Summary: Isolated MPFL reconstruction with medial third of the patellar tendon showed a low rate of patellofemoral OA in the medium and long-terms follow-up. The presence of high-grade trochlear dysplasia did correlate to patellofemoral OA development.

Objective

The purpose of this study was to analyze the presence of patellofemo-ral osteoarthritis (OA) in the medium and long-terms in patients underwent medial patellofemoral ligament (MPFL) reconstruction with medial third of the patellar tendon to treat recurrent patellar instability.

Methods

This case series included 69 patients (86 knees) who underwent medi-al MPFL reconstruction between 2004 and 2016, mean age 26.1 ± 8 years (15 to 45 years). Data were recorded at a mean follow-up of 72.2 ± 37.5 months (24 to 163 months). Parameters evaluated: age, sex, follow-up period, recurrence, pre-existing chondral lesion. Standardized X-rays images were used to evaluate trochlear dysplasia (Dejour's classification), patellar height, femoral tunnel positioning and patellofemoral OA (Iwano’s classification). Uni and multivariate analysis correlated the variables to patellofemoral OA.

Results

There was patellofemoral OA in only 16.3% of cases (grade 1: 11.6%; grade 2: 3.5%; grade 3: 1.2%, grade 4: none). Univariate analysis showed that only the follow-up period had an independent association with patellofemoral OA (p = 0.028) and multivariate analysis showed that only high-grade (B/C) of trochlear dysplasia had a significant correlation with the occurrence of patellofemoral OA (p = 0.004). There were no recurrences and there was no correlation between patellofemoral OA and the others variables.

Conclusion

Isolated MPFL reconstruction with medial strip of the patellar tendon showed a low rate of patellofemoral OA in the medium and long-term follow-up. The presence of high-grade trochlear dysplasia (B/C) did correlate to patellofemoral OA development.

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Increased TT-TG and Sulcus Angle are Associated with Patella Osteochondritis Dissecans ePoster Presentation Emilie Lijesen, BS, UNITED STATES Akshitha Adhiyaman, BS, UNITED STATES Olivia C. Tracey, BA, UNITED STATES Joshua T. Bram, MD, UNITED STATES Nnaoma M Oji, MD, UNITED STATES Danielle E. Chipman, BS, UNITED STATES Shae K Simpson, BS, UNITED STATES Douglas Mintz, MD, UNITED STATES Peter D. Fabricant, MD, MPH, UNITED STATES Daniel W. Green, MD, MS, UNITED STATES
Analyzing the Alignment Error in Tibial Tuberosity-Trochlear Groove Distance (TT-TG) in Clinical Scans Using 2D and 3D Methods ePoster Presentation Johannes M. Sieberer, MSc, AUSTRIA Nancy Park, BS, UNITED STATES Shelby T Desroches, MS, UNITED STATES Albert L. Rancu, BS, UNITED STATES Curtis McDonald, MASc, UNITED STATES Armita Razieh Manafzadeh, PhD, UNITED STATES Steven Tommasini, PhD, UNITED STATES Daniel Wiznia, MD John P. Fulkerson, MD, UNITED STATES
Pure Distalization Tibial Tubercle Osteotomy Does Not Result In Posteriorization Of The Tibial Tubercle ePoster Presentation Nathan Varady, MD, MBA, UNITED STATES Nicolas Pascual-Leone, MD, UNITED STATES Ava Neijna, BA, UNITED STATES Andreas H. Gomoll, MD, UNITED STATES Sabrina M. Strickland, MD, UNITED STATES

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OCCURRENCE OF PATELLOFEMORAL OSTEOARTHRITIS AT MEDIUM AND LONG-TERMS AFTER ISOLATED RECONSTRUCTION OF THE MEDIAL PATELLOFEMORAL LIGAMENT WITH MEDIAL THIRD OF THE PATELLAR TENDON

OCCURRENCE OF PATELLOFEMORAL OSTEOARTHRITIS AT MEDIUM AND LONG-TERMS AFTER ISOLATED RECONSTRUCTION OF THE MEDIAL PATELLOFEMORAL LIGAMENT WITH MEDIAL THIRD OF THE PATELLAR TENDON

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Knee Patellofemoral ePosters

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OCCURRENCE OF PATELLOFEMORAL OSTEOARTHRITIS AT MEDIUM AND LONG-TERMS AFTER ISOLATED RECONSTRUCTION OF THE MEDIAL PATELLOFEMORAL LIGAMENT WITH MEDIAL THIRD OF THE PATELLAR TENDON

OCCURRENCE OF PATELLOFEMORAL OSTEOARTHRITIS AT MEDIUM AND LONG-TERMS AFTER ISOLATED RECONSTRUCTION OF THE MEDIAL PATELLOFEMORAL LIGAMENT WITH MEDIAL THIRD OF THE PATELLAR TENDON

Objective

Methods

Results

Conclusion