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glenoid morphology

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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
#1
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...
August 10, 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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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...
May 2, 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
#8
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
#9
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
#10
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
#11
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...
March 29, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29580228/intra-and-interobserver-reliability-of-glenoid-fracture-classifications-by-ideberg-euler-and-ao
#12
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
https://www.readbyqxmd.com/read/29573902/computed-tomography-underestimates-rotator-cuff-pathology-in-patients-with-glenohumeral-osteoarthritis
#13
Megan Fitzgerald, Sarah M Lawler, Jeremiah T Lowe, Ryan Nelson, Matthew T Mantell, Andrew Jawa
BACKGROUND: Computed tomography (CT) is the standard assessment of glenoid morphology before shoulder arthroplasty and is commonly used to evaluate rotator cuff pathology in patients with glenohumeral osteoarthritis (GHOA). Magnetic resonance imaging (MRI) is not routinely used in this setting but has higher sensitivity in diagnosing full-thickness rotator cuff tears (RCT) and is considered the gold standard. The purpose of this study was to determine the sensitivity and specificity of CT in diagnosing full-thickness RCTs and compare the evaluation of fatty infiltration and muscle atrophy on CT vs...
August 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29509615/the-association-between-rotator-cuff-muscle-fatty-infiltration-and-glenoid-morphology-in-glenohumeral-osteoarthritis
#14
Kenneth W Donohue, Eric T Ricchetti, Jason C Ho, Joseph P Iannotti
BACKGROUND: Glenoid morphology and rotator cuff muscle quality are important anatomic factors that can impact longevity of the glenoid component following total shoulder arthroplasty (TSA). We hypothesized that rotator cuff muscle fatty infiltration is associated with increased pathologic glenoid bone loss in glenohumeral osteoarthritis (OA). METHODS: We retrospectively reviewed 190 preoperative computed tomography (CT) scans of 175 patients (mean age, 66 years; range, 44 to 90 years) who underwent TSA for the treatment of primary glenohumeral OA...
March 7, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29498981/anatomic-considerations-for-temporomandibular-joint-vascularized-composite-allotransplantation
#15
Nima Khavanin, Edward H Davidson, Diana Y Lee, Patrick Byrne, Amir H Dorafshar
Concomitant temporomandibular joint (TMJ) transplantation is an obvious advancement in the reconstructive armamentarium for face transplantation in scenarios involving TMJ ankylosis. This study investigates the fidelity of mandibular morphology and explores the feasibility of bilateral mandibular condyle transfer in facial vascularized composite allotransplantation. Geometric analysis was performed on 100 skeletally mature maxillofacial computed tomography scans. Exclusion criteria included mandibular trauma and dentoalveolar disease...
June 2018: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/29402729/radiologic-correlation-between-the-thickness-of-the-roof-of-the-glenoid-fossa-and-that-of-the-bony-covering-of-the-superior-semicircular-canal
#16
Rafael Crovetto-Martínez, Carlos Vargas, Iñigo Lecumberri, Amaia Bilbao, Miguel Crovetto-De la Torre, Jaime Whyte-Orozco
OBJECTIVES: Dehiscence of the superior semicircular canal (SSC) has been associated with alteration of the temporomandibular joint, although data explaining this association are lacking. The present study examined the correlations between the presence of dehiscences and thickness of the bone covering the SSC and the roof of the glenoid fossa (RGF). STUDY DESIGN: Computed tomography was used in a cross-sectional analysis of the presence of dehiscences and thickness of the bone overlying the SCC and RGF in 156 temporal bones of 78 patients...
April 2018: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/29399452/reverse-total-shoulder-arthroplasty-with-humeral-head-autograft-fixed-onto-glenoid-for-treatment-of-severe-glenoid-retroversion
#17
Zaamin B Hussain, Jonathan A Godin, George Sanchez, Nicholas I Kennedy, Mark E Cinque, Márcio B Ferrari, Matthew T Provencher
Advanced glenohumeral osteoarthritis can transform glenoid morphology and, in some cases, is found in association with severe glenoid retroversion. The associated glenoid retroversion leads to difficulty in fixation of the glenoid component in reverse total shoulder arthroplasty. In the context of extreme glenoid wear, structural grafts can be used to restore glenoid volume and version in order for the glenoid component of the reverse total shoulder arthroplasty to be more easily implanted. Nevertheless, literature regarding structural grafts remains limited, with optimal graft choice and technique still controversial at best...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29392730/three-dimensional-mobility-and-muscle-attachments-in-the-pectoral-limb-of-the-triassic-cynodont-massetognathus-pascuali-romer-1967
#18
Phil H Lai, Andrew A Biewener, Stephanie E Pierce
The musculoskeletal configuration of the mammalian pectoral limb has been heralded as a key anatomical feature leading to the adaptive radiation of mammals, but limb function in the non-mammaliaform cynodont outgroup remains unresolved. Conflicting reconstructions of abducted and adducted posture are based on mutually incompatible interpretations of ambiguous osteology. We reconstruct the pectoral limb of the Triassic non-mammaliaform cynodont Massetognathus pascuali in three dimensions, by combining skeletal morphology from micro-computed tomography with muscle anatomy from an extended extant phylogenetic bracket...
March 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29350537/cartilage-morphological-and-histological-findings-after-reconstruction-of-the-glenoid-with-an-iliac-crest-bone-graft
#19
Alexander Auffarth, Herbert Resch, Nicholas Matis, Martin Hudelmaier, Wolfgang Wirth, Rosemarie Forstner, Daniel Neureiter, Andreas Traweger, Philipp Moroder
BACKGROUND: The J-bone graft is presumably representative of iliac crest bone grafts in general and allows anatomic glenoid reconstruction in cases of bone defects due to recurrent traumatic anterior shoulder dislocations. As a side effect, these grafts have been observed to be covered by some soft, cartilage-like tissue when arthroscopy has been indicated after such procedures. PURPOSE: To evaluate the soft tissue covering of J-bone grafts by use of magnetic resonance imaging (MRI) and histological analysis...
April 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29298260/progression-of-glenoid-morphology-in-glenohumeral-osteoarthritis
#20
Kyle E Walker, Xavier C Simcock, Bong Jae Jun, Joseph P Iannotti, Eric T Ricchetti
BACKGROUND: Walch defined the pathologic characteristics of glenohumeral osteoarthritis on the basis of patterns of glenoid morphology and humeral head subluxation. However, it is unclear how pathologic changes evolve over time. The purpose of this study was to determine whether there are common patterns of pathologic progression based on the Walch classification in primary glenohumeral osteoarthritis and if glenoid bone-loss patterns correlate with rotator cuff fatty infiltration. METHODS: A retrospective chart review identified 65 shoulders with glenohumeral osteoarthritis for which at least 2 computed tomography (CT) scans had been performed at least 24 months apart...
January 3, 2018: Journal of Bone and Joint Surgery. American Volume
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