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https://www.readbyqxmd.com/read/28798004/clear-cell-variant-of-calcifying-epithelial-odontogenic-tumor-a-rare-clinical-entity
#1
Husain Sabir, Subhash Kumbhare, Saurabh Redij, Namrata Gajbhiye
Calcifying epithelial odontogenic tumor (CEOT) is a rare benign odontogenic neoplasm of the jaws. Although clear cells have been reported in approximately 8% of cases of CEOT, the exact nature of these cells in clear cell calcifying epithelial odontogenic tumor (CCEOT) has not been elucidated. Presence of clear cells in CEOT may confer a more aggressive behavior to the lesion and a tendency for recurrence and metastatic spread. We report of a case of CCEOT in a 63 year old female patient which was first treated with enucleation; however recurrence prompted a segmental resection along with coronoid and condyle...
May 2017: Gulf Journal of Oncology
https://www.readbyqxmd.com/read/28795018/in-vivo-fluoroscopic-kinematography-of-dynamic-radio-ulnar-incongruence-in-dogs
#2
Thomas Rohwedder, Martin Fischer, Böttcher Peter
Aim of the study was to investigate dynamic radio-ulnar incongruence (dRUI) in the canine elbow joint comparing orthopedic healthy and dysplastic dogs in a prospective in vivo study design. In 6 orthopedic sound elbow joints (5 dogs, median age 17 months & mean body weight 27.9 kg) and 7 elbow joints with medial coronoid disease (6 dogs, median age 17.5 months & mean body weight 27.6 kg) 0.8 mm Ø tantalum beads were surgically implanted into radius, ulna and humerus for dynamic radiosteriometric analysis (RSA) using high-speed biplanar fluoroscopy with the dogs walking on a treadmill...
2017: Open veterinary journal
https://www.readbyqxmd.com/read/28779799/editorial-commentary-danger-zone-the-posteromedial-elbow-don-t-go-looking-for-trouble-and-it-won-t-find-you-arthroscopic-management-of-the-arthritis-elbow
#3
EDITORIAL
Felix H Savoie
Arthroscopy for elbow arthritis has been used by this author for 30 years. There are many benefits to arthroscopic management of the arthritic elbow. A complete understanding of the pathology is essential to correct surgical management. Excision of spurs and osteophytes, deepening of the coronoid or olecranon fossa, removal of loose bodies, and synovectomy are essential. Arthritis is usually not a capsular problem, so the releases needed for post-traumatic ankylosis takedown are not usually necessary in the arthritic elbow...
August 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28774721/ontogenetic-and-functional-modularity-in-the-rodent-mandible
#4
Rachel A Menegaz, Matthew J Ravosa
The material properties of diets consumed by juvenile individuals are known to affect adult morphological outcomes. However, much of the current experimental knowledge regarding dietary effects on masticatory form is derived from studies in which individuals are fed a non-variable diet for the duration of their postweaning growth period. Thus, it remains unclear how intra-individual variation in diet, due to ontogenetic variation in feeding behaviors or seasonal resource fluctuations, affects the resulting adult morphology...
June 8, 2017: Zoology: Analysis of Complex Systems, ZACS
https://www.readbyqxmd.com/read/28738192/maxillary-reconstruction-using-submental-artery-island-flap-and-sagittal-mandibular-ramus-coronoid-process-graft-pedicled-with-temporalis-muscle
#5
W H Wang, Z R Zou, B Xu, W Q Wang, S Y Shen
PURPOSE: The purpose of this study is to describe maxillary reconstruction using the submental artery island flap and the sagittal mandibular ramus and coronoid process graft pedicled with the temporalis muscle through the modified lateral lip and submandibular approach. MATERIALS AND METHODS: From May 2013 to September 2016, 11 patients with maxillary defects secondary to maxillary cancer ablation who underwent maxillary reconstruction using a submental artery island flap and a sagittal mandibular ramus and coronoid process graft pedicled with the temporalis muscle through the modified lateral lip and submandibular approach were enrolled in this prospective study...
June 29, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28734719/coronoid-reconstruction-using-osteochondral-grafts-a-biomechanical-study
#6
Enrico Bellato, Youngbok Kim, James S Fitzsimmons, Lawrence J Berglund, Alexander W Hooke, Daniel R Bachman, Shawn W O'Driscoll
HYPOTHESIS: The purposes of this study were to test the hypothesis that coronoid deficiency in the setting of posteromedial rotatory instability (PMRI) must be reconstructed to restore articular contact pressures to normal and to compare 3 different osteochondral grafts for this purpose. METHODS: After creation of a anteromedial fracture, six cadaveric elbows were tested under gravity varus stress using a custom-made machine designed to simulate muscle loads and to passively flex the elbow...
July 19, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28734536/evaluation-of-functional-outcome-after-nonsurgical-management-of-terrible-triad-injuries-of-the-elbow
#7
Farid Najd Mazhar, Davod Jafari, Alireza Mirzaei
BACKGROUND: Terrible triad (TT) is one of the severe injuries of the elbow that generally requires surgery. Nonsurgical treatment has recently been applied in selected cases of TT injury. Evaluation of the results of this treatment was the main aim of this study. METHODS: In a prospective cohort study, 10 patients with a mean follow-up of 30.6 months were evaluated. The inclusion criteria included a congruent joint after closed reduction, no indication for surgery of the coronoid and radial head fractures, no block in supination and pronation up to 60°, no intra-articular fragments, and a free and stable joint with ulnohumeral extension up to a minimum of 45°...
August 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28691465/bilateral-coronoid-hyperplasia-a-report-of-six-cases
#8
M Romano, G Porcellini, D Rossi, A Bolzoni, A B Giannì, F J Silvestre, A Baj
Bilateral coronoid process hyperplasia is a rare condition defined as an abnormal elongation of the mandibular coronoid process, formed of histologically normal bone. Coronoid process hyperplasia usually develops progressively, and the clinical symptoms are often similar to those of temporomandibular joint disorders (TMD). Therefore, it is often misdiagnosed as TMD initially. From 2013 to 2016, six patients were referred to our maxillofacial surgery unit by their dentist, to evaluate mouth opening with suspected TMJ disorder...
April 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28689821/role-of-the-lateral-collateral-ligament-in-posteromedial-rotatory-instability-of-the-elbow
#9
Enrico Bellato, Youngbok Kim, James S Fitzsimmons, Alexander W Hooke, Lawrence J Berglund, Daniel R Bachman, Shawn W O'Driscoll
BACKGROUND: Posteromedial rotatory instability (PMRI) of the elbow consists of an anteromedial coronoid fracture with lateral collateral ligament (LCL) and posterior bundle of the medial collateral ligament (PMCL) tears. We hypothesized that the LCL tear is required for elbow subluxation/joint incongruity and that an elbow affected by an anteromedial subtype 2 coronoid fracture and a PMCL tear exhibits contact pressures different from both an intact elbow and an elbow affected by PMRI...
July 6, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28688869/ankylosis-of-temporomandibular-joints-after-mandibular-distraction-osteogenesis-in-patients-with-nager-syndrome-report-of-two-cases-and-literature-review
#10
REVIEW
Cheng Chun Wu, Daisuke Sakahara, Keisuke Imai
Nager syndrome, also known as Nager acrofacial dysostosis, was first described by Nager and de Reynier in 1948. The patients commonly present with micrognathia, and a preventive tracheostomy is necessary when there are symptoms of upper airway obstruction. Mandibular distraction osteogenesis is considered as an effective procedure, which not only improves micrognathia but also minimizes the chances of tracheostomy. However, mandibular distraction osteogenesis has some complications such as relapse, teeth injury, infection, and injury of the temporomandibular joints (TMJs)...
February 7, 2017: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
https://www.readbyqxmd.com/read/28666671/arthroscopic-management-of-elbow-osteoarthritis
#11
REVIEW
Leo T Kroonen, Samantha L Piper, Andrew C Ghatan
The incidence of osteoarthritis in the general population is low, but it can be seen in manual laborers, throwing athletes, and people dependent on crutches and wheelchairs. Patients often complain of pain at the terminal extents of motion, and imaging shows osteophyte formation at the tips of the coronoid and olecranon processes as well as thickening of the bone between the coronoid and the olecranon fossae. Recent advances in arthroscopic instrumentation and techniques have led to a growing interest in the arthroscopic treatment of elbow osteoarthritis...
June 28, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28663018/intraoral-vertico-sagittal-ramus-osteotomy-modification-of-the-l-shaped-osteotomy
#12
J Iwanaga, S Kikuta, M Nakamura, A Koba, K Ogata, S Toyofuku, R S Tubbs, J Kusukawa
The sagittal split ramus osteotomy and intraoral vertical ramus osteotomy carry the potential risk of postoperative nerve paralysis, bleeding, and fracture and dislocation of the condyle. In 1992, Choung first described the intraoral vertico-sagittal ramus osteotomy for the purpose of avoiding postoperative dislocation of the condyle. However, there is still potential for damaging the inferior alveolar nerve and maxillary artery with this technique. The authors have developed a modified technique to minimize these risks...
June 26, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28655630/a-novel-anterior-approach-for-the-fixation-of-ulnar-coronoid-process-fractures
#13
Xiaohua Yang, Wenli Chang, Wei Chen, Song Liu, Yanbin Zhu, Yingze Zhang
BACKGROUND: There is no universally accepted approachto the elbow for the fixation of coronoid process fractures.This study aims to introduce a novel anterior surgicalapproach for the fixation of the ulnar coronoid fracture, with minimal surgical dissection damage and excellent visualization for reduction and internal fixation. HYPOTHESIS: The anterior approach can facilitatesatisfactory outcomesfor coronoid process fractures. MATERIAL AND METHODS: From February 2010 to July 2014, 12 patients (8 males and 4 females; range 14-62 years; mean age 31 years) with a closed fracture of the coronoid process of the ulna were included in this study...
June 24, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28653544/operative-management-of-unstable-radial-head-fractures-in-a-young-active-population
#14
Nicholas Kusnezov, Emmanuel Eisenstein, John C Dunn, Austin Fares, Justin Mitchell, Kelly Kilcoyne, Brian R Waterman
BACKGROUND: Radial head and neck fractures are the most common elbow fracture in the general adult population; however, the optimal treatment for radial head fractures remains a topic of ongoing clinical controversy. The purpose of this study was to determine the rate of return to function, complications, and reoperation following operative management of unstable radial head fractures in a young, active patient population with intense upper extremity demands. METHODS: A military health care database was queried for all US military servicemembers undergoing open reduction with internal fixation (ORIF; Current Procedural Terminology [CPT] code: 24665) and radial head arthroplasty (RHA; CPT code: 24666) between 2010 and 2015...
June 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28634742/outcomes-of-coronoid-first-repair-in-terrible-triad-injuries-of-the-elbow
#15
Junren Zhang, Mark Tan, Ernest Beng Kee Kwek
BACKGROUND: Clinical outcomes of terrible triad injuries (TTIs) of the elbow are historically poor. To date, it is still debatable whether the coronoid needs to be fixed and if so, how and in which sequence. METHODOLOGY: Between 2010 and 2013, 13 patients were treated surgically for acute TTIs of the elbow at a Tertiary Level 1 Trauma Centre by a single surgeon, using a standardized protocol, which included coronoid-brachialis complex fixation via pull-through trans-osseous sutures, radial head fixation or prosthetic replacement and a repair of the lateral ulnar collateral ligament...
June 20, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28601399/erratum-to-lasso-plate%C3%A2-%C3%A2-an-original-implant-for-fixation-of-type-i-and-ii-regan-morrey-coronoid-fractures-orthop-traumatol-surg-res-103-2017-447-51
#16
P Wang, Y Zhuang, Z Li, W Wei, Y Fu, X Wei, K Zhang
No abstract text is available yet for this article.
June 7, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28590398/bilateral-coronoid-hyperplasia-in-a-43-year-old-patient-treated-with-intraoral-coronoidectomy
#17
Jonathan Ribeiro da Silva, Rodrigo Dos Santos Pereira, Caroline Águeda, Paulo Marcos Nunes, Charles Marin, Eduardo Hochuli-Vieira
The mandibular coronoid hyperplasia can be classified as a congenital or development change of the temporomandibular joint. This condition occurs due to a no-neoplasic growth of the coronoid process to the infratemporal fossa. Thus, this part of the bone impacts in the posterior face of the zygomatic bone causing limitation of the mouth opening. The aim of this paper is to report a clinical case of a 43-year-old male with mouth-opening limitation 28 years ago. After clinical and computed tomographic examinations, he was diagnosed with bilateral mandibular coronoid hyperplasia...
June 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28585258/masticatory-muscle-architecture-in-a-water-rat-from-australasia-murinae-hydromys-and-its-implication-for-the-evolution-of-carnivory-in-rodents
#18
P-H Fabre, A Herrel, Y Fitriana, L Meslin, L Hautier
Murines are well known for their generalist diet, but several of them display specializations towards a carnivorous diet such as the amphibious Indo-Pacific water-rats. Despite the fact that carnivory evolved repeatedly in this group, few studies have investigated associated changes in jaw muscle anatomy and biomechanics. Here, we describe the jaw muscles and cranial anatomy of a carnivorous water-rat, Hydromys chrysogaster. The architecture of the jaw musculature of six specimens captured both on Obi and Papua were studied and described using dissections...
June 6, 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28584466/morphometric-analysis-of-mandibular-ramus-for-sex-determination-on-digital-orthopantomogram
#19
Chandramani Bhagwan More, Ritika Vijayvargiya, Nairita Saha
BACKGROUND: Identification of sex from skeletal remains is an important tool in forensic science. Mandibular ramus can be used for sex determination either on dry mandible or through orthopantomogram (OPG). AIM: To determine the sex from mandibular ramus using digital OPG. MATERIALS AND METHODS: The morphometric analysis was conducted on mandibular ramus of 1000 digital OPG using Kodak Master View version 4.3 software. Statistical analysis was performed, and independent t-test and discriminant function were applied...
January 2017: Journal of Forensic Dental Sciences
https://www.readbyqxmd.com/read/28572849/ulnohumeral-dislocation-despite-intact-radiocapitellar-joint-a-rare-monteggia-variant
#20
Carl Ekholm, Johan Sampson
We treated one patient with a mid-diaphyseal radius fracture and concomitant anteromedial facet fracture of the coronoid. The ulnohumeral joint was severely unstable by complete ligament detachment and interosseous membrane rupture. Despite this gross instability, the radiocapitellar was congruent and stable. The possible mechanism of radiocapitellar stability is discussed and the concept of concavity-compression stability across the radiocapitellar joint is emphasized.
January 2017: Shoulder & Elbow
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