453 results match your criteria portions femoral


High Resolution Micro-Computed Tomography Reveals a Network of Collagen Channels in the Body Region of the Knee Meniscus.

Ann Biomed Eng 2021 Apr 7. Epub 2021 Apr 7.

University of Oxford, Oxford, UK.

The meniscus is an integral part of the human knee, preventing joint degradation by distributing load from the femoral condyles to the tibial plateau. Recent qualitative studies suggested that the meniscus is constituted by an intricate net of collagen channels inside which the fluid flows during loading. The aim of this study is to describe in detail the structure in which this fluid flows by quantifying the orientation and morphology of the collagen channels of the meniscal tissue. Read More

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Patellar Tendon Orientation and Strain Are Predictors of ACL Strain In Vivo During a Single-Leg Jump.

Orthop J Sports Med 2021 Mar 18;9(3):2325967121991054. Epub 2021 Mar 18.

Department of Orthopaedic Surgery, Duke University, Durham, North Carolina, USA.

Background: There is little in vivo data that describe the relationships between patellar tendon orientation, patellar tendon strain, and anterior cruciate ligament (ACL) strain during dynamic activities. Quantifying how the quadriceps load the ACL via the patellar tendon is important for understanding ACL injury mechanisms.

Hypothesis: We hypothesized that flexion angle, patellar tendon orientation, and patellar tendon strain influence ACL strain during a single-leg jump. Read More

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SENSORY INNERVATION OF THE HIP JOINT AND REFERRED PAIN. A Systematic Review of the literature.

Pain Med 2021 Feb 10. Epub 2021 Feb 10.

Anatomy Laboratory, Rangueil University Hospital, Toulouse, France.

Objectives: The aim of this literature review was to establish consensus with respect to the anatomic features of the articular branches innervating the hip joint, and the distribution of sensory receptors within its capsule.

Methods: Five electronic databases were queried, between January 1945 and June 2019. Twenty-one original articles providing a detailed description of sensory receptors about the hip joint capsule (13) and its articular branches (8) were reviewed. Read More

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February 2021

Graphene-Doped Poly (Methyl-Methacrylate) (Pmma) Implants: A Micro-CT and Histomorphometrical Study in Rabbits.

Int J Mol Sci 2021 Feb 1;22(3). Epub 2021 Feb 1.

Department of Innovative Technologies in Medicine & Dentistry, University of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy.

Background-the graphene-doping procedure represents a useful procedure to improve the mechanical, physical and biological response of several Polymethyl methacrylate (PMMA)-derived polymers and biomaterials for dental applications. The aim of this study was to evaluate osseointegration of Graphene doped Poly(methyl methacrylate) (GD-PMMA) compared with PMMA as potential materials for dental implant devices. Methods-eighteen adult New Zealand white male rabbits with a mean weight of approx. Read More

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February 2021

A case of successful ablation of ventricular ectopic focus from the superior tricuspid annulus through the internal jugular vein: a case report.

Eur Heart J Case Rep 2020 Dec 17;4(6):1-5. Epub 2020 Nov 17.

Electrophysiology Department, American Hospital, Iqbol street, 14. Choshtepa, Tashkent region, Uzbekistan.

Background: Symptomatic premature ventricular complexes (PVCs) are a common clinical problem. Although most of ventricular ectopic foci can be easily ablated, some are very challenging and require special manoeuvers. This case report presents an approach to improve electrode stability during ablation. Read More

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December 2020

Arterial branching pattern of the rabbit femoral artery.

Anat Sci Int 2021 Mar 27;96(2):273-285. Epub 2020 Nov 27.

Laboratory of Veterinary Anatomy, Faculty and Institute of Agriculture, Tokyo University of Agriculture and Technology, Fuchu, Tokyo, 183-8509, Japan.

Rabbits have highly developed hindlimb muscles, whereas their bones are fragile, thus resulting in frequent hindlimb fractures. To repair these fractures, it is important to understand the arterial branching pattern of the femoral artery, as it provides the main blood supply to the hindlimb. Since the descriptions from prior studies are insufficient, the aim of the present study was to determine the detailed arterial branching pattern of the rabbit femoral artery. Read More

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Rare association of aortoarteritis and pheochromocytoma: A case report.

Int J Surg Case Rep 2020 20;77:91-95. Epub 2020 Oct 20.

Department of Cardiology, Mohammed VI University Hospital, Faculty of Medicine and Pharmacy, Laboratory of Epidemiology and Public Health, Oujda, Morocco.

Introduction: Pheochromocytoma is an uncommon but treatable cause of secondary hypertension, it may present with a wide variety of manifestations. The coexistence of pheochromocytoma and vascular abnormalities is described but rarely reported entity.

Presentation Of Case: A 36-year-old man was admitted to our hospital for severe hypertension, examination revealed absent femoral pulses with notion of intermittent claudication. Read More

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October 2020

Predictive Factors Associated with Anterolateral Ligament Injury in the Patients with Anterior Cruciate Ligament Tear.

Indian J Orthop 2020 Sep 1;54(5):655-664. Epub 2020 Jun 1.

Department of Orthopedic Surgery, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

Background: The earlier studies did not assess the associated factors of anterolateral ligament injury, comprehensively. We sought to evaluate the independent predictive factors of anterolateral ligament injury in the patients with anterior cruciate ligament tear. Ultrasound scan has an emerging role in the diagnosis of anterolateral ligament injury. Read More

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September 2020

Region-dependent bone loss in the lumbar spine following femoral fracture in mice.

Bone 2020 11 29;140:115555. Epub 2020 Jul 29.

Department of Orthopaedic Surgery, University of California Davis Health, Sacramento, CA, United States of America. Electronic address:

We previously showed that after femur fracture, mice lose bone at distant skeletal sites, including the lumbar vertebrae. This bone loss may increase the risk of subsequent vertebral fractures, particularly if bone is lost from high-strain bone regions, which are most commonly found adjacent to the superior and inferior endplates of the vertebral body. To determine regional bone loss from the lumbar spine following femur fracture, we evaluated the cranial, center, and caudal portions of the L5 vertebral bodies of Young (3 month-old) and Middle-Aged (12 month-old) female C57BL/6 mice two weeks after a transverse femur fractures compared to Young and Middle-Aged uninjured control mice. Read More

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November 2020

How does geometric change after open-wedge high tibial osteotomy affect anterior cruciate ligament status?

Knee 2020 Jun 22;27(3):940-948. Epub 2020 Apr 22.

Department of Orthopaedic Surgery, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Gyeonggi-do, Republic of Korea. Electronic address:

Background: Open-wedge high tibial osteotomy (OWHTO) produces three- dimensional (3D) geometric changes. Among them, increased posterior tibial slope (PTS), and altered coronal inclination that induces unintended tibial translation may affect anterior cruciate ligament (ACL) status. The purpose of current study was to evaluate the geometric changes following OWHTO, such as increasing PTS and decreasing tibial subluxation, which may affect the status of ACL. Read More

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Early degeneration of the meniscus revealed by microbiomechanical alteration in a rabbit anterior cruciate ligament transection model.

J Orthop Translat 2020 Mar 8;21:146-152. Epub 2019 Aug 8.

Department of Orthopaedics, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China.

Background: The microbiomechanical properties of the meniscus influence the cell response to the surrounding biomechanical environment ​and are beneficial to understand meniscus repairing and healing. To date, however, this information remains ambiguous. This study aims to characterise the microbiomechanical properties of the meniscus after degeneration in a rabbit anterior cruciate ligament transection (ACLT) model and to analyse the corresponding histology at the macroscale and chemical composition. Read More

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Finite-Element analysis of a lateral femoro-tibial impact on the total knee arthroplasty.

Comput Methods Programs Biomed 2020 Aug 12;192:105446. Epub 2020 Mar 12.

Department of Mechanical and Aerospace Engineering, West Virginia University, Morgantown, WV 26506, United States.

Background And Objective: Total knee arthroplasty (TKA) is a routine surgery performed to treat patients with severe knee osteoarthritis. The success of a TKA depends strongly on the initial stability of the prosthetic components and its long-term osseointegration due to the optimal distribution of mechanical stresses in the surrounding bones under the effect of the different biomechanical loads applied to the Femur-TKA-Tibia system. The purpose of this study is to analyze the level and the distribution of the induced stresses in a Femur-TKA-Tibia system subjected to combined triaxial forces, which mimic a femoral mechanical shock. Read More

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The International Society for the Study of Vulvovaginal Disease Surgical Oncological Procedure Definitions Committee "Surgical Terminology for Vulvar Cancer Treatment".

J Low Genit Tract Dis 2020 Jan;24(1):62-68

Department of Obstetrics and Gynaecology, University of Torino, Torino, Italy.

Objectives: The International Society for the Study of Vulvovaginal Disease (ISSVD) Surgical Oncological Procedure Definitions Committee propose a consistent terminology based on well-defined and reproducible anatomic landmarks that can be used by all who are involved in care of patients with vulvar conditions.

Materials And Methods: The fundamental principles behind the new terminology contained descriptions of the area extension and depth of the surgical procedure.

Results: Vulvar Surgical Topographic Anatomy LandmarksExtension. Read More

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January 2020

Mechanical characterization of the key portions in locust semi-lunar processes under different strain rates.

J Biomech 2019 Oct 13;95:109314. Epub 2019 Aug 13.

Institute of Biomechanics and Medical Engineering, Department of Engineering Mechanics, Tsinghua University, Beijing 100084, China; State Key Laboratory of Tribology, Tsinghua University, Beijing 100084, China.

The excellent rapid jumping and kicking of locusts are largely attributed to the power amplification mechanisms due to the semi-lunar processes (SLP) at their distal metathoracic femurs, especially dorsal-core (i.e., portion II) and ventral-core parts (i. Read More

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October 2019

Editorial Commentary: Is the Lateral Center-Edge Angle Sufficient for the Approximation of Acetabular Coverage?

Authors:
Benjamin Fritz

Arthroscopy 2019 08;35(8):2346-2348

Balgrist University Hospital and University of Zurich.

The lateral center-edge angle is a robust technique with proven clinical applicability for quantifying acetabular coverage. However, it measures only the lateral coverage of the femoral head without consideration of other important portions of the acetabulum such as the anterior or posterior wall. Three-dimensional acetabular coverage measurement techniques capable of quantifying the entire acetabulum have become available, thus posing the question of whether we should still rely on the lateral center-edge angle for the assessment of acetabular coverage. Read More

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The Far Side Opposite the Surgeon is Most Prone to Contamination From the C-Arm.

J Orthop Trauma 2019 Dec;33(12):e471-e474

Department of Orthopedics and Sports Medicine, University of Kentucky, Lexington, KY.

Objective: Fluoroscopy is used in many orthopaedic procedures. The C-Arm drape is known to be easily contaminated during orthogonal imaging. However, it is unknown if one area of the operative field is more prone to contamination than another. Read More

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December 2019

Evaluation of the anterolateral ligament of the knee by magnetic resonance imaging in patients with chronic anterior cruciate ligament rupture.

J Clin Orthop Trauma 2019 Jul-Aug;10(4):706-709. Epub 2019 Feb 16.

Ankara Numune Training and Research Hospital, Department of Radiology, Ankara, Turkey.

Objective: The purpose of this study was to evaluate the visibility of the anterolateral ligament (ALL) by magnetic resonance imaging (MRI) in patients with chronic anterior cruciate ligament (ACL) rupture.

Materials And Methods: This retrospective case - control study compared 1.5 - T MRI scans for 50 patients with a chronic ACL rupture with those of a control group of 50 patients with an intact ACL. Read More

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February 2019

Different Strategies in Making Transseptal Portal for the Different Purposes.

J Knee Surg 2020 Aug 8;33(8):825-831. Epub 2019 May 8.

Department of Orthopaedic Surgery, Incheon Medical Center, Incheon, Korea.

The purpose of this study was to find the most suitable and safe position of the transseptal portal in anatomic anterior cruciate ligament (ACL) and posterior cruciate ligament (PCL) reconstructions. The hypothesis of this study was that area and position of the transseptal portal are different between ACL and PCL reconstructions for the observation of native footprint. A matched-pair comparison study was conducted on the arthroscopic images of 100 consecutive patients who underwent ACL reconstruction and 50 consecutive patients who underwent PCL reconstruction. Read More

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[Reaction of connective tissue of arterial and venous walls to implantation of synthetic and biological grafts].

Angiol Sosud Khir 2019 ;25(1):46-51

Kursk State Medical University of the RF Ministry of Public Health, Kursk, Russia.

Background: 30% of patients in the remote period appear to develop restenosis of the anastomoses formed during reconstructive-restorative operations on vessels. Two major causes of restenosis have been determined: intimal hyperplasia and smooth muscle cell proliferation. The reaction of connective-tissue elements of vascular walls in response to implantation of grafts remains unstudied. Read More

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The Safe Gluteoplasty: Anatomic Landmarks to Predict the Superior and Inferior Gluteal Veins.

Eplasty 2019 19;19:e8. Epub 2019 Mar 19.

Division of Plastic Surgery, General Surgery Department, University of Louisville, Louisville, Ky.

The increase in demand for gluteal fat grafting seen in recent years in the United States has not been met with an equal gain in knowledge of the perils of this anatomic territory. The purpose of this study was to identify anatomic landmarks that can be readily used by surgeons to identify the takeoff of the superior and inferior gluteal veins. Six fresh cadaveric gluteal specimens were dissected at the University of Louisville anatomy laboratory. Read More

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Developmental Patterns of the Greater Trochanter in Skeletally Immature Patients.

J Pediatr Orthop 2019 Jul;39(6):e412-e416

Rainbow and Babies Hospitals at Case Western Reserve University.

Background: Trochanteric entry femoral nailing in immature patients is controversial. Although it has become increasingly accepted in pediatric patients aged 8 years and older, complications related to physeal violation have been reported. To date, the appropriate minimum age for safe antegrade nailing in skeletally immature patients remains to be unknown. Read More

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Three-dimensional orientation of the femoral curvature. How well does it match with the sagittal curvature of femoral implants?

Orthop Traumatol Surg Res 2019 02 24;105(1):11-16. Epub 2018 Dec 24.

Service de chirurgie orthopédique et traumatologique, CHRU hopitaux de Tours-Trousseau, avenue de la République, 37170 Chambray-lès-Tours, France; Faculté de médecine, université François-Rabelais, 10, boulevard Tonnellé, 37000 Tours, France.

Background: The curvature of the femoral shaft is generally considered as residing in the sagittal plane. While many studies have measured the femur's radius of curvature, very few have studied the orientation of the plane in which it resides. The orientation of this plane may affect the rotation of intramedullary nails or revision stems with diaphyseal locking. Read More

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February 2019

Growth Dynamic of Allogeneic and Autogenous Bone Grafts in a Vertical Model.

Braz Dent J 2018 Jul-Aug;29(4):325-334

Oral Surgery Department, School of Dentistry, USP - Universidade de São Paulo, São Paulo, SP, Brazil.

Several techniques have been proposed for vertical bone regeneration, and many of them use bone autogenous and allogeneic grafts. The purpose of this study was to compare demineralised freeze-dried bone allografts (DFDBA), fresh-frozen (FF) allografts, autogenous bone grafts to find differences between volumetric and histological quantity of bone formation and vertical bone growth dynamic. A vertical tissue regeneration bone model was performed in rabbit calvarias under general anaesthesia. Read More

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Comparison of medial and lateral posterior femoral condyle articular cartilage wear patterns.

Knee 2018 Dec 8;25(6):1165-1170. Epub 2018 Nov 8.

Department of Orthopedics and Sports Medicine, Skagit Regional Clinics, 2320 Freeway Drive, Mount Vernon, WA 98273, USA. Electronic address:

Background: While degenerative changes to the articular cartilage of the anterior and distal portions of the femoral condyles have been well studied in the literature, the changes that occur on the posterior femoral condyle are not as clear. The purpose of this study was to assess the difference in articular cartilage thickness between the medial and lateral posterior femoral condyles in knees undergoing unicompartmental knee arthroplasty.

Methods: A retrospective review of prospectively gathered data on 107 consecutive patients undergoing unicompartmental knee arthroplasty performed by a single surgeon was performed. Read More

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December 2018

[Programa de entrenamiento en reparacion vascular en modelo experimental para residentes de cirugía general].

Cir Cir 2018 ;86(6):481-484

Servicio de Patología. Hospital General de México Dr. Eduardo Liceaga, Ciudad de México, México.

Introducción: Los programas de entrenamiento simulado permiten optimizar recursos, aumentar la práctica técnica y acortar curvas de aprendizaje, y constituyen un método seguro, estandarizado y validado de aprendizaje para todos los entrenados.

Objetivo: Desarrollar un programa de entrenamiento vascular mediante la elaboración de una anastomosis término-terminal de un vaso en un modelo experimental para residentes de cirugía general.

Método: Para el desarrollo de este modelo de entrenamiento se utilizó una extremidad amputada a nivel supracondíleo libre de proceso médico-legal. Read More

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Architecture of the femoral and tibial diaphyses in relation to body mass and composition: Research from whole-body CT scans of adult humans.

Am J Phys Anthropol 2018 12 24;167(4):813-826. Epub 2018 Oct 24.

Laboratory of 3D Imaging and Analytical Methods, Faculty of Natural Sciences, Department of Anthropology and Human Genetics, Charles University, Praha 2, Czech Republic.

Objectives: Recent investigations have evaluated the influence of body composition on long bones in order to overcome the limits of body mass (BM) estimation methods and eventually lead to studying nutrition in past populations. Knowing how fat mass (FM) and fat-free mass (FFM) impact the skeleton would also enhance the understanding of mobility, activity, and locomotion derived from bone architecture. We investigated the relationship between BM and composition, and the architecture of the entire tibial and femoral diaphyses in an adult sample representative of a wide range of variation in age, BM, and composition. Read More

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December 2018

Early Structural Results After Anatomic Triple Bundle Anterior Cruciate Ligament Reconstruction Validated by Tunnel Location, Graft Orientation, and Static Anteroposterior Tibia-Femur Relationship.

Arthroscopy 2018 09 2;34(9):2656-2665. Epub 2018 Aug 2.

Department of Health and Sport Sciences, Medicine for Sports and Performing Arts, Osaka University Graduate School of Medicine, Osaka, Japan.

Purpose: To elucidate how closely the structural characteristics of the anterior cruciate ligament (ACL) grafts after anatomic triple bundle (ATB) reconstruction resembled those of the normal ACL.

Methods: From 2012 to 2016, patients who underwent primary ATB ACL reconstruction using hamstring tendon autografts and the same number of healthy control subjects were included. Using magnetic resonance imaging (MRI) taken at 6 months postoperatively, ACL graft orientation was evaluated by the angles against the tibial plateau measured in the sagittal and oblique coronal planes at the anteromedial and posterolateral portions (ACL-tibial plateau angle [ATA]). Read More

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September 2018

Anatomical Variants of "Short Head of Biceps Femoris Muscle" Associated with Common Peroneal Neuropathy in Korean Populations : An MRI Based Study.

J Korean Neurosurg Soc 2018 Jul 1;61(4):509-515. Epub 2018 Jul 1.

Department of Neurosurgery, Chuncheon Sacred Heart Hospital, College of Medicine, Hallym University, Chuncheon, Korea.

Objective: In Asians, kneeling and squatting are the postures that are most often induce common peroneal neuropathy. However, we could not identify a compatible compression site of the common peroneal nerve (CPN) during hyper-flexion of knees. To evaluate the course of the CPN at the popliteal area related with compressive neuropathy using magnetic resonance imaging (MRI) scans of healthy Koreans. Read More

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