Medial patellofemoral ligament MRI abnormalities in the setting of MCL injuries: are they clinically relevant?

2021 ◽  
Author(s):  
Mark S. Collins ◽  
Christin A. Tiegs-Heiden ◽  
Matthew A. Frick ◽  
Michael D. Brandt
Keyword(s):  
Medial Patellofemoral Ligament

Effect of Isolated Medial Patellofemoral Ligament Reconstruction in Patellofemoral Instability Regardless of Predisposing Factors

2020 ◽  
Author(s):  
Jae Ik Lee ◽  
Mohd Shahrul Azuan Jaffar ◽  
Han Gyeol Choi ◽  
Tae Woo Kim ◽  
Yong Seuk Lee
Keyword(s):  
Medial Patellofemoral Ligament ◽  
Trochlear Dysplasia ◽  
Case Series ◽  
Patellofemoral Instability ◽  
International Knee Documentation Committee ◽  
Predisposing Factors ◽  
Mpfl Reconstruction ◽  
Patellar Tilt ◽  
Case Series Study

AbstractThe purpose of this study was to evaluate the outcomes of isolated medial patellofemoral ligament (MPFL) reconstruction, regardless of the presence of predisposing factors. A total of 21 knees that underwent isolated MPFL reconstruction from March 2014 to August 2017 were included in this retrospective series. Radiographs of the series of the knee at flexion angles of 20, 40, and 60 degrees were acquired. The patellar position was evaluated using the patellar tilt angle, sulcus angle, congruence angle (CA), and Caton-Deschamps and Blackburne-Peel ratios. To evaluate the clinical outcome, the preoperative and postoperative International Knee Documentation Committee (IKDC) and Lysholm knee scoring scales were analyzed. To evaluate the postoperative outcomes based on the predisposing factors, the results were separately analyzed for each group. Regarding radiologic outcomes, 20-degree CA was significantly reduced from 10.37 ± 5.96° preoperatively to −0.94 ± 4.11° postoperatively (p = 0.001). In addition, regardless of the predisposing factors, delta values of pre- and postoperation of 20-degree CA were not significantly different in both groups. The IKDC score improved from 53.71 (range: 18–74) preoperatively to 94.71 (range: 86–100) at the last follow-up (p = 0.004), and the Lysholm score improved from 54.28 (range: 10–81) preoperatively to 94.14 (range: 86–100) at the last follow-up (p = 0.010). Isolated MPFL reconstruction provides a safe and effective treatment for patellofemoral instability, even in the presence of mild predisposing factors, such as trochlear dysplasia, increased patella height, increased TT–TG distance, or valgus alignment. This is a Level 4, case series study.

Safe Drilling Paths in the Distal Femoral Epiphysis for Pediatric Medial Patellofemoral Ligament Reconstruction

PEDIATRICS ◽  
2016 ◽  
Vol 137 (Supplement 3) ◽  
pp. 559A-559A
Author(s):  
Cynthia Nguyen ◽  
Lutul Farrow ◽  
Allison Gilmore ◽  
Raymond W. Liu
Keyword(s):  
Ligament Reconstruction ◽  
Medial Patellofemoral Ligament ◽  
Medial Patellofemoral Ligament Reconstruction ◽  
Distal Femoral Epiphysis

Medial patellofemoral ligament reconstruction

2017 ◽  
Vol 70 (3-4) ◽  
pp. 80-86
Author(s):  
Vladimir Ristic ◽  
Mirsad Maljanovic ◽  
Vukadin Milankov
Keyword(s):  
Ligament Reconstruction ◽  
Medial Patellofemoral Ligament ◽  
Medial Patellofemoral Ligament Reconstruction

scholarly journals Short-term Results of Medial Patellofemoral Ligament Reconstruction for Patellar Dislocation

2009 ◽  
Vol 58 (2) ◽  
pp. 266-270
Author(s):  
Koji Sakuraba ◽  
Hiromasa Miura ◽  
Shuichi Matsuda ◽  
Ken Okazaki ◽  
Shinji Fukuoka ◽  
...  
Keyword(s):  
Patellar Dislocation ◽  
Ligament Reconstruction ◽  
Medial Patellofemoral Ligament ◽  
Medial Patellofemoral Ligament Reconstruction ◽  
Short Term

scholarly journals Anatomical femoral tunnel positioning in the medial patellofemoral ligament reconstruction: is the free-hand technique accurate?

2020 ◽  
Vol 8 (15) ◽  
pp. 924-924
Author(s):  
Guilherme Moreira de Abreu-e-Silva ◽  
Felipe Antônio Ruy Buarque ◽  
Thiago Scherr Dias ◽  
Pengfei Lei ◽  
Elton Luis Ribeiro Bueno ◽  
...  
Keyword(s):  
Ligament Reconstruction ◽  
Medial Patellofemoral Ligament ◽  
Femoral Tunnel ◽  
Medial Patellofemoral Ligament Reconstruction ◽  
Free Hand Technique ◽  
Tunnel Positioning

scholarly journals Interference Screw Versus Suture Anchors for Femoral Fixation in Medial Patellofemoral Ligament Reconstruction: A Biomechanical Study

2021 ◽  
Vol 9 (3) ◽  
pp. 232596712198928
Author(s):  
Heath P. Gould ◽  
Nicholas R. Delaney ◽  
Brent G. Parks ◽  
Roshan T. Melvani ◽  
Richard Y. Hinton
Keyword(s):  
Medial Patellofemoral Ligament ◽  
Interference Screw ◽  
Biomechanical Study ◽  
Graft Fixation ◽  
Mpfl Reconstruction ◽  
Suture Anchors ◽  
Femoral Fixation ◽  
Significant Difference ◽  
Load To Failure ◽  
The Mean

Background: Femoral-sided graft fixation in medial patellofemoral ligament (MPFL) reconstruction is commonly performed using an interference screw (IS). However, the IS method is associated with several clinical disadvantages that may be ameliorated by the use of suture anchors (SAs) for femoral fixation. Purpose: To compare the load to failure and stiffness of SAs versus an IS for the femoral fixation of a semitendinosus autograft in MPFL reconstruction. Study Design: Controlled laboratory study. Methods: Based on a priori power analysis, a total of 6 matched pairs of cadaveric knees were included. Specimens in each pair were randomly assigned to receive either SA or IS fixation. After an appropriate reconstruction procedure, the looped end of the MPFL graft was pulled laterally at a rate of 6 mm/s until construct failure. The best-fit slope of the load-displacement curve was then used to calculate the stiffness (N/mm) in a post hoc fashion. A paired t test was used to compare the mean load to failure and the mean stiffness between groups. Results: No significant difference in load to failure was observed between the IS and the SA fixation groups (294.0 ± 61.1 vs 250.0 ± 55.9; P = .352), although the mean stiffness was significantly higher in IS specimens (34.5 ± 9.6 vs 14.7 ± 1.2; P = .004). All IS reconstructions failed by graft pullout from the femoral tunnel, whereas 5 of the 6 SA reconstructions failed by anchor pullout. Conclusion: In this biomechanical study using a cadaveric model of MPFL reconstruction, SA femoral fixation was not significantly different from IS fixation in terms of load to failure. The mean load-to-failure values for both reconstruction techniques were greater than the literature-reported values for the native MPFL. Clinical Relevance: These results suggest that SAs are a biomechanically viable alternative for femoral-sided graft fixation in MPFL reconstruction.

scholarly journals Femoral Tunnel Fixation for Medial Patellofemoral Ligament Reconstruction in the Growing Patient

2021 ◽  
Vol 37 (1) ◽  
pp. e25
Author(s):  
Henry B. Ellis ◽  
Bruno Gross ◽  
Madison Brenner ◽  
Charles W. Wyatt ◽  
Philip L. Wilson
Keyword(s):  
Ligament Reconstruction ◽  
Medial Patellofemoral Ligament ◽  
Femoral Tunnel ◽  
Medial Patellofemoral Ligament Reconstruction
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