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posterior cruciate reconstruction

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https://www.readbyqxmd.com/read/28430526/the-bow-tie-shape-of-the-anterior-cruciate-ligament-as-visualized-by-high-resolution-magnetic-resonance-imaging
#1
Kang Min Sohn, Min Jin Lee, Helen Hong, Young Cheol Yoon, Chan Deok Park, Joon Ho Wang
BACKGROUND: Although numerous studies have examined the anatomic characteristics of the anterior cruciate ligament (ACL), its actual shape remains unclear. PURPOSE: To determine the average shape of the ACL by analyzing its cross section through the use of high-resolution magnetic resonance imaging (MRI) data. STUDY DESIGN: Descriptive laboratory study. METHODS: The study included 96 MRIs, conducted using a 3.0-T magnet, to analyze the shape of the ACL...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28409139/double-bundle-pcl-reconstruction-using-autologous-hamstring-tendons-outcome-with-a-minimum-2-year-follow-up
#2
Ricardo de Paula Leite Cury, Rômulo Neves Castro Filho, Daniel Akira Sadatsune, Davi Ribeiro do Prado, Ricardo José Peruzzo Gonçalves, Marcos Barbieri Mestriner
OBJECTIVE: To present the outcomes of posterior cruciate ligament (PCL) double-bundle reconstruction using autologous hamstring tendons, with a minimum follow-up of two years. METHODS: Evaluation of 16 cases of PCL injury that underwent double-bundle reconstruction with autogenous hamstring tendons, between 2011 and 2013. The final sample consisted of 16 patients, 15 men and one woman, with a mean age of 31 years (21-49). The predominant mechanism was motorcycle accident in half of the cases...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28409107/a-transosseous-bone-bridge-repair-for-posterior-horn-meniscal-root-tears-during-anterior-cruciate-ligament-reconstruction
#3
Jonathan M Frank, Daniel J Liechti, Jack Anavian, Thomas R Hackett
Meniscal root tears occur in isolation or concurrently with ligamentous knee injury and cause significantly altered knee mechanics with the loss of normal meniscus hoop stress. This loss of normal meniscus function can result in abnormal knee kinematics and, subsequently, more rapid degenerative changes of the knee articular surface. In the setting of anterior cruciate ligament tear, the posterolateral meniscus root is most commonly damaged. Several techniques exist for meniscus root repair; however, none have been shown to be clearly superior...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28409105/anatomic-single-bundle-anterior-cruciate-ligament-reconstruction-using-the-modified-transtibial-technique
#4
Dhong Won Lee, Jin Goo Kim
We present a technique for anterior cruciate ligament (ACL) reconstruction using hamstring tendon autograft with a modified transtibial technique. Our modified transtibial technique has the advantages of the conventional transtibial technique that is familiar to surgeons and that allows the press-fit fixing and enables us to make a relatively long femoral tunnel. To make the femoral tunnel at the anatomic position, the triangular, funnel-shaped bony trough was made to slip the eccentrically positioned guide pin into the anticipated anatomic center with a free-hand technique after marking the anatomic ACL footprint using a microfracture awl through the anteromedial portal...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28409103/posterior-cruciate-ligament-reconstruction-with-hamstring-tendons-using-a-suspensory-device-for-tibial-fixation-and-interference-screw-for-femoral-fixation
#5
Alejandro Espejo-Baena, Alejandro Espejo-Reina, María Josefa Espejo-Reina, Maximiano Lombardo-Torre
A technique for posterior cruciate ligament reconstruction is presented. Autologous hamstring tendons are selected as a graft. An interference screw is used for femoral fixation. A suspension device is used for tibial fixation to bring the fixation closer to the articular end of the tibial tunnel. Single diameter tunnels of the same diameter as the graft are created in an outside-in direction.
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28401277/stress-distribution-is-deviated-around-the-aperture-of-the-femoral-tunnel-in-the-anatomic-anterior-cruciate-ligament-reconstruction
#6
Yuichi Hoshino, Ryosuke Kuroda, Yuichiro Nishizawa, Naoki Nakano, Kanto Nagai, Daisuke Araki, Shinya Oka, Shogo Kawaguchi, Kouki Nagamune, Masahiro Kurosaka
PURPOSE: Final tunnel location in the anterior cruciate ligament (ACL) reconstruction is unpredictable due to tunnel widening and/or transposition. The mechanical stress around the tunnel aperture seems to be a major factor but is not fully investigated. The purpose of this study was to measure the stress from the ACL graft around the tunnel aperture when the ACL graft tension reaches its peak. METHODS: Six cadaveric knees were used. Single-bundle ACL reconstruction was performed using a hamstrings graft...
April 11, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28392051/evaluating-the-femoral-side-critical-corner-in-posterior-cruciate-ligament-reconstruction-the-effect-of-outside-in-versus-inside-out-creation-of-femoral-tunnels-on-graft-contact-pressure-in-a-synthetic-knee-model
#7
Steven J Narvy, George F Hatch, Hansel E Ihn, Nathanael D Heckmann, Michelle H McGarry, James E Tibone, Thay Q Lee
PURPOSE: To characterize and compare the graft contact characteristics of outside-in (OI) and inside-out (IO) femoral tunnels during single-bundle reconstruction of the anterolateral bundle of the posterior cruciate ligament in a synthetic knee model. METHODS: Femoral tunnels were separately made in 16 synthetic femora (8 OI and 8 IO). Achilles tendon allografts were fixed using suspensory fixation with a pressure sensor between the allograft and femoral tunnel...
April 6, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28373934/remnant-preserving-posterior-cruciate-ligament-reconstruction-arthroscopic-transseptal-rod-and-pulley-technique
#8
Bancha Chernchujit, Supawat Samart, Pongtep Na Nakorn
The preservation of posterior cruciate ligament (PCL) remnant augmentation was recently proposed as a technique for PCL reconstruction. The technique achieved isometry and anatomic position of the PCL graft, but it was technically difficult. The present technique is a modified transseptal technique with visualization from both posteromedial and posterolateral portals. Moreover, this rod-pulley technique could prevent the killer turn effectively. The result was anatomic remnant augmented PCL graft.
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28370840/effect-of-femoral-tunnel-positions-on-graft-stress-in-outside-in-acl-reconstruction-surgery-during-continuous-knee-motion-a-simulation-study
#9
Kyungmin Kang, Tae Soo Bae
BACKGROUND: Previous studies regarding the optimal femoral tunnel location for an anterior cruciate ligament (ACL) reconstruction were based on static experiments at specific angles, and did not consider continuous motion of the knee. METHODS: Twenty-four surgical sites were set and continuous kinematic data, obtained from motion analysis, was used to describe knee movement. The bending angle and stress of the ACL graft as well as the length of the femoral tunnel was calculated through multi-flexible body dynamics analysis...
March 31, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28366539/influence-of-the-different-anteromedial-portal-on-femoral-tunnel-orientation-during-anatomic-acl-reconstruction
#10
Dong-Kyu Moon, Ho-Seung Jo, Dong-Yeong Lee, Dong-Geun Kang, June-Ho Byun, Sun-Chul Hwang
OBJECTIVE: The purpose of this study was to evaluate the effect of femoral tunnel orientation, drilled through the accessory anteromedial (AAM) portal or the high AM portal in anatomic anterior cruciate ligament (ACL) reconstruction. METHODS: In 16 cadaver knees, using o'clock method, centers of the ACL femoral footprint were drilled with an 8-mm reamer via an AAM portal (eight knees) or a high AM portal (eight knees). Computed tomography (CT) scans were taken of each knee...
March 30, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28355671/multiligamentous-injury-of-the-knee-mri-diagnosis-and-injury-patterns
#11
Barry Glenn Hansford, Corrie M Yablon
Anterior cruciate and posterior cruciate injuries rarely occur in isolation and are often associated with injuries to the secondary or supporting structures that provide stability against rotational forces. These structures include the posterolateral and posteromedial corner ligaments and tendons, as well as the anterolateral ligament. If injuries to these secondary structures are not appreciated at the time of cruciate ligament reconstruction, an isolated cruciate ligament reconstruction may be predisposed to early failure...
April 2017: Seminars in Musculoskeletal Radiology
https://www.readbyqxmd.com/read/28343325/mri-can-accurately-detect-meniscal-ramp-lesions-of-the-knee
#12
Justin W Arner, Elmar Herbst, Jeremy M Burnham, Ashish Soni, Jan-Hendrik Naendrup, Adam Popchak, Freddie H Fu, Volker Musahl
PURPOSE: Posterior horn meniscal tears are commonly found in conjunction with anterior cruciate ligament (ACL) injury. Some believe tears in the posterior meniscocapsular zone, coined ramp lesions, are important to knee stability. The purpose of this study was to determine whether pre-operative MRI evaluation was able to accurately and reproducibly identify ramp lesions. METHODS: Three blinded reviewers assessed MRIs twice for the presence of ramp lesions in patients undergoing ACL reconstruction...
March 25, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28314889/reconstructing-the-anterolateral-ligament-does-not-decrease-rotational-knee-laxity-in-acl-reconstructed-knees
#13
Kasper Stentz-Olesen, Emil Toft Nielsen, Sepp de Raedt, Peter Bo Jørgensen, Ole Gade Sørensen, Bart Kaptein, Kjeld Søballe, Maiken Stilling
PURPOSE: Little is known about the anterolateral ligament's (ALL) influence on knee laxity. The purpose of this study was to investigate rotational knee laxity against a pure axial rotational stress using radiostereometric analysis (RSA) after cutting and reconstructing both the anterior cruciate ligament (ACL) and the ALL. METHODS: Eight human donor legs were positioned and stereoradiographically recorded at 0°, 30° and 60° of knee flexion using a motorised fixture, while an internally rotating force of 4 Nm was applied to the foot...
March 17, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28302426/proximity-of-lateral-critical-structures-to-the-all-epiphyseal-outside-in-femoral-tunnels-in-pediatric-anterior-cruciate-ligament-reconstruction
#14
Mark K Lane, Jennifer Mutch, Kaitlyn Ratkowiak, Stephen E Lemos, Kunal Kalra
PURPOSE: To describe the proximity of the lateral critical structures (peroneal nerve [PN], popliteus tendon [PT], lateral collateral ligament [LCL], and articular cartilage [AC]) to the femoral tunnel for outside-in all-epiphyseal anterior cruciate ligament (ACL) reconstruction in reference to knee flexion angle. METHODS: All-epiphyseal ACL reconstructions were performed in 12 human cadaveric knees using arthroscopy and outside-in drilling for anatomic femoral tunnel placement that was ensured by identifying the center of the total ACL footprint...
March 13, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28291184/lateral-radiographic-landmarks-for-acl-and-lcl-footprint-origins-during-all-epiphyseal-femoral-drilling-in-skeletally-immature-knees
#15
Kevin G Shea, Peter C Cannamela, Peter D Fabricant, E Bailey Terhune, John D Polousky, Matthew D Milewski, Theodore J Ganley, Allen F Anderson
BACKGROUND: This study was conducted to evaluate the spatial relationship of the anterior cruciate ligament (ACL) and lateral collateral ligament (LCL) femoral footprint origins in knee specimens from skeletally immature donors as viewed on lateral radiographs. METHODS: Fourteen cadaver specimens of skeletally immature knees from children between 7 and 11 years old at the time of death were examined through gross dissection. Metallic pins were placed at the center of the ACL and LCL femoral footprints, and computed tomography (CT) scans were performed...
March 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28282669/comparison-of-anterior-cruciate-ligament-graft-isometry-between-paired-femoral-and-tibial-tunnels
#16
E Lyle Cain, Marcus D Biggers, David P Beason, Benton A Emblom, Jeffrey R Dugas
Accurate tunnel placement is important for a successful anterior cruciate ligament (ACL) reconstruction. Controversy exists concerning the preferred method of femoral tunnel preparation, with proponents of both medial portal and transtibial drilling techniques. Current ACL literature suggests that placement of the femoral ACL attachment site posterior or "low" in the ACL footprint leads to more anatomically correct ACL mechanics and better rotational control. There is limited literature focusing on ACL graft displacement through knee range of motion based on specific paired placement of femoral and tibial tunnels...
March 10, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28280906/kinematics-of-acl-and-anterolateral-ligament-part%C3%A2-ii-anterolateral-and-anterior-cruciate-ligament-reconstruction
#17
T Bonanzinga, C Signorelli, A Grassi, N Lopomo, M Jain, M Mosca, F Iacono, M Marcacci, S Zaffagnini
PURPOSE: To quantify the influence of Single-Bundle with Lateral Plasty and Double-Bundle reconstruction on static and dynamic laxity in combined ACL- and ALL-deficient knees. METHODS: The study included 10 fresh-frozen human knees. The joints were analyzed in the following conditions: ACL + ALL resection, Single-Bundle with Lateral Plasty (SBLP) reconstruction, Double-Bundle (DB) reconstruction. Testing parameters were: anterior displacement at 30° and 90° of flexion (AP30, AP90) applying a manual maximum load; internal rotation at 30° and 90° of flexion (INT30, INT90) applying a 5 Nm torque and acceleration and internal rotation Pivot-Shift (PS) test...
March 9, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28280904/complete-posterolateral-meniscal-root-tear-is-associated-with-high-grade-pivot-shift-phenomenon-in-noncontact-anterior-cruciate-ligament-injuries
#18
Guan-Yang Song, Hui Zhang, Xin Liu, Jin Zhang, Zhe Xue, Yi Qian, Hua Feng
PURPOSE: The purpose of this study was to investigate whether the complete posterolateral meniscal root tear (PLMRT) would be associated with high-grade pivot-shift phenomenon in noncontact anterior cruciate ligament (ACL) injuries. METHODS: From 2013 to 2015, a total of 1095 consecutive patients were diagnosed as having noncontact ACL injuries and underwent primary ACL reconstructions. Among them, 140 patients were arthroscopically verified to have concomitant PLMRTs...
March 9, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28255611/in-vivo-knee-rotational-stability-2%C3%A2-years-after-double-bundle-and-anatomic-single-bundle-acl-reconstruction
#19
M Komzák, R Hart, M Feranec, P Šmíd, R Kocová
PURPOSE: The objective of this study was to evaluate knee rotational stability at least 2 years after anatomic single-bundle anterior cruciate ligament (ACL) reconstruction (SB) and double-bundle ACL reconstruction (DB) in comparison with the contralateral healthy knee joint. The Cincinnati, Lysholm and IKDC scores were analysed too. METHODS: There were 40 patients in both groups, the mean follow-up was 27 months. For all measurements, the navigation system OrthoPilot was used...
March 2, 2017: European Journal of Trauma and Emergency Surgery: Official Publication of the European Trauma Society
https://www.readbyqxmd.com/read/28249973/the-long-term-clinical-and-radiological-outcomes-in-patients-who-suffer-recurrent-injuries-to-the-anterior-cruciate-ligament-after-reconstruction
#20
I Ahmed, L Salmon, J Roe, L Pinczewski
AIMS: The aim of this study was to investigate the long-term clinical and radiological outcome of patients who suffer recurrent injuries to the anterior cruciate ligament (ACL) after reconstruction and require revision surgery. PATIENTS AND METHODS: From a consecutive series of 200 patients who underwent primary reconstruction following rupture of the ACL, we identified 36 who sustained a further rupture, 29 of whom underwent revision surgery. Patients were reviewed prospectively at one, two, seven, 15 and about 20 years after their original surgery...
March 2017: Bone & Joint Journal
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