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posterior cruciate reconstruction

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https://www.readbyqxmd.com/read/29456068/magnetic-resonance-imaging-diagnosis-of-medial-meniscal-ramp-lesions-in-patients-with-anterior-cruciate-ligament-injuries
#1
Kazuhisa Hatayama, Masanori Terauchi, Kenichi Saito, Jun Aoki, Satoshi Nonaka, Hiroshi Higuchi
PURPOSE: To prospectively evaluate the sensitivity and specificity of magnetic resonance imaging (MRI) for diagnosing ramp lesions, to compare them between 1.5- and 3-T MRI, and to evaluate whether bone contusion of the posterior lip of the medial tibial plateau was associated with ramp lesions. METHODS: For 155 knees that underwent primary ACL reconstruction, we prospectively examined for ramp lesions and medial meniscal body tears on MRI. MRI diagnosis of ramp lesions required high signal irregularity of the capsular margin or separation in the meniscocapsular junction of the medial meniscus posterior horn on sagittal images...
February 15, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29438746/longitudinal-changes-in-mr-t1%C3%AF-t2-signal-of-meniscus-and-its-association-with-cartilage-t1p-t2-in-acl-injured-patients
#2
Joseph Knox, Valentina Pedoia, Amy Wang, Matthew Tanaka, Gabby B Joseph, Jan Neumann, Thomas M Link, Xiaojuan Li, C Benjamin Ma
OBJECTIVE: To evaluate the longitudinal changes in meniscal T1ρ/T2 signal post-reconstruction in patients with acute anterior cruciate ligament (ACL) injury and to investigate the association with T1ρ/T2 signal in articular knee cartilage. METHOD: In this prospective study, knees of 37 patients with ACL-injury and reconstruction in addition to 13 healthy controls were scanned using magnetic resonance imaging (MRI) T1ρ/T2 mapping. Quantitative analysis of the meniscus was performed in the anterior/posterior horns of lateral/medial meniscus fourteen sub-compartments of cartilage spanning the medial/lateral area of the tibia and femoral condyles...
February 10, 2018: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/29430489/posterior-cruciate-ligament-current-concepts-review
#3
REVIEW
Santiago Pache, Zachary S Aman, Mitchell Kennedy, Gilberto Yoshinobu Nakama, Gilbert Moatshe, Connor Ziegler, Robert F LaPrade
The posterior cruciate ligament (PCL) is the largest and strongest ligament in the human knee, and the primary posterior stabilizer. Recent anatomy and biomechanical studies have provided an improved understanding of PCL function. PCL injuries are typically combined with other ligamentous, meniscal and chondral injuries. Stress radiography has become an important and validated objective measure in surgical decision making and post-operative assessment. Isolated grade I or II PCL injuries can usually be treated non-operatively...
January 2018: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/29425835/the-influence-of-internal-and-external-tibial-rotation-offsets-on-knee-joint-and-ligament-biomechanics-during-simulated-athletic-tasks
#4
Nathaniel A Bates, Rebecca J Nesbitt, Jason T Shearn, Gregory D Myer, Timothy E Hewett
BACKGROUND: Following anterior cruciate ligament injury and subsequent reconstruction transverse plane tibiofemoral rotation becomes underconstrained and overconstrained, respectively. Conflicting reports exist on how rotations influence loading at the knee. This investigation aimed to determine the mechanical effects of internal and external tibial rotation offsets on knee kinematics and ligament strains during in vitro simulations of in vivo recorded kinematics. METHOD: A 6-degree-of-freedom robotic manipulator arm was used to articulate 11 cadaveric tibiofemoral joint specimens through simulations of four athletic tasks produced from in vivo recorded kinematics...
February 2, 2018: Clinical Biomechanics
https://www.readbyqxmd.com/read/29416973/transmedial-all-inside-trilink-posterior-cruciate-ligament-reconstruction
#5
Sam K Yasen, Zakk M Borton, Edward M Britton, Harry C Palmer, Adrian J Wilson
Posterior cruciate ligament (PCL) injuries usually constitute part of a multiligament injury. Isolated PCL injuries account for only approximately 3% of all ligament injuries. No consensus on optimal surgical reconstruction exists. The PCL is a double-bundle structure that functions in an anisometric manner. Biomechanical studies have shown that re-creating the PCL femoral double-bundle configuration provides greater stability. We present a 3-socket approach for an anatomic "all-inside" double-bundle PCL reconstruction using our preferred option of a FiberTape (Arthrex, Naples, FL)-reinforced peroneus longus allograft fashioned to create a trifurcate graft: the TriLink technique...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29409674/an-in%C3%A2-vivo-prediction-of-anisometry-and-strain-in-anterior-cruciate-ligament-reconstruction-a-combined-magnetic-resonance-and-dual-fluoroscopic-imaging-analysis
#6
Willem A Kernkamp, Nathan H Varady, Jing-Sheng Li, Tsung-Yuan Tsai, Peter D Asnis, Ewoud R A van Arkel, Rob G H H Nelissen, Thomas J Gill, Samuel K Van de Velde, Guoan Li
PURPOSE: To evaluate the in vivo anisometry and strain of theoretical anterior cruciate ligament (ACL) grafts in the healthy knee using various socket locations on both the femur and tibia. METHODS: Eighteen healthy knees were imaged using magnetic resonance imaging and dual fluoroscopic imaging techniques during a step-up and sit-to-stand motion. The anisometry of the medial aspect of the lateral femoral condyle was mapped using 144 theoretical socket positions connected to an anteromedial, central, and posterolateral attachment site on the tibia...
February 3, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29402583/diagnostic-accuracy-of-sequential-arthroscopic-approach-for-ramp-lesions-of-the-posterior-horn-of-the-medial-meniscus-in-anterior-cruciate-ligament-deficient-knee
#7
Seong Hwan Kim, Sang Hak Lee, Kang-Il Kim, Jae Woo Yang
PURPOSE: To document the diagnostic accuracy and steps for sequential arthroscopic exploration of ramp lesions-peripheral tear within 4 mm of meniscocapsular junction of medial meniscus-associated with anterior cruciate ligament (ACL) injury. METHODS: This was a prospective consecutive study of 195 primary ACL reconstructions with arthroscopic exploration for ramp lesion in 4 steps: (1) standard exploration through the anterolateral portal, (2) through the intercondylar space using a 30° arthroscope, (3) through the intercondylar space using a 70° arthroscope, and (4) after creation of a posteromedial portal...
February 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29399591/underappreciated-factors-to-consider-in-revision-anterior-cruciate-ligament-reconstruction-a-current-concepts-review
#8
REVIEW
Brendan R Southam, Angelo J Colosimo, Brian Grawe
Primary anterior cruciate ligament (ACL) reconstructions (ACLRs) are being performed with increasing frequency. While many of these will have successful outcomes, failures will occur in a subset of patients who will require revision ACLRs. As such, the number of revision procedures will continue to rise as well. While many reviews have focused on factors that commonly contribute to failure of primary ACLR, including graft choice, patient factors, early return to sport, and technical errors, this review focused on several factors that have received less attention in the literature...
January 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29399451/arthroscopic-primary-posterior-cruciate-ligament-repair-with-suture-augmentation
#9
Jelle P van der List, Gregory S DiFelice
Isolated posterior cruciate ligament (PCL) injuries are relatively rare and PCL injuries most commonly occur in the setting of multiligamentous knee injuries. PCL injuries can be treated with primary repair, which has the advantages of preserving the native tissue, maintaining proprioception, and minimal invasive surgery when compared with reconstruction surgery. Historically, primary repair of PCL injuries was performed in all tear types using an open approach, and, although the subjective outcomes were relatively good, patients often had residual laxity...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29395557/all-epiphyseal-anterior-cruciate-ligament-femoral-tunnel-drilling-avoiding-injury-to-the-physis-lateral-collateral-ligament-anterolateral-ligament-and-popliteus-a-3-dimensional-computed-tomography-study
#10
Kevin G Shea, Peter C Cannamela, Peter D Fabricant, Elizabeth B Terhune, John D Polousky, Matthew D Milewski, Allen F Anderson, Theodore J Ganley
PURPOSE: To investigate the relation of the at-risk structures (distal femoral physis, lateral collateral ligament, anterolateral ligament, popliteus, and articular cartilage) during all-epiphyseal femoral tunnel drilling. A second purpose was 2-fold: (1) to develop recommendations for tunnel placement and orientation that anatomically reconstruct the anterior cruciate ligament (ACL) while minimizing the risk of injury to these at-risk structures, and (2) to allow for maximal tunnel length to increase the amount of graft in the socket to facilitate healing...
January 25, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29387653/operative-treatment-for-the-painful-posterior-thigh-after-hamstring-autograft-harvesting
#11
Mikko Laakso, Jussi Kosola, Pekka Niemi, Keijo Mäkelä, Juha Ranne, Sakari Orava, Lasse Lempainen
Background: Semitendinosus (ST) is widely used autograft in anterior cruciate ligament reconstructions (ACLR). Although tendon harvesting is a common procedure, some patients exhibit pain, cramping and dysfunctional at posterior thigh after the ACLR. The formation of the newly regenerated neotendon could be compromised by a new injury or too rapid rehabilitation. We present this clinical entity and the developed surgical technique and share our experience in treatment of these patients...
July 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29387643/correlation-between-time-from-injury-to-surgery-and-the-prevalence-of-ramp-and-hidden-lesions-during-anterior-cruciate-ligament-reconstruction-a-new-diagnostic-algorithm
#12
Gianni Di Vico, Sigismondo Luca Di Donato, Giovanni Balato, Gaetano Correra, Alessio D'Addona, Nicola Maffulli, Donato Rosa
Background: Anterior cruciate ligament tears (ACL) are associated with meniscal lesions, that could involve the posterior horn of the medial meniscus (PHMM). A variety of techniques has been proposed to better visualise the postero-medial (PM) compartment. The aim of the study is to evaluate the prevalence of longitudinal tears of peripheral attachment of the PHMM during arthroscopic ACL reconstruction, and to describe a diagnostic algorithm. Methods: 115 patients who underwent arthroscopic ACL reconstruction were enrolled for the study...
July 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/29383322/chronicity-of-anterior-cruciate-ligament-deficiency-part-1-effects-on-the-tibiofemoral-relationship-before-and-immediately-after-anatomic-acl-reconstruction-with-autologous-hamstring-grafts
#13
Yoshinari Tanaka, Keisuke Kita, Rikio Takao, Hiroshi Amano, Ryohei Uchida, Yoshiki Shiozaki, Yasukazu Yonetani, Kazutaka Kinugasa, Tatsuo Mae, Shuji Horibe
Background: It remains unclear whether the tibiofemoral relationship in the sagittal plane is restored after anatomic anterior cruciate ligament (ACL) reconstruction, particularly in cases of chronic ACL deficiency (ACLD). Hypothesis: Patients with long-term ACLD will exhibit an anteriorly subluxed tibia both preoperatively and immediately postoperatively, even after anatomic reconstruction. Study Design: Cohort study; Level of evidence, 2...
January 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29377306/limb-asymmetry-during-recovery-from-anterior-cruciate-ligament-reconstruction
#14
Kristen E Renner, Christopher T Franck, Thomas K Miller, Robin M Queen
There is limited literature that follows a population of Anterior Cruciate Ligament Reconstruction (ACLR) patients through recovery. Our aim was to examine differences in movement and loading patterns across time and between limbs over four visits during 12 months post-ACLR. We hypothesized that kinematic and kinetic data during a stop-jump would have time and limb dependent differences through 12 months post-surgery. Twenty-three ACLR athletes performed five vertical stop-jumps at 4, 5, 6, and 12 months post-op with motion capture and force plate data collection...
January 29, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29369416/complete-tear-of-the-lateral-meniscus-posterior-root-is-associated-with-meniscal-extrusion-in-anterior-cruciate-ligament-deficient-knees
#15
Yusuke Kamatsuki, Takayuki Furumatsu, Masataka Fujii, Yuya Kodama, Shinichi Miyazawa, Tomohito Hino, Toshifumi Ozaki
This study aimed to evaluate the relationship between preoperative lateral meniscal extrusion (LME) and arthroscopic findings of lateral meniscus posterior root tear (LMPRT) in knees with anterior cruciate ligament (ACL) tear. Thirty-five knees that had LMPRTs with concomitant ACL tears on arthroscopy were evaluated. Patients were divided into two groups, partial and complete root tears, via arthroscopic findings at the time of ACL reconstruction. For comparison, we added two groups, using the same database; 20 normal knees (normal group) and 20 ACL-injured knees without LM injury (intact LM group)...
January 25, 2018: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29362146/protruding-anterior-medial-meniscus-an-indirect-sign-of-posterior-cruciate-ligament-deficiency
#16
Anagha P Parkar, Kristiane Bleskestad, Susanne Løken, Miraude E A P M Adriaensen, Eirik Solheim
BACKGROUND: to examine if PROTruding of the Anterior Medial Meniscus (PROTAMM) could be an indirect sign of PCL deficiency by comparing PROTAMM to passive posterior tibial sagging (PSS) for chronic PCL rupture on routine MRI. METHODS: Patients with PCL reconstruction between 2011 and 2016 were included in a case control study. Primarily cases with combined ACL/PCL injury were excluded. Secondary exclusion criteria were bony fractures, medial meniscus pathology and poor quality MRIs...
February 2018: European Journal of Radiology
https://www.readbyqxmd.com/read/29354470/posterior-capsulotomy-of-the-knee-treatment-of-minimal-knee-extension-deficit
#17
João Luiz Ellera Gomes, Murilo Anderson Leie, Arthur de Freitas Soares, Márcio Balbinotti Ferrari, George Sánchez
The loss of knee extension, even if minimal, is disabling and considerably affects the individual's quality of life. This loss of extension can be a consequence of prior surgery, including a previous anterior cruciate ligament reconstruction. Although this loss of extension may be treated through an isolated arthroscopic procedure, a more severe case may warrant an invasive approach. In these cases, a posterior capsulotomy of the knee may be done if all conservative measures have been exhausted. This procedure has been proven to be safe and effective in the re-establishment of full extension in the setting of a minor flexion contracture of the knee...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354459/arthroscopic-posterior-cruciate-ligament-reconstruction-with-remnant-preservation-using-a-posterior-trans-septal-portal
#18
Dhong Won Lee, Hyeuk Woo Choi, Jin Goo Kim
We describe a surgical technique for arthroscopic posterior cruciate ligament (PCL) reconstruction with remnant preservation of the original PCL fibers using a posterior trans-septal portal approach. Using the transtibial technique and the posterior trans-septal portal approach allows good visualization of the tibial tunnel preparation, easy access to the tibial tunnel without neurovascular injury, and preservation of remnant PCL fibers. In the preparation of the tibial tunnel, we expose the PCL tibial attachment site completely, detach the posterior capsule from the PCL, and preserve the distal stump of the PCL without neurovascular injury...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354438/osteotomy-of-the-tibial-tubercle-for-anteromedialization
#19
Márcio B Ferrari, George Sanchez, Nicholas I Kennedy, Anthony Sanchez, Katrina Schantz, Matthew T Provencher
Patellofemoral instability is a common cause of anterior knee pain, especially in younger and more active patients. Treatment of instability varies considerably depending on the patient's symptoms as well as the cause of the instability. Lateral instability has a particularly broad spectrum of treatment algorithms including patellar taping, arthroscopy, lateral release, medial patellofemoral ligament (MPFL) reconstruction, MPFL repair, and osteotomy of the tibial tubercle for realignment. Acute traumatic lateral dislocation is commonly associated with a tear of the MPFL and, therefore, needs to be addressed...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354414/a-femoral-tunnel-view-test-during-acl-reconstruction
#20
Eduardo Frois Temponi, João Newton Penido Oliveira, Luiz Fernando Machado Soares, Lúcio Honório de Carvalho Júnior
Despite technologic advances in the surgical techniques for anterior cruciate ligament (ACL) reconstruction, some patients continue to have violation of the femoral cortex, commonly referred to as wall blowout. These posterior or lateral cortical breaches lead to loss of graft containment and subsequent difficulty with graft fixation. If this intraoperative error is not promptly recognized and treated, the graft is at an increased risk of premature failure. Thus, in these situations, recognizing the complication and knowing strategies for alternative or salvage fixation are of importance...
August 2017: Arthroscopy Techniques
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