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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
https://www.readbyqxmd.com/read/28861389/cone-beam-computed-tomographic-evaluation-of-the-temporomandibular-joint-and-dental-characteristics-of-patients-with-class-ii-subdivision-malocclusion-and-asymmetry
#10
Mingna Huang, Yun Hu, Jinfeng Yu, Jicheng Sun, Ye Ming, Leilei Zheng
OBJECTIVE: Treating Class II subdivision malocclusion with asymmetry has been a challenge for orthodontists because of the complicated characteristics of asymmetry. This study aimed to explore the characteristics of dental and skeletal asymmetry in Class II subdivision malocclusion, and to assess the relationship between the condyle-glenoid fossa and first molar. METHODS: Cone-beam computed tomographic images of 32 patients with Class II subdivision malocclusion were three-dimensionally reconstructed using the Mimics software...
September 2017: Korean Journal of Orthodontics
https://www.readbyqxmd.com/read/28861201/arthroscopic-evaluation-of-subluxation-of-the-long-head-of-the-biceps-tendon-and-its-relationship-with-subscapularis-tears
#11
Kyoung-Hwan Koh, Su Cheol Kim, Jae Chul Yoo
BACKGROUND: The purpose of this study was to evaluate the angle between the long head of the biceps tendon (LHBT) and the glenoid during arthroscopic surgery and its correlation with biceps subluxation on magnetic resonance imaging (MRI). Furthermore, we evaluated the relationship of this angle with subscapularis tears and biceps pathologies. METHODS: MRI and arthroscopic images of 270 consecutive patients who had undergone arthroscopic surgery were retrospectively evaluated...
September 2017: Clinics in Orthopedic Surgery
https://www.readbyqxmd.com/read/28794582/what-are-the-anatomical-predictive-factors-of-degenerative-superior-labrum-anterior-to-posterior-lesion-in-rotator-cuff-tear
#12
Joong-Bae Seo, Jae-Sung Yoo, Joon-Yeul Lee, Kyoo-Hong Han
The purpose of this study was to evaluate the influence of anatomical factors degenerative superior labrum anterior to posterior lesion in rotator cuff tear. The study included 421 middle-aged patients treated using arthroscopic surgery for rotator cuff tears. Patients were divided into two groups based on the superior labrum anterior-to-posterior (SLAP). Glenoid inclination, glenoid length, humeral head diameter, acromio-humeral distance (AHD) head-glenoid difference (HGD), head glenoid angle (HGA), size and retraction of rotator cuff tears were evaluated in both groups...
December 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28763415/clinical-and-radiographic-outcomes-of-the-ream-and-run-procedure-for-primary-glenohumeral-arthritis
#13
Jeremy S Somerson, Moni B Neradilek, Benjamin C Service, Jason E Hsu, Stacy M Russ, Frederick A Matsen
BACKGROUND: The ream-and-run procedure can provide improvement in shoulder function and comfort for selected patients with primary glenohumeral arthritis who wish to avoid a prosthetic glenoid component. The purpose of this study was to evaluate factors associated with medialization of the humeral head after this procedure as well as the relationship of medialization to the clinical outcome. METHODS: We collected patient, shoulder, and procedure characteristics along with Simple Shoulder Test (SST) scores before surgery and at the time of follow-up...
August 2, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28735842/angled-bio-rsa-bony-increased-offset-reverse-shoulder-arthroplasty-a-solution-for-the-management-glenoid-bone-loss-and-erosion
#14
Pascal Boileau, Nicolas Morin-Salvo, Marc-Olivier Gauci, Brian L Seeto, Peter N Chalmers, Nicolas Holzer, Gilles Walch
BACKGROUND: Glenoid deficiency and erosion (excessive retroversion/inclination) must be corrected in reverse shoulder arthroplasty (RSA) to avoid prosthetic notching or instability and to maximize function, range of motion, and prosthesis longevity. This study reports the results of RSA with an angled, autologous glenoid graft harvested from the humerus (angled BIO-RSA). METHODS: A trapezoidal bone graft, harvested from the humerus and fixed with a long-post baseplate and screws, was used to compensate for residual glenoid bone loss/erosion...
July 20, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28689820/reverse-total-shoulder-glenoid-baseplate-stability-with-superior-glenoid-bone-loss
#15
Elise J Martin, Thomas R Duquin, Mark T Ehrensberger
BACKGROUND: Superior wear of the glenoid bone is common in patients with rotator cuff arthropathy. This can become a treatment challenge for patients who require shoulder arthroplasty. In reverse shoulder arthroplasty (RSA), glenoid bone loss may affect the stability of baseplate fixation. The primary purpose of this biomechanical laboratory study was to assess the initial fixation stability of RSA glenosphere baseplates in the presence of variable amounts of superior glenoid bone loss...
July 6, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28658583/risk-of-engagement-of-bipolar-bone-defects-in-posterior-shoulder-instability
#16
Philipp Moroder, Fabian Plachel, Mark Tauber, Peter Habermeyer, Andreas Imhoff, Dennis Liem, Helmut Lill, Herbert Resch, Christian Gerhardt, Markus Scheibel
BACKGROUND: The risk of re-engagement of bipolar bone defects in posterior shoulder instability has not yet been investigated. HYPOTHESIS: Posterior glenoid defects can lead to the engagement of supposedly noncritical reverse Hill-Sachs lesions (RHSLs). STUDY DESIGN: Descriptive laboratory study. METHODS: In a retrospective multicenter study, 102 cases of posterior shoulder dislocations and resulting RHSLs were collected...
October 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28630752/acromion-and-glenoid-shape-why-are-they-important-predictive-factors-for-the-future-of-our-shoulders
#17
Richard W Nyffeler, Dominik C Meyer
The shape of the acromion differs between patients with degenerative rotator cuff tears and individuals without rotator cuff pathology.It can be assessed in the sagittal plane (acromion type, acromion slope) and in the coronal plane (lateral acromion angle, acromion index, critical shoulder angle).The inter-observer reliability is better for the measurements in the coronal plane.A large lateral extension (high acromion index or high critical shoulder angle) and a lateral down-sloping of the acromion (low lateral acromion angle) are associated with full-thickness supraspinatus tears...
May 2017: EFORT open reviews
https://www.readbyqxmd.com/read/28602259/assessment-of-condyle-position-fossa-morphology-and-disk-displacement-in-symptomatic-patients
#18
Katharina Alves Rabelo, Saulo Leonardo Sousa Melo, Marianna Guanaes Gomes Torres, Larissa Rangel Peixoto, Paulo Sérgio Flores Campos, Iêda Margarida Crusoé Rocha Rebello, Daniela Pita de Melo
OBJECTIVE: The aim of the study was to determine whether there are any associations between the morphology of the glenoid fossa, articular spaces, and disk displacement by evaluating the magnetic resonance imaging (MRI) scans of symptomatic patients. Gender and age were also evaluated for any effect on the parameters. STUDY DESIGN: MRI scans of 199 temporomandibular joints were assessed for the morphology of the glenoid fossa and articular spaces in both sagittal and coronal views...
April 19, 2017: Oral Surgery, Oral Medicine, Oral Pathology and Oral Radiology
https://www.readbyqxmd.com/read/28600884/physiological-effects-of-anterior-repositioning-splint-on-temporomandibular-joint-disc-displacement-a-quantitative-analysis
#19
H-M Chen, M-Q Liu, A U-J Yap, K-Y Fu
Anterior repositioning splints (ARS) are used primarily for the management of temporomandibular joint (TMJ) anterior disc displacement with reduction (ADDwR). However, the exact physiological effects of ARS are still unclear. This study investigated the short and long-term effects of ARS on disc and condyle angles/positions by metric analysis. Twenty-two subjects diagnosed with ADDwR were recruited. Maxillary full-coverage ARS were fabricated, and MRI of TMJs was obtained before splint treatment, immediate post-insertion and 6 months after splint treatment...
September 2017: Journal of Oral Rehabilitation
https://www.readbyqxmd.com/read/28576698/impact-of-shoulder-rotation-on-neck-shaft-angle-a-clinical-study
#20
J H Assunção, E A Malavolta, R A Beraldo, M E C Gracitelli, M Bordalo-Rodrigues, A A Ferreira Neto
BACKGROUND: Two recent experimental studies evaluated the influence of shoulder rotation on neck-shaft angle, with conflicting results. However, there have been no clinical studies of whether this angle varies in different shoulder positions. The present study aimed to determine whether shoulder rotation affects neck-shaft angle on standard radiographs in patients with complaints of shoulder pain. HYPOTHESIS: Shoulder rotation does not affect neck-shaft angle. MATERIALS AND METHODS: A prospective study was conducted in selected patients with shoulder pain...
May 30, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
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