scholarly journals How the fixation method stiffness and initial tension affect anterior load–displacement of the knee and tension in anterior cruciate ligament grafts: A study in cadaveric knees using a double-loop hamstrings graft

2004 ◽  
Vol 22 (3) ◽  
pp. 613-624 ◽  
Author(s):  
Paul Eagar ◽  
M. L. Hull ◽  
S. M. Howell
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Fixation Method ◽  
Double Loop ◽  
Initial Tension ◽  
Load Displacement ◽  
Anterior Cruciate

The Effect of Initial Graft Tension in Anterior Cruciate Ligament Reconstruction on the Mechanical Behaviors of the Femur-Graft-Tibia Complex during Cyclic Loading

2002 ◽  
Vol 30 (6) ◽  
pp. 800-805 ◽  
Author(s):  
Hironori Numazaki ◽  
Harukazu Tohyama ◽  
Hideaki Nakano ◽  
Shinichi Kikuchi ◽  
Kazunori Yasuda
Keyword(s):  
Anterior Cruciate Ligament ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Ligament Reconstruction ◽  
Flexor Tendon ◽  
Cruciate Ligament ◽  
Tendon Graft ◽  
Initial Tension ◽  
Graft Tension ◽  
Anterior Cruciate ◽  
Flexor Tendon Graft

Background Initial graft tension influences clinical results of anterior cruciate ligament reconstruction. Hypothesis Under repetitive loading conditions, the effect of initial graft tension on the biomechanical behavior of the femur-graft-tibia complex may depend on the graft and the fixation. Study Design Ex vivo biomechanical laboratory study. Methods After anterior cruciate ligament reconstruction, initial graft tension of 20, 80, or 140 N was applied to the complex for 2 minutes. Then, a cyclic force-relaxation test was performed for 5000 cycles so that the graft was stretched by 2 mm. Results In a patellar tendon graft with interference screws, the average peak load values at the 5000th cycle were 105, 157, and 205 N for the complexes with initial tension of 20, 80, and 140 N, respectively. In a flexor tendon graft with interference screws, the values were 27, 41, and 39 N. In a flexor tendon graft with Endobutton fixation, the values were 17, 40, and 77 N. Conclusions Considering the tension of the normal anterior cruciate ligament (16 to 87 N), an initial tension of 20 N appears to be high enough for a patellar tendon graft. For a flexor tendon graft with interference screws, an increase in initial tension above 80 N has no biomechanical advantages.

Reduction of Initial Tension in the In Situ Frozen Anterior Cruciate Ligament

2004 ◽  
Vol 419 ◽  
pp. 207-213 ◽  
Author(s):  
Susumu Mikami ◽  
Kazunori Yasuda ◽  
Ryosei Katsuragi ◽  
Yoshimitsu Aoki ◽  
Akio Minami ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Initial Tension ◽  
Anterior Cruciate

scholarly journals Clinical Outcome Comparing Poly-L-lactic acid (PLLA) Bioabsorbable Interference Screws and Cortical Button-Post Fixation in Arthroscopic Anterior Cruciate Ligament Reconstruction

2020 ◽  
Vol 71 (4) ◽  
pp. 384-389
Author(s):  
Claudiu Daniel Chitea ◽  
Alina Dia Trambitas Miron ◽  
Gheorghe Tomoaia ◽  
Cristian Trambitas
Keyword(s):  
Anterior Cruciate Ligament ◽  
Anterior Cruciate Ligament Reconstruction ◽  
Ligament Reconstruction ◽  
Cruciate Ligament ◽  
Graft Fixation ◽  
Fixation Method ◽  
Hamstring Tendons ◽  
Interference Screws ◽  
Cruciate Ligament Reconstruction ◽  
Anterior Cruciate

A good fixation for anterior cruciate ligament reconstruction with hamstring tendons graft is important to withstand the stress on the graft resulting from post-operative rehabilitation. The optimal hamstring tendons graft fixation method remains uncertain within the sports medicine literature. The most used fixation techniques include: suspensory fixation with cortical-buttons, transfemoral fixation with cross-pins, and tunnel aperture fixation with interference screws. Patient recruitment and baseline data collection of this study were done at our hospital between July 2011- March 2016. In this study we included the records of 80 patients with an ACL rupture who elected to undergo ACL reconstructive surgery with allograft tissue. In our study the patients were mixed in 2 groups: (A) patients with interference bone screw group used for anterior ligament reconstruction graft fixation in both the femur and tibia and (B) patients with the cortical flip button group underwent graft fixation with the button on the femoral side and an interference screw on the tibial side. Our clinical study shows no significant differences in the patients� outcomes after using these two fixation devices.

scholarly journals Comparison of Clinical Results of Anteromedial and Transtibial Femoral Tunnel Drilling in ACL Reconstruction

2020 ◽  
Author(s):  
Leena Metso ◽  
Kirsi-Maaria Nyrhinen ◽  
Ville Bister ◽  
Jerker Sandelin ◽  
Arsi Harilainen
Keyword(s):  
Anterior Cruciate Ligament ◽  
Femoral Tunnel ◽  
Cruciate Ligament ◽  
Long Term Results ◽  
Rotational Stability ◽  
Fixation Method ◽  
Tibial Fixation ◽  
Anterior Cruciate ◽  
Semitendinosus Graft ◽  
Femoral Tunnel Drilling

Abstract Background: This study compares long term results of femoral tunnel drilling between anteromedial (AM) and transtibial (TT) techniques in reconstruction of anterior cruciate ligament (ACL). Methods: 300 patients with ACL reconstructions were chosen to this study from previously collected data of ACL reconstructions.They were divided into two groups: 150 patients with AM and 150 with TT drilling. In the AM group the reconstructions were performed using semitendinosus graft with Tape Locking Screw (TLS™) technique (n=87) or Retrobutton™ femoral and BioScrew™ tibial fixation with a semitendinosus-gracilis graft (n=63). In the TT group the fixation method used was Rigidfix™ femoral and Intrafix tibial fixation with a semitendinosus-gracilis graft. The evaluation methods were clinical examination, knee scores (Lysholm, Tegner, IKDC) and instrumented laxity measurements (KT-2000™). Our aim was to evaluate if there is a better rotational stability and therefore better clinical resultswhen using AM drilling compared to TT drilling. Results: Revision procedures were excluded from the study. There were 132 patients in the AM group and 133 in the TT group for evaluation. In the two year follow-up there were 60 patients in the AM group (45,5 %) and 58 in the TT group (43,6 %). There were no statistically significant differences found between the groups. Conclusion: Both drilling techniques resulted in improved patient performance and patient satisfaction. We found no data supporting the hypothesis that AM drilling technique provides better rotational stability to the knee. Trial registration: ISRCTN registry with study ID ISRCTN16407730. Keywords: Anterior cruciate ligament reconstruction; clinicaloutcome; anteromedial; transtibial

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