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Posterior cruciate ligament

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https://www.readbyqxmd.com/read/29779140/knee-motion-symmetry-was-not-restored-in-patients-with-unilateral-bi-cruciate-retaining-total-knee-arthroplasty-in-vivo-three-dimensional-kinematic-analysis
#1
Paul Arauz, Yun Peng, Young-Min Kwon
PURPOSE: Although unilateral total knee arthroplasty (TKA) is successful in restoring function, there are concerns in relation to asymmetric gait patterns. Bi-cruciate retaining (BCR) TKA design preserves both anterior and posterior cruciate ligaments with the potential to restore normal joint kinematics. The purpose of this study was to investigate the in vivo three-dimensional (3D) kinematics of the knee in unilateral BCR TKA patients during gait. METHODS: Twenty-nine unilateral BCR TKA patients were evaluated for both knees during treadmill gait using a combined computer tomography and dual fluoroscopic imaging system approach...
May 19, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29778418/correlation-between-translational-and-rotational-kinematic-abnormalities-and-osteoarthritis-like-damage-in-two-in-vivo-sheep-injury-models
#2
Mehdi Shekarforoush, Jillian E Beveridge, David A Hart, Cyril B Frank, Nigel G Shrive
The relations between kinematic abnormalities and post traumatic osteoarthritis have not yet been clearly elucidated. This study was conducted to determine the finite helical axes parameters and the tibiofemoral translation vector in the knee joints of two surgically induced injury sheep models: anterior cruciate ligament and medial collateral ligament transection (ACL/MCL Tx) (n = 5) and lateral meniscectomy (n = 5). We hypothesized that morphological damage in the experimental joints would be correlated to alterations in these kinematic variables...
May 16, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29772990/the-effects-of-meniscal-geometry-on-susceptibility-for-meniscal-and-acl-injury-in-non-arthritic-knees-a-retrospective-case-control-study
#3
Alexander Tejani, Qais Naziri, Preston W Grieco, Robert Pivec, Damon Greene, Bhaveen V Kapadia, Dipal Chatterjee, William P Urban
Prior studies have not found significant differences in meniscal parameters between patients with meniscal and ligamentous injury and those without. The purpose of this study was to determine whether such relationships exist. Clinical records and magnetic resonance images of three subject groups were reviewed. Group 1 solely had meniscal tears (medial/lateral), Group 2 had meniscal tears with concurrent ACL tears, and Group 3 had healthy knees. The mean age of subjects included was 35.9 years (range 8.2-72...
2018: Journal of Long-term Effects of Medical Implants
https://www.readbyqxmd.com/read/29762281/an-increased-lateral-femoral-condyle-ratio-is-a-risk-factor-for-anterior-cruciate-ligament-injury
#4
Thomas R Pfeiffer, Jeremy M Burnham, Jonathan D Hughes, Ajay C Kanakamedala, Elmar Herbst, Adam Popchak, Sven Shafizadeh, James J Irrgang, Richard E Debski, Volker Musahl
BACKGROUND: The purpose of this study was to examine the relationship between distal femoral morphology and anterior cruciate ligament (ACL) injury, ACL reconstruction (ACLR) failure, and contralateral ACL injury. It was hypothesized that increased posterior femoral condylar depth, quantified as the lateral femoral condyle ratio, would correlate with increased risk of primary ACL injuries, ACLR failures, and contralateral ACL injuries. METHODS: The charts of consecutive patients who underwent arthroscopic knee surgery at an academic medical center from 2012 to 2016 with minimum follow-up of 24 months were retrospectively reviewed...
May 16, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29752053/anterior-laxity-lateral-tibial-slope-and-in-situ-acl-force-differentiate-knees-exhibiting-distinct-patterns-of-motion-during-a-pivoting-event-a-human-cadaveric-study
#5
Robert N Kent, Mark J Amirtharaj, Brendan M Hardy, Andrew D Pearle, Thomas L Wickiewicz, Carl W Imhauser
Knee instability following anterior cruciate ligament (ACL) rupture compromises function and increases risk of injury to the cartilage and menisci. To understand the biomechanical function of the ACL, previous studies have primarily reported the net change in tibial position in response to multiplanar torques, which generate knee instability. In contrast, we retrospectively analyzed a cohort of 13 consecutively tested cadaveric knees and found distinct motion patterns, defined as the motion of the tibia as it translates and rotates from its unloaded, initial position to its loaded, final position...
April 11, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29746389/effect-of-sand-on-knee-load-during-a-single-leg-jump-task-implications-for-injury-prevention-and-rehabilitation-programs
#6
Mark C Richardson, Sinead Murphy, Tom Macpherson, Bryan English, Iain Spears, Paul Chesterton
Richardson, MC, Murphy, S, Macpherson, T, English, B, Spears, I, and Chesterton, P. Effect of sand on knee load during a single-leg jump task: implications for injury prevention and rehabilitation programs. J Strength Cond Res XX(X): 000-000, 2018-The purpose of the study was to determine potential differences in landing strategies and subsequent joint loads at the knee (knee abduction moment [KAM], anterior-posterior [AP] tibial translation, and total knee shear force) when jumping onto sand and firm ground from both a level surface and a 30-cm height...
May 7, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29744321/morphology-of-intra-articular-structures-and-histology-of-menisci-of-knee-joint
#7
Monika Gupta, Parmod Kumar Goyal, Poonam Singh, Anu Sharma
Introduction: Menisci and cruciate ligaments are intra-articular structures of knee, and injury to these structures is common. Morphometric data gained in the study will help in analyzing the variations among humans and correlating it with the possibility, location, and type of injuries as well as better interpretation of structures during magnetic resonance imaging and arthroscopy which will further help in reconstructive surgeries of knee. Materials and Methods: Width and thickness of the medial menisci (MM), lateral menisci (LM), and maximum length and width of anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) were taken on twenty knees...
April 2018: International Journal of Applied and Basic Medical Research
https://www.readbyqxmd.com/read/29741400/anterolateral-ligament-reconstruction-protects-the-repaired-medial-meniscus-a-comparative-study-of-383-anterior-cruciate-ligament-reconstructions-from-the-santi-study-group-with-a-minimum-follow-up-of-2-years
#8
Bertrand Sonnery-Cottet, Adnan Saithna, William G Blakeney, Herve Ouanezar, Amrut Borade, Matt Daggett, Mathieu Thaunat, Jean-Marie Fayard, Jean Romain Delaloye
BACKGROUND: The prevalence of osteoarthritis after successful meniscal repair is significantly less than that after failed meniscal repair. PURPOSE: To determine whether the addition of anterolateral ligament reconstruction (ALLR) confers a protective effect on medial meniscal repair performed at the time of anterior cruciate ligament reconstruction (ACLR). STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Retrospective analysis of prospectively collected data was performed to include all patients who had undergone primary ACLR with concomitant posterior horn medial meniscal repair through a posteromedial portal between January 2013 and August 2015...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29736872/use-of-tt-pcl-versus-tt-tg
#9
REVIEW
Jacqueline M Brady, Adam S Rosencrans, Beth E Shubin Stein
PURPOSE OF REVIEW: The tibial tubercle-to-trochlear groove (TT-TG) distance and tibial tubercle-to-posterior cruciate ligament (TT-PCL) distance have both been proposed for use in the evaluation of patients with patellofemoral instability. RECENT FINDINGS: While the TT-TG value may be confounded by several factors, including age, gender, body mass index, and varying degrees of knee flexion on cross-sectional imaging, recent literature supports its utility for differentiation of patients with and without patellofemoral instability, and stratification of patients with and without coronal malalignment...
May 8, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29730857/the-role-of-osteotomy-for-the-treatment-of-pcl-injuries
#10
REVIEW
João V Novaretti, Andrew J Sheean, Jayson Lian, Joseph De Groot, Volker Musahl
PURPOSE OF REVIEW: The purposes of this review are to (1) describe the anatomic and biomechanical rationale for high tibial osteotomy (HTO) in the setting of posterior cruciate ligament (PCL) deficiency, (2) review the indications for concomitant HTO and PCL reconstruction, (3) provide guidance for the clinical assessment of the patient with suspected PCL deficiency, and (4) summarize the key surgical steps necessary to attain the appropriate sagittal and coronal plane corrections. RECENT FINDINGS: The preponderance of available biomechanical data pertaining to the PCL-deficient knee suggests that an increased proximal tibial slope limits posterior tibial translation under axial compressive loads...
May 5, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29730210/evaluation-of-anterolateral-ligament-injuries-and-concomitant-lesions-on-magnetic-resonance-imaging-after-acute-anterior-cruciate-ligament-rupture
#11
Dhong Won Lee, Ji Hwan Lee, Ji Nam Kim, Sung Gyu Moon, Na Ra Kim, Du Han Kim, Jin Goo Kim
PURPOSE: To evaluate the prevalence and characteristics of anterolateral ligament (ALL) injuries with a ruptured acute anterior cruciate ligament (ACL) and to analyze the presence of concomitant bone contusions and meniscal lesions. METHODS: From March 2015 to March 2017, we retrospectively analyzed 378 patients who underwent primary ACL reconstructions. Using magnetic resonance imaging, we evaluated the presence of ALL injury and concomitant lesions within 3 weeks of the injury...
May 2, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29729762/editorial-commentary-the-all-epiphyseal-anterior-cruciate-ligament-distal-femoral-approach-sockets-or-tunnels
#12
EDITORIAL
Frank A Cordasco
I believe that the distal femoral approach for anterior cruciate ligament reconstruction in the skeletally immature athlete with 3 to 6 years of remaining growth is best performed with an all-inside, all-epiphyseal technique using sockets rather than an outside-in approach creating tunnels. A shorter socket rather than a longer tunnel exposes a smaller surface area of the lateral distal femoral physis to potential compromise and resultant valgus malalignment. In addition, exiting the lateral femoral aspect of the epiphysis with a full-diameter tunnel as compared with a smaller diameter drill hole used to prepare a socket places the posterior articular cartilage, the lateral collateral ligament and anterolateral ligament footprints, and the popliteus tendon insertion at risk...
May 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29728834/graft-sources-do-not-affect-to-the-outcome-of-transtibial-posterior-cruciate-ligament-reconstruction-a-systematic-review
#13
Yong Seuk Lee, Seung Hoon Lee, O-Sung Lee
INTRODUCTION: Despite numerous published reports on posterior cruciate ligament (PCL) reconstruction in the past 30 years, the ideal graft source remains unclear, and few objective scientific data have been published that thoroughly evaluate the long-term outcomes according to the graft source. We, therefore, conducted a systematic review of available high-quality comparative studies that evaluated clinical and objective stability testing to compare the different graft sources for PCL reconstruction...
May 4, 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29721691/nonoperative-treatment-of-pcl-injuries-goals-of-rehabilitation-and-the-natural-history-of-conservative-care
#14
REVIEW
Dean Wang, Jessica Graziano, Riley J Williams, Kristofer J Jones
PURPOSE OF REVIEW: To review the current practices of nonoperative management of posterior cruciate ligament (PCL) injuries, the natural history of conservative care, and the latest PCL rehabilitation strategies. RECENT FINDINGS: PCL injuries often occur as part of a multiligamentous knee injury and occasionally occur in isolation. Although patients may be able to tolerate or compensate for a PCL-deficient knee, long-term outcomes after conservative care demonstrate a high rate of arthrosis in the medial and patellofemoral compartments resulting from altered knee kinematics and loads...
May 2, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29715229/lateralization-of-the-tibial-tubercle-in-recurrent-patellar-dislocation-verification-using-multiple-methods-to-evaluate-the-tibial-tubercle
#15
Keiji Tensho, Hiroki Shimodaira, Yusuke Akaoka, Suguru Koyama, Daisuke Hatanaka, Shota Ikegami, Hiroyuki Kato, Naoto Saito
BACKGROUND: The tibial tubercle deviation associated with recurrent patellar dislocation (RPD) has not been studied sufficiently. New methods of evaluation were used to verify the extent of tubercle deviation in a group with patellar dislocation compared with that in a control group, the frequency of patients who demonstrated a cutoff value indicating that tubercle transfer was warranted on the basis of the control group distribution, and the validity of these methods of evaluation for diagnosing RPD...
May 2, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29709723/the-effect-of-functional-bracing-on-the-arthrokinematics-of-anterior-cruciate-ligament-injured-knees-during-lunge-exercise
#16
Maryam Jalali, Farzam Farahmand, Fateme Esfandiarpour, Seyed Ali Golestanha, Mohammad Akbar, Amirhosein Eskandari, Seyed Ebrahim Mousavi
BACKGROUND: Functional knee braces are extensively used for partially and completely torn anterior cruciate ligament (ACL) patients and those who have undergone ACL graft reconstruction, in order to support the healing ACL, improve the joint's functional stability, and restore the normal joint kinematics. RESEARCH QUESTION: Does wearing braces alter the arthrokinematics of the ACL deficient knees during lung exercise? METHODS: For ten male unilateral ACL deficient subjects, 3D knee models were reconstructed from CT images, acquired in rest position...
April 22, 2018: Gait & Posture
https://www.readbyqxmd.com/read/29705911/drilling-through-anteromedial-portal-with-a-femoral-aiming-device-ensures-a-sufficient-length-and-a-proper-graft-position-and-prevents-posterior-wall-breakage-during-anterior-cruciate-ligament-reconstruction
#17
Hasan Bombaci, Faruk Aykanat
OBJECTIVE: The aim of this study was to evaluate the characteristics of the femoral tunnel (FT) which was drilled through the AM portal by using a femoral aimer device and AP stability of the knee. METHODS: Thirty-eight patients, with the mean age 29.6 (range: 20-43) years, were evaluated after ACL reconstruction. The mean follow-up time was 31.9 (range: 16-57) months. The FT was drilled using a femoral aimer with different offset according to the graft size measured, through the AM portal...
April 28, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/29700585/location-of-the-femoral-tunnel-aperture-during-single-bundle-posterior-cruciate-ligament-reconstruction-outside-in-versus-inside-out-techniques
#18
Jun-Ho Kim, Hoon-Young Kim, Dae-Hee Lee
PURPOSE: Placement of the femoral tunnel is critical to graft function after posterior cruciate ligament (PCL) reconstruction. To date, however, the location of the femoral tunnel aperture has not been compared by in vivo 3-dimensional computed tomography (3D-CT) during PCL reconstruction with the outside-in (OI) and inside-out (IO) techniques. This study used 3D-CT analysis to compare the location of the femoral tunnel aperture in patients who underwent PCL reconstruction with the OI and IO techniques...
April 26, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29691761/open-tibial-inlay-pcl-reconstruction-surgical-technique-and-clinical-outcomes
#19
REVIEW
Evan E Vellios, Kristofer J Jones, David R McAllister
PURPOSE OF REVIEW: To review the current literature on clinical outcomes following open tibial inlay posterior cruciate ligament (PCL) reconstruction and provide the reader with a detailed description of the author's preferred surgical technique. RECENT FINDINGS: Despite earlier biomechanical studies which demonstrated superiority of the PCL inlay technique when compared to transtibial techniques, recent longitudinal cohort studies have shown no significant differences in clinical or functional outcomes at 10-year follow-up...
April 24, 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29691173/cruciate-retaining-vs-posterior-stabilized-primary-total-arthroplasty-clinical-outcome-comparison-with-a-minimum-follow-up-of-10-years
#20
Ricardo Serna-Berna, Alejandro Lizaur-Utrilla, Maria F Vizcaya-Moreno, Francisco A Miralles Muñoz, Blanca Gonzalez-Navarro, Fernando A Lopez-Prats
BACKGROUND: Controversy continues regarding whether the posterior cruciate ligament should be retained or removed during total knee arthroplasty (TKA) procedure. The objective was to compare the clinical outcomes with a minimum follow-up of 10 years between patients who received contemporary cruciate-retaining or posterior-stabilized primary TKA. METHODS: Case-control study of 268 patients who underwent cruciate-retaining TKA vs 211 to posterior-stabilized design, with the same arthroplasty system, and a minimum follow-up of 10 years...
March 17, 2018: Journal of Arthroplasty
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