rush University in Chicago, IL. During his orthopaedic training, Dr. Knapik served as a team physician for numerous high school, college and professional sports teams and events. He currently provides care for the St. Louis Battlehawks and St. Louis City Soccer Club.

Board Certifications

  • Board-certified, American Board of Orthopaedic Surgeons 

Medical Degree

  • The Ohio State University School of Medicine, Columbus, OH


  • Orthopaedic Surgery, University Hospitals Cleveland Medical Center, Cleveland, OH


  • Orthopaedic Surgery Sports Medicine, Midwest Orthopaedics at Rush University, Chicago, IL

Honors and Awards

  • Behrooz Akbarnia Scientific e-Poster Award, Pediatric Orthopaedic Society of North America, July 2020
  • Best Poster Award, Orthopaedic Research Society Tendon Section Conference, November 2018
  • Cleveland Akron Orthopaedic Society Resident Essay Contest, September 2018
  • Ohio Orthopaedic Society Annual Meeting Resident Research Contest, May 2018
  • Best Poster Selection (Pediatrics), American Academy of Orthopaedic Surgeons Annual Meeting, March 2018
  • Ohio Shoulder and Elbow Society Resident Essay Contest, January 2018
  • Young Investigator Award, American Academy of Pediatrics National Conference, September 2017
  • Best Paper Award, Limb Lengthening and Reconstruction 26th Annual Meeting, July 2017

Professional Societies and Organizations

  • American Orthopaedic Society for Sports Medicine, Resident Member
  • Arthroscopy Association of North America, Fellow Member
  • SIGN Fracture Care International
  • American Academy of Orthopaedic Surgeons
  • Mid-American Orthopaedic Association
  • Osteoarthritis Research Society International
  • American Medical Association

Team Physician Coverage

  • Associate Team Physician Chicago Steel, Chicago, IL, August 2020-Present
  • Associate Team Physician Chicago White Sox, Chicago, IL, August 2020-Present
  • Associate Team Physician Chicago Bulls, Chicago, IL, August 2020-Present
  • Associate Team Physician DePaul University Basketball, Chicago, IL, August 2020-Present
  • Associate Team Physician Chicago State Basketball, Chicago, IL, August 2020-Present
  • Associate Team Physician Hawken High School Varsity Football, Gates Mills, OH, August 2015-January 2020
  • Associate Team Physician Orange High School Varsity Football, Orange, OH, August 2018-December 2018
  • Associate Team Physician Hawken High School Varsity Wrestling, Gates Mills, OH, November 2015-January 2020
  • Associate Event Physician, Cleveland Marathon, Cleveland, OH, May 2016, May 2017, May 2018, May 2019
  • Associate Event Physician USA Triathlon National Championship, Cleveland, OH, August 2018
  • Associate Event Physician Hawken High School Invitational Wrestling Tournament, Gates
    Mills, OH, December 2015, December 2016, December 2017, February 2018, December 2018
  • Associate Event Physician UWW Cadet and University National Wrestling National Championships, Akron OH, June 2017
  • Associate Team Physician Burning River Roller Derby, Cleveland, OH, September 2016-October 2016
  • Associate Team Physician Cleveland Central Catholic Basketball, Cleveland, OH, November 2015-March 2016
  • Associate Team Physician Lake Erie College Varsity Football, Painesville, OH, October 2015-December 2015
  • Associate Team Physician Benedictine High School Varsity Football, Cleveland, OH, August 2015-November 2015
  • Associate Team Physician Cleveland Height High School Varsity Football, Cleveland Heights, OH, August 2014-October 2014

Request an Appointment