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https://www.readbyqxmd.com/read/28160014/the-incidence-and-clinical-outcomes-of-peroneal-nerve-injuries-associated-with-posterolateral-corner-injuries-of-the-knee
#1
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
#2
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
#3
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
#4
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
https://www.readbyqxmd.com/read/28002906/tears-of-popliteomeniscal-fascicles-diagnostic-and-clinical-implications-a-review-of-the-evidence
#5
R Papalia, R Simonetta, G Di Vico, G Torre, L Saccone, J Espregueira-Mendes, V Denaro
Postero-lateral corner of the knee is composed of several structures including the popliteo-meniscal fascicles (PMFs). These fibrous structures form a stable ligamentous complex around the popliteus tendon, which stabilize the lateral meniscus, increasing the strength of postero-lateral corner. Studies were retrieved through an electronic search of CINAHL, EMBASE, and Pub-Med, until May 2016. Studies in English, Italian, French, and Spanish were considered for inclusion. Randomized controlled trials, prospective and retrospective comparative studies, case series, and case reports were included...
October 2016: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/27984448/novel-spiked-washer-repair-is-biomechanically-superior-to-suture-and-bone-tunnels-for-arcuate-fracture-repair
#6
Saman Vojdani, Laviel Fernandez, Jian Jiao, Tyler Enders, Steven Ortiz, Liangjun Lin, Yi-Xian Qin, David E Komatsu, James Penna, Charles J Ruotolo
OBJECTIVES: Injuries to the posterolateral corner of the knee can lead to chronic degenerative changes, external rotation instability, and varus instability if not repaired adequately. A proximal fibula avulsion fracture, referred to as an arcuate fracture, has been described in the literature, but a definitive repair technique has yet to be described. The objective of this study was to present a novel arcuate fracture repair technique, using a spiked-washer with an intramedullary screw, and to compare its biomechanical integrity to a previously described suture and bone tunnel method...
March 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27871653/surgical-management-and-treatment-of-the-anterior-cruciate-ligament-posterolateral-corner-injured-knee
#7
REVIEW
Nicholas I Kennedy, Christopher M LaPrade, Robert F LaPrade
Posterolateral knee injuries occur more commonly than in the past. These injuries most commonly occur concurrent with cruciate ligament tears. The main stabilizers of the posterolateral knee are the fibular collateral ligament, the popliteus tendon, and the popliteofibular ligament. These static stabilizers function to prevent increased varus, external rotation, and coupled posterolateral rotation of the knee. The most important clinical tests to diagnose posterolateral knee injuries are the varus stress test, posterolateral drawer, and dial tests...
January 2017: Clinics in Sports Medicine
https://www.readbyqxmd.com/read/27806878/validation-of-varus-stress-radiographs-for-anterior-cruciate-ligament-and-posterolateral-corner-knee-injuries-a-biomechanical-study
#8
Lucas S McDonald, Robert A Waltz, Joseph R Carney, Christopher B Dewing, Joseph R Lynch, Dean B Asher, Dustin J Schuett, Lance E LeClere
PURPOSE: The purpose of this study was to determine the effect of isolated anterior cruciate ligament (ACL) insufficiency on the radiographic varus stress test, and to provide reference data for the increase in lateral compartment opening under varus stress for a combined ACL and PLC injury. METHODS: Ten cadaveric lower extremities were fixed to a jig in 20° of knee flexion. Twelve Newton-meter (Nm) and clinician-applied varus loads were tested, first with intact knee ligaments, followed by sequential sectioning of the ACL, fibular collateral ligament (FCL), popliteus tendon and the popliteofibular ligament (PFL)...
December 2016: Knee
https://www.readbyqxmd.com/read/27726747/unraveling-the-posterolateral-corner-of-the-knee
#9
Humberto G Rosas
Although rare, posterolateral corner (PLC) injuries can result in sustained instability and failed cruciate ligament reconstruction if they are not diagnosed. The anatomy of the PLC was once thought to be perplexing and esoteric-in part because of the varying nomenclature applied to this region in the literature, which added unnecessary complexity. More recently, three major structures have been described as the primary stabilizers of the PLC on the basis of biomechanical study findings: the lateral collateral ligament, popliteus tendon, and popliteofibular ligament...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27709059/medial-opening-wedge-proximal-tibial-osteotomy
#10
Jorge Chahla, Chase S Dean, Justin J Mitchell, Gilbert Moatshe, Raphael Serra Cruz, Robert F LaPrade
Genu varus malalignment can lead to medial compartment overload and progression of ipsilateral compartment osteoarthritis. To slow this process, a medial opening wedge proximal tibial osteotomy (PTO) can be performed. This type of PTO is indicated in patients with genu varus malalignment and isolated medial compartment osteoarthritis of the knee, prior to or concurrent with medial compartment cartilage procedures or meniscal transplants, chronic posterolateral corner deficiency, or chronic anterior cruciate ligament deficiency...
August 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27703824/spontaneous-recurrent-hemarthrosis-of-the-knee-a-report-of-two-cases-with-a-source-of-bleeding-detected-during-arthroscopic-surgery-of-the-knee-joint
#11
Eisuke Nomura, Hisatada Hiraoka, Hiroya Sakai
We report two cases of the spontaneous recurrent hemarthrosis of the knee. In these cases lateral meniscus was severely torn and a small tubular soft tissue with pulsation was identified on the synovium in the posterolateral corner during arthroscopic surgery of the knee joint. Gentle grasping of this tissue by forceps led to pulsating bleeding, which stopped by electrocoagulation. This soft tissue was considered a source of bleeding, since no recurrence of hemarthrosis was observed for more than four years after surgery...
2016: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/27692105/large-fracture-of-the-anteromedial-tibial-plateau-with-isolated-posterolateral-knee-corner-injury-case-series-of-an-often-missed-unusual-injury-pattern
#12
Jordi Tomás-Hernández, Joan Minguell Monyart, Jordi Teixidor Serra, Merce Reverté Vinaixa, Ernesto Guerra Farfan, Vicente Molero García, Enric Castellet Feliu
Tibial plateau fractures are a heterogeneous group of lesions with multiple fracture patterns. They are often associated with soft tissue injuries, the lateral meniscus and the anterior cruciate ligament (ACL) being the most common structures affected. The purpose of this article is to present a case series of an often missed unusual injury pattern that consists on the association of a large anteromedial tibial plateau fracture with a posterolateral (PL) knee corner injury without involvement of the cruciate ligaments...
September 2016: Injury
https://www.readbyqxmd.com/read/27685766/the-hoop-plate-for-posterior-bicondylar-shear-tibial-plateau-fractures-description-of-a-new-surgical-technique
#13
Vincenzo Giordano, Joseph Schatzker, Mauricio Kfuri
High-energy fractures of the proximal tibia with extensive fragmentation of the posterior rim of the tibial plateau are challenging. This technique aims to describe a method on how to embrace the posterior rim of the tibial plateau by placing a horizontal precontoured one-third tubular plate wrapped around its corners. This method, which we named "hoop plating," is mainly indicated for cases of crushed juxta-articular rim fractures, aiming to restore cortical containment of the tibial plateau. Through a lateral approach with a fibular head osteotomy (Lobenhoffer approach), both anterolateral and posterolateral fragments are directly reduced and supported by a one-third tubular plate of adequate length...
September 29, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27651396/tibial-slope-strongly-influences-knee-stability-after-posterior-cruciate-ligament-reconstruction
#14
Clemens Gwinner, Andreas Weiler, Manoussos Roider, Frederik M Schaefer, Tobias M Jung
BACKGROUND: The reported failure rate after posterior cruciate ligament (PCL) reconstruction remains high. Previous studies have shown that the tibial slope (TS) influences sagittal plane laxity. Consequently, alterations of TS might have an effect on postoperative knee stability after PCL reconstruction. HYPOTHESIS: We hypothesized that flattening of TS is associated with increased posterior laxity after PCL reconstruction. STUDY DESIGN: Cohort study; Level of evidence 3...
February 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27643766/imaging-of-athletic-injuries-of-knee-ligaments-and-menisci-sports-imaging-series
#15
Ali M Naraghi, Lawrence M White
Acute knee injuries are a common source of morbidity in athletes and if overlooked may result in chronic functional impairment. Magnetic resonance (MR) imaging of the knee has become the most commonly performed musculoskeletal MR examination and is an indispensable tool in the appropriate management of the injured athlete. Meniscal and ligamentous tearing are the most frequent indications for surgical intervention in sports injuries and an understanding of the anatomy, biomechanics, mechanisms of injury, and patterns of injury are all critical to accurate diagnosis and appropriate management...
October 2016: Radiology
https://www.readbyqxmd.com/read/27620470/morphology-of-the-fibular-insertion-of-the-posterolateral-corner-and-biceps-femoris-tendon
#16
Hirotaka Takahashi, Goro Tajima, Shuhei Kikuchi, Jun Yan, Yoichi Kamei, Moritaka Maruyama, Atsushi Sugawara, Takaaki Saigo, Minoru Doita
PURPOSE: To clarify the fibular head insertion of the fibular collateral ligament (FCL), popliteofibular ligament (PFL), and biceps femoris tendon and related osseous landmarks on three-dimensional (3-D) images. METHODS: Twenty-one non-paired, formalin-fixed human cadaveric knees were evaluated in this study. The fibular head insertions of the FCL, PFL and biceps femoris tendon were identified and marked. 3-D images were created, and the surface area, location, positional relationships, and morphology of the fibular insertions of the FCL, PFL, and biceps femoris tendon and related osseous structures were analysed...
January 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27525183/conservative-management-of-an-isolated-grade-iii-lateral-collateral-ligament-injury-in-an-adolescent-multi-sport-athlete-a-case-report
#17
M Alex Haddad, Justin M Budich, Brian J Eckenrode
STUDY DESIGN: Case report. BACKGROUND: Isolated, grade III lateral collateral ligament knee injuries are an uncommon traumatic injury with little guidance available in the literature for conservative management and prognosis for return to sport. The purpose of this case report is to describe the clinical decision-making in both differential diagnosis and physical therapy management of an isolated grade III lateral collateral ligament sprain in an adolescent multi-sport high school athlete...
August 2016: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/27507843/the-influence-of-meniscal-and-anterolateral-capsular-injury-on-knee-laxity-in-patients-with-anterior-cruciate-ligament-injuries
#18
Volker Musahl, Ata A Rahnemai-Azar, Joanna Costello, Justin W Arner, Freddie H Fu, Yuichi Hoshino, Nicola Lopomo, Kristian Samuelsson, James J Irrgang
BACKGROUND: The role of the anterolateral capsule (ALC) as a secondary restraint to quantitative rotatory laxity of patients with an anterior cruciate ligament (ACL) injury is currently debated. PURPOSE/HYPOTHESIS: The purpose was to determine the influence of concomitant ALC injuries as well as injuries to other soft tissue structures on rotatory knee laxity in patients with an ACL injury. It was hypothesized that a concomitant ALC injury would be associated with increased rotatory knee laxity as measured during a quantitative pivot-shift test...
December 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27505954/-clinical-effect-of-staged-repair-and-reconstruction-of-multiple-ligament-injuries-in-knee-joints
#19
Zhen Lai, Zhi-xiang Liu, Jun-long Yang, Zhao-fei Zhang, Yi-liang Chang
OBJECTIVE: To evaluate clinical outcomes of anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) reconstruction under arthroscopy combined with limited open repair of medial collateral ligament (MCL) for the treatment of multiple ligament injuries of knee joints. METHODS: From March 2006 and June 2012,the data of 14 patients (14 knees) with multiple injuries of ACL, PCL, and MCL were collected. There were 8 males and 6 females with an average age of (31...
May 2016: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/27502228/posterior-ankle-and-hindfoot-endoscopy-a-cadaveric-study
#20
T H Lui, L K Chan
BACKGROUND: The list of indications of posterior ankle endoscopy is expanding and includes various soft tissue and bony pathologies of the posterior ankle. Some of the indications, e.g. release of frozen ankle, debridement of posteromedial soft tissue impingement of the ankle and debridement or fixation of the posteromedial osteochondral lesion of the talus, require approach to the posterior ankle medial to the flexor hallucis longus tendon. The purpose of this study was to assess the risk of injury to the posterior tibial neurovascular bundle during posterior ankle endoscopy...
September 2016: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
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