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https://www.readbyqxmd.com/read/29444577/classification-of-scapular-body-fractures
#1
J Bartonicek, D Klika, M Tucek
INTRODUCTION: The aim of this study is to present, on the basis of 3D CT reconstructions of 187 of scapular body fractures, a clinically oriented classification respecting the biomechanical architecture of the scapula. METHODS: In a series of 375 scapula fractures we identified 187 body fractures in187 patients (157 men, 30 women) with the mean age of 48 years (range; 16100 years). 3D CT reconstructions were obtainedof all fractures, to allow an objective evaluation of the fracture pattern...
2018: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/29430140/an-in-vitro-study-to-evaluate-the-accuracy-of-orthopantomograph-as-an-aid-to-determine-condylar-guidance
#2
Sukhjit Kaur, Kusum Datta
Purpose: The study was conducted to evaluate the accuracy of orthopantomograph (OPG) as an aid to determine condylar guidance. Methodology: The condylar guidance was measured using the impressions of glenoid fossae and radiographs (OPG) on thirty dried human skulls. Frankfurt horizontal plane (FHP) was used as a reference plane in both the methods and wire markers were adapted to make the contours of glenoid fossae discernible for both the methods. The condylar inclination angle was measured between FHP and a line joining the most concave point on the glenoid fossa with the most inferior point on the articular eminence on both right and left sides...
January 2018: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29430137/a-clinico-radiographic-study-to-compare-and-co-relate-sagittal-condylar-guidance-determined-by-intraoral-gothic-arch-tracing-method-and-panoramic-radiograph-in-completely-edentulous-patients
#3
Sanath Shetty, Mythili Kunta, Kamalakanth Shenoy
Purpose: The purpose of this study was to compare and correlate sagittal condylar guidance determined by intraoral gothic arch tracing method and panoramic radiograph in edentulous patients. Materials and Methods: Twelve completely edentulous patients were selected by the inclusion and exclusion criteria. Conventional steps in the fabrication of complete denture till jaw relation were carried out. Intraoral gothic arch tracing and protrusive interocclusal records were obtained for each patient...
January 2018: Journal of Indian Prosthodontic Society
https://www.readbyqxmd.com/read/29426741/lower-shoulder-abduction-during-throwing-motion-may-cause-forceful-internal-impingement-and-decreased-anterior-stability
#4
Masaki Akeda, Teruhisa Mihata, Woong Kyo Jeong, Michelle H McGarry, Tetsuya Yamazaki, Thay Q Lee
BACKGROUND: Internal impingement and decreased anterior stability, which result from shoulder capsular loosening, are common shoulder pathologies in throwing athletes. The purpose of this study was to assess the effect of shoulder abduction angle on shoulder internal impingement and anterior shoulder stability during the simulated throwing motion. METHODS: Eight cadaveric shoulders were tested by simulating the late-cocking and acceleration phases of the throwing motion for intact and thrower's shoulder conditions...
February 7, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29399445/arthroscopic-lateral-border-resection-in-medialized-scapula-neck-fractures
#5
Valentin Rausch, Matthias Königshausen, Thomas A Schildhauer, Dominik Seybold, Jan Gessmann
Scapula neck fractures are rare injuries, leaving several treatment options. Standardized markers for operative treatment are a decreased glenopolar angle ≤22°, lateral border offset (LBO) of the glenoid ≥20 mm, angular deformity ≥45°, or LBO ≥15 mm plus angular deformity ≥35°. If operative treatment is not performed before union, the fracture heals malaligned with possible mechanical complications due to a medialized glenoid and the protruding lateral border. Common operative treatment comprises a corrective osteotomy for the anatomic correction of the malunited fracture, leaving intra-articular pathologies like adhesive capsular stiffness unaddressed...
October 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29354408/arthroscopic-repair-of-a-circumferential-360%C3%A2-labral-tear
#6
Allison J Rao, Gregory L Cvetanovich, William A Zuke, Quentin Low, Brian Forsythe
Injuries to the glenoid labrum can result in shoulder instability and pain. These lesions may occur anywhere around the glenoid labrum, and thus, the arthroscopist must be prepared to approach all aspects of the glenoid from multiple angles. The pan-labral or circumferential (360°) tear of the glenoid labrum presents a unique challenge to even the experienced arthroscopist. The extent of the lesion requires the use of accessory portals and percutaneous techniques to establish adequate visualization and to facilitate the proper trajectory for anchor placement...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29332666/optimizing-reverse-shoulder-arthroplasty-component-position-in-the-setting-of-advanced-arthritis-with-posterior-glenoid-erosion-a-computer-enhanced-range-of-motion-analysis
#7
Jay D Keener, Brendan M Patterson, Nathan Orvets, Alexander W Aleem, Aaron M Chamberlain
BACKGROUND: Our study purpose was to determine the optimal glenoid and humeral reverse shoulder arthroplasty (RSA) component design and position in osteoarthritic shoulders with severe glenoid retroversion deformities. METHODS: Computed tomography scans from 10 subjects were analyzed with advanced software including RSA range of motion (ROM) analysis. Variables included glenoid component retroversion of 0°, 5°, 10°, 15°, and 20° and baseplate lateralization of 0, 5, and 10 mm...
February 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29299654/comparative-study-of-open-and-arthroscopic-coracoid-transfer-for-shoulder-anterior-instability-latarjet-computed-tomography-evaluation-at-a-short-term-follow-up-part-ii
#8
Bartłomiej Kordasiewicz, Maciej Kicinski, Konrad Małachowski, Janusz Wieczorek, Sławomir Chaberek, Stanisław Pomianowski
PURPOSE AND HYPOTHESIS: The aim of this study was to evaluate and to compare the radiological parameters after arthroscopic and open Latarjet technique via evaluation of computed tomography (CT) scans. Our hypothesis was that the radiological results after arthroscopic stabilisation remained in the proximity of those results achieved after open stabilisation. MATERIAL AND METHODS: CT scan evaluation results of patients after primary Latarjet procedure were analysed...
January 4, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29298261/automated-three-dimensional-measurement-of-glenoid-version-and-inclination-in-arthritic-shoulders
#9
Pascal Boileau, Damien Cheval, Marc-Olivier Gauci, Nicolas Holzer, Jean Chaoui, Gilles Walch
BACKGROUND: Preoperative computed tomography (CT) measurements of glenoid version and inclination are recommended for planning glenoid implantation in shoulder arthroplasty. However, current manual or semi-automated 2-dimensional (2D) and 3-dimensional (3D) methods are user-dependent and time-consuming. We assessed whether the use of a 3D automated method is accurate and reliable to measure glenoid version and inclination in osteoarthritic shoulders. METHODS: CT scans of osteoarthritic shoulders of 60 patients scheduled for shoulder arthroplasty were obtained...
January 3, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29244216/relationship-between-glenoid-deformity-and-gait-characteristics-in-a-rat-model-of-neonatal-brachial-plexus-injury
#10
Kelsey Hennen, Dustin L Crouch, Ian D Hutchinson, Zhongyu Li, Katherine Saul
Neonatal brachial plexus injury (NBPI) results in substantial postural and functional impairments associated with underlying muscular and osseous deformities. We examined the relationship between glenoid deformity severity and gait in a rat model of NBPI, an established model for studying the in vivo pathomechanics of NBPI. At 8 weeks post-operatively, we monitored the gait of twenty-four rat pups who exhibited varying degrees of glenoid deformity following unilateral brachial plexus neurectomy and chemodenervation interventions administered 5 days postnatal...
December 15, 2017: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/29241661/glenoid-component-loosening-associated-with-increased-critical-shoulder-angle-at-midterm-follow-up
#11
Jonathan P Watling, Javier E Sanchez, Samuel P Heilbroner, William N Levine, Louis U Bigliani, Charles M Jobin
BACKGROUND: Glenoid component loosening is a common failure mode of total shoulder arthroplasty (TSA). A larger critical shoulder angle (CSA) may cause superior glenoid component loading and more rapid component loosening. The purpose of this study was to define the relationship between the CSA and glenoid component loosening in midterm follow-up after TSA. METHODS: We conducted a retrospective study of 61 primary TSAs for osteoarthritis with an average follow-up of 5...
December 11, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29113176/stereolithographic-model-assisted-reconstruction-of-the-mandibular-condyle-with-a-vascularized-fibular-flap-following-hemimandibulectomy-evaluation-of-morphological-and-functional-outcomes
#12
Hitoshi Yoshimura, Shinpei Matsuda, Seigo Ohba, Yoshiki Minegishi, Kunihiro Nakai, Shigeharu Fujieda, Kazuo Sano
The vascularized fibular flap is one of the standard treatment choices for the reconstruction of the mandible; however, the consequences of condylar restoration have not previously been reported. The use of three-dimensional models allows for a more predictable reconstruction. The purpose of the present study was to assess the outcome of stereolithographic model-assisted reconstruction of the mandibular condyle with a vascularized fibular flap. A total of 5 patients underwent mandibular resection including the condyle and immediate reconstruction with a vascularized fibular flap...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29100764/arthroscopic-versus-open-iliac-crest-bone-grafting-in-recurrent-anterior-shoulder-instability-with-glenoid-bone-loss-a-computed-tomography-based-quantitative-assessment
#13
Lukas Ernstbrunner, Fabian Plachel, Philipp Heuberer, Leo Pauzenberger, Philipp Moroder, Herbert Resch, Werner Anderl
PURPOSE: To assess the iliac crest bone graft (ICBG) position in the en-face view and axial plane comparing arthroscopic with open procedures. METHODS: A total of 40 consecutive patients with recurrent anterior shoulder instability and glenoid bone loss over 10% treated by 2 independent orthopaedic departments were included. Two independent observers analyzed preoperative and immediate postoperative computed tomography scans of 20 open (group O) and 20 arthroscopic (group A) procedures...
October 31, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29094054/can-a-drill-guide-improve-the-coracoid-graft-placement-during-the-latarjet-procedure-a-prospective-comparative-study-with-the-freehand-technique
#14
Johannes Barth, Achilleas Boutsiadis, Lionel Neyton, Laurent Lafosse, Gilles Walch
Background: One of the factors that can affect the success of the Latarjet procedure is accurate coracoid graft (CG) placement. Hypothesis: The use of a guide can improve placement of the CG and screw positioning in the sagittal and axial planes as compared with the classic open ("freehand") technique. Study Design: Cohort study; Level of evidence, 2. Methods: A total of 49 patients who underwent a Latarjet procedure for the treatment of recurrent anterior shoulder instability were prospectively included; the procedure was performed with the freehand technique in 22 patients (group 1) and with use of a parallel drill guide during screw placement in 27 patients (group 2)...
October 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29094010/restoration-of-the-joint-geometry-and-outcome-after-stemless-tess-shoulder-arthroplasty
#15
Lars V von Engelhardt, Michael Manzke, Andreas Breil-Wirth, Timm J Filler, Joerg Jerosch
AIM: To evaluate the joint geometry and the clinical outcome of stemless, anatomical shoulder arthroplasty with the TESS system. METHODS: Twenty-one shoulders with a mean follow-up 18 of months were included. On scaled digital radiographs the premorbid center of rotation (CoR) was assessed and compared to the CoR of the prosthesis by using the MediCAD(®) software. Additionally, the pre- and post-operative geometry of the CoR was assessed in relation to the glenoid, the acromion as well as to the proximal humerus...
October 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29063152/bone-grafts-used-for-arthroscopic-glenoid-reconstruction-restore-the-native-glenoid-anatomy
#16
Benjamin Bockmann, Arne Johannes Venjakob, Rolf Gebing, Frank Reichwein, Marthe Hagenacker, Wolfgang Nebelung
PURPOSE: Recurrent anterior instability of the glenohumeral joint is a demanding condition, especially in cases of glenoid bone loss. Various treatment options have been described, such as arthroscopic grafting techniques and the Latarjet procedure. In this study, the degree to which an arthroscopically applied iliac crest graft restores the glenoid anatomy was evalutated. METHODS: Nine patients (three women and six men) with an average age of 31 ± 9 years (21-46 years) who were treated with an arthroscopic iliac crest graft technique were included in this study...
October 23, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28948516/version-correction-via-eccentric-reaming-compromises-remaining-bone-quality-in-b2-glenoids-a-computational-study
#17
Xiang Chen, Akhil S Reddy, Andreas Kontaxis, Daniel S Choi, Timothy Wright, David M Dines, Russell F Warren, Julien Berhouet, Lawrence V Gulotta
BACKGROUND: Version correction via eccentric reaming reduces clinically important retroversion in Walch type B2 glenoids (those with substantial glenoid retroversion and a second, sclerotic neoglenoid cavity) before total shoulder arthroplasty (TSA). Clinically, an increased risk of glenoid component loosening in B2 glenoids was hypothesized to be the result of compromised glenoid bone quality attributable to eccentric reaming. However, no established guidelines exist regarding how much version correction can be applied without compromising the quality of glenoid bone...
December 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28945134/three-dimensional-assessment-of-curvature-torsion-and-canal-flare-index-of-the-humerus-of-skeletally-mature-nonchondrodystrophic-dogs
#18
Emily J Smith, Denis J Marcellin-Little, Ola L A Harrysson, Emily H Griffith
OBJECTIVE To assess 3-D geometry of the humerus of dogs and determine whether the craniocaudal canal flare index (CFI) is associated with specific geometric features. SAMPLE CT images (n = 40) and radiographs (38) for 2 groups of skeletally mature nonchondrodystrophic dogs. PROCEDURES General dimensions (length, CFI, cortical thickness, and humeral head offset), curvature (shaft, humeral head, and glenoid cavity), version (humeral head and greater tubercle), and torsion were evaluated on CT images. Dogs were allocated into 3 groups on the basis of the craniocaudal CFI, and results were compared among these 3 groups...
October 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28938332/mandibular-condyle-reconstruction-with-fibula-free-tissue-transfer-the-role-of-the-masseter-muscle
#19
Andreas Gravvanis, Dimitrios Anterriotis, Despoina Kakagia
BACKGROUND: Free fibula flap is an option for primary restoration after disarticulation mandibular resection, though literature on technique refinements is scarce. The authors hypothesized that inset of the masseter, the key mandibular elevator muscle, at the reconstructed mandible may optimize functional recovery. METHODS: All patients undergoing reconstruction of mandibulectomy-condylectomy defect (January 2009 to January 2014) by means of a fibular flap were prospectively studied...
November 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28894931/radiographic-evaluation-of-condylar-positioning-in-patients-undergoing-orthognathic-surgery
#20
Wanderley da Silva Félix Junior, Leandro Eduardo Klüppel, Delson João da Costa, Ângela Fernandes, Rafaela Scariot, Nelson Luis Barbosa Rebellato
OBJECTIVE: The aim of this study was to evaluate alterations in condylar positioning through submentovertex projection (Hirtz Radiographic Technique) in patients who underwent orthognathic surgery for maxillary advancement and mandibular setback with stable internal fixation. METHODS: A prospective longitudinal clinical study of 40 surgical patients presenting dentofacial deformity admitted in the Oral and Maxillofacial Surgery Department of Federal University of Paraná (UFPR) in the period between March 2013 and December 2015...
December 2017: Oral and Maxillofacial Surgery
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