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glenoid morphology

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https://www.readbyqxmd.com/read/30332921/condylar-long-axis-and-articular-eminence-in-mri-in-patients-with-temporomandibular-disorders
#1
Maria Grazia Piancino, Michele Tepedino, Francesco Cavarra, Ennio Bramanti, Giuseppina Laganà, Claudio Chimenti, Stefano Cirillo
OBJECTIVE: To compare morphologic findings in MRI and skeletal divergence of a group of patients with temporomandibular joint disorders (TMD) subdivided into condylar symmetric and asymmetric. METHODS: Fifty-nine adults (26.7 years old) with TMD were retrospectively recruited. Condylar height symmetry was evaluated by orthopantomography (Habets's method) and used to divide patients into Symmetric and Asymmetric groups; skeletal divergence was assessed on lateral cephalograms...
October 17, 2018: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/30328484/multilevel-glenoid-morphology-and-retroversion-assessment-in-walch-b2-and-b3-types
#2
Mohammad Samim, Mandeep Virk, David Mai, Kamran Munawar, Joseph Zuckerman, Soterios Gyftopoulos
OBJECTIVE: A major factor that impacts the long-term outcome and complication rates of total shoulder arthroplasty is the preoperative posterior glenoid bone loss quantified by glenoid retroversion. The purpose of this study was to assess if glenoid retroversion varies significantly at different glenoid heights in Walch B2 and B3 glenoids. MATERIALS AND METHODS: Patients with B2 and B3 glenoid types were included following retrospective review of 386 consecutive CT shoulder studies performed for arthroplasty preoperative planning...
October 17, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/30328308/association-between-the-morphology-and-thickness-of-bony-components-of-the-temporomandibular-joint-and-gender-age-and-remaining-teeth-on-cone-beam-ct-images
#3
Tahmineh Razi, Sedigheh Razi
BACKGROUND: Various factors such as aging, sex hormones and the distribution pattern of occlusal forces affect the morphology and osseous components of the temporomandibular joint (TMJ). Recognition of the effects of these factors on the anatomy of the area results in the differentiation of normal variations from abnormal cases. OBJECTIVES: The aim of the present study was to evaluate the relationship between the condyle and other hard components of TMJ, and age, gender and the number of remaining teeth...
July 2018: Dental and medical problems
https://www.readbyqxmd.com/read/30324222/predetermining-glenoid-dimensions-using-the-scapular-dimensions
#4
Wunnee Chaijaroonkhanarak, Pattama Amarttayakong, Somsiri Ratanasuwan, Pornpimol Kirirat, Wanassanan Pannangrong, Jariya Umka Welbat, Parichat Prachaney, Amnart Chaichun, Surachai Sae-Jung
BACKGROUND: Variations of morphology of the glenoid cavity have been previously reported. These influence the surgical reconstruction or arthroplasty of the shoulder. This study aims to study the variation of the shape of suprascapular notch, shape of glenoid cavity, dimensions of both the scapular and the glenoid cavity, and predict the glenoid dimensions from the scapular dimension parameters. MATERIALS AND METHODS: Adult-dried scapulae were collected. The shapes of each suprascapular notch and glenoid cavity were evaluated...
October 15, 2018: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/30260909/scapular-notching-in-reverse-total-shoulder-arthroplasty
#5
Richard Joel Friedman, David Anthony Barcel, Josef Karl Eichinger
Scapular notching is a common radiographic finding occurring after reverse total shoulder arthroplasty, and it refers to an erosive lesion of the inferior scapular neck because of the impingement of the humeral implant during adduction. The clinical importance of notching is unclear, and the optimal treatment of severe notching is unknown. The incidence and severity of scapular notching is related to prosthetic design and surgical technique. Implant design factors include size, shape, and position of the glenosphere, inclination of the humeral neck-shaft angle, implant offset, and native scapular anatomy...
September 26, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/30252949/temporomandibular-joint-magnetic-resonance-imaging-findings-in-adolescents-with-anterior-disk-displacement-compared-to-those-with-juvenile-idiopathic-arthritis
#6
Christian J Kellenberger, Jeannine Bucheli, Silke Schroeder-Kohler, Rotraud K Saurenmann, Vera Colombo, Dominik A Ettlin
BACKGROUND: Deformation of the mandibular condyle can be associated with anterior disk displacement (ADD) or involvement of the temporomandibular joint (TMJ) by juvenile idiopathic arthritis (JIA). Diagnostic differentiation is critical for proper management. OBJECTIVES: To compare morphology and inflammation between TMJs with ADD and JIA. METHODS: Retrospective assessment of contrast-enhanced TMJ MRI in 18 adolescents (15 female, mean age 15...
September 25, 2018: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/30245228/a-circular-depression-at-the-spinoglenoid-notch-of-a-prehistoric-andean-scapula-plausible-evidence-of-suprascapular-nerve-entrapment-by-a-paralabral-cyst
#7
Anne R Titelbaum, Bebel Ibarra Asencios, Bronwyn E McNeil
While intraosseous cysts have been described in the paleopathological literature, it is rare to find reports concerning effects of soft tissue cysts, although they are relatively common in clinical contexts. Here we present plausible evidence of an extraosseous paralabral cyst, seen in an adult scapula from a Late Intermediate period commingled tomb (ca. AD 1200) at the northern highland site of Marcajirca, Ancash, Peru. The scapula demonstrated a smooth-sided concave depression at the spinoglenoid notch. The depression was notable for its regular appearance, with no bone deposition or destruction...
September 20, 2018: International Journal of Paleopathology
https://www.readbyqxmd.com/read/30169114/variations-in-the-anatomic-morphology-of-the-lateral-distal-tibia-surgical-implications-for-distal-tibial-allograft-glenoid-reconstruction
#8
Stephen A Parada, K Aaron Shaw, Colleen Moreland, Douglas R Adams, Mickey S Chabak, Matthew T Provencher
BACKGROUND: Distal tibial allograft glenoid augmentation has been introduced as a viable treatment approach for glenoid bone loss in conjunction with shoulder instability. No previous study, however, has assessed the morphologic variation of the distal tibia at the incisura as it relates to graft dimensions for glenoid augmentation. Increased concavity at the lateral distal tibia necessitates removal of the lateral cortex to obtain a flat surface, which may have implications for the strength of surgical fixation...
October 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30095986/radiographic-analysis-of-glenoid-size-and-shape-after-arthroscopic-coracoid-autograft-versus-distal-tibial-allograft-in-the-treatment-of-anterior-shoulder-instability
#9
Ivan H Wong, John Paul King, Gordon Boyd, Michael Mitchell, Catherine Coady
BACKGROUND: The Latarjet procedure for autograft transposition of the coracoid to the anterior rim of the glenoid remains the most common procedure for reconstruction of the glenoid after shoulder instability. The anatomic glenoid reconstruction using distal tibial allograft has gained popularity and is suggested to better match the normal glenoid size and shape. However, concerns about decreased healing and increased resorption arise when an allograft bone is used. PURPOSE: To use radiological findings to evaluate the arthroscopic reconstruction of the glenoid with respect to the size, shape, healing, and resorption of coracoid autograft versus distal tibial allograft...
September 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/30078426/revisiting-the-anterior-glenoid-an-analysis-of-the-calcified-cartilage-layer-capsulolabral-complex-and-glenoid-bone-density
#10
Michael R Karns, R Tyler Epperson, Sean Baran, Mattias B Nielsen, Nicholas B Taylor, Robert T Burks
PURPOSE: In this cadaveric study, we aim to define the basic anatomy of the anterior glenoid with attention to the relationships of calcified cartilage, capsulolabral complex, and osseous morphology of the anterior glenoid. METHODS: Seventeen cadaveric glenoid specimens (14 male, 3 female, mean age 53.9 ± 10) were imaged with micro-computed tomography (CT) and embedded in poly-methyl-methacrylate. Specimens were included for final analysis only if the entire glenoid articular cartilage, labrum, capsule, and biceps insertion were pristine and without evidence of injury, degeneration, or damage during the preparation process...
August 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/30062949/characterization-of-the-dysplastic-walch-type-c-glenoid
#11
R Paul, N Knowles, J Chaoui, M-O Gauci, L Ferreira, G Walch, G S Athwal
Aims: The Walch Type C dysplastic glenoid is characterized by excessive retroversion. This anatomical study describes its morphology. Patients and Methods: A total of 29 shoulders with a dysplastic glenoid were analyzed. CT was used to measure retroversion, inclination, height, width, radius-of-curvature, surface area, depth, subluxation of the humeral head and the Goutallier classification of fatty infiltration. The severity of dysplasia and deficiency of the posterior rim of the glenoid were recorded...
August 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/30054240/different-acromial-roof-morphology-in-concentric-and-eccentric-osteoarthritis-of-the-shoulder-a-multiplane-reconstruction-analysis-of-105-shoulder-computed-tomography-scans
#12
Silvan Beeler, Anita Hasler, Tobias Götschi, Dominik C Meyer, Christian Gerber
BACKGROUND: The pathomechanisms of eccentric osteoarthritis of the shoulder remain unclear. Although there is increasing evidence of bony differences between shoulders with rotator cuff tears and osteoarthritis, analogous differences have not been identified for primary concentric and eccentric osteoarthritis. This study examined the shape and orientation of the acromial roof as a potential risk factor for the development of posterior glenoid wear. METHODS: We analyzed computed tomography images of 105 shoulders with primary osteoarthritis...
July 24, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/30046634/a-biomechanical-and-structural-comparison-of-articular-cartilage-and-subchondral-bone-of-the-glenoid-and-humeral-head
#13
Bo Nasmyth Loy, Melissa Zimel, Ashok Laxman Gowda, Trevor Richard Tooley, Tristan Maerz, James Bicos, Joseph Guettler
Background: The underlying cause of glenohumeral arthritis is poorly understood. Glenohumeral arthrosis patterns have been classified and described, and differential contact stresses within the joint have been implicated as a cause of joint degeneration, but the intrinsic cause of degeneration patterns in the glenohumeral joint (GHJ) remains largely unknown. Purpose/Hypothesis: The purpose of this study was to assess morphological and mechanical differences in articular cartilage (AC) and subchondral bone (SCB) of the glenoid and humeral head in matched cadaveric specimens...
July 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29987440/rotator-cable-in-pathological-shoulders-comparison-with-normal-anatomy-in-a-cadaveric-study
#14
Michał Tomasz Podgórski, Łukasz Olewnik, Piotr Grzelak, Michał Polguj, Mirosław Topol
The rotator cable is a semicircular thickening of the glenohumeral joint capsule. It travels between tubercles of the humerus and interweaves with the supra- and infraspinatus muscle tendons. The rotator cable anchors these tendons to the tubercles, playing the role of a suspension bridge. However, little is known about the modifications of this cable that result from pathologies to the rotator cuff tendons. Thus, we aim to compare the morphology of the normal rotator cable with cables in specimens with rotator cuff injuries...
July 10, 2018: Anatomical Science International
https://www.readbyqxmd.com/read/29730136/a-simple-method-to-directly-evaluate-the-lateral-extension-of-the-acromion-an-anatomic-study-of-128-cadaveric-scapulae
#15
Trifon Totlis, Anirudh K Gowd, Eamon D Bernardoni, Brian J Cole, Nikhil N Verma, Konstantinos Natsis
BACKGROUND: The lateral extension of the acromion from the glenohumeral joint is the critical variable that both the acromial index and critical shoulder angle reflect. The purpose of this study was to establish a simple and reproducible method to directly measure the lateral extension of the acromion that will be independent of patient demographic characteristics, scapular rotation, or other morphologic features of the shoulder. METHODS: This study used 128 unpaired cadaveric scapulae with a mean age of 69...
September 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29717991/survival-to-amputation-in-pre-antibiotic-era-a-case-study-from-a-longobard-necropolis-6th-8th-centuries-ad
#16
Ileana Micarelli, Robert Paine, Caterina Giostra, Mary Anne Tafuri, Antonio Profico, Marco Boggioni, Fabio Di Vincenzo, Danilo Massani, Andrea Papini, Giorgio Manzi
The Longobard necropolis of Povegliano Veronese dates from the 6th to the 8th centuries AD. Among the 164 tombs excavated, the skeleton of an older male shows a well-healed amputated right forearm. The orientation of the forearm fracture suggests an angled cut by a single blow. Reasons why a forearm might be amputated include combat, medical intervention, and judicial punishment. As with other amputation cases reported in literature, this one exhibits both healing and osteoblastic response. We argue that the forelimb stump morphology suggests the use of a prosthesis...
April 10, 2018: Journal of Anthropological Sciences, Rivista di Antropologia: JASS
https://www.readbyqxmd.com/read/29664870/outcomes-of-anatomic-total-shoulder-arthroplasty-with-b2-glenoids-a-systematic-review
#17
Colten Luedke, Michael J Kissenberth, Stefan J Tolan, Richard J Hawkins, John M Tokish
BACKGROUND: Total shoulder arthroplasty remains an effective procedure for shoulder pain relief. Despite the negative effect of abnormal glenoid morphology and specifically retroverted and posteriorly subluxated glenoids, there is no consensus for management of B2 glenoids in total shoulder arthroplasty. The purpose of this study was to compare the outcomes and complication rates for B2 glenoid techniques so as to provide a baseline understanding of the current state of treatment of this pathology...
April 2018: JBJS Reviews
https://www.readbyqxmd.com/read/29625251/the-influence-of-temporomandibular-joint-movement-parameters-on-dental-morphology
#18
Luminita Oancea, Roxana Stegaroiu, Corina Marilena Cristache
Association between tooth morphology, occlusal relations and mandibular condyle/glenoid fossa morphology is still a controversial issue in dentistry. The aim of the present study was to examine the influence of three important articular parameters on the dental morphology and the crown volume, quantifying the variation for each tooth group: incisor, canine, premolar and molar. MATERIALS AND METHODS: All maxillary teeth from a set of basic study models were prepared for zirconia single crowns...
July 2018: Annals of Anatomy, Anatomischer Anzeiger: Official Organ of the Anatomische Gesellschaft
https://www.readbyqxmd.com/read/29605518/shoulder-arthroplasty-for-sequelae-of-obstetrical-brachial-plexus-injury
#19
Jean-David Werthel, Bradley Schoch, Mark Frankle, Robert Cofield, Bassem T Elhassan
PURPOSE: Shoulder arthroplasty following obstetrical brachial plexus injury (OBPI) is technically challenging because glenoid morphology, muscle balance, and humeral version are substantially altered compared with the neurologically intact shoulder. The purpose of this study is to report the outcome of shoulder arthroplasty in a group of patients with end-stage arthritis secondary to OBPI. MATERIALS AND METHODS: Seven patients with OBPI and secondary glenohumeral arthritis were treated with shoulder arthroplasty between 1976 and 2014...
September 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29580228/intra-and-interobserver-reliability-of-glenoid-fracture-classifications-by-ideberg-euler-and-ao
#20
F Gilbert, L Eden, R Meffert, F Konietschke, J Lotz, L Bauer, W Staab
BACKGROUND: Representing 3%-5% of shoulder girdle injuries scapula fractures are rare. Furthermore, approximately 1% of scapula fractures are intraarticularfractures of the glenoid fossa. Because of uncertain fracture morphology and limited experience, the treatment of glenoid fossa fractures is difficult. The glenoid fracture classification by Ideberg (1984) and Euler (1996) is still commonly used in literature. In 2013 a new glenoid fracture classification was introduced by the AO. The purpose of this study was to examine the new AO classification in clinical practice in comparison with the classifications by Ideberg and Euler...
March 27, 2018: BMC Musculoskeletal Disorders
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