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https://www.readbyqxmd.com/read/28615108/kinematics-of-different-components-of-the-posterolateral-corner-of-the-knee-in-the-lateral-collateral-ligament-intact-state-a-human-cadaveric%C3%A2-study
#1
Christoph Domnick, Karl-Heinz Frosch, Michael J Raschke, Nils Vogel, Martin Schulze, Mathias von Glahn, Tobias C Drenck, Mirco Herbort
PURPOSE: To determine the static stabilizing effects of different anatomical structures of the posterolateral corner (PLC) of the knee in the lateral collateral ligament (LCL)-intact state. METHODS: Thirteen fresh-frozen human cadaveric knees were dissected and tested using an industrial robot with an optical tracking system. Kinematics were determined for 134 N anterior/posterior loads, 10 N m valgus/varus loads, and 5 N m internal/external rotatory loads in 0°, 20°, 30°, 60°, and 90° of knee flexion...
June 11, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28607939/the-role-of-the-peripheral-passive-rotation-stabilizers-of-the-knee-with-intact-collateral-and-cruciate-ligaments-a-biomechanical-study
#2
Alexander R Vap, Jason M Schon, Gilbert Moatshe, Raphael S Cruz, Alex W Brady, Grant J Dornan, Travis Lee Turnbull, Robert F LaPrade
BACKGROUND: A subset of patients have clinical internal and/or external knee rotational instability despite no apparent injury to the cruciate or collateral ligaments. PURPOSE/HYPOTHESIS: The purpose of this study was to assess the effect of sequentially cutting the posterolateral, anterolateral, posteromedial, and anteromedial structures of the knee on rotational stability in the setting of intact cruciate and collateral ligaments. It was hypothesized that cutting of the iliotibial band (ITB), anterolateral ligament and lateral capsule (ALL/LC), posterior oblique ligament (POL), and posteromedial capsule (PMC) would significantly increase internal rotation, while sectioning of the anteromedial capsule (AMC) and the popliteus tendon and popliteofibular ligament (PLT/PFL) would lead to a significant increase in external knee rotation...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28589876/short-term-results-after-arthroscopic-resection-of-synovial-plicae-in-the-radiohumeral-joint-a-case-series-of-64-procedures
#3
Jens Brahe Pedersen, Pia Kjær Kristensen, Peter Mønsted, Theis Muncholm Thillemann
INTRODUCTION: Painful Synovial Plicae (SP) in the posterolateral corner of the radiohumeral joint may be confused with lateral epicondylitis. The SP may impinge between the radial head and the humeral capitellum causing pain and snapping. The aim of this study was to evaluate the short-term results after arthroscopic plica resection of the elbow. METHODS: In this case series, we included a consecutive series of 64 arthroscopies (60 patients) with arthroscopic plica resection of the elbow...
2017: SICOT-J
https://www.readbyqxmd.com/read/28589159/demographics-and-injuries-associated-with-knee-dislocation-a-prospective-review-of-303-patients
#4
Gilbert Moatshe, Grant J Dornan, Sverre Løken, Tom C Ludvigsen, Robert F LaPrade, Lars Engebretsen
BACKGROUND: Information on the incidence, injury mechanisms, ligament injury patterns, and associated injuries of knee dislocations is lacking in the literature. There is a need to characterize ligament injury patterns and associated injuries in knee dislocations to avoid missing common associated diagnoses and to plan surgical treatment. PURPOSE: To evaluate patient demographics, ligament injury patterns and associated injury patterns, and associated injuries in patients with knee dislocation...
May 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28583062/multiple-ligament-reconstruction-for-absent-cruciate-and-a-congenital-short-femur-case-report-and-review-of-the-literature
#5
Daniel Kaplan, Taylor Jazrawi, Jason Capo, Eric Strauss
Congenital short femur syndrome is a rare condition affecting about 0.017 of every 1,000 births. Patients frequently have ligamentous abnormalities, most frequently aplastic or hypoplastic cruciate ligaments. Advances in limb lengthening procedures have increased movement expectations for these patients, thus necessitating surgical treatment for their ligamentous abnormalities. An individual case is presented, including history, physical exam, and imaging demonstrating both the short femur and absent cruciate ligaments...
April 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28580250/combined-all-inside-anterior-cruciate-ligament-reconstruction-and-minimally-invasive-posterolateral-corner-reconstruction-using-ipsilateral-semitendinosus-and-gracilis-autograft
#6
Zakk M Borton, Sam K Yasen, Edward M Britton, Samuel R Heaton, Harry C Palmer, Adrian J Wilson
The anterior cruciate ligament (ACL) is the most commonly injured knee ligament, particularly among adolescents and young adults. Unrecognized posterolateral laxity is understood as a major cause of ACL reconstruction failure, and concomitant injury to the posterolateral corner (PLC) is prevalent and underdetected. We advocate screening all ACL-deficient knees for PLC injury and present a technique combining minimally invasive PLC reconstruction with anatomic all-inside ACL reconstruction. The combined procedure uses only the ipsilateral hamstring tendons representing a major surgical advantage over traditional management approaches...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28580244/arthroscopic-technique-for-isolated-posterolateral-rotational-instability-of-the-knee
#7
Yasuo Ohnishi, Cecilia Pascual-Garrido, Hiroto Kumagae, Akinori Sakai, Soshi Uchida
Isolated posterolateral corner injury is an uncommon injury that could be a source of unexplained knee pain and dysfunction. Most of these patients present instability caused by concomitant ligament injuries. Numerous studies have shown open approach posterolateral repair or reconstruction surgeries to restore posterolateral rotational stability. Still, there is a certain population of patients who present posterolateral rotation instability without significant injury to the fibular collateral ligament, popliteal fibular ligament, and popliteus tendon...
April 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28454998/finite-element-analysis-of-the-biomechanical-effects-of-3-posterolateral-corner-reconstruction-techniques-for-the-knee-joint
#8
Kyoung-Tak Kang, Yong-Gon Koh, Juhyun Son, Sung-Jae Kim, Sungryul Choi, Moonki Jung, Sung-Hwan Kim
PURPOSE: To compare the forces exerted on the cruciate ligaments and the contact stresses on the tibiofemoral (TF) and patellofemoral (PF) joints with respect to 3 different tibial- and fibular-based posterolateral corner (PLC) reconstructions under dynamic loading conditions. METHODS: A subject-specific finite element knee model was developed by using 3-dimensional anatomic data from motion captures in gait and squat activities, including in vivo knee joint kinematics and muscle forces for the single subject...
April 25, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28451605/the-impact-of-osseous-malalignment-and-realignment-procedures-in-knee-ligament-surgery-a-systematic-review-of-the-clinical-evidence
#9
REVIEW
Thomas Tischer, Jochen Paul, Dietrich Pape, Michael T Hirschmann, Andreas B Imhoff, Stefan Hinterwimmer, Matthias J Feucht
BACKGROUND: Failure rates of knee ligament surgery may be high, and the impact of osseous alignment on surgical outcome remains controversial. Basic science studies have demonstrated that osseous malalignment can negatively affect ligament strain and that realignment procedures may improve knee joint stability. HYPOTHESIS/PURPOSE: The purpose of this review was to summarize the clinical evidence concerning the impact of osseous malalignment and realignment procedures in knee ligament surgery...
March 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28447141/the-iliotibial-band-and-anterolateral-capsule-have-a-combined-attachment-to-the-segond-fracture
#10
Marcio Albers, Humza Shaikh, Elmar Herbst, Kentaro Onishi, Kanto Nagai, Volker Musahl, Freddie H Fu
The purpose of this report was to describe the injury mechanism, surgical findings, and outcomes in a 21-year-old professional female football player who presented with a complete anterior cruciate ligament (ACL) rupture and Segond fracture. Interview and video analysis were performed to elicit the injury mechanism. Clinical examination and imaging revealed a complete ACL tear, Segond fracture, lateral meniscus tear, MCL sprain, and posterolateral corner sprain. Examination under anaesthesia revealed Grade 2 pivot shift and varus/valgus instability...
April 26, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28424850/incidence-and-mri-characterization-of-the-spectrum-of-posterolateral-corner-injuries-occurring-in-association-with-acl-rupture
#11
Eduardo Frois Temponi, Lúcio Honório de Carvalho Júnior, Adnan Saithna, Mathieu Thaunat, Bertrand Sonnery-Cottet
OBJECTIVE: To determine the incidence and MRI characteristics of the spectrum of posterolateral corner (PLC) injuries occurring in association with anterior cruciate ligament (ACL) rupture. MATERIALS AND METHODS: We carried out a level IV, retrospective case series study. All patients clinically diagnosed with an ACL rupture between July 2015 and June 2016 who underwent MRI of the knee were included in the study. In addition to standard MRI knee reporting, emphasis was placed on identifying injury to the PLC and a description of involvement of these structures by two musculoskeletal radiologists...
August 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28409145/extra-articular-and-transcutaneous-migration-of-the-poly-l-d-lactide-interference-screw-after-popliteal-tendon-reconstruction
#12
Camilo Partezani Helito, Noel O Foni, Marcelo Batista Bonadio, José Ricardo Pécora, Marco Kawamura Demange, Fabio Janson Angelini
Knee ligament reconstructions are commonly performed orthopedic procedures. Graft fixation is generally performed with metallic or absorbable interference screws. In a recent study, only ten reports of screw migration were retrieved; of these, only one was not related to the anterior cruciate ligament, and the majority was related to the use of poly-l-lactic acid (PLLA) screws. Only one case retrieved in the literature reported screw migration in reconstructions of the posterolateral corner, and that was to the intra-articular region...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28361277/the-effect-of-a-dynamic-pcl-brace-on-patellofemoral-compartment-pressures-in-pcl-and-pcl-plc-deficient-knees
#13
Tyler Welch, Thomas Keller, Ruben Maldonado, Melodie Metzger, Karen Mohr, Ronald Kvitne
BACKGROUND: The natural history of posterior cruciate ligament (PCL) deficiency includes the development of arthrosis in the patellofemoral joint (PFJ). The purpose of this biomechanical study was to evaluate the hypothesis that dynamic bracing reduces PFJ pressures in PCL- and combined PCL/posterolateral corner (PLC)-deficient knees. STUDY DESIGN: Controlled Laboratory Study. METHODS: Eight fresh frozen cadaveric knees with intact cruciate and collateral ligaments were included...
December 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/28355671/multiligamentous-injury-of-the-knee-mri-diagnosis-and-injury-patterns
#14
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/28343807/dial-test-unrecognized-predictor-of-anterior-cruciate-ligament-deficiency
#15
Brian Forsythe, Bryan M Saltzman, Gregory L Cvetanovich, Michael J Collins, Thomas A Arns, Nikhil N Verma, Brian J Cole, Bernard R Bach
PURPOSE: To evaluate the effect of isolated anterior cruciate ligament (ACL) injury on tibial external rotation as measured by the dial test. METHODS: Twenty-seven consecutive patients scheduled to undergo a primary ACL reconstruction were prospectively evaluated. Physical examination and magnetic resonance imaging findings were analyzed to exclude multiligamentous injury. The dial test was performed with the patient under anesthesia with a goniometer on both the affected and unaffected knees at 30° and 90°...
March 23, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28268001/return-to-duty-following-combat-related-multi-ligamentous-knee-injury
#16
Aaron E Barrow, Andrew J Sheean, Travis C Burns
INTRODUCTION: This retrospective cohort study characterized injury patterns, treatment practices, and identified the return to duty (RTD) rate following combat-related multi-ligament knee injuries (MLKI). PATIENTS AND METHODS: We evaluated injury characteristics and treatment methods of 46 military service members who had sustained a MLKI during combat activity. The primary clinical outcome measure was ability to return to active military duty. Secondary outcomes included subjective pain score, knee motion, knee instability, and use of ambulatory assistive device...
February 22, 2017: Injury
https://www.readbyqxmd.com/read/28160014/the-incidence-and-clinical-outcomes-of-peroneal-nerve-injuries-associated-with-posterolateral-corner-injuries-of-the-knee
#17
T J Ridley, Mark A McCarthy, Matthew J Bollier, Brian R Wolf, Annunziato Amendola
PURPOSE: The purpose of the study was to investigate the incidence of complete and partial peroneal nerve injuries in patients with posterolateral corner (PLC) knee injuries; additionally, to compare patient-reported outcomes among patients with and without peroneal nerve injury and to examine the factors that predict the recovery of nerve function. METHODS: A retrospective chart review was performed to identify patients who underwent PLC reconstruction or repair from 2000 to 2012 with a minimum 6-month clinical follow-up...
February 3, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28077395/the-effects-of-posterior-cruciate-ligament-deficiency-on-posterolateral-corner-structures-under-gait-and-squat-loading-conditions-a-computational-knee-model
#18
K-T Kang, Y-G Koh, M Jung, J-H Nam, J Son, Y H Lee, S-J Kim, S-H Kim
OBJECTIVES: The aim of the current study was to analyse the effects of posterior cruciate ligament (PCL) deficiency on forces of the posterolateral corner structure and on tibiofemoral (TF) and patellofemoral (PF) contact force under dynamic-loading conditions. METHODS: A subject-specific knee model was validated using a passive flexion experiment, electromyography data, muscle activation, and previous experimental studies. The simulation was performed on the musculoskeletal models with and without PCL deficiency using a novel force-dependent kinematics method under gait- and squat-loading conditions, followed by probabilistic analysis for material uncertain to be considered...
January 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28065990/delayed-diagnosis-of-an-isolated-posterolateral-corner-injury-a-case-report
#19
Patrick Welsh, Christopher DeGraauw, David Whitty
INTRODUCTION: Isolated injuries to the posterolateral corner of the knee are a rare and commonly missed injury associated with athletic trauma, motor vehicle accidents, and falls. Delayed or missed diagnoses can negatively impact patient prognosis, contributing to residual instability, chronic pain, and failure of surgical repair to other ligaments. CASE PRESENTATION: A 44-year-old male CrossFit athlete presented with a history of two non-contact hyperextension injuries to his left knee while walking on ice...
December 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/28058447/-posterior-cruciate-ligament-injuries
#20
K F Schüttler, E Ziring, S Ruchholtz, T Efe
Posterior cruciate ligament (PCL) injuries are still often overlooked and treatment of a ruptured PCL is inherently different in comparison to anterior cruciate ligaments (ACL). Conservative treatment is the first-line therapy for acute isolated PCL injuries leading to good clinical and biomechanical results. Injuries to the PCL combined with rupture of other stabilizing ligaments, such as the collateral ligaments or the posterolateral corner of the knee joint are treated surgically. The same is true for high grade chronic PCL insufficiency...
January 2017: Der Unfallchirurg
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