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https://www.readbyqxmd.com/read/28499093/the-segond-fracture-is-an-avulsion-of-the-anterolateral-complex
#1
Humza Shaikh, Elmar Herbst, Ata Amir Rahnemai-Azar, Marcio Bottene Villa Albers, Jan-Hendrik Naendrup, Volker Musahl, James J Irrgang, Freddie H Fu
BACKGROUND: The Segond fracture was classically described as an avulsion fracture of the anterolateral capsule of the knee. Recently, some authors have attributed its pathogenesis to the "anterolateral ligament" (ALL). Biomechanical studies that have attempted to reproduce this fracture in vitro have reported conflicting findings. PURPOSE: To determine the anatomic characteristics of the Segond fracture on plain radiographs and magnetic resonance imaging (MRI), to compare this location with the location of the ALL described in prior radiographic and anatomic publications, and to determine the fracture's attachments to the soft tissue anterolateral structures of the knee...
May 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28479051/asymmetry-in-gait-pattern-following-bicondylar-tibial-plateau-fractures-a-prospective-one-year-cohort-study
#2
Rasmus Elsoe, Peter Larsen
INTRODUCTION: Despite the high number of studies evaluating outcomes following tibial plateau fractures, the literature lacks studies including the objective assessment of gait pattern. The purpose of the present study was to evaluate asymmetry in gait patterns at 12 months after frame removal following ring fixation of a tibial plateau fracture. PATIENTS AND METHODS: The study design was a prospective cohort study. The primary outcome measurement was the gait patterns 12 months after frame removal measured with a pressure-sensitive mat...
April 27, 2017: Injury
https://www.readbyqxmd.com/read/28471817/effects-of-tibial-rotational-guided-growth-on-the-geometries-of-tibial-plateaus-and-menisci-in-rabbits
#3
Figen Sevil-Kilimci, Mutlu Cobanoglu, Mehmet K Ocal, Deniz Korkmaz, Emre Cullu
BACKGROUND: There are studies on the use of oblique plate over epiphyses for rotational deformities but the effects of this method on bone are not yet known. The purpose of this study was to determine the effect and rebound effect of rotational-guided growth on the geometries of the tibial plateaus and menisci in a rabbit model of tibial axial rotation. METHODS: Thirty male rabbits were 6 weeks old when medial and lateral plates were applied to the proximal tibias of the left side...
May 3, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28460415/articular-cartilage-surface-roughness-as-an-imaging-based-morphological-indicator-of-osteoarthritis-a-preliminary-investigation-of-osteoarthritis-initiative-subjects
#4
Michael D Newton, Jeffrey Osborne, Karisssa Gawronski, Kevin C Baker, Tristan Maerz
Current imaging-based morphometric indicators of osteoarthritis (OA) using whole-compartment mean cartilage thickness (MCT) and volume changes can be insensitive to mild degenerative changes of articular cartilage (AC) due to areas of adjacent thickening and thinning. The purpose of this preliminary study was to evaluate cartilage thickness-based surface roughness as a morphometric indicator of OA. 3D magnetic resonance imaging (MRI) datasets were collected from osteoarthritis initiative (OAI) subjects with Kellgren-Lawrence (KL) OA grades of 0, 2, and 4 (n = 10/group)...
April 29, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/28456927/associations-of-three-dimensional-t1-rho-mr-mapping-and-three-dimensional-t2-mapping-with-macroscopic-and-histologic-grading-as-a-biomarker-for-early-articular-degeneration-of-knee-cartilage
#5
T Sasho, J Katsuragi, S Yamaguchi, H Haneishi, T Aizimu, T Tanaka, A Watanabe, Y Sato, R Akagi, K Matsumoto, T Uno, K Motoori
T1 rho and T2 mapping are magnetic resonance imaging (MRI) techniques to detect early degenerative changes in cartilage. Recent advancements have enabled 3D acquisition for both techniques. The objective of the present study was to examine the correlation of 3D T1 rho and 3D T2 mapping with macroscopic and histological characteristics of knee cartilage. Twenty-one patients who underwent total knee arthroplasty due to osteoarthritis with involvement of the medial compartment but with minimum involvement of the lateral compartment were enrolled...
April 29, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28451863/variations-in-knee-kinematics-after-acl-injury-and-after-reconstruction-are-correlated-with-bone-shape-differences
#6
Drew A Lansdown, Valentina Pedoia, Musa Zaid, Keiko Amano, Richard B Souza, Xiaojuan Li, C Benjamin Ma
BACKGROUND: The factors that contribute to the abnormal knee kinematics after anterior cruciate ligament (ACL) injury and ACL reconstruction remain unclear. Bone shape has been implicated in the development of hip and knee osteoarthritis, although there is little knowledge about the effects of bone shape on knee kinematics after ACL injury and after ACL reconstruction. QUESTIONS/QUESTIONS: (1) What is the relationship between bony morphology with alterations in knee kinematics after ACL injury? (2) Are baseline bone shape features related to abnormal knee kinematics at 12 months after ACL reconstruction? METHODS: Thirty-eight patients (29 ± 8 years, 21 men) were prospectively followed after acute ACL injury and before ligamentous reconstruction...
April 27, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28435556/anterior-knee-pain-after-tibial-intra-medullary-nailing-is-it-predictable
#7
P C Soraganvi, B S Anand-Kumar, R Rajagopalakrishnan, B A Praveen-Kumar
Introduction: Intramedullary nailing has been used frequently for the treatment of tibial diaphyseal fractures. Chronic anterior knee pain has been considered the most frequent post-operative complication of this technique. We investigated the relationship between anterior knee pain and position of nail tip in proximal tibia. Methods: 103 patients were selected among patients who underwent interlocking nailing in our institution. Patients with other factors that might cause anterior knee pain were excluded...
July 2016: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28409100/arthroscopic-technique-for-treatment-of-schatzker-type-iii-tibia-plateau-fractures-without-fluoroscopy
#8
Afsar T Ozkut, Oguz S Poyanli, Ersin Ercin, Kaya Akan, Irfan Esenkaya
Accurate reduction and maintenance of the stability with correct implant positioning is critical for surgical treatment of tibial plateau fractures. Our technique includes an arthroscopic reduction and fixation of Schatzker type III tibial plateau fractures with a bulls-eye screw placement without fluoroscopy control. With the arthroscopic guidance, an anterior cruciate ligament drill guide is placed and a K-wire sent to the midpoint of the depressed fragment through the guide at a 40° angle to the coronal axis of the tibia...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28382920/surgical-treatment-of-a-proximal-diaphyseal-tibial-deformity-associated-with-partial-caudal-and-cranial-cruciate-ligament-deficiency-and-patella-baja
#9
S Vincenti, S Knell, A Pozzi
Caudal cruciate ligament injury can be a complication following tibial plateau leveling osteotomy (TPLO) (Slocum und Slocum, 1993) especially if the post-operative Tibial Plateau Angle (TPA) is less than 5 degree. We describe a case of negative TPA associated with partial cranial and caudal ligament rupture treated with a center of rotation of angulation (CORA) based cranial tibial opening wedge osteotomy and tibial tuberosity transposition. A 13 kg, mixed breed dog was presented for right pelvic limb lameness...
April 2017: Schweizer Archiv Für Tierheilkunde
https://www.readbyqxmd.com/read/28365167/outcomes-of-the-ilizarov-frame-use-in-elderly-patients
#10
Efthymios Iliopoulos, Natasha Morrissey, Seok Cho, Arshad Khaleel
AIM: The use of circular frame is widely accepted. This is an outcome review on use of circular Ilizarov frame in elderly patients. MATERIALS & METHODS: Data from all patients treated with an Ilizarov circular frame between January 2002 and December 2014, who were 65 years of age or over at surgery was collected. Seventy Ilizarov circular frames were applied during this period in our unit at a mean age of 71.2 years. Clinical, radiological and quality of life questionnaire (SF-12) data were gathered...
March 30, 2017: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/28331933/conformation-of-the-proximal-tibia-and-cranial-cruciate-ligament-disease-in-small-breed-dogs
#11
Jan Janovec, Michal Kyllar, Duncan Midgley, Martin Owen
OBJECTIVES: To investigate the conformation of the proximal tibia in small breed dogs with and without cranial cruciate ligament disease (CCLD) and to identify morphologic abnormalities that may predispose to development of CCLD. METHODS: Mediolateral radiographs of the entire tibia of dogs <15 kg with surgically confirmed CCLD were retrospectively evaluated. Proximal tibial width (PTW), tibial plateau length (TPL), tibial plateau angle as described by Slocum and Slocum (sTPA), proximal tibial tuberosity angle (PTTA), tibial plateau angle as described by Inauen and colleagues (nTPA), and diaphyseal tibial width (DTW) were measured...
March 23, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28326407/instability-of-the-proximal-tibiofibular-joint-associated-with-total-knee-arthroplasty
#12
Martin Bédard, Simon Corriveau-Durand
To our knowledge, proximal tibiofibular joint instability has never been reported in a patient with a total knee arthroplasty (TKA). We present the case of a patient with anterolateral proximal tibiofibular joint instability associated with a complex primary TKA. In 2010, a male patient of 47 years was referred for TKA after posttraumatic osteoarthritis. The patient's history includes a fracture of the left lateral tibial plateau in 2008 and removal of osteosynthesis material in 2009. TKA with a lateral metal augment and intramedullary stem was performed in 2010...
September 2016: Arthroplasty Today
https://www.readbyqxmd.com/read/28302318/regional-differences-of-tibial-and-femoral-cartilage-in-the-chondrocyte-gene-expression-immunhistochemistry-and-composite-in-different-stages-of-osteoarthritis
#13
A Lahm, D Dabravolski, H Spank, H Merk, J Esser, R Kasch
The function of articular cartilage as an avascular tissue is mainly served by collagen type II and proteoglycan molecules. Within this matrix homeostasis between production and breakdown of the matrix is exceptionally sensitive. The current study was conducted to identify regional differences in specific alterations in cartilage composition during the osteoarthritic process of the human knee joint. Therefor the changes in the expression of the key molecules of the extracellular matrix were measured in dependence of the anatomical side (femoral vs tibial) and associated with immunohistochemistry and quantitative measurement...
April 2017: Tissue & Cell
https://www.readbyqxmd.com/read/28289103/bone-structural-changes-after-gastric-bypass-surgery-evaluated-by-hr-pqct-a-two-year-longitudinal-study
#14
Vikram V Shanbhogue, René Klinkby Støving, Katrine Hartmund Frederiksen, Stine Hanson, Kim Brixen, Jeppe Gram, Niklas Rye Jørgensen, Stinus Hansen
OBJECTIVE, DESIGN AND METHODS: Roux-en-Y gastric bypass (RYGB) has proved successful in attaining sustained weight loss but may lead to metabolic bone disease. To assess impact on bone mass and structure, we measured a real bone mineral density at the hip and spine by dual-energy X-ray absorptiometry, and volumetric BMD (vBMD) and bone microarchitecture at the distal radius and tibia by high-resolution peripheral quantitative CT in 25 morbidly obese subjects (15 females, 10 males) at 0, 12 and 24 months after RYGB...
June 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28260200/increased-lateral-tibial-posterior-slope-is-related-to-tibial-tunnel-widening-after-primary-acl-reconstruction
#15
Soheil Sabzevari, Amir Ata Rahnemai-Azar, Humza S Shaikh, Justin W Arner, James J Irrgang, Freddie H Fu
PURPOSE: The purpose of the study was to determine the influence of femoral and tibial bone morphology on the amount of femoral and tibial tunnel widening after primary anatomic ACL reconstruction. It was hypothesized that tibial and femoral bone morphology would be significantly correlated with tunnel widening after anatomic ACL reconstruction. METHODS: Forty-nine consecutive patients (mean age 21.8 ± 8.1 years) who underwent primary single-bundle anatomic ACL reconstruction with hamstring autograft were enrolled...
March 4, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28255659/an-intact-fibula-may-contribute-to-allow-early-weight-bearing-in-surgically-treated-tibial-plateau-fractures
#16
Ion Carrera, Pablo Eduardo Gelber, Gaetan Chary, Mireia Gomez Masdeu, Miguel A González Ballester, Juan Carlos Monllau, Jerome Noailly
PURPOSE: The role of the proximal tibiofibular joint (PTFJ) in tibial plateau fractures is unknown. The purpose of this study was to assess, with finite-element (FE) calculations, differences in interfragmentary movement (IFM) in a split fracture of lateral tibial plateau, with and without intact fibula. It was hypothesized that an intact fibula could positively contribute to the mechanical stabilization of surgically reduced lateral tibial plateau fractures. METHODS: A split fracture of the lateral tibial plateau was recreated in an FE model of a human tibia...
March 3, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28216311/meniscal-extrusion-and-bone-marrow-lesions-are-associated-with-incident-and-progressive-knee-osteoarthritis
#17
A J Teichtahl, F M Cicuttini, F Abram, Y Wang, J-P Pelletier, P Dodin, J Martel-Pelletier
OBJECTIVE: Whether meniscal extrusion and bone marrow lesions (BMLs) are independently associated with the risk of knee osteoarthritis (OA) is unknown. METHODS: Data was extracted from the Osteoarthritis Initiative (OAI) cohort. Participants were grouped according to the absence (Kellgren-Lawrence (KL) grade ≤ 1, n = 2120) or presence (KL ≥ 2, n = 2249) of radiographic OA (ROA). Baseline meniscal extrusion and tibial BMLs were assessed. Tibial plateau cartilage volume was assessed at baseline and 72 months, while radiographic disease was assessed at baseline and 48 months...
February 13, 2017: Osteoarthritis and Cartilage
https://www.readbyqxmd.com/read/28213847/ultra-short-stem-anchorage-in-the-proximal-tibial-epiphysis-after-intercalary-tumor-resections-analysis-of-reconstruction-survival-in-four-patients-at-a-mean-follow-up-of-56-months
#18
W K Guder, J Hardes, G Gosheger, M Nottrott, A Streitbürger
INTRODUCTION: Tumors localized in the proximal tibial meta-diaphysis often lead to osteoarticular resections. MATERIALS AND METHODS: In this study, we retrospectively reviewed four patients who underwent intercalary tumor resection and reconstruction using an ultra-short stem in the proximal tibial epiphysis, a procedure that to our knowledge has not been reported in literature so far. RESULTS: At the time of operation, the mean patient age was 26...
February 17, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28197696/large-meniscus-extrusion-ratio-is-a-poor-prognostic-factor-of-conservative-treatment-for-medial-meniscus-posterior-root-tear
#19
Yoon-Ho Kwak, Sahnghoon Lee, Myung Chul Lee, Hyuk-Soo Han
PURPOSE: The purpose of this study was to find a prognostic factor of medial meniscus posterior root tear (MMPRT) for surgical decision making. METHODS: Eighty-eight patients who were diagnosed as acute or subacute MMPRT without severe degeneration of the meniscus were treated conservatively for 3 months. Fifty-seven patients with MMPRT showed good response to conservative treatment (group 1), while the remaining 31 patients who failed to conservative treatment (group 2) received arthroscopic meniscus repair...
February 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28193138/removal-of-interlocking-intramedullary-nail-for-relieve-of-knee-pain-after-tibial-fracture-repair
#20
Shaodong Zhang, Xiaotao Wu, Lei Liu, Chen Wang
OBJECTIVE: To investigate the effects of intramedullary nail removal after tibial fracture repair. METHODS: Sixty patients at our hospital were enrolled in a prospective study and divided into moderate/severe knee pain (visual analog scale (VAS) ≥ 4) and mild/no knee pain (VAS < 4) groups after interlocking intramedullary nailing. Variables studied included the distance from the tip of the nail to the tibial plateau and the front of the tibia on a normalized lateral X-ray, the VAS score of knee and ankle pain, the range of motion of the knee and ankle, and Johner-Wruhs criteria before, 6 weeks after operation, and at the last follow-up...
January 2017: Journal of Orthopaedic Surgery
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