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https://www.readbyqxmd.com/read/28727652/surgical-emphysema-following-canalplasty-for-aural-exostoses
#1
Michael C Baxter, Matthew Keller, Anil Shah, Sean Wise
OBJECTIVE: To describe the presentation and management of surgical emphysema involving the temporomandibular joint and deep neck following exostoses removal. PATIENT: A 60-year-old male surfer presented with hearing loss and recurrent infections in the right ear. An examination revealed obstructing bony exostoses in the right external auditory canal. He underwent right canalplasty using a postauricular approach. At 5 weeks after surgery, he presented with right otalgia, swelling of the right face and neck, and complaints of a squeaking noise in the right ear with mandibular excursions...
July 19, 2017: Otology & Neurotology
https://www.readbyqxmd.com/read/28717635/the-fabrication-of-a-customized-occlusal-splint-based-on-the-merging-of-dynamic-jaw-tracking-records-cone-beam-computed-tomography-and-cad-cam-digital-impression
#2
Katerina Aslanidou, Chung How Kau, Christos Vlachos, Tayem Abou Saleh
OBJECTIVES: The aim of this case report was to present the procedure of fabricating a customized occlusal splint, through a revolutionary software that combines cone beam computed tomography (CBCT) with jaw motion tracking (JMT) data and superimposes a digital impression. MATERIALS AND METHODS: The case report was conducted on a 46-year-old female patient diagnosed with the temporomandibular disorder. A CBCT scan and an optical impression were obtained. The range of the patient's mandibular movements was captured with a JMT device...
July 2017: Journal of Orthodontic Science
https://www.readbyqxmd.com/read/28717608/computerized-tomographic-assessment-and-clinical-evaluation-in-shoulder-instability-treated-with-the-latarjet-patte-procedure-using-one-screw-and-washer
#3
Fabio Cautiero, Raffaele Russo, Francesco Di Pietto, Giuseppe Sabino
BACKGROUND: The Latarjet-Patte (L-P) procedure is indicated in anterior instability of the shoulder with a glenoid or humeral bone loss. Our purpose is to evaluate clinical outcome and computerized tomographic (CT) findings as position and resorption of the graft and articular degeneration. METHODS: From 2006 to 2009 50 patients underwent to L-P, 48 was contacted by telephone and 26 were available for follow-up (3 to 6 years). Quick-DASH and Rowe scores was used, 22 patients perform CT...
January 2017: Muscles, Ligaments and Tendons Journal
https://www.readbyqxmd.com/read/28715302/characterization-of-humeral-head-displacements-during-dynamic-glenohumeral-neuromuscular-control-exercises-using-quantitative-ultrasound-imaging-a-feasibility-study
#4
Guillaume Desroches, François Desmeules, Dany H Gagnon
The objectives of the present study were to test the feasibility of measuring humeral head displacements using quantitative ultrasound imaging during the performance of two different dynamic glenohumeral neuromuscular control exercises and to investigate the influence of these exercises on the acromiohumeral distance (AHD) and anterior-posterior distance (APD). Ten individuals who have no history of shoulder injury at the non-dominant shoulder completed three repetitions of an active humeral head lowering exercise and three repetitions of a posteriorisation exercise in a random order in a seated position...
June 2017: Musculoskeletal Science & Practice
https://www.readbyqxmd.com/read/28711169/the-risk-of-suprascapular-and-axillary-nerve-injury-in-reverse-total-shoulder-arthroplasty-an-anatomic-study
#5
Tim Leschinger, Michael Hackl, Eduard Buess, Sebastian Lappen, Martin Scaal, Lars Peter Müller, Kilian Wegmann
PURPOSE: Implantation of a reverse total shoulder arthroplasty (rTSA) places the axillary and suprascapular nerves at risk. The aim of this anatomic study was to digitally analyse the location of these nerves in relation to bony landmarks in order to predict their path and thereby help to reduce the risk of neurological complications during the procedure. METHODS: A total of 22 human cadaveric shoulder specimens were used in this study. The axillary and suprascapular nerves were dissected, and radiopaque threads were sutured onto the nerves without mobilizing the nerves from their native paths...
June 28, 2017: Injury
https://www.readbyqxmd.com/read/28710344/position-of-immobilization-after-first-time-traumatic-anterior-glenohumeral-dislocation-a-literature-review
#6
Olga Gutkowska, Jacek Martynkiewicz, Jerzy Gosk
Anterior glenohumeral dislocation affects about 2% of the general population during the lifetime. The incidence of traumatic glenohumeral dislocation ranges from 8.2 to 26.69 per 100 000 population per year. The most common complication is recurrent dislocation occurring in 17-96% of the patients. The majority of patients are treated conservatively by closed reduction and immobilization in internal rotation for 2-3 weeks. However, no clear conservative treatment protocol exists. Immobilization in external rotation can be considered an alternative...
July 15, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28706848/bipolar-bone-loss-of-the-shoulder-joint-due-to-recurrent-instability-use-of-fresh-osteochondral-distal-tibia-and-humeral-head-allografts
#7
Daniel B Haber, Anthony Sanchez, George Sanchez, Marcio B Ferrari, Sami Ferdousian, Matthew T Provencher
With increasing shoulder instability events, the likelihood of a bony lesion of the glenoid and/or humeral head rises. Although bone loss of either the glenoid or humeral head may result in recurrent instability, bipolar lesions have been shown, in particular, to result in a negative and additive effect on glenohumeral stability. In the case of a bipolar lesion comprising severe glenoid bone loss and an engaging, "off-track" Hill-Sachs lesion, the bony foundation of the glenohumeral joint is compromised and bony augmentation is necessary...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706846/arthroscopic-reduction-and-fixation-of-transverse-intra-articular-glenoid-fractures-with-scapular-extension
#8
Anastasios Papadonikolakis
The most common procedure to address transverse glenoid fractures that are characterized by intra-articular step-off or gapping is open reduction and internal fixation. Disadvantages of open surgery are delay in regaining full range of motion, increased approach morbidity, neurovascular complications, and the need for capsulotomy, which delays healing and increases the risk of stiffness. An arthroscopically assisted fracture fixation, as described in this article, is characterized by better visualization of the glenoid articular surface and reduction of the intra-articular fragments under direct vision, which diminishes the chances of residual step-off after fixation...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706833/latarjet-technique-for-treatment-of-anterior-shoulder-instability-with-glenoid-bone-loss
#9
Kevin J McHale, George Sanchez, Kyle P Lavery, William H Rossy, Anthony Sanchez, Marcio B Ferrari, Matthew T Provencher
Anterior glenohumeral instability is a common clinical entity, particularly among young athletic patient populations. Nonoperative management and arthroscopic treatment of glenohumeral instability have been associated with high rates of recurrence, particularly in the setting of glenohumeral osseous defects. Coracoid transfer, particularly the Latarjet procedure, has become the treatment of choice for recurrent anterior glenohumeral instability in the setting of osseous deficiencies greater than 20% to 30% of the glenoid surface area and may also be considered for the primary treatment of recurrent instability in the high-risk contact athlete, even in the setting of limited osseous deficiency...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706818/arthroscopic-repair-of-posterior-bony-bankart-lesion-and-subscapularis-remplissage
#10
Colten Luedke, Stefan J Tolan, John M Tokish
Posterior shoulder instability with glenoid bone loss has only a fraction of the prevalence of anterior instability. Unlike the latter, there is a paucity of literature regarding the treatment of posterior bony Bankart lesions and even less with concomitant reverse Hill-Sachs lesions. This combination of pathology leads to a difficult situation regarding treatment options. We present our technique for arthroscopic repair of a posterior bony Bankart lesion and reverse Hill-Sachs lesion. The importance of proper portal placement cannot be overstated...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28706796/arthroscopic-removal-of-a-loose-polyethylene-glenoid-component-with-bone-grafting-and-patch-augmentation-for-glenoid-osseous-defect
#11
Jeffrey T Abildgaard, Jared C Bentley, Richard J Hawkins, John M Tokish
Glenoid component loosening is a common cause of failed total shoulder arthroplasty. Many different treatment options exist for the management of a symptomatic loose polyethylene glenoid component, ranging from component removal to revision arthroplasty. Arthroscopic removal and conversion to hemiarthroplasty provides a minimally invasive management option that avoids takedown of the subscapularis and allows for humeral prosthesis retention. Frequently, however, osteolysis is encountered concomitantly leading to cavitary glenoid bone deficits at the time of glenoid implant removal, limiting both immediate and future treatment options...
June 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28705649/a-new-approach-for-endoscopicneurolysis-of-the-supra-scapular-nerve-at-the-spinoglenoidnotch-a-preliminary-cadaver-study
#12
Marc-Alexandre Loirat, Maxime Tierny, Anthony Hervé, Arthur Lignel, Eric Berton, Mickaël Ropars, Hervé Thomazeau
INTRODUCTION: The suprascapular nerve (SSN) can become compressedatits 2 scapularattachments: the suprascapular and the spinoglenoid notch. The objective of this study was to describe a new arthroscopicapproach for SSN neurolysis at the spinoglenoid notch. METHOD: 10 cadaver shoulderswereused. Two weredissected to simulate the "classical" arthroscopic approach and to help in the creation of a new "direct medial retrospinal" approach. Eight othershoulders were used to validatethis new approach, with control of the whole juxta-glenoidcourse of the SSN as criterion of success...
July 10, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28699147/what-are-the-complications-survival-and-outcomes-after-revision-to-reverse-shoulder-arthroplasty-in-patients-older-than-80-years
#13
Eduard Alentorn-Geli, Nicholas J Clark, Andrew T Assenmacher, Brian T Samuelsen, Joaquín Sánchez-Sotelo, Robert H Cofield, John W Sperling
BACKGROUND: By the time patients with a failed shoulder arthroplasty require revision surgery, a substantial number are older than 80 years. The risk of complications of revision arthroplasty in this elderly population is largely unknown and needs to be considered when contemplating whether these patients are too frail for revision surgery. QUESTIONS/PURPOSES: (1) What are the 90-day medical and surgical complications after revision to reverse shoulder arthroplasty (RSA) in patients older than 80 years? (2) What are the 2- and 5-year survival rates after revision? (3) Was there an improvement in pain at rest or with activity, range of motion (ROM), and strength after revision surgery? METHODS: Between 2004 and 2013, 38 patients who were older than 80 years (84 ± 3 years) underwent revision surgery to a RSA...
July 11, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28696789/arthroscopic-knot-removal-for-failed-superior-labrum-anterior-posterior-repair-secondary-to-knot-induced-pain
#14
Jung Gwan Park, Nam Su Cho, Jung Youn Kim, Jong Hoon Song, Se Jung Hong, Yong Girl Rhee
BACKGROUND: Studies on failed superior labrum anterior-posterior (SLAP) repair are increasing. However, the number of reports on treatment options for failed SLAP repair remains quite low, and the clinical results vary between different study groups. PURPOSE: To describe the clinical presentation of failed SLAP repair due to knot-induced pain and evaluate the efficacy of arthroscopic knot removal. STUDY DESIGN: Case series; Level of evidence, 4...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28689825/biomechanical-analysis-of-anterior-bone-graft-augmentation-with-reversed-shoulder-arthroplasty-in-large-combined-glenoid-defects-compared-with-total-bony-joint-line-reconstruction-modified-bony-increased-offset-reversed-shoulder-arthroplasty
#15
Matthias Königshausen, Nina Sverdlova, Corinna Mersmann, Christoph Ehlert, Birger Jettkant, Rolf Dermietzel, Thomas Armin Schildhauer, Dominik Seybold
BACKGROUND: The aim of this biomechanical study was to compare 2 surgical techniques for the reconstruction of large, combined, uncontained glenoid defects with reversed shoulder arthroplasty (RSA). METHODS: Three groups of scapulae with RSA were tested by the application of a physiological combination of compressive/shear loads in Sawbones (Pacific Research Laboratories, Inc., Vashon Island, WA, USA) and cadavers. Two of the groups (both Sawbones and cadaveric specimens) consisted of anterior combined defects (14 mm in depth), and the third group served as a control group (only Sawbones specimens)...
July 6, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28689820/reverse-total-shoulder-glenoid-baseplate-stability-with-superior-glenoid-bone-loss
#16
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/28688932/neurologic-complications-of-shoulder-joint-replacement
#17
Craig M Ball
BACKGROUND: Little attention has been given to neurologic complications after shoulder joint replacement (SJR). Previously thought to occur infrequently, it is likely that many are not clinically recognized, and they can result in postoperative morbidity and impair the patient's recovery. The purpose of this study was to document the prevalence of nerve complications after SJR, to identify the nerves involved, and to define patient outcomes. METHODS: This was a retrospective review of 211 SJRs in 202 patients during a 5-year period were included, with 89 male and 122 female patients at an average age of 70 years...
July 5, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28688826/biomechanical-analysis-of-latarjet-screw-fixation-comparison-of-screw-types-and-fixation-methods
#18
Jason J Shin, Jason T Hamamoto, Timothy S Leroux, Maristella F Saccomanno, Akshay Jain, Mahmoud M Khair, Christen R Mellano, Elizabeth F Shewman, Gregory P Nicholson, Anthony A Romeo, Brian J Cole, Nikhil N Verma
PURPOSE: To compare the initial fixation stability, failure strength, and mode of failure of 5 different screw types and fixation methods commonly used for the classic Latarjet procedure. METHODS: Thirty-five fresh-frozen cadaveric shoulder specimens were allocated into 5 groups. A 25% anteroinferior glenoid defect was created, and a classic Latarjet coracoid transfer procedure was performed. All grafts were fixed with 2 screws, differing by screw type and/or fixation method...
July 5, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28681354/does-postoperative-glenoid-retroversion-affect-the-2-year-clinical-and-radiographic-outcomes-for-total-shoulder-arthroplasty
#19
Benjamin C Service, Jason E Hsu, Jeremy S Somerson, Stacy M Russ, Frederick A Matsen
BACKGROUND: While glenoid retroversion and posterior humeral head decentering are common preoperative features of severely arthritic glenohumeral joints, the relationship of postoperative glenoid component retroversion to the clinical results of total shoulder arthroplasty (TSA) is unclear. Studies have indicated concern for inferior outcomes when glenoid components are inserted in 15° or more retroversion. QUESTIONS/PURPOSES: In a population of patients undergoing TSA in whom no specific efforts were made to change the version of the glenoid, we asked whether at 2 years after surgery patients having glenoid components implanted in 15° or greater retroversion had (1) less improvement in the Simple Shoulder Test (SST) score and lower SST scores; (2) higher percentages of central peg lucency, higher Lazarus radiolucency grades, higher mean percentages of posterior decentering, and more frequent central peg perforation; or (3) a greater percentage having revision for glenoid component failure compared with patients with glenoid components implanted in less than 15° retroversion...
July 5, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28676895/analysis-of-normal-and-dysplastic-glenohumeral-morphology-at-magnetic-resonance-imaging-in-children-with-neonatal-brachial-plexus-palsy
#20
Fabian van de Bunt, Michael L Pearl, Eric K Lee, Lauren Peng, Paul Didomenico
BACKGROUND: Glenoid version and percentage of the humeral head anterior to the scapular line are commonly used 2-D measures to assess deformity of the glenohumeral joint of children with neonatal brachial plexus palsy. OBJECTIVE: To assess whether glenoid version and percentage of the humeral head anterior to the scapular line would be altered by standardizing the measurements to the orientation of the scapula. MATERIALS AND METHODS: Twenty-one bilateral magnetic resonance imaging (MRI) scans were evaluated by four reviewers...
July 4, 2017: Pediatric Radiology
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