Dr. Derrick Knapik | Sports Medicine | Washington University Orthopedics

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 has served as a team physician and taken care of athletes at the high school, collegiate and professional levels.

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

Washington University and Barnes-Jewish Orthopedic Center

14532 South Outer Forty Drive
Chesterfield, MO 63017
Center for Advanced Medicine - South County

5201 Midamerica Plaza, Suite 1500
St. Louis, MO 63129

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

Patient Education

Sports Medicine patient education

Patient Forms

Click here for patient forms.

Dr. Knapik has published over 80 peer-reviewed articles and book chapters. For a complete list of his peer-reviewed publications please click here.

Knapik DM, Mack CD, Lee R, Heersink W, Tanenbaum JE, Wetzel RJ, Voos JE. “The Incidence and Epidemiology of Tibial Fractures in Professional American Football Athletes from 2013 to 2019.” Accepted at Ortho. J. Sports Med. June 2021.
Singh H, Knapik DM, Gursoy S, Trasolini NA, Perry A, Chahla J. Functional Bracing Following Anterior Cruciate Ligament Reconstruction and Its Effects on Return to Sport: A Critical Analysis Review. Accepted at JBJS Reviews. June 2021.
Frank RM, Gilat R, Haunschild ED, Huddleston H, Patel S, Knapik DM, Drager J, Yanke AB, Cole BJ. “Do Outcomes of Meniscal Allograft Transplantation Differ Based on Age and Sex? A Comparative Group Analysis.” Accepted at Arthroscopy. May 2021.
Singh H, Isak I, Knapik DM, Vadhera A, Gursoy S, Cole BJ, Verma NN. No Patient Having Elective Outpatient Orthopaedic Surgery Performed in an Ambulatory Surgery Center Using Preoperative Screening Protocols During the Coronavirus Pandemic Developed COVID-19. Accepted Arthrosc Sports Med Rehabil. May 2021.
Knapik DM, Trasolini NT, Diaz CC, Chahla J, Forsythe B. Avulsion Injuries and Ruptures of the Proximal Rectus Femoris in Skeletally Mature, High-Level Athletes: A Critical Analysis Review. Accepted at JBJS Reviews. April 2021.
Singh H, Knapik DM, Polce EM, Eikani CK, Bjornstad AH, Gursoy S, Perry AK, Westrick JC, Yanke AB, Verma NN, Cole BJ, Chahla J. Relative Efficacy of Intra-articular Injections in the Treatment of Knee Osteoarthritis: A Network Meta-analysis. Accepted at Am. J. Sports Med. March 2021.
Knapik DM, Clapp I, Wichman D, Nho SJ. Younger Patient Age and Greater Anterior Center Edge Angle are Predictive of the Need for Bilateral Hip Arthroscopy in Patients Presenting with Bilateral Femoroacetabular Impingement Related Hip Pain. Accepted at Am. J. Sports Med. February 2021.
Knapik DM, Bach BR. Diagnosis of Biceps Instability: Observations on the Biceps Incarceration Maneuver. Accepted at Arthrosc Tech. January 2021.
Knapik DM, Farivar D, Kunze KN, Gilat R, Nho SJ, Chahla J. Prevalence, Indications and Outcomes Following Ligamentum Teres Reconstruction. Accepted at Arthrosc Sports Med Rehabil. January 2021.
Knapik DM, Kunze K, Azuna E, Yanke AB, Chahla J. Radiographic and Clinical Outcomes After Tibial Tubercle Osteotomy for the Treatment of Patella Alta: A Systematic Review and Meta-Analysis. Am. J. Sports Med. 2021 May 26;3635465211012371. Online ahead of print.
Benedick A, Knapik DM, Duren D, Sander JO, Cooperman DR, Liu RW. “Systematic Isolation of Key Parameters for Estimating Skeletal Maturity on Knee Radiographs.” J Bone Joint Surg Am. 2021 May 5;103(9):795-802.
McClellan PE, Kesavan LY, Wen Y, Ina J, Knapik DM. Gillepsie RJ, Akkus O, Webster-Wood VA. Volumetric microCT Intensity Histograms of Fatty Infiltration Predicts the Healing Strength of Rotator Cuff. Clin Orthop Relat Res. 2021 Feb 1;479(2):406-418.
Maheshwer B, Knapik DM, Polce E, LaPrade RF, Verma NN, Chahla J. The Contribution of Multimodal Analgesia to Post-operative Pain Outcomes Immediately Following Primary Anterior Cruciate Ligament Reconstruction: A Systematic Review and Meta-analysis of Level I Randomized Clinical Trials. Accepted at Am. J. Sports Med. 2021 Jan 7:363546520980429.
Gilat R, Levole-Gagne OZ, Haunschild ED, Knapik DM, Parvaresh KC, Fu M, Forsythe B, Verma NN, Cole BJ. “Outcomes of The Latarjet Procedure with Minimum 5- and 10-year Follow-up: A Systematic Review.” Shoulder Elbow. 2020 Oct;12(5):315-329.
Knapik DM, Williams B, Verma NN. “Balloon Spacers in the Management of Massive Rotator Cuff Tears: A Focus on Clinical Outcomes”. Ann Joint 2020. doi: 10.21037/aoj-20-35.
Gaal BT, Knapik DM, Karns MR, Salata MJ, Voos JE. “Contralateral Anterior Cruciate Ligament Injuries Following Index Reconstruction in the Pediatric Patient.” Curr Rev Musculoskelet Med. 2020 Aug;13(4):409-415
Knapik DM, Voos JE. “Anterior Cruciate Ligament Injuries in Skeletally Immature Patients: A Systematic Review Comparing Repair versus Reconstruction Techniques”. J Pediatr Orthop. 2020 Oct;40(9):492-502.
Gilat R, Haunschild ED, Levole-Gagne OZ, Tauro T, Knapik DM, Fu MC, Cole BJ. Outcomes of Free Bone Block Procedures for Anterior Shoulder Instability: A Systematic Review and Meta-Analysis. Am J Sports Med. 2021 Mar;49(3):805-816.
Knapik DM, Rizzone KH, Voos JE. “The Timing and Reason(s) Behind Single Sport Specialization in Soccer: A Survey of 64 Major League Soccer Athletes”. Sports Health. 2020 Apr 14:1941738120911373.
Knapik DM, Salata MJ, Voos JE, Greis PE, Karns MR. “Role of the Meniscofemoral Ligaments in the Stability of Posterior Lateral Meniscus Root Injuries in Anterior Cruciate Ligament Deficient Knee.” JBJS Rev. 2020 Jan;8(1):e0071
Knapik DM, Continenza SM, Hoffman K, Gilmore A. “Youth Baseball Coach Awareness of Pitch Count Guidelines and Overuse Throwing Injuries Remains Deficient.” J Pediatric Orthop. 2018 Nov/Dec;38(10):e623-e628.
Knapik DM, Patel SH, Wetzel RJ, Voos JE. “Prevalence and Management of Coracoid Fracture Sustained During Sporting Activities and Time to Return to Sport: A Systematic Review”. . Am J Sports Med. 2018;46(3):753-758.
Knapik DM, Gebhart JJ, Tanenbaum JE, Sheehan J, Salata ME, Voos JE. “Recurrent Labral Tearing on Magnetic Resonance Imaging Is Not Predictive of Diminished Participation Among National Football League Athletes.” Arthroscopy. 2018;34(1):66-72.
Knapik DM, Trem A, Sheehan J, Salata MJ, Voos JE. “Conservative Management for Stable High Ankle Injuries in Professional Football Players.” Sports Health. 2018;10(1):80-84.
Knapik DM, Gebhart JJ, Nho SJ, Tanenbaum JE, Voos JE, Salata MJ. “Incidence of Surgical Intervention for Athletic Pubalgia and Impact on Performance in Intact and Recurrent Tearing in Elite American Football Players.” Arthroscopy. 2017;33(5):1044-1049.

Research Interests

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

Background

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.

Board Certifications

Board-eligible, American Board of Orthopaedic Surgeons

Medical Degree

The Ohio State University School of Medicine, Columbus, OH

Residency

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

Fellowship

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

Washington University Orthopedics

Derrick Knapik, MD