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https://www.readbyqxmd.com/read/27923169/primary-stability-of-unicompartmental-knee-arthroplasty-under-dynamic-flexion-movement-in-human-femora
#1
Thomas M Grupp, Melanie Holderied, Matthias F Pietschmann, Christian Schröder, Angélica P Islas Padilla, Christoph Schilling, Volkmar Jansson, Peter E Müller
BACKGROUND: The objective of our study was to evaluate the impact of a trabecular stem fixation versus a cortical teeth fixation technique on the primary stability of cemented unicompartmental femoral components under dynamic flexion movement loading conditions in human femora. METHODS: Ten fresh-frozen human knees of a mean donor age of 73.9years were used to perform medial unicompartmental knee arthroplasty under a less invasive parapatellar surgical approach...
November 26, 2016: Clinical Biomechanics
https://www.readbyqxmd.com/read/27922961/costochondral-graft-in-young-children-with-hemifacial-microsomia
#2
Bin-Zhang Wu, Lian Ma, Yang Li, Shuo Chen, Biao Yi
Patients with severely hypoplastic mandibles usually require condylar reconstruction. This study aimed to describe costochondral graft (CCG) for condylar reconstruction and report subsequent outcomes of these grafts in young children with Pruzansky/Kaban type IIB and type III mandibular hypoplasia. This study included 4 young children with type IIB and type III hemifacial microsomia treated with CCG to reconstruct the condyle at the Department of Oral and Maxillofacial Surgery in our hospital from March 2008 to March 2014...
December 5, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27918596/degeneration-in-acl-injured-knees-with-and-without-reconstruction-in-relation-to-muscle-size-and-fat-content-data-from-the-osteoarthritis-initiative
#3
Pia M Jungmann, Thomas Baum, Michael C Nevitt, Lorenzo Nardo, Alexandra S Gersing, Nancy E Lane, Charles E McCulloch, Ernst J Rummeny, Thomas M Link
BACKGROUND: Anterior cruciate ligaments (ACL) injuries represent a major risk factor for early osteoarthritis (OA). PURPOSE: To evaluate the prevalence and 4-year progression of knee OA measured with 3T MR-imaging in individuals with ruptured, reconstructed or normal ACL and to assess the impact of thigh muscle characteristics. METHODS: A total of 54 knees (23/54 male, 31/54 female) were recruited from the Osteoarthritis Initiative (OAI). At baseline, 15/54 subjects had prevalent ACL ruptures and 15/54 subjects had prevalent ACL reconstruction (24/54 normal ACL)...
2016: PloS One
https://www.readbyqxmd.com/read/27914723/evaluation-of-knee-cartilage-thickness-a-comparison-between-ultrasound-and-magnetic-resonance-imaging-methods
#4
Randy J Schmitz, Hsin-Min Wang, Daniel R Polprasert, Robert A Kraft, Brian G Pietrosimone
BACKGROUND: Establishing clinically accessible measures of cartilage health is critical for assessing effectiveness of protocols to reduce risk of osteoarthritis (OA) development and progression. Cartilage thickness is one important measure in describing both OA development and progression. The objective was to determine the relationship between ultrasound and MRI measures of cartilage thickness in the medial femoral condyle. METHODS: Mean cartilage thicknesses of the left medial femoral cartilage were measured via T1 weighted MRI and ultrasound imaging from transverse, anterior, middle, and posterior medial femoral regions in 10 healthy females (Mean±Std Dev) (1...
November 30, 2016: Knee
https://www.readbyqxmd.com/read/27908598/cell-compaction-influences-the-regenerative-potential-of-passaged-bovine-articular-chondrocytes-in-an-ex%C3%A2-vivo-cartilage-defect-model
#5
Michael Schmutzer
The loss and degradation of articular cartilage tissue matrix play central roles in the process of osteoarthritis (OA). New models for evaluating cartilage repair/regeneration are thus of great value for transferring various culture systems into clinically relevant situations. The repair process can be better monitored in ex vivo systems than in in vitro cell cultures. I have therefore established an ex vivo defect model prepared from bovine femoral condyles for evaluating cartilage repair by the implantation of cells cultured in various ways, e...
November 28, 2016: Journal of Bioscience and Bioengineering
https://www.readbyqxmd.com/read/27906096/biological-and-functional-evaluation-of-a-novel-pyrolytic-carbon-implant-for-the-treatment-of-focal-osteochondral-defects-in-the-medial-femoral-condyle-assessment-in-a-canine-model
#6
Samantha L Salkeld, Laura P Patron, Joan C Lien, Stephen D Cook, Deryk G Jones
BACKGROUND: Osteochondral defects continue to be a clinical treatment challenge, and when left untreated, may cause pain and functional impairment. Pyrolytic carbon is a unique isotropic biomaterial used in heart valve and small joint replacements due to its excellent wear properties and biocompatibility with bone and articular cartilage. Therefore, a proposed solution is to utilize a focal pyrolytic carbon hemiarthroplasty implant as an alternative resurfacing treatment strategy for isolated cartilage lesions...
December 1, 2016: Journal of Orthopaedic Surgery and Research
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
#7
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
#8
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
#9
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/27902645/effect-of-nerve-stimulation-use-on-the-success-rate-of-ultrasound-guided-subsartorial-saphenous-nerve-block-a-randomized-controlled-trial
#10
Shaylyn H Montgomery, Colleen M Shamji, Grace S Yi, Cynthia H Yarnold, Stephen J Head, Scott C Bell, Stephan K W Schwarz
BACKGROUND AND OBJECTIVES: Ultrasound-guided subsartorial saphenous nerve block is commonly used to provide complete surgical anesthesia of the foot and ankle in combination with a popliteal sciatic nerve block. However, in part owing to its small caliber and absence of a prominent vascular landmark in the subsartorial plane distal to the adductor canal, the saphenous nerve is more difficult to reliably block than the sciatic nerve in the popliteal fossa. Although the saphenous nerve is a sensory nerve only, neurostimulation can be used to elicit a "tapping" sensation on the anteromedial aspect of the lower leg extending toward the medial malleolus...
November 29, 2016: Regional Anesthesia and Pain Medicine
https://www.readbyqxmd.com/read/27902636/risk-of-infection-and-secondary-displacement-in-pediatric-supracondylar-or-lateral-condyle-fractures-treated-with-unburied-kirchener-wires-removed-before-complete-bone-healing
#11
Sylvain Aubret, Thibaut Lecointe, Mounira Mansour, Marie Rousset, Antonio Andreacchio, Bruno Pereira, Yann Philippe Charles, Federico Canavese
This study evaluated the risk of infection and of secondary displacement among children with displaced lateral condyle or supracondylar fractures treated by surgery. The study included a consecutive sample of 84 supracondylar fractures and 21 lateral condyle fractures treated with closed reduction and percutaneous pinning. The mean time to Kirchener wire removal was 29 days (range: 25-37 days) postsurgery. Two out of 105 (1.9%) patients developed infectious complications and two of 105 (1.9%) patients had a secondary displacement...
November 29, 2016: Journal of Pediatric Orthopedics. Part B
https://www.readbyqxmd.com/read/27901236/class-iii-malocclusion-with-maxillary-deficiency-mandibular-prognathism-and-facial-asymmetry
#12
Guilherme de Araújo Almeida
This article reports the clinical case of a female patient with history of unsuccessful orthodontic treatment. She presented with Class III malocclusion, mandibular and maxillary constriction, anterior crossbite and facial asymmetry resulting from laterognathism triggered by hyperactivity of the condyle revealed by vertical elongation of the right mandibular ramus. Patient's treatment consisted of orthodontic mechanics and two orthognathic surgical interventions with satisfactory and stable outcomes. This case was presented to the Brazilian Board of Orthodontics and Dentofacial Orthopedics (BBO), as part of the requirements for obtaining the BBO Diplomate title...
September 2016: Dental Press Journal of Orthodontics
https://www.readbyqxmd.com/read/27900824/mandibular-angle-fractures-a-comparative-study-between-one-and-two-plate-fixation
#13
Marcelo Silva Monnazzi, Marisa Ap Cabrini Gabrielli, Mário Francisco Real Gabrielli, Alexandre Elias Trivellato
BACKGROUND/AIM: The mandibular angle fracture is a challenging fracture to manage. Over time, the literature has shown many types of treatment modalities and different kinds of internal fixation. The aim of this study was to evaluate the outcomes and complications of mandibular angle fractures managed by Champy's technique and two-plate fixation, over a period of 20 years. MATERIAL AND METHODS: The files of 149 patients with 155 angle fractures fulfilled the inclusion criteria and were chosen for this study...
November 7, 2016: Dental Traumatology: Official Publication of International Association for Dental Traumatology
https://www.readbyqxmd.com/read/27900503/custom-made-mouth-prop-for-tmj-arthrocentesis-a-technical-note
#14
Shakil Ahmed Nagori, P K Chattopadhyay, Saurav Kumar, K Kamalpathey
INTRODUCTION: TMJ arthrocentesis involves lavage of the upper joint space which forces the disc apart from the fossa and washes away the inflammatory components of the joint. To increase the joint space during arthrocentesis, the patient is usually asked to open the mouth and deviate it to the opposite side so as to distract the condyle from the glenoid fossa thereby increasing joint space. METHOD: The authors describe a simple and rapid technique of preparing a custom-made mouth prop to hold the mandible in eccentric position during arthrocentesis...
November 29, 2016: Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27898885/osteochondrosis-prevalence-and-severity-at-12-and-24-weeks-of-age-in-commercial-pigs-with-and-without-organic-complexed-trace-mineral-supplementation
#15
F Tóth, J L Torrison, L Harper, D Bussieres, M E Wilson, T D Crenshaw, C S Carlson
Maternal and progeny diets supplemented with 2 sources of trace mineral (TM) were evaluated for effects on the size and severity of osteochondrosis (OC) lesions in progeny produced by 64 Landrace × Large White sows. At breeding, sows were randomly assigned to maternal diets (gestation and lactation) consisting 1 of 2 TM treatments. One treatment consisted of inorganic TM (ITM) with ZnO, MnSO, and CuSO at concentrations to provide 150, 50, and 16.5 mg/kg diet of Zn, Mn, and Cu, respectively. The other treatment consisted of the same ITM concentrations plus an additional 50, 20, and 10 mg/kg diet of Zn, Mn, and Cu, respectively, supplied by a blend of AA-complexed TM (CTM) using Availa Sow...
September 2016: Journal of Animal Science
https://www.readbyqxmd.com/read/27896214/a-case-of-severe-mandibular-retrognathism-with-bilateral-condylar-deformities-treated-with-le-fort-i-osteotomy-and-two-advancement-genioplasty-procedures
#16
Masahiro Nakamura, Takeshi Yanagita, Tatsushi Matsumura, Takashi Yamashiro, Seiji Iida, Hiroshi Kamioka
We report a case involving a young female patient with severe mandibular retrognathism accompanied by mandibular condylar deformity that was effectively treated with Le Fort I osteotomy and two genioplasty procedures. At 9 years and 9 months of age, she was diagnosed with Angle Class III malocclusion, a skeletal Class II jaw relationship, an anterior crossbite, congenital absence of some teeth, and a left-sided cleft lip and palate. Although the anterior crossbite and narrow maxillary arch were corrected by interceptive orthodontic treatment, severe mandibular hypogrowth resulted in unexpectedly severe mandibular retrognathism after growth completion...
November 2016: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/27895899/oxidatively-degradable-poly-thioketal-urethane-ceramic-composite-bone-cements-with-bone-like-strength
#17
Madison A P McEnery, Sichang Lu, Mukesh K Gupta, Katarzyna J Zienkiewicz, Joseph C Wenke, Kerem N Kalpakci, Daniel Shimko, Craig L Duvall, Scott A Guelcher
Synthetic bone cements are commonly used in orthopaedic procedures to aid in bone regeneration following trauma or disease. Polymeric cements like PMMA provide the mechanical strength necessary for orthopaedic applications, but they are not resorbable and do not integrate with host bone. Ceramic cements have a chemical composition similar to that of bone, but their brittle mechanical properties limit their use in weight-bearing applications. In this study, we designed oxidatively degradable, polymeric bone cements with mechanical properties suitable for bone tissue engineering applications...
2016: RSC Advances
https://www.readbyqxmd.com/read/27893558/medial-femoral-condyle-free-flap-for-premaxillary-reconstruction-in-median-facial-dysplasia
#18
Jong Woo Choi, Woo Shik Jeong, Soon Man Kwon, Kyung S Koh
OBJECTIVE: Median facial dysplasia is a distinct development anomaly of the craniofacial region that is characterized by deficient mid facial structures. Medial femoral condyle free flap could be used as a bony flap, and the unique characteristics of this flap provide the surgeons with the periosteal component as well. In this work, the authors present our experience with a patient of median facial dysplasia with unilateral cleft lip, cleft palate, and premaxillary deficiency. METHODS: The patient was diagnosed with median facial dysplasia accompanied by unilateral cleft lip, cleft palate, and premaxillary...
November 23, 2016: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/27893158/articular-cartilage-scores-in-cranial-cruciate-ligament-deficient-dogs-with-or-without-bucket-handle-tears-of-the-medial-meniscus
#19
Kathryn Kaufman, Brian S Beale, Howard D Thames, W Brian Saunders
OBJECTIVE: To compare articular cartilage scores in cranial cruciate ligament (CCL)-deficient dogs with or without concurrent bucket handle tears (BHT) of the medial meniscus. STUDY DESIGN: Retrospective case series. ANIMALS: Client-owned dogs treated with arthroscopy and tibial plateau leveling osteotomy or extracapsular repair for complete CCL rupture (290 stifles from 264 dogs). METHODS: Medical records and arthroscopic images were reviewed...
November 28, 2016: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/27892493/autologous-temporomandibular-joint-reconstruction-independent-of-exogenous-additives-a-proof-of-concept-study-for-guided-self-generation
#20
Jiao Wei, Tanja Herrler, Dong Han, Kai Liu, Rulin Huang, Markus Guba, Chuanchang Dai, Qingfeng Li
Joint defects are complex and difficult to reconstruct. By exploiting the body's own regenerative capacity, we aimed to individually generate anatomically precise neo-tissue constructs for autologous joint reconstruction without using any exogenous additives. In a goat model, CT scans of the mandibular condyle including articular surface and a large portion of the ascending ramus were processed using computer-aided design and manufacturing. A corresponding hydroxylapatite negative mold was printed in 3D and temporarily embedded into the transition zone of costal periosteum and perichondrium...
November 28, 2016: Scientific Reports
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