February Featured Author

Aaron J. Krych, MD
Program Director, Sports Medicine Fellowship
Program Director, Sports Medicine Research Fellowship
Mayo Clinic Orthopedic Surgery and Sports Medicine
Rochester, MN

From the February issue: Multicenter Analysis of Midterm Clinical Outcomes of Arthroscopic Labral Repair in the Hip: Minimum 5-Year Follow-up

Podcast: Listen to Dr. Krych discuss his article in the February issue.


Aaron Krych is Professor of Orthopedic Surgery and Sports Medicine at the Mayo Clinic in Rochester, MN, USA. He is also Director of the Orthopedic Surgery Sports Medicine Fellowship and Orthopedic Surgery Sports Medicine Research Fellowship.

He received his MD and Orthopedic Surgery Residency training at Mayo Clinic. He completed his sports fellowship training at Hospital for Special Surgery in New York in 2010. He was an ICRS Travelling Fellow in 2013. His clinical focus has been on cartilage restoration in the hip and knee, and knee osteotomy and meniscus transplant. His research interests include improving cartilage allograft, adipose-derived MSC injection for hip and knee arthritis, meniscus repair, and single stage cell-based cartilage repair.

Selected Published Work

Melugin H, Wu IT, Levy BA, Stuart MJ, Krych AJIs Treatment of Segond Fracture Necessary with Combined ACL Reconstruction?  Am J Sports Med. 2017 Dec 1:363546517745280. doi: 10.1177/0363546517745280. [Epub ahead of print] PMID: 29286825

Schilaty ND, Nagelli C, Bates NA, Sanders TL, Krych AJ, Stuart MJ, Hewett TE. Incidence of Second Anterior Cruciate Ligament Tears (2001 – 2010) and Associate Factors by Geographic LocaleOrthop J Sports Med. 2017 Aug 18;5(8):2325967117724196. doi: 10.1177/2325967117724196. eCollection 2017 Aug. PMID:28840155

Sanders TL, Christensen TC, Johnson NR, Hewett TE, Stuart MJ, Dahm DL, Krych AJIncidence of Acute Lateral Patellar Dislocation: A 21-Year Population-Based Study.  Sports Health. 2017 Aug 1:1941738117725055. doi: 10.1177/1941738117725055. [Epub ahead of print] PMID: 28795924

Schilaty ND, Bates NA, Sanders TL, Krych AJ, Stuart MJ, Hewett TE. Incidence of Second Anterior Cruciate Ligament Tears (1990 – 2000) and Associate Factors by Geographic LocaleAm J Sports Med. 2017 Jun; 45 (7):1567-1573. 2017 Mar 1:363546517694026. doi: 10.1177/0363546517694026. [Epub ahead of print] PMID: 28298067

Christensen TC, Sanders TL, Pareek A, Mohan R, Dahm DL, Krych AJRisk Factors and Time to Recurrent Ipsilateral and Contralateral Patellar Dislocation: A Population-Based Study.  Am J Sports Med. 2017 May 1:363546517704178. doi: 10.1177/0363546517704178. [Epub ahead of print] PMID:28463535.

Sanders TL, Pareek A, Obey MR, Johnson NR, Carey JL, Stuart MJ, Krych AJHigh Rate of Osteoarthritis following OCD Fragment Excision Compared to Surgical Restoration at a Mean 16-Year Follow-UpAm J Sports Med. 2017 Apr 1:363546517699846. doi: 10.1177/0363546517699846. [Epub ahead of print] PMID: 28419816

Amano K, Li A, Pedoia V, Krych AJ, Rodeo S, Li X, Ma CB, Majumdar S, AF-ACL Consortium. Surgical timing is related to changes seen in cartilage matrix composition after ACL reconstructionAm J Sports Med. 2017 Apr;45(5):1075-1084. doi: 10.1177/0363546516677794. Epub 2017 Jan 27. PMID: 28768432

Sanders TL, Pareek A, Johnson NR, Stuart MJ, Dahm DL, Krych AJPatellofemoral Arthritis after Lateral Patellar Dislocation: A Population-Based AnalysisAm J Sports Med. 2017 Apr;45(5):1012-1017. doi: 10.1177/0363546516680604 PMID: 28005405

Bryan AJ, Krych AJ, Pareek A, Reardon PJ, Berardelli R, Levy BA. Are Short-term Outcomes of Hip Arthroscopy in Patients Older than 55 Years Inferior to Younger Patients? Am J Sports Med 2016 Oct; 44 (10):2526-2530. pii: 0363546516652114. [Epub ahead of print] PMID: 27416992

Allen MM, Pareek A, Krych AJ, Hewett TE, Levy BA, Stuart MJ, Dahm DL. Are Female Soccer Players At An Increased Risk of Second Anterior Cruciate Ligament Injury Compared to Their Athletic Peers? Am J Sports Med 2016 Oct; 44 (10):2492-2498. pii: 0363546516648439. [Epub ahead of print] PMID: 27261476

Sanders T, Maradit Kremers H, Bryan A, Fruth K, Larson DR, Levy BA, Stuart MJ, Dahm DL, Krych AJ. Is ACL reconstruction effective in preventing secondary meniscal tears and osteoarthritis? Am J Sports Med 2016 Jul; 44 (7):1699-707. pii: 0363546516634325. [Epub ahead of print] PMID:26957217

Sanders T, Maradit Kremers H, Bryan A, Kremers WK, Levy BA, Dahm DL, Stuart MJ, Krych AJ. Incidence of and Factors Associated with the Decision to Undergo ACL Reconstruction One to Ten Years After InjuryAm J Sports Med. 2016 Jun;44(6):1558-64. doi: 10.1177/0363546516630751 PMID: 26928338

Sanders T, Maradit Kremers H, Bryan AJ, Larson DR, Dahm DL, Levy BA, Stuart MJ, Krych AJ. Incidence of anterior cruciate ligament tears and reconstruction: A 21 year population-based studyAm J Sports Med. 2016 Jun;44(6):1502-7. doi: 10.1177/0363546516629944 PMID: 26920430

Krych AJ, King AH, Bererdelli RL, Sousa PL, Levy BA. Is MRI Subchondral Edema with Cystic Change a contraindication for hip arthroscopy in patients with FAI?  Am J Sports Med. 2016 Feb;44(2):454-9. doi: 10.1177/0363546515612448. PMID:26620297

Krych AJ, Nawabi DH, Jones K, Farshad-Amacker NA, Maak TG, Potter HP, Williams, RJ, III. Bone Marrow Concentrate lmproves Early Scaffold Plug Cartilage Phase Maturation: A Comparative MRI AnalysisAm J Sports Med. 2016 Jan;44(1):91-8. PMID: 26574602

CL Camp, MJ Heidenreich, DL Dahm, MJ Stuart, BA Levy, Krych AJIndividualizing the Tibial Tubercle to Trochlear Groove Distance: Patellar Instability Ratios That Predict Recurrent Instability.  Am J Sports Med. 2016 Feb;44(2):393-9. doi: 10.1177/0363546515602483 PMID: 26394888

Christensen J, Krych AJ, Engasser W, Vanhees M, Collins MS, Dahm DL. Lateral tibial slope is increased with patients with early graft failure following ACL reconstruction.  Am J Sports Med. 2015 Oct;43(10):2510-4. PMID: 26320223

Krych AJ, Pitts RT, Dajani KA, Stuart MJ, Dahm DL, Levy BA. Surgical treatment of meniscal tears associated with anterior cruciate ligament reconstruction in pediatric patients.  Am J Sports Med. 2010 May;38(5):976-82.

Krych AJ, McIntosh AL, Voll AE, Stuart MJ, Dahm DL. Arthroscopic repair of isolated meniscal tears in patients 18 years and younger Am J Sports Med. 2008 Jul;36(7):1283-9


January Featured Author

Thomas J. Kremen, Jr., MD
Orthopaedic Surgeon, Cedars-Sinai Medical Center
Los Angeles, California

From the January issue: The Effect of Hamstring Tendon Autograft Harvest on the Restoration of Knee Stability in the Setting of Concurrent Anterior Cruciate Ligament and Medial Collateral Ligament Injuries

Podcast: Listen to Dr. Kremen discuss his article in the January issue.


Thomas Kremen, MD is a Board Certified Orthopaedic surgeon at Cedars-Sinai Medical Center in Los Angeles, California who specializes in Sports Medicine and Shoulder Surgery. He completed medical school and his residency training at the University of California, Los Angeles followed by fellowship training in Sports Medicine and Shoulder Surgery at Duke University. A former collegiate swimmer, he now serves as a team physician for USA Swimming and currently is the Chair of their Sports Medicine and Science Committee. His research has focused on the biomechanics of shoulder and knee reconstruction procedures, in vivo non-invasive imaging of therapeutic stem cells, and novel methods for improving the biology of healing musculoskeletal injuries. He has received research funding from the Orthopaedic Research and Education Foundation, the California Institute for Regenerative Medicine, as well as the American Orthopaedic Society for Sports Medicine. He serves as a member of the Electronic Media Editorial Board for the American Journal of Sports Medicine.

Selected Other Published Work in AJSM

Kremen TJ, Polakof LS, Rajaee S, Nelson TJ, Metzger MF. The effect of Hamstring Tendon Autograft Harvest on the Restoration of Knee Stability in the Setting of Anterior Cruciate Ligament Rupture and Concurrent Medial Collateral Ligament Injury. Am J Sports Med. 2017 Oct 1:363546517732743. PMID: 29048929

Neumann JA, Zgonis MH, Rickert KD, Bradley KE, Kremen TJ, Boggess BR, Toth AP. Interposition Dermal Matrix Xenografts: A Successful Alternative to Traditional Treatment of Massive Rotator Cuff Tears. Am J Sports Med. 2017 May;45(6):1261-1268. PMID: 28141953

Bernthal NM, Seeger LL, Motamedi K, Stavrakis AI, Kremen TJ, McAllister DR, Motamedi AR. Can the Reparability of Meniscus Tears be Predicted with MRI? Am J Sports Med. 2011 Mar;39(3):506-10. PMID: 21173193

December Featured Author

Andrew T. Pennock, MD

Rady Children’s Hospital
Associate Clinical Professor of Orthopaedic Surgery, University of California San Diego
San Diego, California

From the December issue: Segond Fractures Are Not a Risk Factor for Anterior Cruciate Ligament Reconstruction Failure

Podcast: Listen to Dr. Pennock discuss his article in the December issue.


Dr. Andrew Pennock is a pediatric and sports medicine surgeon at Rady Children’s Hospital-San Diego and an associate clinical professor at UC San Diego School of Medicine.

Graduating summa cum laude from Dartmouth College, where he was an All-American skier, Dr. Pennock went on to attend the University of Chicago Pritzker School of Medicine, where he graduated with honors and was a member of the Alpha Omega Alpha Honor Society. Upon completing his orthopedic residency and an orthopedic research fellowship at UC San Diego, he completed a sports medicine fellowship at the Steadman Clinic in Vail, Colorado, and a pediatric orthopedic fellowship at Rady Children’s.

Dr. Pennock primarily treats sports injuries in adolescents and young adults, with a special interest in knee, hip and shoulder injuries. He is also a team physician with the United States Ski Team, which he travels with on a regular basis.

Dr. Pennock continues to focus time on various research pursuits, including the developing hip as it pertains to femoroacetabular impingement and labral pathology, as well as pediatric and adolescent knee injuries.

Selected Other Published Work in AJSM

Are the Current Little League Pitching Guidelines Adequate? A Single-Season Prospective MRI Study. Pytiak AV, Stearns P, Bastrom TP, Dwek J, Kruk P, Roocroft JH, Pennock AT. Orthop J Sports Med. 2017 May 19; 5(5):2325967117704851.

The Pediatric/Adolescent Shoulder Survey (PASS): A Reliable Youth Questionnaire With Discriminant Validity and Responsiveness to Change. Edmonds EW, Bastrom TP, Roocroft JH, Calandra-Young VA, Pennock AT. Orthop J Sports Med. 2017 Mar 29;5(3):2325967117698466.

Does Allograft Augmentation of Small-Diameter Hamstring Autograft ACL Grafts Reduce the Incidence of Graft Retear? Pennock AT, Ho B, Parvanta K, Edmonds EW, Chambers HG, Roocroft JH, Bastrom TP. Am J Sports Med. 2017 Feb;45(2):334-338. doi: 10.1177/0363546516677545.

Are the Current Classifications and Radiographic Measurements for Trochlear Dysplasia Appropriate in the Skeletally Immature Patient? Stepanovich M, Bomar JD, Pennock AT. Orthop J Sports Med. 2016 Oct 24;4(10):2325967116669490.

Revision Meniscal Surgery in Children and Adolescents: Risk Factors and Mechanisms for Failure and Subsequent Management. Shieh AK, Edmonds EW, Pennock AT. Am J Sports Med. 2016 Apr;44(4):838-43. doi: 10.1177/0363546515623511.

Osteochondral allograft transplantation of the knee in the pediatric and adolescent population. Murphy RT, Pennock AT, Bugbee WD. Am J Sports Med. 2014 Mar;42(3):635-40. doi: 10.1177/0363546513516747.

Idiopathic Cam Morphology Is Not Caused by Subclinical Slipped Capital Femoral Epiphysis: An MRI and CT Study. Monazzam S, Bomar JD, Pennock AT. Orthop J Sports Med. 2013 Dec 6;1(7):2325967113512467. doi: 10.1177/2325967113512467. Corrigendum in: Orthop J Sports Med. 2014 Feb;2(2):2325967114525574.

Variation in tibial tubercle-trochlear groove measurement as a function of age, sex, size, and patellar instability. Pennock AT, Alam M, Bastrom T. Am J Sports Med. 2014 Feb;42(2):389-93. doi: 10.1177/0363546513509058.

Meniscus tear patterns in relation to skeletal immaturity: children versus adolescents. Shieh A, Bastrom T, Roocroft J, Edmonds EW, Pennock AT. Am J Sports Med. 2013 Dec;41(12):2779-83. doi: 10.1177/0363546513504286.

Prevalence of abnormal hip findings in asymptomatic participants: a prospective, blinded study. Register B, Pennock AT, Ho CP, Strickland CD, Lawand A, Philippon MJ. Am J Sports Med. 2012 Dec;40(12):2720-4. doi: 10.1177/0363546512462124.

The influence of arm and shoulder position on the bear-hug, belly-press, and lift-off tests: an electromyographic study. Pennock AT, Pennington WW, Torry MR, Decker MJ, Vaishnav SB, Provencher MT, Millett PJ, Hackett TR. Am J Sports Med. 2011 Nov;39(11):2338-46. doi: 10.1177/0363546510392710.

Does subchondral bone affect the fate of osteochondral allografts during storage? Pennock AT, Robertson CM, Wagner F, Harwood FL, Bugbee WD, Amiel D. Am J Sports Med. 2006 Apr;34(4):586-91.

Analysis of stored osteochondral allografts at the time of surgical implantation. Allen RT, Robertson CM, Pennock AT, Bugbee WD, Harwood FL, Wong VW, Chen AC, Sah RL, Amiel D. Am J Sports Med. 2005 Oct;33(10):1479-84.

November Featured Author

Raffy Mirzayan, MD

Co-Director of Sports Medicine
Director of Cartilage Repair and Restoration
Director of Resident Education
Department of Orthopaedic Surgery, Kaiser Permanente, Southern California
Clinical Professor of Orthopaedic Surgery
Keck School of Medicine, University of Southern California
Baldwin Park, California

From the November issue: Surgical Treatment of Distal Biceps Tendon Ruptures: An Analysis of Complications in 784 Surgical Repairs

Podcast: Listen to Dr. Mirzayan discuss his article in the November issue.


Dr. Raffy Mirzayan attained a Bachelor of Science degree from the University of California, Los Angeles with Departmental Honors in Kinesiology. He then graduated from the University of Southern California School of Medicine with Alpha Omega Alpha medical honors. He completed his residency in orthopaedic surgery at the Los Angeles County + University of Southern California Medical Center in Los Angeles, CA, where he was Chief Resident. He then completed a sports medicine fellowship at the prestigious Kerlan-Jobe Orthopaedic Clinic in Los Angeles.  Dr. Mirzayan is the Co-Director of Sports Medicine, Director of Cartilage Repair and Restoration, and Director of Resident Education at Kaiser Permanente, Baldwin Park, CA.  He also has a faculty appointment as Clinical Professor of Orthopaedic Surgery at the University of Southern California Keck School of Medicine.

Dr. Mirzayan has published three books in the field of orthopaedic surgery and sports medicine.  He is Co-Director of the ICJR Shoulder Course held annually in Las Vegas.

He has authored numerous peer-reviewed publications and book chapters. He has received several awards including the AOA-Zimmer Award, Vernon P. Thompson Award and DePuy Research Award.  He has presented his work at various national and international meetings.  He serves on several committees of local and national orthopaedic societies.  His orthopaedic interests include athletic injuries of the knee, shoulder, and elbow, including ligament repair and reconstruction, arthroscopy, and cartilage restoration and repair.

Selected Other Published Work in AJSM

Conroy C, Sethi P, Macken C, Wei D, Kowalsky M, Mirzayan R, Pauzenberger L, Dyrna F, Obopilwe E, Mazzocca AD. Augmentation of a Distal Biceps Repair with an Acellular Dermal Graft Restores Native Biomechanical Properties in a Tendon Deficient Model. Am J Sports Med. 2017 Jul; 45(9): 2028-2033; PMID: 28419811

Spragg LS, Chen J, Mirzayan R, Love RM, Maletis GB. The Effect of Autologous Hamstring Diameter on the Likelihood for Revision Anterior Cruciate Ligament Reconstruction. Amer J Sports Med. 2016; 44(6): 1475-81; PMID 27002103

October Featured Author

James L. Cook, DVM, PhD, OTSC

William & Kathryn Allen Distinguished Chair in Orthopaedic Surgery
Director, Thompson Laboratory for Regenerative Orthopaedics & Mizzou BioJoint Center
Chief, Orthopaedic Research Division
University of Missouri
Missouri Orthopaedic Institute
Columbia, Missouri

From the October issue: Effects of Autogenous Bone Marrow Aspirate Concentrate on Radiographic Integration of Femoral Condylar Osteochondral Allografts

Podcast: Listen to Dr. Cook discuss his article in the October issue.


After receiving his B.S. degree from Florida State University and competing for 5 years as a professional waterskier, Dr. James (Jimi) Cook completed his DVM in 1994 and PhD in 1998.  In 1999, he founded the Comparative Orthopaedic Laboratory at the University of Missouri, a multi-disciplinary team of physicians, veterinarians, engineers, and basic scientists dedicated to translational orthopaedic research, which has now been endowed and moved into its own 12,000 sq ft facility as the Thompson Laboratory for Regenerative Orthopaedics.  He has over 200 peer-reviewed publications, over $20 million in research funding, received numerous awards including America’s Best Veterinarian (2007), holds 18 patents and has seen 4 biomedical devices through FDA approval to human clinical trials.  He is currently Director of the Mizzou BioJoint Center, Director of The Thompson Laboratory for Regenerative Orthopaedics and the William and Kathryn Allen Distinguished Chair in Orthopaedic Surgery, and serves as Chief of the Division of Research for the Department of Orthopaedics at the University Hospital’s Missouri Orthopaedic Institute. He is also co-founder of Be The Change Volunteers ­a NGO dedicated to building schools in remote villages in the developing world whose teams have built 39 educational facilities in 16 countries, providing educational opportunities to more than 6,700 students.

Selected Other Published Work in AJSM

Stoker AM, Stannard JP, Kuroki K, Bozynski CC, Pfeiffer FM and Cook JL.  Validation of the Missouri Osteochondral Allograft Preservation System for the maintenance of osteochondral allograft quality during prolonged storage.Am J Sports Med 2017.

Cook JL, Stannard JP, Stoker AM, Bozynski CC, Kuroki K, Cook CR, Pfeiffer FM.  Importance of donor chondrocyte viability for osteochondral grafts. Am J Sports Med 2016; 44:1260-1268.

Fortier LA, Chapman HS, Pownder SL, Roller BL, Cross JA, Cook JL, Cole BJ. BioCartilage improves cartilage repair compared with microfracture alone in an equine model of full-thickness cartilage loss. Am J Sports Med 2016; 44:2366-2374.

Garrity JT, Stoker AM, Sims HJ, and Cook JL. Improved osteochondral allograft preservation using serum-free media at body temperature. Am J Sports Med 2012; 40:2542-2548.

Bian L, Stoker AM, Marberry KM, Ateshian GA, Cook JL, and Hung CT.  Effects of dexamethasone on the functional properties of cartilage explants during long-term culture. Am J Sports Med 2010; 38:78-85.

Cook JL, Fox DB. A novel bioabsorbable conduit augments healing of avascular meniscal tears in a dog model. Am J Sports Med 2007; 35:1877-1887.

Cook JL, Fox DB, Malaviya P, Tomlinson JL, Kuroki K, Cook CR, Kladakis S. Long-term evaluation of treatment of large meniscal defects using small intestinal submucosa in a dog model. Am J Sports Med 2006; 34:32-42.

Cook JL, Tomlinson JL, Kreeger JM, Cook CR. Induction of meniscal regeneration in dogs using a novel biomaterial. Am J Sports Med 1999; 27(5):658-665.

September Featured Author

Benjamin G. Domb, MD

Medical Director
American Hip Institute

From the September issue: Minimum 2-Year Outcomes of Hip Arthroscopic Surgery in Patients With Acetabular Overcoverage and Profunda Acetabulae Compared With Matched Controls With Normal Acetabular Coverage

Podcast: Listen to Dr. Domb discuss his article in the September issue.


Dr. Domb is a nationally recognized orthopaedic surgeon specializing in sports medicine and arthroscopic surgery of the hip. A noted pioneer in advanced new techniques in hip arthroscopy, he delivers innovative treatments for patients with hip injuries such as impingement and labral tears.

Dr. Domb has treated numerous professional athletes and served as team physician for professional sports teams. He takes pride in caring for each patient like a professional athlete, using the same meticulous approach to restore them to top-level performance in sports, work and day-to-day life.

As the author of more than 150 publications in the field of sports medicine, arthroscopic surgery and hip injuries, Dr. Domb lectures and teaches courses regularly for orthopaedic surgeons around the country.

Selected Other Published Work in AJSM

Arthroscopic Labral Base Repair in the Hip: 5-Year Minimum Clinical Outcomes. Domb BG, Yuen LC, Ortiz-Declet V, Litrenta J, Perets I, Chen AW. Am J Sports Med. 2017 Jul 1:363546517713731. doi: 10.1177/0363546517713731. [Epub ahead of print]

Do Ligamentum Teres Tears Portend Inferior Outcomes in Patients With Borderline Dysplasia Undergoing Hip Arthroscopic Surgery? A Match-Controlled Study With a Minimum 2-Year Follow-up. Chaharbakhshi EO, Perets I, Ashberg L, Mu B, Lenkeit C, Domb BG. Am J Sports Med. 2017 Jun 1:363546517710008. doi: 10.1177/0363546517710008. [Epub ahead of print]

Outcomes of Hip Arthroscopic Surgery in Patients With Tönnis Grade 1 Osteoarthritis at a Minimum 5-Year Follow-up: A Matched-Pair Comparison With a Tönnis Grade 0 Control Group. Domb BG, Chaharbakhshi EO, Rybalko D, Close MR, Litrenta J, Perets I. Am J Sports Med. 2017 Aug;45(10):2294-2302. doi: 10.1177/0363546517706957. Epub 2017 Jun 13.

Acetabular Chondral Lesions in Hip Arthroscopy: Relationships Between Grade, Topography, and Demographics. Suarez-Ahedo C, Gui C, Rabe SM, Chandrasekaran S, Lodhia P, Domb BG. Am J Sports Med. 2017 Jun 1:363546517708192. doi: 10.1177/0363546517708192. [Epub ahead of print]

Clinical Outcomes of Hip Arthroscopic Surgery: A Prospective Survival Analysis of Primary and Revision Surgeries in a Large Mixed Cohort. Domb BG, Gui C, Hutchinson MR, Nho SJ, Terry MA, Lodhia P. Am J Sports Med. 2016 Oct;44(10):2505-2517. Epub 2016 Sep 2.

Clinical Outcomes of Hip Arthroscopy in Radiographically Diagnosed Retroverted Acetabula. Hartigan DE, Perets I, Walsh JP, Close MR, Domb BG. Am J Sports Med. 2016 Oct;44(10):2531-2536. Epub 2016 Jul 20.

The Economic Impact of Acetabular Labral Tears: A Cost-effectiveness Analysis Comparing Hip Arthroscopic Surgery and Structured Rehabilitation Alone in Patients Without Osteoarthritis. Lodhia P, Gui C, Chandrasekaran S, Suarez-Ahedo C, Dirschl DR, Domb BG. Am J Sports Med. 2016 Jul;44(7):1771-80. doi: 10.1177/0363546516645532. Epub 2016 May 17.

Microfracture in the Hip: Results of a Matched-Cohort Controlled Study With 2-Year Follow-up. Domb BG, Gupta A, Dunne KF, Gui C, Chandrasekaran S, Lodhia P. Am J Sports Med. 2015 Aug;43(8):1865-74. doi: 10.1177/0363546515588174. Epub 2015 Jun 18.

Does Primary Hip Arthroscopy Result in Improved Clinical Outcomes?: 2-Year Clinical Follow-up on a Mixed Group of 738 Consecutive Primary Hip Arthroscopies Performed at a High-Volume Referral Center. Gupta A, Redmond JM, Stake CE, Dunne KF, Domb BG. Am J Sports Med. 2016 Jan;44(1):74-82. doi: 10.1177/0363546514562563. Epub 2015 Jan 28.

Does obesity affect outcomes in hip arthroscopy? A matched-pair controlled study with minimum 2-year follow-up. Gupta A, Redmond JM, Hammarstedt JE, Stake CE, Domb BG. Am J Sports Med. 2015 Apr;43(4):965-71. doi: 10.1177/0363546514565089. Epub 2015 Jan 23.

Arthroscopic acetabuloplasty and labral refixation without labral detachment. Redmond JM, El Bitar YF, Gupta A, Stake CE, Vemula SP, Domb BG. Am J Sports Med. 2015 Jan;43(1):105-12. doi: 10.1177/0363546514555330. Epub 2014 Nov 3. Erratum in: Am J Sports Med. 2015 Feb;43(2):NP1. Vemula, S Pavan [added].

Does the femoral cam lesion regrow after osteoplasty for femoroacetabular impingement? Two-year follow-up. Gupta A, Redmond JM, Stake CE, Finch NA, Dunne KF, Domb BG. Am J Sports Med. 2014 Sep;42(9):2149-55. doi: 10.1177/0363546514541782. Epub 2014 Jul 23.

August Featured Author

Robert F. LaPrade, MD, PhD

Complex Knee and Sports Medicine Surgery
The Steadman Clinic
Chief Medical Officer, Steadman Philippon Research Institute
Co-Director, Sports Medicine Fellowship Program
Director, International Scholar Program
Adjunct Professor, Orthopaedic Surgery, University of Minnesota
Affiliate Faculty, College of Veterinary Medicine and Biomedical Sciences, Colorado State University

From the August issue: Two-Tunnel Transtibial Repair of Radial Meniscus Tears Produces Comparable Results to Inside-Out Repair of Vertical Meniscus Tears

Podcast: Listen to Dr. LaPrade discuss his article in the August issue.


Robert F. LaPrade MD, PhD is a complex orthopaedic knee and sports medicine surgeon at The Steadman Clinic in Vail, Colorado. He serves as Chief Medical Officer and Co-director of the Sports Medicine Fellowship Program at the Steadman Philippon Research Institute. He is also the Sports Medicine Committee past-chair for the International Society for Arthroscopy, Knee Surgery, and Orthopaedic Sports Medicine (ISAKOS) and is on the Board of Directors of the Vail Valley Surgery Center. He is also on the Editorial Board of the American Journal of Sports Medicine (AJSM) and Knee Surgery, Sports Traumatology, Arthroscopy (KSSTA). Dr. LaPrade is known as one of the few specialists with extended expertise in the three main areas of medicine: expert clinical expertise, a lauded researcher, and an outstanding educator. Dr. LaPrade has treated athletes at all levels, including Olympic, professional (football, soccer, basketball, ice hockey, baseball, lacrosse, etc.), semi-professional and intercollegiate athletes and has returned many athletes back to full participation both after treating either their new injuries or previous failed knee surgeries. Dr. LaPrade has special expertise in treating posterolateral knee injuries, PCL tears, knee dislocations, revision ACL reconstructions, meniscal transplants, MCL injuries, knee osteotomies, fresh osteoarticular allografts, articular cartilage resurfacing procedures, complex patellofemoral instability, and other difficult combined and revision injuries. He has received many awards for his research, including the OREF Clinical Research Award, considered a Nobel Prize of Orthopaedics and his research team has been awarded the AOSSM Excellence in Research Award three times since 2009, The Achilles Research Award from ISAKOS two times, and the Cabaud Award by the AOSSM. In addition, Dr. LaPrade has also been Course Chair for courses sponsored by the AAOS, AOSSM, AANA, ISAKOS and ORS, including courses on Arthroscopic Skill Development, Biologics, Complex Sports Injuries, Knee Osteotomies, and Early Sports Specialization.

Selected Other Published Work in AJSM

A Comprehensive Reanalysis of the Distal Iliotibial Band: Quantitative Anatomy, Radiographic Markers, and Biomechanical Properties. Godin JA, Chahla J, Moatshe G, Kruckeberg BM, Muckenhirn KJ, Vap AR, Geeslin AG, LaPrade RFAm J Sports Med. 2017 Jun 1:363546517707961. doi: 10.1177/0363546517707961. [Epub ahead of print]

Two-Tunnel Transtibial Repair of Radial Meniscus Tears Produces Comparable Results to Inside-Out Repair of Vertical Meniscus Tears. Cinque ME, Geeslin AG, Chahla J, Dornan GJ, LaPrade RFAm J Sports Med. 2017 May 1:363546517704425. doi: 10.1177/0363546517704425. [Epub ahead of print]

Incidence and Detection of Meniscal Ramp Lesions on Magnetic Resonance Imaging in Patients With Anterior Cruciate Ligament Reconstruction. DePhillipo NN, Cinque ME, Chahla J, Geeslin AG, Engebretsen L, LaPrade RFAm J Sports Med. 2017 May 1:363546517704426. doi: 10.1177/0363546517704426. [Epub ahead of print]

Current Concepts of the Anterolateral Ligament of the Knee: Anatomy, Biomechanics, and Reconstruction. Kraeutler MJ, Welton KL, Chahla J, LaPrade RF, McCarty EC. Am J Sports Med. 2017 Apr 1:363546517701920. doi: 10.1177/0363546517701920. [Epub ahead of print]

Outcomes After 1-Stage Versus 2-Stage Revision Anterior Cruciate Ligament Reconstruction. Mitchell JJ, Chahla J, Dean CS, Cinque M, Matheny LM, LaPrade RFAm J Sports Med. 2017 Jul;45(8):1790-1798. doi: 10.1177/0363546517698684. Epub 2017 Apr 18.

Biomechanical Assessment of Hip Capsular Repair and Reconstruction Procedures Using a 6 Degrees of Freedom Robotic System. Philippon MJ, Trindade CAC, Goldsmith MT, Rasmussen MT, Saroki AJ, Løken S, LaPrade RFAm J Sports Med. 2017 Jul;45(8):1745-1754. doi: 10.1177/0363546517697956. Epub 2017 Apr 3.

Outcomes of Inside-out Meniscal Repair in the Setting of Multiligament Reconstruction in the Knee. Chahla J, Dean CS, Matheny LM, Mitchell JJ, Cinque ME, LaPrade RFAm J Sports Med. 2017 Mar 1:363546517698944. doi: 10.1177/0363546517698944. [Epub ahead of print]

The Proximal Tibiofibular Joint: A Biomechanical Analysis of the Anterior and Posterior Ligamentous Complexes. Marchetti DC, Moatshe G, Phelps BM, Dahl KD, Ferrari MB, Chahla J, Turnbull TL, LaPrade RFAm J Sports Med. 2017 Jul;45(8):1888-1892. doi: 10.1177/0363546517697288. Epub 2017 Mar 24.

Outcomes After Biologically Augmented Isolated Meniscal Repair With Marrow Venting Are Comparable With Those After Meniscal Repair With Concomitant Anterior Cruciate Ligament Reconstruction. Dean CS, Chahla J, Matheny LM, Mitchell JJ, LaPrade RFAm J Sports Med. 2017 May;45(6):1341-1348. doi: 10.1177/0363546516686968. Epub 2017 Feb 1.

Posterior Meniscal Root Repairs: Outcomes of an Anatomic Transtibial Pull-Out Technique. LaPrade RF, Matheny LM, Moulton SG, James EW, Dean CS. Am J Sports Med. 2017 Mar;45(4):884-891. doi: 10.1177/0363546516673996. Epub 2016 Dec 5.

Multiple Ligament Reconstruction Femoral Tunnels: Intertunnel Relationships and Guidelines to Avoid Convergence. Moatshe G, Brady AW, Slette EL, Chahla J, Turnbull TL, Engebretsen L, LaPrade RFAm J Sports Med. 2017 Mar;45(3):563-569. doi: 10.1177/0363546516673616. Epub 2016 Nov 24.

Overlap Between Anterior Cruciate Ligament and Anterolateral Meniscal Root Insertions: A Scanning Electron Microscopy Study. Steineman BD, Moulton SG, Haut Donahue TL, Fontboté CA, LaPrade CM, Cram TR, Dean CS, LaPrade RFAm J Sports Med. 2017 Feb;45(2):362-368. doi: 10.1177/0363546516666817. Epub 2016 Oct 13.

Anatomic Anterolateral Ligament Reconstruction Leads to Overconstraint at Any Fixation Angle: Response. Schon JM, Moatshe G, Brady AW, Cruz RS, Chahla J, Dornan GJ, Turnbull TL, Engebretsen L, LaPrade RFAm J Sports Med. 2016 Oct;44(10):NP58-NP59.

Hip Capsular Closure: A Biomechanical Analysis of Failure Torque. Chahla J, Mikula JD, Schon JM, Dean CS, Dahl KD, Menge TJ, Soares E, Turnbull TL, LaPrade RF, Philippon MJ. Am J Sports Med. 2017 Feb;45(2):434-439. doi: 10.1177/0363546516666353. Epub 2016 Oct 1.

International Meniscus Reconstruction Experts Forum (IMREF) 2015 Consensus Statement on the Practice of Meniscal Allograft Transplantation. Getgood A, LaPrade RF, Verdonk P, Gersoff W, Cole B, Spalding T; IMREF Group. Am J Sports Med. 2016 Aug 25. pii: 0363546516660064. [Epub ahead of print]

Intertunnel Relationships in the Tibia During Reconstruction of Multiple Knee Ligaments: How to Avoid Tunnel Convergence. Moatshe G, Slette EL, Engebretsen L, LaPrade RFAm J Sports Med. 2016 Nov;44(11):2864-2869. Epub 2016 Jul 28.

Anatomic Anterolateral Ligament Reconstruction of the Knee Leads to Overconstraint at Any Fixation Angle. Schon JM, Moatshe G, Brady AW, Serra Cruz R, Chahla J, Dornan GJ, Turnbull TL, Engebretsen L, LaPrade RFAm J Sports Med. 2016 Oct;44(10):2546-2556. Epub 2016 Jul 12.

In Vivo Length Changes of the Anterolateral Ligament and Related Extra-articular Reconstructions. Van de Velde SK, Kernkamp WA, Hosseini A, LaPrade RF, van Arkel ER, Li G. Am J Sports Med. 2016 Oct;44(10):2557-2562. Epub 2016 Jun 23.

Biologic Treatments for Sports Injuries II Think Tank-Current Concepts, Future Research, and Barriers to Advancement, Part 1: Biologics Overview, Ligament Injury, Tendinopathy. LaPrade RF, Geeslin AG, Murray IR, Musahl V, Zlotnicki JP, Petrigliano F, Mann BJ. Am J Sports Med. 2016 Dec;44(12):3270-3283. Epub 2016 Mar 29.

An In Vitro Robotic Assessment of the Anterolateral Ligament, Part 2: Anterolateral Ligament Reconstruction Combined With Anterior Cruciate Ligament Reconstruction. Nitri M, Rasmussen MT, Williams BT, Moulton SG, Cruz RS, Dornan GJ, Goldsmith MT, LaPrade RFAm J Sports Med. 2016 Mar;44(3):593-601. doi: 10.1177/0363546515620183. Epub 2016 Feb 1.