Summary: In cases of recurrent objective patellar instability, reconstruction of the MPFL by soft tissue fixation is a safe, effective and uncomplicated procedure with a low failure rate when associated with an osseous procedure.

Medial patellofemoral ligament (MPFL) reconstruction is known to be part of the treatment of patellar instability. The aim of this study was to evaluate clinical and functional results of MPFL reconstruction using a soft tissue fixation technique associated with a tibial tubercle osteotomy (TTO) in the adult population.
A retrospective analysis including patients with MPFL reconstruction with soft tissue fixation and TTO, with a 3 years minimum follow-up, was conducted. No trochleoplasty was performed. All preoperative and peroperative clinical and radiological data were collected. Kujala, Lysholm, IKDC, FJS scores, return to play and complications were evaluated at last follow-up. Failure was defined by a recurrence of patellar dislocation or a residual instability.
90 reconstructions were analyzed with a mean follow-up of 8.8 years. Mean age at surgery was 24.8 years and 64% of patient were females. Smilie test was positive in 96.7% patients and 65.6% of patients had a preoperative positive J-sign. 75.6% of patients had trochlear dysplasia (A, 51.5%; B, 32.3%; C, 10.3%; D, 5,9%) and 11.% had a patellar dysplasia. The mean preoperative Caton-Deschamps Index (CDI) was 1.26 (76.7% of patella alta) and the mean tibial tubercle-trochlear groove distance (TT-GT) was 16 mm. At last follow-up, Smilie test was positive in 3.3% patients, and no positive J-sign was found. The mean CDI was 0.99. Mean Kujala, Lysholm, IKDC and FJS scores were respectively 95, 94, 92 and 96. A number of 93.3% declared to be satisfied. 13 postoperative complications were found, including 4 infections, 3 tibial fractures, 1 tibial tubercle nonunion and a knee stiffness with no long-term functional consequence. 4 failures (failure rate of 4.4%) (2 recurrences and 2 residual instabilities) were observed. No specific complication of the MPFL reconstruction were found. The 3-years survival rate was 98.9% and the 10-year survival rate was 98.1%. Mean postoperative Tegner score (4.4) was comparable with preoperative Tegner score (4.4). 91.9% of patients practicing sports had return to play at a mean of 6.2 months.
In the case of recurrent patellar instability, MPFL reconstruction with a soft-tissue fixation is a safe and effective procedure with no specific complication and a low failure rate when associated with a concomitant TTO.

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Clinical And Radiographic Results After Isolated Mpfl Reconstruction For Patella Instability ePoster Presentation Theodoros Mylonas, MD, MSc, GREECE Alexandros Koskiniotis, MD, MSc, GREECE Efstathios Konstantinou, MD, MSc, UNITED STATES Georgios Komnos, MD, PhD, GREECE Vasileios Raoulis, MD, PhD, GREECE Michael E. Hantes, MD, PhD, Prof., GREECE
How Much Improvement in Patient-Reported Outcome Measures After Isolated Medial Patellofemoral Ligament Reconstruction is Associated with Surgeon-Defined Satisfactory Outcomes? A Jupiter Study ePoster Presentation Shital N. Parikh, MD, UNITED STATES Saral Patel, MD, UNITED STATES Matthew William Veerkamp, BA, UNITED STATES Eric J. Wall, MD, UNITED STATES Daniel W. Green, MD, MS, UNITED STATES Philip Wilson, MD, UNITED STATES Ben E. Heyworth, MD, UNITED STATES Henry B. Ellis, MD, UNITED STATES Marc Tompkins, MD, UNITED STATES Jacqueline M. Brady, MD, UNITED STATES The JUPITER Group, UNITED STATES Beth Ellen Shubin Stein, MD, UNITED STATES
3D-Pass (3D Patellar Instability Anatomical Severity Score): A Novel Metric Using Machine Learning To Predict Treatment Outcome In Patella Instability ePoster Presentation Marissa Lee Sinopoli, PhD, UNITED STATES Anthony Gatti, PhD, UNITED STATES Christian E Wright, BS, UNITED STATES Anna Bartsch, MD, SWITZERLAND Matthew William Veerkamp, BA, UNITED STATES Akshay Chaudhari, PhD, UNITED STATES Beth Ellen Shubin Stein, MD, UNITED STATES Shital N. Parikh, MD, UNITED STATES Kevin G. Shea, MD, UNITED STATES Scott Delp, PhD, UNITED STATES Seth L. Sherman, MD, UNITED STATES The JUPITER Group, UNITED STATES
Adductor Sling Versus Anatomical Technique In Medial Patellofemoral Ligament Reconstruction: A Retrospective Multicenter Study ePoster Presentation Rodrigo Guiloff, MD, Prof, CHILE Jose Tomas Arteaga, MD, Knee fellow, CHILE Jorge Simon Isla, MD, CHILE José Luis Prado, Md, CHILE Francisco Figueroa, MD, CHILE Alex Vaisman, MD, Prof., CHILE Rafael Calvo, MD, CHILE David H. Figueroa, MD, CHILE
An Oblique Transposition Quadricepsplasty Provides Excellent Outcomes For The Treatment Of Type Iv (Obligatory, Flexion-Range) Patellar Dislocation ePoster Presentation Philip Wilson, MD, UNITED STATES Clarissa Meza, MD, UNITED STATES Charles W. Wyatt, CPNP, UNITED STATES V. Claire Clark, BS, UNITED STATES Benjamin Johnson, PA-C, UNITED STATES Henry B. Ellis, MD, UNITED STATES
Outcomes Of Arthroscopic Patella Realignment In Children And Adolescents With A Minimum 2-Year Follow Up ePoster Presentation Serafina Faith Zotter, BS, UNITED STATES Georgia Butler, -, UNITED STATES Wei Shao Tung, BS, UNITED STATES Connor Thomas Wright, BA, UNITED STATES Kristen N. Reikersdorfer, BA, UNITED STATES Nikolaos K. Paschos, MD, PhD, UNITED STATES
How Should I Measure Proximal Femoral Version In Torsional Deformity? A New, Easy And Reproducible Measurement Method Using Maximum Intensity Projection (Mip) Imaging On Ct Scan. ePoster Presentation Federica Rosso, MD, ITALY Marco Bechis, ITALY Giorgio Governale, MD, ITALY Antonino Cantivalli, MD, ITALY Francesco Liberace, MD, ITALY Roberto Rossi, MD, ITALY Davide Bonasia, MD, ITALY
Tibial Tuberosity to Trochlear Groove Distance (TT-TG): A Breakdown into Two Principal Components ePoster Presentation Johannes M. Sieberer, MSc, AUSTRIA Nancy Park, BS, UNITED STATES Shelby T Desroches, MS, UNITED STATES Kelsey Brennan, UNITED STATES Albert L. Rancu, BS, UNITED STATES Armita Razieh Manafzadeh, PhD, UNITED STATES John Andrew Lynch, PhD, UNITED STATES Neil Segal, MD, MS, UNITED STATES Cora E. Lewis, MD, MSPH, UNITED STATES David T. Felson, MD, MPH, UNITED STATES Daniel Wiznia, MD John P. Fulkerson, MD, UNITED STATES
Patellar Tendon To Lateral Trochlear Ridge (PT-LTR) as an Indicator of Patellar Instability With Malalignment ePoster Presentation Brittany Margaret Ammerman, MD, MBS, UNITED STATES Ryann Davie, MD, UNITED STATES Natalie K. Pahapill, BS, UNITED STATES Bennett Propp, BS, UNITED STATES Simone Gruber, MS, UNITED STATES Joseph T. Nguyen, MPH, UNITED STATES Audrey Christine Wimberly, MPH, UNITED STATES Michelle E. Kew, MD, UNITED STATES Elizabeth Rose Dennis, MD MS, UNITED STATES Beth Ellen Shubin Stein, MD, UNITED STATES
Grading Severity in Trochlear Dysplasia: a Pilot Study ePoster Presentation Juan Pablo Martinez-Cano, MD, MSc, PhD, COLOMBIA
The Short-Term Clinical Results of Isolated Medial Patellofemoral Ligament Reconstruction in Patellar Dislocation: Comparing Superficial Quadriceps Tendon and Hamstring Tendon ePoster Presentation Yuki Suzuki, MD, PhD, JAPAN Yoshimitsu Aoki, MD, PhD, JAPAN Chiharu Inoue, MD, JAPAN Hisashi Matsumoto, PT, JAPAN Satoru Kaneko, MD, JAPAN Kazunori Yasuda, MD, PhD, Prof., JAPAN Tomonori Yagi, MD, PhD, JAPAN Masayuki Inoue, MD, PhD, JAPAN Takuma Katou, MD, JAPAN Eiji Kondo, MD, PhD, JAPAN Harukazu Tohyama, MD, PhD, JAPAN Norimasa Iwasaki, MD, PhD, JAPAN
Outcomes of Isolated Medial Patellofemoral Ligament Reconstruction after First-Time and Recurrent Patellar Instability: Recurrence, Return to Sport, And Osteochondral Injury: Data from the JUPITER Cohort ePoster Presentation Jacqueline M. Brady, MD, UNITED STATES Bennett Propp, BS, UNITED STATES Erick Marigi, MD, UNITED STATES Elizabeth Rose Dennis, MD MS, UNITED STATES Natalie K. Pahapill, BS, UNITED STATES Haley D. Smith, BS, UNITED STATES Audrey Christine Wimberly, MPH, UNITED STATES Joseph T. Nguyen, MPH, UNITED STATES Eric J. Wall, MD, UNITED STATES Daniel W. Green, MD, MS, UNITED STATES Beth Ellen Shubin Stein, MD, UNITED STATES Shital N. Parikh, MD, UNITED STATES
Significantly Greater Incidence Of Patella Fracture After Medial Patellofemoral Ligament Reconstruction For Patients Age 20 And Under ePoster Presentation Brendan Fitzgerald, BS, UNITED STATES Cale A. Jacobs, PhD, UNITED STATES Christian Lattermann, MD, UNITED STATES Miho J. Tanaka, MD, PhD, UNITED STATES
Headless Screw Fixation Lowers Re-Operation Rate Following Tibial Tubercle Osteotomy ePoster Presentation Ran Atzmon, MD, ISRAEL Aimee Steen, MS2, UNITED STATES Kinsley J Pierre, BS (Student), UNITED STATES Monica S. Vel, BS, UNITED STATES Nicole Segovia Pham, MPH, UNITED STATES Kenneth Lin, MD, UNITED STATES Seth L. Sherman, MD, UNITED STATES

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Results Of Mpfl Reconstruction Using Soft Tissue Fixation Technique Associated With A Procedure On The Att For Patellar Instability : An Average Follow-Up Of 8.8 Years

Results Of Mpfl Reconstruction Using Soft Tissue Fixation Technique Associated With A Procedure On The Att For Patellar Instability : An Average Follow-Up Of 8.8 Years

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Results Of Mpfl Reconstruction Using Soft Tissue Fixation Technique Associated With A Procedure On The Att For Patellar Instability : An Average Follow-Up Of 8.8 Years

Results Of Mpfl Reconstruction Using Soft Tissue Fixation Technique Associated With A Procedure On The Att For Patellar Instability : An Average Follow-Up Of 8.8 Years