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Posterior tibial

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https://www.readbyqxmd.com/read/27915133/novel-reconstruction-technique-for-an-isolated-plantar-calcaneonavicular-spring-ligament-tear-a-5-case-series-report
#1
Ezequiel Palmanovich, Shay Shabat, Yaron S Brin, Sabri Massrawe, Iftach Hestroni, Meir Nyska
BACKGROUND: It is usually accepted that acquired flatfoot deformity after injury is usually due to partial or complete tear of the posterior tibial tendon (PTT), with secondary failure of the other structures which maintain the medial longitudinal arch, such as the plantar calcaneo-navicular (SPRING) ligament. It is unusual to find an isolated Spring Ligament (SL) tear, with an intact TP tendon. METHODS: The medial arch reconstruction technique of an isolated SL tear in 5 patients is presented discussed in this paper...
November 18, 2016: Foot
https://www.readbyqxmd.com/read/27909681/double-bundle-all-inside-posterior-cruciate-ligament-reconstruction-a-technique-using-2%C3%A2-separate-autologous-grafts
#2
Roy A G Hoogeslag, Bart W Oudelaar, Rianne Huis In't Veld, Reinoud W Brouwer
In a double-bundle posterior cruciate ligament reconstruction, several surgical techniques are available. Compared with other techniques, the advantages of the all-inside technique and cortical suspension devices with variable loop length are that shorter grafts can be used, tendons can be quadrupled, and a double-bundle posterior cruciate ligament reconstruction can be performed with autologous grafts. Furthermore, the all-inside technique provides independent outside-in socket reaming and is soft tissue, cortex, and bone sparing because no full diameter tunnels but sockets are created with a small diameter guide pin, which can transform into a retrograde drill...
October 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27904715/computer-assisted-navigation-in-high-tibial-osteotomy
#3
REVIEW
Sang Jun Song, Dae Kyung Bae
Computer-assisted navigation is used to improve the accuracy and precision of correction angles during high tibial osteotomy. Most studies have reported that this technique reduces the outliers of coronal alignment and unintended changes in the tibial posterior slope angle. However, more sophisticated studies are necessary to determine whether the technique will improve the clinical results and long-term survival rates. Knowledge of the navigation technology, surgical techniques and potential pitfalls, the clinical results of previous studies, and understanding of the advantages and limitations of the computer-assisted navigation are crucial to successful application of this new technique in high tibial osteotomy...
December 2016: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/27904222/functional-and-computed-tomography-correlation-of-femoral-and-tibial-tunnels-in-single-bundle-anterior-cruciate-ligament-reconstruction-use-of-accessory-anteromedial-portal
#4
Naveen Joseph Mathai, Rajkumar S Amaravathi, K V Pavan, Padmanabhan Sekaran, Gaurav Sharma, Belliappa Codanda
BACKGROUND: An accessory anteromedial portal (AAMP) has been shown to be effective in placing an anatomically ideal femoral tunnel. It is well known that this is due to the independent femoral drilling which is possible with the AAMP. However very little is known regarding the significance of this reconstruction technique in influencing the functional outcomes of anatomic anterior cruciate ligament reconstruction (ACLR). This study documents the influence of tibial and femoral tunnel positions on functional outcomes of anatomic ACLR using the AAMP...
November 2016: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/27904024/cartilage-attachment-morphology-of-the-fetal-cruciate-ligaments-of-the-knee-an-immunohistochemical-study-using-human-fetal-specimens
#5
Masahito Yamamoto, Hiromasa Takada, Takeshi Takayama, Sakura Katsumura, Mayumi Sato, Hiroshi Abe, Gen Murakami, Shin-Ichi Abe
Fetal cruciate ligaments of the knee provide two types of cartilage attachments: to a cartilage fovea or a simple continuation to the perichondrium. To examine a difference in matrix substance between a ligament attachment to the fovea and another attachment to the perichondrium. We histologically observed 12 human fetal femurs in which the posterior (or anterior) cruciate ligament provided a fovea-type (or a perichondrium-type) attachment. Immunohistochemistry of matric substances (aggrecan, versican, tenascin-c) was performed...
2016: Okajimas Folia Anatomica Japonica
https://www.readbyqxmd.com/read/27903346/-effect-of-snow-sports-on-knee-cartilage-maturation-in-children-and-adolescent-with-mri-quantitative-analysis-zhang
#6
B T Zhang, L Liu, J Zheng, Y M Dai, S N Yu, G F Liu, L Liu
Objective: To evaluate the effect of snow sports to the knee cartilage maturation of children and adolescent with quantitative analysis of 3.0 T MRI. Methods: Twenty children and adolescent who underwent snow sports training more than 6 months (11 males and 9 females) were recruited and named with sports group, and twenty children and adolescent who live regularly without any exercise (10 males and 10 females) were recruited as control group from June 2014 to June 2015.Each group was divided into subgroups according to their gender...
November 22, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27900312/posterior-tibial-tendon-displacement-behind-the-tibia-and-its-interposition-in-an-irreducible-isolated-ankle-dislocation-a-case-report-and-literature-review
#7
Alessandro Ortolani, Roberto Bevoni, Alessandro Russo, Maurilio Marcacci, Mauro Girolami
Isolated posteromedial ankle dislocation is a rare condition thanks to the highly congruent anatomical configuration of the ankle mortise, in which the medial and lateral malleoli greatly reduce the rotational movement of the talus, and the strength of the ligaments higher than the malleoli affords protection against fractures. However, other factors, like medial malleolus hypoplasia, laxity of the ligaments, peroneal muscle weakness and previous ankle sprains, could predispose to pure dislocation. In the absence of such factors, only a complex high-energy trauma, with a rotational component, can lead to this event...
July 2016: Joints
https://www.readbyqxmd.com/read/27899355/the-anatomic-centers-of-the-femoral-and-tibial-insertions-of-the-anterior-cruciate-ligament-a-systematic-review-of-imaging-and-cadaveric-studies-reporting-normal-center-locations
#8
Anagha P Parkar, Miraude E A P M Adriaensen, Søren Vindfeld, Eirik Solheim
BACKGROUND: The anterior cruciate ligament (ACL) is regularly reconstructed if knee joint function is impaired. Anatomic graft tunnel placement, often assessed with varying measurement methods, in the femur and tibia is considered important for an optimal clinical outcome. A consensus on the exact location of the femoral and tibial footprint centers is lacking. PURPOSE: To systematically review the literature regarding anatomic centers of the femoral and tibial ACL footprints and assess the mean, median, and percentiles of normal centers...
November 29, 2016: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/27896678/no-clinically-important-difference-in-knee-scores-or-instability-between-transtibial-and-inlay-techniques-for-pcl-reconstruction-a-systematic-review
#9
REVIEW
Young-Soo Shin, Hyun-Jung Kim, Dae-Hee Lee
BACKGROUND: It is unclear whether the biomechanical superiority of the inlay technique over the transtibial technique, arising from avoidance of the killer turn at the graft-tunnel margin of the proximal tibia during posterior cruciate ligament (PCL) reconstruction, leads to better knee scores or greater knee stability. QUESTIONS/PURPOSES: This systematic review was designed to compare Tegner and Lysholm scores, and posterior residual laxity of the knee, between single-bundle PCL reconstruction using transtibial and inlay techniques...
November 28, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27894173/open-wedge-high-tibial-osteotomy-and-combined-arthroscopic-surgery-in-severe-medial-osteoarthritis-and-varus-malalignment-minimum-5-year-results
#10
Moon-Jib Yoo, Yong-Eun Shin
Purpose: To evaluate the radiologic and functional outcomes of medial open wedge high tibial osteotomy (HTO) combined with arthroscopic procedure in patients with medial osteoarthritis. Materials and Methods: From June 1996 to March 2010, 26 patients (32 knees) who underwent medial open wedge osteotomy and arthroscopic operation for medial osteoarthritis were retrospectively reviewed. Measurements included hip-knee-ankle (HKA) angle, femorotibial angle, medial proximal tibial angle, posterior tibial slope angle, and Kellgren-Lawrence grade...
December 1, 2016: Knee Surgery & related Research
https://www.readbyqxmd.com/read/27890319/diachronic-changes-in-size-and-shape-of-human-proximal-tibia-in-central-europe-during-the-latest-1200-years
#11
H Brzobohatá, V Krajíček, Z Horák, P Sedlak, J Velemínská
During the past twelve centuries, the stature of Central European inhabitants has increased significantly with corresponding changes in the size of lower limb bones. The aim of our study was to determine whether these changes have occurred strictly in relation to size or if the shape of skeletal structures has been altered simultaneously. Diachronic size and shape changes in the proximal part of tibia in a Central European population (Czech Republic) were studied using geometric morphometrics (principal components analysis, Hotelling's test, linear discriminant analysis)...
October 13, 2016: Homo: Internationale Zeitschrift Für die Vergleichende Forschung Am Menschen
https://www.readbyqxmd.com/read/27888852/medial-sided-ankle-pain-deltoid-ligament-and-beyond
#12
REVIEW
Julia Crim
Abnormalities of the medial ligaments and posterior tibial tendon can occur because of acute injury or chronic instability or malalignment. Medial ankle injuries may occur because of pronation or supination-external rotation injuries. Deltoid ligament injuries have a significant impact on lateral ankle instability but can be overlooked in patients with lateral ligament injuries. Posterior tibial tendon dysfunction is usually associated with spring ligament or flexor retinaculum injury. Tarsal tunnel syndrome, accessory flexor muscles, and subtalar coalition should be considered as well as ligament and tendon tears in differential diagnosis of chronic medial ankle pain...
February 2017: Magnetic Resonance Imaging Clinics of North America
https://www.readbyqxmd.com/read/27888317/effect-of-tibial-slope-changes-on-femorotibial-contact-kinematics-after-cruciate-retaining-total-knee-arthroplasty
#13
Xi-Qing Pan, A-Qin Peng, Fei Wang, Feng Li, Xi-Zeng Nie, Xi Yang, Gang Ji, Xiao-Meng Wang
PURPOSE: The present study was undertaken to evaluate the effect of tibial slope (TS) changes on the femorotibial articular contact kinematics in subjects undergoing posterior cruciate-retaining total knee arthroplasty (CRTKA). METHODS: Eighteen knees in nine patients with medial osteoarthritis who underwent CRTKA using the same size prosthesis were analysed preoperatively and 2 years after TKA. TS changes were calculated on lateral radiographs taken before and after TKA...
November 25, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27886420/posterior-tibial-tendinopathy-associated-with-matrix-metalloproteinase-13-promoter-genotype-and-haplotype
#14
REVIEW
Francielle Boçon de Araujo Munhoz, José Eduardo Baroneza, Alexandre Godoy-Santos, Túlio Diniz Fernandes, Filipe Polese Branco, Lupe Furtado Alle, Ricardo Lehtonen de Souza, Maria Cristina Leme Godoy Dos Santos
BACKGROUND: Posterior tibial tendon (PTT) is particularly vulnerable and its insufficiency is recognized as the main cause of adult acquired flat foot. Some patients have a predisposition without clinically recognized cause, suggesting that individual characteristics play an important role in tendinopathy. Objective was investigated whether genetic variants in matrix metalloproteinases (MMPs) are associated with PTT dysfunction. METHODS: 100 women who presented PTT dysfunction, with histopathological examination of the tendon and magnetic resonance image (MRI) confirming tendinopathy, while 100 asymptomatic women who present intact PPT at MRI constituted the control group were evaluated for MMP-13 g...
November 25, 2016: Journal of Gene Medicine
https://www.readbyqxmd.com/read/27886399/simulation-of-total-knee-arthroplasty-in-5%C3%A2-or-7%C3%A2-valgus-a-study-of-gap-imbalances-and-changes-in-limb-and-knee-alignments-from-native
#15
Stephanie Gu, Stephen M Howell, Maury L Hull
This study calculated the frequency of occurrence of gap imbalances between medial and lateral compartments at 0° flexion and within a compartment between 0° and 90° flexion, and changes in limb and knee alignment from native after computer simulation of TKA with the knee set 5° or 7° valgus at 0° flexion. TKA was simulated on forty-nine 3D bone models of native limbs. At 0° flexion, the femoral component was set 5° or 7° valgus from the anatomic axis of the femur, and the tibial component was set 0° to the tibial anatomic axis...
November 25, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27880849/loading-patterns-of-the-posterior-cruciate-ligament-in-the-healthy-knee-a-systematic-review
#16
S H Hosseini Nasab, Renate List, Katja Oberhofer, Sandro F Fucentese, Jess G Snedeker, William R Taylor
BACKGROUND: The posterior cruciate ligament (PCL) is the strongest ligament of the knee, serving as one of the major passive stabilizers of the tibio-femoral joint. However, despite a number of experimental and modelling approaches to understand the kinematics and kinetics of the ligament, the normal loading conditions of the PCL and its functional bundles are still controversially discussed. OBJECTIVES: This study aimed to generate science-based evidence for understanding the functional loading of the PCL, including the anterolateral and posteromedial bundles, in the healthy knee joint through systematic review and statistical analysis of the literature...
2016: PloS One
https://www.readbyqxmd.com/read/27876517/clinical-effects-of-single-or-double-tibial-artery-revascularization-in-critical-limb-ischemia-patients-with-tissue-loss
#17
Norihiro Kobayashi, Keisuke Hirano, Masahiro Yamawaki, Motoharu Araki, Hideyuki Takimura, Yasunari Sakamoto, Shinsuke Mori, Yoshiaki Ito
OBJECTIVE: The achievement of single vessel inflow to the wound is an acceptable end point of peripheral vascular intervention for patients with critical limb ischemia (CLI) with tissue loss. However, CLI patients often have multitibial artery lesions. We evaluated the clinical effects of single or double tibial artery revascularization for CLI patients. METHODS: This study was conducted retrospectively in a single center. Between April 2007 and January 2015, we treated 123 CLI patients (137 limbs) who had lesions in both the anterior tibial artery and the posterior tibial artery...
November 19, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27876490/medial-open-wedge-high-tibial-osteotomy-for-varus-malunited-tibial-plateau-fractures
#18
S R Sundararajan, H S Nagaraja, S Rajasekaran
PURPOSE: To analyze radiologic and functional outcomes of varus malunited tibial plateau fractures managed with medial open wedge high tibial osteotomy (MOHTO). METHODS: Eighteen patients with symptomatic varus malunited tibial plateau fractures with less than stage II arthritic changes managed from July 2009 to October 2013 were included. Patients with complex intra-articular step malunions and severe arthritic changes (stage III and IV) were excluded. Initially, diagnostic arthroscopy was performed followed by MOHTO stabilized with locking plate and tricortical autograft (n = 11, 61%) or a Puddu plate and allograft (n = 7, 39%)...
November 19, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27876267/open-wedge-high-tibial-osteotomy-using-three-dimensional-printed-models-experimental-analysis-using-porcine-bone
#19
Jun-Dae Kwun, Hee-June Kim, Jaeyoung Park, Il-Hyung Park, Hee-Soo Kyung
BACKGROUND: The purpose of this study was to evaluate the usefulness of three-dimensional (3D) printed models for open wedge high tibial osteotomy (HTO) in porcine bone. METHODS: Computed tomography (CT) images were obtained from 10 porcine knees and 3D imaging was planned using the 3D-Slicer program. The osteotomy line was drawn from the three centimeters below the medial tibial plateau to the proximal end of the fibular head. Then the osteotomy gap was opened until the mechanical axis line was 62...
November 18, 2016: Knee
https://www.readbyqxmd.com/read/27868076/synovial-c-shaped-tibial-footprint-of-the-anterior-cruciate-ligament
#20
César Janovsky, Camila Cohen Kaleka, Maria Teresa Seixas Alves, Mario Ferretti, Moises Cohen
BACKGROUND: Although numerous anatomic studies about the anterior cruciate ligament (ACL) structure and attachments have been performed, these studies have not reached consensus on the ACL footprint. PURPOSE: To investigate the existing controversy regarding the morphology of the tibial ACL insertion (footprint) and confirm histologically that the tibial ACL footprint is not completely filled with ligament tissue. STUDY DESIGN: Descriptive laboratory study...
November 2016: Orthopaedic Journal of Sports Medicine
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