Summary: Patella resurfacing (versus no resurfacing) leads to significant improvement in functional outcomes, but incurs greater cost compared to occasional secondary resurfacing.

INTRODUCTION.
Although the number of total knee replacements (TKR) is rising, the uncertainty of the benefits of patella resurfacing is reflected by the split in operative practices of knee surgeons. Three surgeon cohorts include ‘always, ‘never’ and ‘selective’ resurfacers. We would like to present our findings to facilitate decision making in patella resurfacing.

METHODS.
We retrospectively reviewed joint arthroplasty database in our institution from January 2015-August 2020. All primary TKR were included and divided into two cohorts: TKR with resurfaced patella (RP) and unresurfaced patella (URP). The data was analysed for clinical outcomes, complications, revisions (patella resurfacing as a secondary procedure) and related costs.

RESULTS.
We identified 2700 TKRs (RP cohort–960 and URP–1740). Patients’ average age was 70 years (23-95), 73% females. The average follow-up was 40 months (3-69, median 43). Complication rate and mortality in RP versus URP groups were 1.2% vs 1.9% and 1.1% vs 1.4%, respectively. In URP–10 cases (0.58%) underwent patella-related procedures, while in RP group–0%. Hence, 174 TKRs needed to undergo primary resurfacing (£120/procedure; total £20,880) to avoid one secondary resurfacing procedure (£2,200/procedure). All secondary patella resurfacings were in ‘selective’ group of surgeons. Oxford Knee Score (OKS) improved from pre-operative to 1 year post-TKR from 18 to 42 and 18 to 38 in RP and URP, respectively. The post-operative OKS scores were statistically and clinically superior in RP versus URP cohort (p<0.001 and Minimal Clinically-Important Difference–4). Secondary patella resurfacing led to improvement in OKS, although failed to reach the improvement of primary RP cohort.

CONCLUSIONS.
Patella resurfacing (versus no resurfacing) was found to lead to significant improvement in functional outcomes. However, while avoiding a secondary procedure with its risks, the cost of routine patella resurfacing as a primary procedure was higher than occasional secondary resurfacing. Therefore, each case needs bespoke consideration, as clinical and financial factors need to be balanced.

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Second Anterior Cruciate Ligament Injury Rates In Younger Athletes Advised To Delay Their Return To Sport ePoster Presentation Kate E. Webster, PhD, AUSTRALIA Julian A. Feller, FRACS, FAOrthA, AUSTRALIA Haydn Klemm, BFSc&Nutr (Hons), AUSTRALIA
Outcomes of Medial Patellofemoral Ligament Reconstruction for Recurrent Patellar Instability in Patients with Ehlers-Danlos Syndrome Abstract Presentation 5 minutes James Nemunaitis, DO, UNITED STATES Shital N. Parikh, MD, UNITED STATES
The Influence Of Patellar Erosion On Knee Range Of Motion Following Unicompartmental Knee Arthroplasty ePoster Presentation Dylan Singh, BSc, UNITED STATES Samantha Andrews, PhD, UNITED STATES Dylan Lawton, BS, UNITED STATES Kyle Kosei Obana, BA, UNITED STATES Cass K. Nakasone, MD, FACS, UNITED STATES
Primary Constrained-Condylar-Knee Designs Outperform Posterior-Stabilized And Cruciate-Retaining Designs In High Grade Varus Osteoarthritic Knees ePoster Presentation William Leo Colyn, MD, BELGIUM Jef Neirynck, MD, BELGIUM Liesbeth Bruckers, Msc, BELGIUM Johan Bellemans, MD, PhD, BELGIUM
Biomechanical Evaluation Of Two Non-Anatomic Patellar Fixation Techniques In Medial Patellofemoral Ligament Reconstruction ePoster Presentation Vasileios Raoulis, MD, PhD, GREECE Apostolos Fyllos, MD, PhD, GREECE Maria Dimitra Chiotelli, Dipl.Εngineer, GREECE Alexis Kermanidis, Prof, GREECE Vasileios Mitrousias, MD, PhD, GREECE Michael E. Hantes, MD, PhD, Prof., GREECE ARISTIDIS ZIBIS
A Goal-Based Return To Sport Following Knee Arthroplasty: A Prospective Study Using Functional Criteria And Gait Analysis Abstract Presentation 5 minutes Ahmed A Magan, BM BSc (Hons) MRCS (Eng) FRCS (Eng) Trauma & Orth, UNITED KINGDOM Babar Kayani, BSc (HONS), MBBS, MRCS (Eng), UNITED KINGDOM Ricci Plastow, FRCS, UNITED KINGDOM Justin Chang, MBBS, MRCS, FRCSC, UNITED KINGDOM Fares S. Haddad, MCh(Orth), BSc, FRCS(Orth), UNITED KINGDOM
Onlay Patellofemoral Arthroplasty In Patients With Isolated Patellofemoral Arthritis: A Systematic Review ePoster Presentation Jordan C Villa, MD, UNITED STATES Albit Paoli, MD, UNITED STATES Howard Nelson-Williams, MD, MPH, UNITED STATES Rhamee Badr, MD, UNITED STATES Katharine Harper, MD, UNITED STATES
Bi-cruciate retaining versus posterior stabilized total knee arthroplasty at two years follow up in a prospective controlled trial ePoster Presentation Theofylaktos Kyriakidis, MD, MSc, PhD, GREECE Jacques Hernigou, MD, BELGIUM Rene E. Verdonk, Prof Em, MD, PhD, BELGIUM
Biomechanical Analysis Of Tissue Engineering Construct For Articular Cartilage Restoration - A Pre-Clinical Study ePoster Presentation Rafaella Rogatto De Faria, PhD, BRAZIL Joao Paulo Cortez Santanna, MD, MSc, BRAZIL Marina J. S. Maizato, PhD, BRAZIL Carla Pinheiro, MSc, BRAZIL Hugo Moreira, MD, BRAZIL Roberto Bortolussi, PhD, BRAZIL Cyro Albuquerque, Prof., PhD, BRAZIL Idagene A. Cestari, PhD, BRAZIL Arnaldo J. Hernandez, MD, PhD, BRAZIL Tiago Lazzaretti Fernandes, MD, PhD, MSc, Post-Doctorate, BRAZIL
The Top 100 Most Impactful Articles On The Rotator Cuff: An Altmetric Analysis Of Online Media ePoster Presentation Brett Haislup, MD, UNITED STATES Matthew Civilette, MD, UNITED STATES William Rate, MS, MD, UNITED STATES Andrew Cohen, , UNITED STATES Blake M. Bodendorfer, MD, UNITED STATES Heath Patrick Gould, MD, UNITED STATES
Patient's Age Should Not Affect Selection for Fixed-Bearing Partial Knee Arthroplasty: Excellent Outcomes and Satisfaction Demonstrated for All Age Groups ePoster Presentation Damian Bull, FRCS (Tr & Orth), UNITED KINGDOM Ashim Mannan, FRCS (Tr & Orth), UNITED KINGDOM Juned Ansari, FRCS (Tr & Orth), UNITED KINGDOM Caroline Bennett, RN, UNITED KINGDOM Tahir Idrees, PGDip Public Health, UNITED KINGDOM Katy Mason, MSc, PgDip, UNITED KINGDOM Emily London, MB ChB MRes, UNITED KINGDOM David Duffy, MBBS, MRCS, FRCS, UNITED KINGDOM Nick London, MA, MD, FRCS (Tr & Orth), UNITED KINGDOM
The Minimal Clinically Important Differences For Patient-Reported Outcomes Differ Between Centrally Sensitized And Non-Sensitized Patients Following Total Knee Arthroplasty ePoster Presentation Man-Soo Kim, MD, PhD, KOREA, REPUBLIC OF Yong Gyu Sung, MD, KOREA, REPUBLIC OF Dong-Chul Park, MD, KOREA, REPUBLIC OF Jae Jung Kim, MD, KOREA, REPUBLIC OF Yong In, MD, PhD, KOREA, REPUBLIC OF
Impact of Number of Inside-Out Sutures on Meniscal Repair Failure ePoster Presentation Robert A Magnussen, MD, MPH, UNITED STATES Matt Dorweiler, MD, UNITED STATES James Oosten, BS, UNITED STATES Alex C. Dibartola, MD, MPH, UNITED STATES Moneer Abouljoud, BS, UNITED STATES James C. Kirven, BS, UNITED STATES Ryan Blackwell, MD, UNITED STATES Robert A. Duerr, MD, UNITED STATES David C. Flanigan, MD, UNITED STATES
Isolated Lateral Collateral Ligament Injuries Encountered in Combat Sports: What is the Optimal Treatment? ePoster Presentation Nicole Danielle Rynecki, MD, UNITED STATES Kunj Jain, BS, UNITED STATES Harsh Shah, MD, UNITED STATES Robin M. Gehrmann, MD, UNITED STATES
Anterior Cruciate Ligament Reconstruction With Internal Brace Augmentation Has Less Re-Rupture Compared With Acl Reconstruction Without Augmentation ePoster Presentation João V. Novaretti, MD, PhD, BRAZIL Lucas Santos Lima, MD, BRAZIL Diego Costa Astur, MD, PhD, BRAZIL Camila Cohen Kaleka, PhD, BRAZIL Pedro Debieux, MD, PhD, BRAZIL Joicemar T. Amaro, MD, BRAZIL Daniel Esperante, MD, BRAZIL Moises Cohen, MD, PhD, Prof., BRAZIL
Biconcave Medial Tibial Plateau Morphology and the Association with Medial Meniscal Tear Pathology Abstract Presentation 6 minutes John Ryan Taylor, MD, MPH, UNITED STATES Joshua Mizels, BA, UNITED STATES Trevor Shelton, MD, MS, UNITED STATES F. Alan Barber, MD, FACS, UNITED STATES Mark Getelman, MD, UNITED STATES
Surgical management of severe post-traumatic arthrofibrosis of the knee: clinical results in workers´compensation population ePoster Presentation Jose Ignacio Laso, Md, CHILE Nicolas Franulic, MD, CHILE Cristobal Del Pino, MD, CHILE Cristián Andres Brito Ayet, MD, CHILE Carlos Rojas, MD, CHILE Nicolas Gaggero, MD, CHILE
Typical Pain Patterns in Patients After Total Knee Arthroplasty Abstract Presentation 6 minutes Dominic Thierry Mathis, MD, SWITZERLAND Samuel Tschudi, Mr., SWITZERLAND Antonia Hauser, MD, SWITZERLAND Amsler Felix, Mr., SWITZERLAND Helmut Rasch, MD, SWITZERLAND Michael T. Hirschmann, MD, Prof., SWITZERLAND
Association Between Meniscal Allograft Tears and Early Surgical Meniscal Allograft Failure Award Winner Philipp Wilhelm Winkler, MD, Assoc. Prof., AUSTRIA Nyaluma N. Wagala, MD, UNITED STATES Jonathan D Hughes, MD, PhD, UNITED STATES James J. Irrgang, PT, PhD, FAPTA, UNITED STATES Freddie H. Fu, MD, UNITED STATES Volker Musahl, MD, Prof., UNITED STATES
Anterolateral Complex Injuries In ‘Isolated’ Anterior Cruciate Ligament Ruptures And Their Associations ePoster Presentation Lukas Willinger, MD, GERMANY Ganesh Balendra, MBBS, AUSTRALIA Adam Mitchell, MB BS, FRCS, FRCR, UNITED KINGDOM Justin Lee, MB BS, FRCR, UNITED KINGDOM Vishal Pai, MBChB, FRACS, FAOrthA, AUSTRALIA Mary Jones, MSc, Grad. Dip. Phys., UNITED KINGDOM Andy Williams, MBBS, FRCS(Orth), FFSEM(UK), UNITED KINGDOM
Ramp lesions are six times more likely to be observed in the presence of a posteromedial tibial bone bruise in ACL-injured patients ePoster Presentation Wouter Beel, MD, CANADA Caroline Mouton, PhD, LUXEMBOURG Daniele Tradati, MD, ITALY Christian Nührenbörger, MD, LUXEMBOURG Romain Seil, MD, Prof., LUXEMBOURG
Participation in Sporting Activities Following Knee Replacement: Total Versus Unicompartmental – A 10-Year Follow-Up Study ePoster Presentation Christopher Allan, MBChB, MRCS, UNITED KINGDOM Graeme P. Hopper, MBChB, MSc, MRCSEd, MFSTEd, MD, FRCSGlas (Tr&Orth), UNITED KINGDOM Matthew Gillespie, MBChB, MRCS, UNITED KINGDOM Greg McKean, MBChB, MRCS, UNITED KINGDOM Brian Patrick Rooney, MBChB, FRCS, FRCS(Tr & Orth), UNITED KINGDOM William Leach, FRCS Orth, UNITED KINGDOM
Osteoarthritis-Biomarkers Behavior in Patients with ACL-Reconstruction, at 2 Years Follow Up. ePoster Presentation Jaime Palos, MD, MSc, MEXICO Carlos Landa Solis, PhD, MEXICO Anell Olivos-Meza, PhD, MEXICO
Correlation Of Tibial And Femoral Tunnel Size With Pet Mri After Acl Reconstruction. ePoster Presentation David C. Flanigan, MD, UNITED STATES Elizabeth Barmash, BS, UNITED STATES Robert A Magnussen, MD, MPH, UNITED STATES Christopher C. Kaeding, MD, UNITED STATES Katherine Binzel, PhD, UNITED STATES Alex C. Dibartola, MD, MPH, UNITED STATES Michael V Knopp, MD, PhD, UNITED STATES
Prospective Randomised Controlled Trial Of Three Tibial Component Fixation Techniques: Medium To Long Term Functional And Radiological Outcomes ePoster Presentation Myles R. J. Coolican, FRACS, AUSTRALIA Darshan Srishail Angadi, MBBS, MRCS, PGCert, FRCS (Tr &Orth), MD(Research) , INDIA Vikram K. Kandhari, MS, DNB, UNITED KINGDOM
Grade III Pivot Shift as an Early Sign of Knee Decompensation in Chronic ACL-Injured Knees with Bimeniscal Tears ePoster Presentation Amanda Magosch, Cand. med., LUXEMBOURG Christophe Jacquet , MD, LUXEMBOURG Christian Nührenbörger, MD, LUXEMBOURG Caroline Mouton, PhD, LUXEMBOURG Romain Seil, MD, Prof., LUXEMBOURG
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The Partial Femoral Condyle Focal Resurfacing (Hemicap-Unicap) For Treatment Of Full-Thickness Cartilage Defects, Systematic Review And Meta-Analysis ePoster Presentation Hany Elbardesy, MSc, MD, FRCS(Orth), FEBOT, SICOT Diploma, UNITED KINGDOM James Harty, Prof, IRELAND Lydia Simmon, MRCS, IRELAND Matthew Nagle, FRCS, IRELAND
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Low Return To Pre-Injury Level Of Sports After Multi-Ligament Knee Injury ePoster Presentation Donna Blokland, MD, NETHERLANDS Bas Van Ooij, MD, NETHERLANDS Mikel L. Reilingh, MD, NETHERLANDS Nienke Wolterbeek, NETHERLANDS Jacco A. C. Zijl, MD, NETHERLANDS
Evaluation Of Cartilage Repair After Open-Wedge High Tibial Osteotomy Using T2 Mapping Methods ePoster Presentation Ken Iida, MD, JAPAN Yusuke Hashimoto, MD, PhD, JAPAN Yohei Nishida, MD, JAPAN Shinya Yamasaki, MD, PhD, JAPAN Hiroaki Nakamura, MD, PhD, JAPAN
Dair Treatment In Early Infection Of Unicompartmental Knee Arthtroplasty: What Do We Know? Abstract Presentation 6 minutes Angela Brivio, MD, FRCS, ITALY Jürgen Martin, MD, GERMANY Nicolò Castelnuovo , MD, ITALY David S. Barrett, MD, B.Sc.,FRCS, UNITED KINGDOM
Imaging Evaluation Of Articular Cartilage Repair By Tissue Engineering: Pre-Clinical Study ePoster Presentation Joao Paulo Cortez Santanna, MD, MSc, BRAZIL Carla Pinheiro, MSc, BRAZIL Rafaella Rogatto De Faria, PhD, BRAZIL Isabella Zaia, MD, BRAZIL Hugo Moreira, MD, BRAZIL Arnaldo J. Hernandez, MD, PhD, BRAZIL Tiago Lazzaretti Fernandes, MD, PhD, MSc, Post-Doctorate, BRAZIL
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Variations In Branching Of Popliteal Artery And Its Clinical Interest Abstract Presentation 9 minutes Paloma Aragonés, MD, PhD, Prof., SPAIN Miguel Angel Hernan-Prado, MD, SPAIN Sara Quinones, MD, SPAIN Yolanda Guindal Pérez, PhD, SPAIN Ana María Valverde Villar, MD, SPAIN Irene Espina Flores , MD, SPAIN Jose R Sanudo, MD, PhD, Prof, SPAIN
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Reliability Of Preoperative Planning Method Considering Latent Medial Joint Laxity In Medial Open-Wedge High Tibial Osteotomy ePoster Presentation Dong Jin Ryu, MD, PhD., KOREA, REPUBLIC OF Kyeuback Kwon, MD, KOREA, REPUBLIC OF Myung Ku Kim, MD, KOREA, REPUBLIC OF Youngsik Jeon, MD, KOREA, REPUBLIC OF Byoungyoul Kang, KOREA, REPUBLIC OF Joon Ho Wang, MD, PhD, KOREA, REPUBLIC OF
3D Evaluation Of The Femoral Coronal Alignment Considering Navigation-Aided Surgery Of Total Knee Arthroplasty ePoster Presentation Atsushi Sato, MD, PhD, JAPAN Hiroshi Takagi, MD, PhD, JAPAN Takayuki Koya, MD, PhD, JAPAN Fumiyoshi Kawashima, MD, JAPAN Shin Kato, MD, PhD, JAPAN Jun Oike, MD, PhD, JAPAN Nozomu Inoue, MD, PhD, UNITED STATES Koji Kanzaki, Prof., JAPAN
Wearable System Embedding Flexible Textile-Based Strain Sensor For Monitoring Knee Joint ePoster Presentation Umile Giuseppe Longo, MD, MSc, PhD, Prof., ITALY Arianna Carnevale, PhD, ITALY Carlo Massaroni , Eng, ITALY Emiliano Schena, Eng, ITALY Joshua Di Tocco, Eng, ITALY Vincenzo Candela, MD, PhD, ITALY Alessandra Berton, MD, ITALY Giuseppe Salvatore, MD, PhD, ITALY Vincenzo Denaro, MD, PhD, Prof., ITALY
Resident Involvement and Patient Outcomes in Orthopaedic Surgery: A Meta-Analysis and Systematic Review ePoster Presentation Avi S. Robinson, MD, UNITED STATES Anne Strong, BA, UNITED STATES Hytham S. Salem, MD, UNITED STATES Carolyn Ardizzone, MS, UNITED STATES Stephen G Thon, MD, UNITED STATES Rachel M. Frank, MD, UNITED STATES
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Efficacy of an accelerated rehabilitation protocol after Tibial Tubercle Osteotomy for the surgical treatment of Recurrent Patella Instability ePoster Presentation Ryan M Bell, BS, UNITED STATES Danielle Kriscenski , BS, UNITED STATES Courtney Morgan, BS, UNITED STATES Cory M. Edgar, MD, PhD, UNITED STATES
The "Bankart Knee": Biomechanical Consequences of a Posterolateral Tibia Plateau Impression Fracture as Concomitant Injury of ACL Rupture Award Winner 6 minutes Danko Dan Milinkovic, MD, GERMANY Christoph Kittl, MD, MD(res), GERMANY Elmar Herbst, MD, PhD, GERMANY Christian Fink, MD, Prof., AUSTRIA Robert Smigielski, MD, PhD, POLAND Friedrich Greis, MD, GERMANY Michael J. Raschke, MD, Prof., GERMANY Mirco Herbort, MD, Prof., GERMANY
Ultrasound-guided Injections and Arthroscopic Surgery as Treatment of Medial Plica Syndrome of the Knee ePoster Presentation Joyce van Heeswijk, MSc, NETHERLANDS Burt Klos, MD, PhD, NETHERLANDS Petra Heesterbeek, MSc, PhD, NETHERLANDS Stephan Konijnenberg, MD, PhD, NETHERLANDS
Intravenous administration of two dose tranexamic acid ( TXA) and local anesthesia (LA) at graft site , improves outcome in single bundle Anatomical Anterior Cruciate Ligament reconstruction in uniformed military personnel. ePoster Presentation Mujeeb Ashraf, FRCS, MCh,FEBTS, SAUDI ARABIA Abaad saad Al-Thagafi, MBBS, SAUDI ARABIA Hatim Mohammed Alshareef, MD, SAUDI ARABIA Hatem Al-Harbi, FRCSC, SAUDI ARABIA
Contact Characteristics Analysis Of All-Inside Suture Technique In Displaced Medial Meniscus Tears Of Porcine Knee ePoster Presentation Artit Boonrod, MD, THAILAND Supanut Weraarchakul, MD, THAILAND Nadhaporn Saengpetch, MD, THAILAND Punyawat Apiwatanakul, MD, THAILAND Sermsak Sumanont, MD, THAILAND
Greater Postoperative Valgus Loose Gap At 90° Of Flexion Improves Patient Reported Outcome Measurement In Anatomical Bi-Cruciate Retaining Total Knee Arthroplasty Abstract Presentation 6 minutes Takao Kaneko, MD,PhD, JAPAN Yuta Mochizuki, MD, JAPAN Masaru Hada, MD, JAPAN Shinya Toyoda, MD, JAPAN Kazutaka Takada, MD, JAPAN Hiroyasu Ikegami, MD, PhD, Prof., JAPAN
Avoiding Stem Extension During Revision Total Knee Arthroplasty Abstract Presentation 5 minutes Jean-Yves Jenny, Prof., FRANCE
Injuries Related to Wakeboarding in Brazil: A Cross-Sectional Study ePoster Presentation Larissa Decezaro, BS, BRAZIL Ewerton Alexandre Galdeano, Ms, BRAZIL Fernando Bento Cunha, MD, BRAZIL Marcelo Paulini Costa, MD, BRAZIL Paulo Henrique Casagrande, MD, BRAZIL Itamar Aparecido Costa, MD, BRAZIL Marcelo De Azevedo E Souza Munhoz, PhD, BRAZIL
The Results Of 16S Dna Deep Sequencing In Culture-Negative Periprosthetic Joint Infections With Draining Sinus Tract Abstract Presentation 5 minutes Nicole Kennard, BS, MAT, UNITED STATES Arianna Mixon, BS, UNITED STATES Aniruth Srinivasaraghavan, BS, UNITED STATES Daniel Mohammadi, BS, UNITED STATES Gerhard E. Maale, MD, Prof., UNITED STATES
Utilizing a contralateral hamstring autograft facilitates earlier isokinetic and isometric strength recovery after anterior cruciate ligament reconstruction ePoster Presentation Christoffer von Essen, MD, PhD, SWEDEN Björn Barenius, MD, PhD, ass. Prof., SWEDEN Karl Eriksson, MD, PhD, Prof., SWEDEN
Midterm Results Of Anterior Cruciate Ligament Repair With Suture Tape Augmentation ePoster Presentation Graeme P. Hopper, MBChB, MSc, MRCSEd, MFSTEd, MD, FRCSGlas (Tr&Orth), UNITED KINGDOM Joanna Aithie, MBChB, UNITED KINGDOM Joanne Jenkins, MBChB, UNITED KINGDOM William Thomas Wilson, MBChB BSc(MedSci) FRCS (Tr&Orth) MFSEM(UK), UNITED KINGDOM Gordon M Mackay, MB ChB, BSc, FRCS, MD, UNITED KINGDOM
Do The Acl Reconstruction Outcomes With Hamstring Autografts Depend On The Percentage Of Native ACL Tibial Footprint Area Restored ? ePoster Presentation Rohan Bhargava, MS(Ortho) , DNB(Ortho) , FNB, MRCS ( Ed.), INDIA Parag Sancheti, FRCS (Ed),MS(ORTH), DNB(ORTH), MCh(UK),Ph.D(UK), INDIA Ashok Kumar Shyam, M. Orthopaedics, INDIA
Correlation Between The Degree Of Osteoarthritis And The Clinical Outcome Of Mid-Term To Long-Term Follow-Up In High Tibial Osteotomy ePoster Presentation Umit Kuwa, MD, PhD, JAPAN Masafumi Itoh, MD, PhD, JAPAN Junya Itou, MD, PhD, JAPAN Ken Okazaki, MD, PhD, JAPAN
Kinesiophobia is not related to knee function, muscle strength and self reported outcome measures after anterior cruciate ligament reconstruction. ePoster Presentation Mihkel Luik, MSc, ESTONIA Helena Saar, MSc, ESTONIA Lisette Villers, BSc, ESTONIA Tauno Koovit, MSc, ESTONIA Rein Kuik, MD, ESTONIA Madis Rahu, MD PhD, ESTONIA Jüri T. Kartus, MD, PhD, SWEDEN Leho Rips, MD, ESTONIA
Treatment Of Patellofemoral Chondral Lesions Through Micro-Fractures With Chitosan Scaffold: Clinical And Radiological Results ePoster Presentation

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Revisiting The Rationale For Patella Resurfacing In Total Knee Replacements.

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