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https://www.readbyqxmd.com/read/28420082/can-early-rehabilitation-prevent-posttraumatic-osteoarthritis-in-the-patellofemoral-joint-after-anterior-cruciate-ligament-rupture-understanding-the-pathological-features
#1
Nai-Jen Chang, Ming-You Shie, Kuan-Wei Lee, Pei-Hsi Chou, Chih-Chan Lin, Chih-Jou Chu
Knee instability resulting from anterior cruciate ligament (ACL) rupture is a high-risk factor for posttraumatic osteoarthritis (PTOA) in the patellofemoral joint (PFJ). However, whether non-weight-bearing and weight-bearing treatments have chondroprotective effects remains unclear. Twenty-four adult New Zealand White male rabbits were employed in this study. All animals received ACL transection in the right knee and sham surgery in the left knee. The rabbits were randomly assigned to the following groups: (I) In the sedentary (SED) group, the rabbits (n = 6) were simply kept in their cage; (II) In the continuous passive motion (CPM) group, the rabbits (n = 6) performed CPM exercise for 7 days, starting from the first postoperative day; (III) In the active treadmill exercise (TRE) group, the rabbits (n = 6) performed TRE for 2 weeks; (IV) In the CPM + TRE group, the rabbits (n = 6) executed CPM exercise, followed by TRE...
April 14, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28413139/evaluation-of-extensor-mechanism-in-revision-knee-arthroplasty
#2
Vadym Zhamilov, Vasfi Karatosun, Serpil Kalkan, Bayram Unver, Izge Gunal
BACKGROUND: The success of revision total knee arthroplasty depends on adequate exposure that does not produce complications. The purpose of this study was to compare the results of revision total knee arthroplasty between V-Y quadricepsplasty (QP) and quadriceps snip (QS) approaches. METHODS: In the study, 92 knees with follow-up of 12-108 months which were operated by using QP (55) and QS (37) were evaluated retrospectively. Measurements were taken by using universal transparent goniometer, also varus valgus deformities, knee flexion angles, instability, Hospital for Special Surgery and Lower Extremity Functional Scale scores, functional condition of the knee and activity levels of the patients were evaluated cross-sectionally...
March 22, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28409075/bilateral-patella-dislocation-after-total-knee-arthroplasty-a-report-of-two-cases-and-a-review-of-the-literature
#3
Raju Vaishya, Amit Kumar Agarwal, Sagar Panthi, Vipul Vijay, Abhishek Vaish
Patellar instability is a known but catastrophic complication after total knee arthroplasty (TKA). The occurrence of bilateral dislocation of the patella after TKA is exceedingly rare. It may present as anterior knee pain, and diagnosis can easily be made clinically or by plain radiographs. Early diagnosis with surgical realignment and repair of the extensor mechanism can provide good outcomes after this complication.
March 4, 2017: Curēus
https://www.readbyqxmd.com/read/28405740/mri-is-not-reliable-in-diagnosing-of-concomitant-anterolateral-ligament-and-anterior-cruciate-ligament-injuries-of-the-knee
#4
Brian M Devitt, Richard O'Sullivan, Julian A Feller, Nicholas Lash, Tabitha J Porter, Kate E Webster, Timothy S Whitehead
PURPOSE: There has been a renewed interest in the anterolateral structures of the knee, including description of the anterolateral ligament (ALL) as a distinct structure. Recognizing injury to the ALL is challenging, particularly given the subjective nature of physical examination. Consequently, focus has turned to magnetic resonance imaging (MRI) to reach a preoperative diagnosis of this region. The aim of this study was to examine the ability of 3-Tesla (3T) MRI to identify the ALL in ACL-injured patients compared to a matched control group of ACL-intact patients...
April 12, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28401426/high-rates-of-return-to-sports-activities-and-work-after-osteotomies-around-the-knee-a-systematic-review-and-meta-analysis
#5
REVIEW
Alexander Hoorntje, Suzanne Witjes, P Paul F M Kuijer, Koen L M Koenraadt, Rutger C I van Geenen, Joost G Daams, Alan Getgood, Gino M M J Kerkhoffs
BACKGROUND: Knee osteotomies are proven treatment options, especially in younger patients with unicompartmental knee osteoarthritis, for certain cases of chronic knee instability, or as concomitant treatment for meniscal repair or transplantation surgery. Presumably, these patients wish to stay active. Data on whether these patients return to sport (RTS) activities and return to work (RTW) are scarce. OBJECTIVES: Our aim was to systematically review (1) the extent to which patients can RTS and RTW after knee osteotomy and (2) the time to RTS and RTW...
April 11, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28400873/good-early-results-obtained-with-a-guided-motion-implant-for-total-knee-arthroplasty-a-consecutive-case-series
#6
Hagen Hommel, Kai Wilke
BACKGROUND: Previous studies have shown a high incidence of complications with a bi-cruciate stabilized (BCS) guided-motion total knee arthroplasty (TKA) design, which led to recent modifications of the design by the manufacturer. OBJECTIVE: The current study was undertaken to assess whether the use of this TKA system with an extension-first surgical technique is associated with a similar rate of short-term adverse outcome as reported in literature. MATERIAL AND METHODS: This retrospective study enrolled 257 consecutive patients (257 knees) undergoing TKA for osteoarthritis of the knee, with the first 153 receiving cemented Journey BCS I implants and the remaining 104 receiving cemented Journey BCS II implants when these became available...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28400662/early-anterior-cruciate-ligament-reconstruction-can-save-meniscus-without-any-complications
#7
Chang-Ik Hur, Eun-Kyoo Song, Sung-Kyu Kim, Seung-Hun Lee, Jong-Keun Seon
BACKGROUND: Early ACL reconstruction, before retuning to activity eliminates recurrent episodes of instability and thereby decreases chances of meniscal and cartilage injury. However, there are no clear and uniform guidelines regarding the timing of ACL reconstruction or clarity in the definition of early and delayed reconstruction to reduce the complications after reconstruction in the ACL injured knee. The purpose of this study was to compare the clinical outcome, stability, muscle power, and postural control after early and delayed anterior cruciate ligament (ACL) reconstruction...
March 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28397529/controlling-abnormal-joint-movement-inhibits-response-of-osteophyte-formation
#8
Kenji Murata, Takanori Kokubun, Yuri Morishita, Katsuya Onitsuka, Shuhei Fujiwara, Aya Nakajima, Tsutomu Fujino, Kiyomi Takayanagi, Naohiko Kanemura
Objective Osteoarthritis (OA) is induced by accumulated mechanical stress to joints; however, little has been reported regarding the cause among detailed mechanical stress on cartilage degeneration. This study investigated the influence of the control of abnormal joint movement induced by anterior cruciate ligament (ACL) injury in the articular cartilage. Design The animals were divided into 3 experimental groups: CAJM group ( n = 22: controlling abnormal joint movement), ACL-T group ( n = 22: ACL transection or knee anterior instability increased), and INTACT group ( n = 12: no surgery)...
April 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28397456/postoperative-knee-joint-stability-following-anterior-cruciate-ligament-reconstruction-using-the-ligament-advanced-reinforcement-system
#9
Sebastian Krupa, Aleksandra Królikowska, Paweł Reichert
BACKGROUND: One of the goals of the synthetic materials used in knee joint reconstruction of the anterior cruciate ligament (ACL) is to improve the strength and stability of the graft immediately after the reconstruction. One of the synthetic grafts is a non-absorbable synthetic ligament device made of terephthalic polyethylene polyester fibers, the Ligament Advanced Reinforcement System (LARS). OBJECTIVES: The aim of the study was to assess postoperative knee joint stability in patients who had undergone ACL reconstruction using the LARS graft...
July 2016: Polimery W Medycynie
https://www.readbyqxmd.com/read/28396931/does-low-constraint-mobile-bearing-knee-prosthesis-give-satisfactory-results-for-severe-coronal-deformities-a-five-to-twelve-year-follow-up-study
#10
Jaroslaw Czekaj, Camdon Fary, Thierry Gaillard, Sebastien Lustig
PURPOSE: Severe varus and valgus knee deformities traditionally are replaced with constrained implants, with a number of disadvantages. We present our results in this challenging group using a low constraint deep-dish mobile bearing implant design. METHODS: One hundred fifty-four patients (170 arthroplasties) who underwent primary TKA using a deep-dish, mobile bearing posterior-stabilized implant for severe varus (HKA < 170°) or valgus (HKA > 190°) deformity between 2004 and 2009 were evaluated at a mean of 6...
April 11, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28396049/acquired-femoral-flexion-deformity-due-to-physeal-injury-during-medial-patellofemoral-ligament-reconstruction
#11
Gerd Seitlinger, Philipp Moroder, Christian Fink, Guido Wierer
BACKGROUND: Reconstruction of the medial patellofemoral ligament (MPFL) is the most frequent surgical procedure performed in patients with patellar instability. Recently, concerns regarding physeal injury during femoral tunnel placement for anatomical MPFL reconstruction in children have been discussed. METHODS: This is the first case to report partial posterior physeal growth arrest and subsequent flexion deformity of the distal femur after MPFL reconstruction in a skeletally immature patient...
April 7, 2017: Knee
https://www.readbyqxmd.com/read/28393268/the-scientific-rationale-for-lateral-tenodesis-augmentation-of-intra-articular-acl-reconstruction-using-a-modified-lemaire-procedure
#12
Andy Williams, Simon Ball, Jo Stephen, Nathan White, Mary Jones, Andrew Amis
PURPOSE: The purpose of this work was to develop the rationale for adding a lateral extra-articular tenodesis to an ACL reconstruction in a knee with an injury that included both the ACL and anterolateral structures, and to show the early clinical picture. METHODS: The paper includes a review of recent anatomical and biomechanical studies of the anterolateral aspect of the knee. It then provides a detailed description of a modified Lemaire tenodesis technique. A short-term clinical follow-up of a case and control group was performed, with two sequential groups of patients treated by isolated ACL reconstruction, and by combined ACL plus lateral tenodesis...
April 9, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28385038/review-of-mechanical-processing-and-immunologic-factors-associated-with-outcomes-of-fresh-osteochondral-allograft-transplantation-of-the-talus
#13
Chikezie N Okeagu, Erin A Baker, Nicholas A Barreras, Zachary M Vaupel, Paul T Fortin, Kevin C Baker
Osteochondral lesions of the talus (OLTs) are an increasingly implicated cause of ankle pain and instability. Several treatment methods exist with varying clinical outcomes. Due in part to successful osteochondral allografting (OCA) in other joints, such as the knee and shoulder, OCA has gained popularity as a treatment option, especially in the setting of large lesions. The clinical outcomes of talar OCA have been inconsistent relative to the positive results observed in other joints. Current literature regarding OCA failure focuses mainly on 3 factors: the effect of graft storage conditions on chondrocyte viability, graft/lesion size, and operative technique...
April 1, 2017: Foot & Ankle International
https://www.readbyqxmd.com/read/28378234/core-curriculum-case-illustration-stieda-fracture-avulsion-fracture-of-the-medial-femoral-condyle
#14
Shaimaa Abdelhassib Fadl, Jeffrey D Robinson
This is the 30th installment of a series that will highlight one case per publication issue from the bank of cases available online as part of the American Society of Emergency Radiology (ASER) educational resources. Our goal is to generate more interest in and use of our online materials. To view more cases online please visit the ASER Core Curriculum and Recommendations for Study online at: http://www.erad.org/page/CCIP_TOC . A Stieda fracture is an avulsion injury from the medial femoral condyle of the origin of the medial collateral ligament...
April 4, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28373945/technique-for-arthroscopic-assisted-primary-anterior-cruciate-ligament-reconstruction-using-doubled-tibialis-anterior-tendon
#15
Michael Rose, Dennis Crawford
Advances in surgical technique and our knowledge of anterior cruciate ligament (ACL) anatomy have resulted in a marked increase in options for ACL reconstruction. Currently, patient age and activity level, surgeon preference and experience, and cost are factors influencing the type of reconstruction recommended to address knee instability. We present a simplified transtibial method of ACL reconstruction using a single-bundle, doubled tibialis anterior allograft. This method uses fixation with a suspensory device on the femur and a bio-composite interference screw on the tibia...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28373944/the-fascia-lata-anterolateral-tenodesis-technique
#16
Andrea Ferretti, Edoardo Monaco, Mattia Fabbri, Daniele Mazza, Angelo De Carli
A technique for anatomic reconstruction of the anterolateral complex addressing anterolateral rotatory instability both in primary anterior cruciate ligament reconstruction and in revision cases is presented. The extra-articular reconstruction is performed with a pedicle strip of iliotibial tract, fixed on the anatomic origin and insertion points of the anterolateral ligament of the knee in a double-bundle V-shaped fashion.
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28372918/all-polyethylene-tibial-component-use-for-elderly-low-demand-total-knee-arthroplasty-patients
#17
Kenneth A Gustke, Martin K Gelbke
BACKGROUND: Potential advantages combined with lower cost have prompted a renewed interest in modern all-polyethylene tibial designs. METHODS: A total of 317 Natural Knee total knee arthroplasties with an all-polyethylene tibial component that was performed since 1993 were retrospectively reviewed to confirm that cost savings were not associated with inferior clinical results. They were primarily used in elderly, low-demand patients. The average age at the time of surgery was 80...
March 8, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28366313/short-to-midterm-outcomes-of-revision-total-knee-arthroplasty-patients-with-a-total-stabilizer-knee-system
#18
Chukwuweike U Gwam, Morad Chughtai, Anton Khlopas, Nequesha Mohamed, Randa K Elmallah, Arthur L Malkani, Michael A Mont
BACKGROUND: Revision total knee arthroplasty (TKA) can often be challenging. The use of a new revision system may aid in providing better stability, improved function, fit, and implant longevity. Therefore, we assessed: (1) survivorship, (2) clinical outcomes, (3) postoperative complications, and (4) radiographic outcomes of patients who underwent revision TKA using this system. METHODS: Patients from 2 hospitals who underwent revision TKA using a newer generation revision knee system between June 2008 and December 2013 for component instability or aseptic loosening were included...
March 2, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28365070/clinical-outcome-of-primary-medial-collateral-ligament-posteromedial-corner-repair-with-or-without-staged-anterior-cruciate-ligament-reconstruction
#19
Vivek Pandey, Vikrant Khanna, Sandesh Madi, Anshul Tripathi, Kiran Acharya
INTRODUCTION: Medial collateral ligament (MCL) is a prime valgus stabilizer of the knee, and MCL tears are currently managed conservatively. However, posteromedial corner (PMC) injury along with MCL tear is not same as isolated MCL tear and the former is more serious injury and requires operative attention. However, literature is scarce about the management and outcome of PMC-MCL tear alongside anterior cruciate ligament (ACL) tear. The purpose of this study is to report the clinical outcome of primary repair of MCL and PMC with or without staged ACL reconstruction...
March 22, 2017: Injury
https://www.readbyqxmd.com/read/28350716/movement-strategies-among-groups-of-chronic-ankle-instability-coper-and-control
#20
S Jun Son, Hyunsoo Kim, Mattew K Seeley, J Ty Hopkins
INTRODUCTION: Comprehensive evaluation of movement strategies during functional movement is a difficult undertaking. Because of this challenge, studied movements have been over simplified. Furthermore, evaluating movement strategies at only a discrete time point(s) provide limited insight into how movement strategies may change or adapt in chronic ankle instability (CAI) patients. This study aimed to identify abnormal movement strategies in individuals with a history of ankle sprain injury during a sports maneuver compared to healthy controls...
March 27, 2017: Medicine and Science in Sports and Exercise
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