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https://www.readbyqxmd.com/read/28642658/study-of-the-anterolateral-ligament-of-the-knee-in-formalin-embedded-cadavers
#1
Paloma Batista Almeida Fardin, Juliana Hott de Fúcio Lizardo, Josemberg da Silva Baptista
OBJECTIVE: To verify the incidence and characterize morphologically the anterolateral ligament of the knee (ALL) in cadaveric samples of the collection of the Laboratory of Anatomy of the Department of Morphology of the Universidade Federal do Espírito Santo. METHODS: Dissections and cross sections were performed for mesoscopic analysis of the anterolateral region of 15 knees preserved in 4% formalin solution in order to identify the ALL. RESULTS: After dissection of the skin and subcutaneous tissue of the knee anterolateral region, it was possible to identify the iliotibial tract (ITT), the patellar ligament and the femoral biceps tendon...
March 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/28641973/changes-in-hip-knee-and-ankle-coronal-alignments-after-total-hip-arthroplasty-with-transverse-femoral-shortening-osteotomy-for-unilateral-crowe-type-iv-developmental-dysplasia-of-the-hip
#2
Abdulhamit Misir, Turan B Kizkapan, Kadir I Yildiz, Mehmet A Kaygusuz, Yakup Alpay, Atakan Ezici
BACKGROUND: To investigate changes in lower extremity coronal alignment in patients with unilateral Crowe type IV developmental dysplasia of the hip who underwent total hip arthroplasty with transverse femoral shortening osteotomy. METHODS: We reviewed the preoperative and 1-year postoperative full-length lower extremity radiographs of 25 patients. Femoral offset (FO), mechanical hip-knee-ankle angle, anatomical axis, mechanical axis deviation (MAD), mechanical lateral proximal femoral angle, anatomical medial proximal femoral angle, mechanical lateral distal femoral angle, anatomical lateral distal femoral angle, knee joint line congruency angle, mechanical medial proximal tibial angle, mechanical lateral distal tibial angle, ankle joint line orientation angle, tibial plafond talus angle, extremity length, and pelvic obliquity were measured on both the operative and nonoperative sides...
June 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28630763/malignant-tumours-of-the-foot-and-ankle
#3
E Mascard, N Gaspar, L Brugières, C Glorion, S Pannier, A Gomez-Brouchet
Most of tumours of the foot are tumour-like (synovial cyst, foreign body reactions and epidermal inclusion cyst) or benign conditions (tenosynovial giant cells tumours, planta fibromatosis). Malignant tumours of the soft-tissue and skeleton are very rare in the foot and their diagnosis is often delayed with referral to specialised teams after initial inappropriate procedures or unplanned excisions. The adverse effect of these misdiagnosed tumours is the increasing rate of amputation or local recurrences in the involved patients...
May 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28615108/kinematics-of-different-components-of-the-posterolateral-corner-of-the-knee-in-the-lateral-collateral-ligament-intact-state-a-human-cadaveric%C3%A2-study
#4
Christoph Domnick, Karl-Heinz Frosch, Michael J Raschke, Nils Vogel, Martin Schulze, Mathias von Glahn, Tobias C Drenck, Mirco Herbort
PURPOSE: To determine the static stabilizing effects of different anatomical structures of the posterolateral corner (PLC) of the knee in the lateral collateral ligament (LCL)-intact state. METHODS: Thirteen fresh-frozen human cadaveric knees were dissected and tested using an industrial robot with an optical tracking system. Kinematics were determined for 134 N anterior/posterior loads, 10 N m valgus/varus loads, and 5 N m internal/external rotatory loads in 0°, 20°, 30°, 60°, and 90° of knee flexion...
June 11, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28612204/three-dimensional-isotropic-magnetic-resonance-imaging-can-provide-a-reliable-estimate-of-the-native-anterior-cruciate-ligament-insertion-site-anatomy
#5
Daisuke Araki, Eric Thorhauer, Scott Tashman
PURPOSE: This study quantified the error in anterior cruciate ligament (ACL) insertion site location and area estimated from three-dimensional (3D) isotropic magnetic resonance imaging (MRI) by comparing to native insertion sites determined via 3D laser scanning. METHODS: Isotropic 3D DESS MRI was acquired from twelve fresh-frozen, ACL-intact cadaver knees. ACL insertion sites were manually outlined in each MRI slice, and the resulting contours combined to determine the 3D insertion site shape...
June 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28609131/a-comprehensive-reanalysis-of-the-distal-iliotibial-band-quantitative-anatomy-radiographic-markers-and-biomechanical-properties
#6
Jonathan A Godin, Jorge Chahla, Gilbert Moatshe, Bradley M Kruckeberg, Kyle J Muckenhirn, Alexander R Vap, Andrew G Geeslin, Robert F LaPrade
BACKGROUND: The qualitative anatomy of the distal iliotibial band (ITB) has previously been described. However, a comprehensive characterization of the quantitative anatomic, radiographic, and biomechanical properties of the Kaplan fibers of the deep distal ITB has not yet been established. It is paramount to delineate these characteristics to fully understand the distal ITB's contribution to rotational knee stability. Purpose/Hypothesis: There were 2 distinct purposes for this study: (1) to perform a quantitative anatomic and radiographic evaluation of the distal ITB's attachment sites and their relationships to pertinent osseous and soft tissue landmarks, and (2) to quantify the biomechanical properties of the deep (Kaplan) fibers of the distal ITB...
June 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28608727/osteoarthritis-of-the-anterior-cruciate-ligament-and-medial-tibial-plateau-a-cadaveric-study
#7
Jessica Immonen, Chris Siefring, Luke Sanders
The objective of this study was to analyze morphometric anatomy and damages with aging in cadaveric knee specimens specific to the cruciate ligaments, the articular cartilage of the tibial plateau, and the menisci. Morphometric analyses to cadaveric anatomy of the knee were performed using Image-Pro® software on 3 age populations: <70 years old, 70 to 79 years old, and ≥80 years old. An average thickness of the cruciate ligaments was assessed with 5 circumferential measurements per specimen using nylon thread...
June 1, 2017: Cartilage
https://www.readbyqxmd.com/read/28604466/unique-considerations-in-spinal-cord-stimulator-placement-in-pediatrics-a-case-report
#8
Eugene Kim, Giovanni Cucchiaro
Spinal cord stimulation can be a valuable treatment option in the management of neuropathic pain in select pediatric patients. We present a unique case of a 16-year-old girl with Klippel-Trenaunay-Weber syndrome and scoliosis who required the placement of a spinal cord stimulator (SCS) for severe sciatic nerve neuropathic pain after a right above-knee amputation. Several attempts at lead placement were required before successful pain coverage was achieved because of late recognition of significant vertebral body rotation...
June 8, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28593582/morphological-size-evaluation-of-the-mid-substance-insertion-areas-and-the-fan-like-extension-fibers-in-the-femoral-acl-footprint
#9
Makoto Suruga, Takashi Horaguchi, Takanori Iriuchishima, Yoshiyuki Yahagi, Genki Iwama, Yasuaki Tokuhashi, Shin Aizawa
PURPOSE: The purpose of this study was to evaluate the detailed anatomy of the femoral anterior cruciate ligament (ACL) insertion site, with special attention given to the morphology of the mid-substance insertion areas and the fan-like extension fibers. METHODS: Twenty-three non-paired human cadaver knees were used (7 Males, 16 Females, median age 83, range 69-96). All soft tissues around the knee were resected except the ligaments. The ACL was divided into antero-medial (AM) and postero-lateral (PL) bundles according to the difference in macroscopic tension patterns...
June 7, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28587797/comparison-of-long-term-outcomes-of-heparin-bonded-polytetrafluoroethylene-and-autologous-vein-below-knee-femoropopliteal-bypasses-in-patients-with-critical-limb-ischaemia
#10
C Uhl, C Grosch, C Hock, I Töpel, M Steinbauer
OBJECTIVE/BACKGROUND: Endovascular first is the preferred therapy approach to critical limb ischaemia (CLI). However, in spite of new endovascular techniques, bypass surgery still plays an important role, especially in patients with complex anatomy in whom endovascular therapy is not considered feasible, or has failed. The goal of this study was to analyse the outcomes of prosthetic or autologous vein for femoropopliteal (P3) bypasses performed under the abovementioned conditions. METHODS: A retrospective analysis of patients who underwent a femoropopliteal (P3) bypass for CLI (March 2007-December 2015) was conducted...
June 3, 2017: European Journal of Vascular and Endovascular Surgery
https://www.readbyqxmd.com/read/28581279/improved-software-to-browse-the-serial-medical-images-for-learning
#11
Koojoo Kwon, Min Suk Chung, Jin Seo Park, Byeong Seok Shin, Beom Sun Chung
The thousands of serial images used for medical pedagogy cannot be included in a printed book; they also cannot be efficiently handled by ordinary image viewer software. The purpose of this study was to provide browsing software to grasp serial medical images efficiently. The primary function of the newly programmed software was to select images using 3 types of interfaces: buttons or a horizontal scroll bar, a vertical scroll bar, and a checkbox. The secondary function was to show the names of the structures that had been outlined on the images...
July 2017: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/28579262/contact-forces-in-the-tibiofemoral-joint-from-soft-tissue-tensions-implications-to-soft-tissue-balancing-in-total-knee-arthroplasty
#12
Matthias A Verstraete, Patrick A Meere, Gaia Salvadore, Jan Victor, Peter S Walker
Proper tension of the knee's soft tissue envelope is important during total knee arthroplasty; incorrect tensioning potentially leads to joint stiffness or instability. The latter remains an important trigger for revision surgery. The use of sensors quantifying the intra-articular loads, allows surgeons to assess the ligament tension at the time of surgery. However, realistic target values are missing. In the framework of this paper, eight non-arthritic cadaveric specimens were tested and the intra-articular loads transferred by the medial and lateral compartment were measured using custom sensor modules...
May 23, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28579132/optimization-of-sagittal-and-coronal-planes-with-robotic-assisted-unicompartmental-knee-arthroplasty
#13
Michael A Gaudiani, Benedict U Nwachukwu, Jayesh V Baviskar, Mrinal Sharma, Anil S Ranawat
BACKGROUND: One of the anatomic goals of total knee arthroplasty (TKA) is optimizing in the coronal and sagittal plane. Accurate alignments of both planes have been correlated to functional outcome and range of motion. There is a paucity of evidence on the accuracy of unicompartmental knee arthroplasty (UKA) in balancing biplanar knee alignment - specifically sagittal plane alignment. Because robotic assisted UKA has an advantage of more accurately manipulating sagittal plane for optimal alignment and kinematics based on pre-operative and intraoperative CT planning we assessed the accuracy...
June 1, 2017: Knee
https://www.readbyqxmd.com/read/28573372/a-survey-of-anatomical-items-relevant-to-the-practice-of-rheumatology-pelvis-lower-extremity-and-gait
#14
Cristina Hernández-Díaz, José Alvarez-Nemegyei, José Eduardo Navarro-Zarza, Pablo Villaseñor-Ovies, Robert A Kalish, Juan J Canoso, Angélica Vargas, Karla Chiapas-Gasca, Joseph J Biundo, Francisco Javier de Toro Santos, Dennis McGonagle, Simon Carette, Miguel Ángel Saavedra
This study aimed to generate a minimum list of structural and functional anatomical items about the pelvis/hip, knee, ankle/foot, gait, and lower limb innervation, which are most relevant to the practice of rheumatology. To determine their perceived relevance to clinical practice, seven members of the Mexican Clinical Anatomy Task Force compiled an initial list of 470 anatomical items. Ten local and international experts according to a 0-10 Likert scale ranked these items. Of the original list, 101 (21.48%) items were considered relevant (global rate >40)...
June 1, 2017: Clinical Rheumatology
https://www.readbyqxmd.com/read/28514510/injury-to-the-infrapatellar-branch-of-the-saphenous-nerve-during-tendon-graft-harvesting-for-knee-ligament-reconstruction-an-ultrasound-simulation-study
#15
Przemysław A Pękala, Ewa Miza, Brandon Michael Henry, Patrick Popieluszko, Marios Loukas, Krzysztof A Tomaszewski
INTRODUCTION: The clinical anatomy of the infrapatellar branch of the saphenous nerve (IPBSN) is of particular importance during operations in the area of the knee, especially when material for anterior cruciate ligament reconstruction is harvested. The nerve can easily be injured during the harvesting procedure, leading to postoperative complications that reduce quality of life. Three different skin incisions are commonly used during hamstring tendon harvesting: horizontal, vertical, and oblique...
May 17, 2017: Clinical Anatomy
https://www.readbyqxmd.com/read/28511363/solving-the-mystery-of-the-antero-lateral-ligament
#16
P H Sonia Farhan, Rathi Sudhakaran, Jai Thilak
INTRODUCTION: The cruciate ligaments are essential for the antero-posterior stability of the knee joint. In Anterior Cruciate Ligament (ACL) rupture, though reconstructive surgery is a widely accepted and proven procedure, there is still an unacceptably high re-injury rate. The fact that the rotational instability persists even after the surgical reconstruction of ACL injury has evoked a new interest in the study of the soft tissue structures on the anterolateral aspect of the knee joint...
March 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28502535/even-cementless-surgeons-use-cement
#17
A Gulati, A R J Manktelow
BACKGROUND: Patients presenting with hip arthritis have huge variability in anatomy, bone quality, and functional expectation. These can contribute to a varying degree of complexity on both the femoral and acetabular sides. Surgeons should be aware of all the various options in fixation, bearing surface, and surgical technique. METHODS: In this article, based on a presentation given at the recent American Association of Hip and Knee Surgeons meeting in Dallas, we will discuss why and how cemented fixation can, and indeed should, be considered when making decisions regarding how a primary, complex primary, or revision hip arthroplasty should be performed...
March 1, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28478834/3d-printed-liner-for-treatment-of-periprosthetic-joint-infections
#18
Tae Won B Kim, Osvaldo J Lopez, Jillian P Sharkey, Kyle R Marden, Muhammad Ridwan Murshed, Shivakumar I Ranganathan
In the United States, long standing deep infections of joint arthroplasty, such as total knee and total hip replacements, are treated with two-stage exchange. This requires the removal of the prior implant, placement of an antibiotic eluting spacer block made of polymethylmethacrylate (PMMA), followed by re-implantation of a new implant after treatment with intravenous antibiotics for six to eight weeks. Unfortunately, the use of PMMA as a spacer material has limitations in terms of mechanical and drug-eluting properties...
May 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28477147/high-interspecimen-variability-in-engagement-of-the-anterolateral-ligament-an-in-vitro-cadaveric-study
#19
REVIEW
Robert N Kent, James F Boorman-Padgett, Ran Thein, Jelle P van der List, Danyal H Nawabi, Thomas L Wickiewicz, Carl W Imhauser, Andrew D Pearle
BACKGROUND: Anterolateral ligament (ALL) reconstruction as an adjunct to anterior cruciate ligament (ACL) reconstruction remains a subject of clinical debate. This uncertainty may be driven in part by a lack of knowledge regarding where, within the range of knee motion, the ALL begins to carry force (engages). QUESTIONS/PURPOSES: (1) Does the ALL engage in the ACL-intact knee; and (2) where within the range of anterior tibial translation occurring in the ACL-sectioned knee does the ALL engage? METHODS: A robotic manipulator was used to measure anterior tibial translation, ACL forces, and ALL forces in 10 fresh-frozen cadaveric knees (10 donors; mean age, 41 ± 16 years; range, 20-64 years; eight male) in response to applied multiplanar torques...
May 5, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28476361/editorial-commentary-the-anterolateral-ligament-what-we-know-what-we-do-not-know-and-how-this-article-helps
#20
EDITORIAL
Bruce A Levy, Rohith Mohan
A recent study on knee anterolateral ligament anatomy is a significant contribution to the literature because it provides precise isometric radiographic landmarks for both femoral and tibial tunnel placement, which are paramount to successful anterolateral ligament reconstruction.
May 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
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