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Journal of Knee Surgery

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https://www.readbyqxmd.com/read/28399605/cementless-total-knee-arthroplasty-in-patients-older-than-75-years
#1
Jared M Newman, Anton Khlopas, Morad Chughtai, Chukwuweike U Gwam, Jaydev B Mistry, George A Yakubek, Steven F Harwin, Michael A Mont
Some surgeons have been hesitant to use cementless fixation for total knee arthroplasty (TKA) in elderly patients due to concerns regarding successful bone biological fixation. Therefore, this study evaluated: (1) implant survivorship, (2) functional outcomes, (3) radiographic outcomes, and (4) complications in patients over 75 years of age who underwent cementless total knee arthroplasty. A total of 134 patients (142 TKAs) older than 75 years at a single institution between June 2008 and June 2014 were retrospectively reviewed...
April 11, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28395370/intra-articular-tranexamic-acid-in-primary-total-knee-arthroplasty-meta-analysis
#2
Joseph T Moskal, Susan G Capps
Total knee arthroplasty (TKA) is associated with an increased need for blood transfusions and thus an increase in risks associated with blood transfusion such as transfusion reactions, infections, fluid overload, and altered mental status. Tranexamic acid (TXA) is an antifibrinolytic medication that can reduce perioperative blood loss in TKA. However, the best method of delivery has not been defined although topical intra-articular TXA (IA-TXA) may have a theoretical advantage as it is applied directly when and where it is needed to control bleeding...
April 10, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28355682/efficacy-of-tranexamic-acid-for-hemostasis-in-patients-undergoing-high-tibial-osteotomy
#3
Dong Won Suh, Bong Soo Kyung, Seung-Beom Han, Kuhoang Cheong, Won Hee Lee
Extensive bone bleeding and an uncomfortable hematoma can develop due to the opening gap and space during a medial open high tibial osteotomy (HTO). Tranexamic acid (TXA) has been used in various orthopaedic surgeries to reduce bleeding and wound complications. However, no study has investigated the effect of TXA during HTO. Therefore, the purpose of this study is to evaluate the efficacy of TXA in reducing postoperative blood loss in patients undergoing HTO. The hypothesis is that topical TXA administration will reduce postoperative bleeding in patients undergoing medial opening HTO...
March 29, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28355681/a-biomechanical-study-of-two-distinct-methods-of-anterior-cruciate-ligament-rupture-and-a-novel-surgical-reconstruction-technique-in-a-small-animal-model-of-posttraumatic-osteoarthritis
#4
Austin J Ramme, Matin S Lendhey, Eric J Strauss, Oran D Kennedy
Small animal models are critical for studies of sports-related knee injury and disease such as posttraumatic osteoarthritis (PTOA) following anterior cruciate ligament (ACL) rupture. In such models, ACL damage can be achieved by surgical transection or, using a more recent innovation, by noninvasive biomechanical means. Whether these approaches differentially alter normal mechanics is unknown. Furthermore, while surgical reconstruction of ruptured ACL can greatly improve joint stability, its effect on PTOA development is also unclear...
March 29, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28355680/function-of-the-anterior-intermeniscal-ligament
#5
Trent M Guess, Swithin S Razu, Keiichi Kuroki, James L Cook
The function and importance of the anterior intermeniscal ligament (AIML) of the knee are not fully known. The purpose of this study was to evaluate the biomechanical and sensorimotor function of the AIML. Computational analysis was used to assess AIML and tibiomeniscofemoral biomechanics under combined translational and rotational loading applied during dynamic knee flexion-extension. Histologic and immunohistochemical examination was used to identify and characterize neural elements in the tissue. The computational models were created from anatomy and passive motion of two female subjects and histologic examinations were conducted on AIMLs retrieved from 10 fresh-frozen cadaveric knees...
March 29, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28355679/a-simple-technique-to-prevent-early-or-late-endobutton-deployment-in-anterior-cruciate-ligament-reconstructions-a-technical-note
#6
Fabricio Fogagnolo, Rodrigo Salim, Mauricio Kfuri Junior
The use of suspensory graft fixation methods in arthroscopic reconstruction of the anterior cruciate ligament has become increasingly popular with the more frequent use of tendon grafts and anatomical techniques involving the creation of bone tunnels. An important technical step to ensure adequate fixation of the graft when using EndoButton-type implants, particularly in the femur, involves flipping the EndoButton plate at the correct length to avoid performing this maneuver before the appropriate time or leaving soft tissue between the plate and lateral cortex of the femur...
March 29, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28293922/highly-variable-femoral-morphology-in-osteoarthritic-chinese-are-prostheses-today-sufficiently-suitable
#7
Yunjie Zhang, Xiaofeng Wang, Zongming Wu, Qing Xia, Yunchao Shao
Background We aimed to retrospectively investigate the morphology of the resected surfaces of femurs in Chinese patients who underwent total knee arthroplasty (TKA) and to assess the suitability of contemporary femoral components. Methods Measurements on three-dimensional reconstruction after virtual bone cutting were performed on 142 knees from Chinese TKA candidates. The anteroposterior (AP) and mediolateral (ML) dimensions, aspect ratio (ML/AP), and posterior condylar angle (PCA) were measured in the axial plane; the height and length of medial and lateral anterior condyles and the maximal width of the anterior condyles were measured in the frontal plane...
March 14, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28282674/patellar-height-measurements-on-radiograph-and-magnetic-resonance-imaging-in-patellar-instability-and-control-patients
#8
R Alexander Yue, Elizabeth A Arendt, Marc A Tompkins
Insall-Salvati (IS) ratio, modified IS ratio (mIS), Caton-Deschamps (CD) index, and Blackburne-Peel (BP) index are patellar height measurements commonly made on lateral radiographs (XRs) in patients with patellofemoral instability. More recently, magnetic resonance imaging (MRI) has been used as an additional imaging modality to measure patellar height. However, different imaging modalities have not been previously compared for all of these measurements. First, to compare the patellar height measurements of IS, mIS, CD, and BP on XR and MRI in first-time lateral patellar dislocation (LPD) patients and a control population and, second, to evaluate for the effect of sex and skeletal maturity...
March 10, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28282673/five-strand-versus-four-strand-hamstring-tendon-graft-technique-for-anterior-cruciate-ligament-reconstruction-a-biomechanical-comparison
#9
Eric R Vaillant, Brent G Parks, Lyn M Camire, Richard Y Hinton
The aim of this article is to compare diameter and stiffness, displacement, and strain in a five-strand versus four-strand hamstring graft for anterior cruciate ligament reconstruction. Eight matched pairs of lower extremities underwent four-strand or five-strand hamstring graft reconstruction. Diameter was significantly higher in the five-strand versus the four-strand construct (p = 0.002). No significant difference was found between the groups in construct displacement or stiffness. Significantly higher strain was observed in the inner limb versus the outer limb in the four-strand construct (p = 0...
March 10, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28282672/all-arthroscopic-autologous-matrix-induced-chondrogenesis-aided-repair-of-a-patellar-cartilage-defect-using-dry-arthroscopy-and-a-retraction-system
#10
Boguslaw Sadlik, Mariusz Puszkarz, Lidia Kosmalska, Martin Wiewiorski
The technique of all-arthroscopic autologous matrix-induced chondrogenesis (AMIC)-aided repair of patellar cartilage lesions using a retraction system and dry arthroscopy has been recently described. We report the first clinical and radiological data at a short-term follow-up. Twelve patients underwent AMIC-aided cartilage repair for a patellar lesion. All steps of the procedure were performed arthroscopically, which include the use of an intra-articularly placed retraction plate for distraction of the patellofemoral joint and evacuation of saline solution for collagen matrix insertion and fixation...
March 10, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28282671/pedobarographic-analysis-in-total-knee-arthroplasty
#11
Melih Güven, Onur Kocadal, Budak Akman, Uğur Şayli, Faik Altıntaş
Pedobarographic gait analysis is a useful tool for the determination of loading distributions and alterations on the lower extremity and their reflection on the foot sole after many orthopaedic surgical applications. To date, there have been no studies evaluating the relationship between component alignment and changes of pedobarographic gait analysis in total knee arthroplasty (TKA). We aimed to investigate the effects of TKA and prosthetic alignment on the distribution of pedobarographic parameters. Quantitative gait patterns of 47 patients were prospectively evaluated by using pedobarography 1 week before surgery and at the seventh month, on average, postoperatively...
March 10, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28282670/the-transseptal-arthroscopic-knee-portal-is-in-close-proximity-to-the-popliteal-artery-a-cadaveric-study
#12
Jourdan M Cancienne, Brian C Werner, M Tyrrell Burrus, Abdurrahman Kandil, Evan J Conte, Frank W Gwathmey, Mark D Miller
The purpose of this study was to use fluoroscopy to measure the distance between the transseptal portal and the popliteal artery under arthroscopic conditions with an intact posterior knee capsule, and to determine the difference between 90 degrees of knee flexion and full extension. The popliteal artery of eight fresh-frozen cadaveric knees was dissected and cannulated proximal to the knee joint. The posterolateral, posteromedial, and transseptal portals were then established at 90 degrees of flexion. A 4-mm switching stick was placed through the transseptal portal, and barium contrast was injected into the popliteal artery...
March 10, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28282669/comparison-of-anterior-cruciate-ligament-graft-isometry-between-paired-femoral-and-tibial-tunnels
#13
E Lyle Cain, Marcus D Biggers, David P Beason, Benton A Emblom, Jeffrey R Dugas
Accurate tunnel placement is important for a successful anterior cruciate ligament (ACL) reconstruction. Controversy exists concerning the preferred method of femoral tunnel preparation, with proponents of both medial portal and transtibial drilling techniques. Current ACL literature suggests that placement of the femoral ACL attachment site posterior or "low" in the ACL footprint leads to more anatomically correct ACL mechanics and better rotational control. There is limited literature focusing on ACL graft displacement through knee range of motion based on specific paired placement of femoral and tibial tunnels...
March 10, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28278525/erratum-the-relationship-between-body-mass-index-and-risk-of-failure-following-meniscus-repair
#14
Mark F Sommerfeldt, Robert A Magnussen, Kyle L Randall, Marc Tompkins, Bryan Perkins, Avijit Sharma, Ryan Blackwell, David C Flanigan
No abstract text is available yet for this article.
March 9, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28249349/revision-of-total-knee-arthroplasties-performed-in-young-active-patients-with-posttraumatic-and-osteoarthritis
#15
Andrew Brian Old, William John Long, W Norman Scott
Rates of total knee arthroplasty (TKA) in younger patients are rising significantly. A recent study performed at our institute illustrated the excellent survivorship of TKAs in patients younger than 55 years at a mean follow-up period of 25 years. This study reports on the 25 knees in this series that required revision surgery. Twenty-five revisions were performed in 24 patients. Indication for revision, clinical outcomes, and radiographs were reviewed at their most recent follow-up. Revisions were performed in 5 cases of infection, 2 cases of fracture/trauma, 17 cases of wear/loosening, and 1 case of instability...
March 1, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28249348/methicillin-resistant-staphylococcus-aureus-infection-is-a-risk-factor-for-unplanned-return-to-the-operating-room-in-the-surgical-treatment-of-a-septic-knee
#16
David Jaffe, Timothy Costales, Patrick Greenwell, Matthew Christian, Iii Ralph Frank Henn
Surgical irrigation and debridement is the mainstay of treatment after the diagnosis of a septic knee. Arthroscopic treatment has been validated as a treatment option, but there is limited literature comparing it to an open arthrotomy regarding risk factors for failing single-stage surgical treatment. A retrospective review of surgically treated native adult septic knees at one urban tertiary care center was conducted to evaluate rates of unplanned return to the operating room (OR) following both arthroscopic and open treatment of an adult septic knee...
March 1, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28249347/patient-self-assessed-passive-range-of-motion-of-the-knee-cannot-replace-health-professional-measurements
#17
Jens Borgbjerg, Frank Madsen, Anders Odgaard
The purpose of this study was to investigate whether patients can accurately self-assess their knee passive range of motion (PROM). A picture-based questionnaire for patient self-assessment of knee PROM was developed and posted to patients. The self-assessed PROM from 58 patients was compared with surgeon-assessed PROM using a short-arm goniometer. Agreement between the measurement methods was calculated with the Bland-Altman method. We calculated the sensitivity and specificity of patient-assessed PROM in dichotomously detecting knee motion impairment in both flexion (≤ 100 degrees) and extension (≥ 10-degree flexion contracture)...
March 1, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28235234/should-we-resect-hoffa-s-fat-pad-during-total-knee-replacement
#18
Hannah Sellars, Alun Yewlett, Ryan Trickett, Mark Forster, Adel Ghandour
Resection of Hoffa's fat pad during total knee arthroplasty is sometimes performed to improve access and view. Opponents of this technique argue that sacrificing the fat pad potentially compromises blood supply to the patellar tendon and it can subsequently shorten. Our objective was to identify any difference in the Insall-Salvati ratio of knees undergoing total knee arthroplasty between a cohort that had Hoffa's fat pad preserved and the one that had Hoffa's fat pad completely excised. The total knee arthroplasties by two surgeons at our institution were reviewed over a 3-year period...
February 24, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28235233/erratum-the-use-of-biologic-agents-in-athletes-with-knee-injuries
#19
Michaela Kopka, James P Bradley
No abstract text is available yet for this article.
February 24, 2017: Journal of Knee Surgery
https://www.readbyqxmd.com/read/28219090/quality-of-life-outcomes-of-patients-following-patellofemoral-stabilization-surgery-the-influence-of-trochlear-dysplasia
#20
Laurie Anne Hiemstra, Sarah Kerslake, Mark R Lafave
Trochlear dysplasia is a well-described risk factor for recurrent patellofemoral instability. Despite its clear association with the incidence of patellofemoral instability, it is unclear whether the presence of high-grade trochlear dysplasia influences clinical outcome after patellofemoral stabilization. The purpose of this study was to assess whether trochlear dysplasia influenced patient-reported, disease-specific outcomes in surgically treated patellar instability patients, when risk factors were addressed in accordance with the à la carte surgical approach to the treatment of patellofemoral instability...
February 20, 2017: Journal of Knee Surgery
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