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https://www.readbyqxmd.com/read/28062098/midshaft-clavicle-fractures-with-associated-ipsilateral-acromioclavicular-joint-dislocations-incidence-and-risk-factors
#1
Christina Ottomeyer, Benjamin C Taylor, Mark Isaacson, Lara Martinez, Pierce Ebaugh, Bruce G French
INTRODUCTION: Simultaneous ipsilateral clavicle and acromioclavicular (AC) joint injury have been infrequently reported in the literature at this time. The purpose of this study was to assess incidence as well as assess risk factors for this dual injury pattern. METHODS: We performed a retrospective review of a prospectively collected database (Level III evidence), evaluating 383 adult patients without previous shoulder girdle injury or trauma with a minimum 1-year follow-up who sustained a displaced diaphyseal clavicle fracture...
December 28, 2016: Injury
https://www.readbyqxmd.com/read/28049068/effect-of-oxygen-ion-irradiation-on-dielectric-structural-chemical-and-thermoluminescence-properties-of-natural-muscovite-mica
#2
Sukhnandan Kaur, Surinder Singh, Lakhwant Singh
Thin cleaved samples (~18µm) of natural muscovite mica were irradiated with 80MeV oxygen ion beam at fluence ranging from 1×10(12) to 5×10(13)ion/cm(2). The alterations in dielectric, structural, chemical and thermoluminescence properties of irradiated as well as pristine samples have been investigated. Dielectric constant decreases while other dielectric parameters such as dielectric loss, tanδ, ac conductivity, real and imaginary parts of electric modulus increase with increase of ion fluence. Williamson Hall investigation has been utilized to ascertain crystallite size and micro strain of pristine and irradiated samples...
December 29, 2016: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28031153/surgical-management-and-hearing-outcome-of-traumatic-ossicular-injuries
#3
Stefan Delrue, Nicolas Verhaert, Joost van Dinther, Andrzej Zarowski, Thomas Somers, Christian Desloovere, Erwin Offeciers
OBJECTIVE: The purpose of this study was to investigate etiological, clinical, and pathological characteristics of traumatic injuries of the middle ear ossicular chain and to evaluate hearing outcome after surgery. MATERIAL AND METHODS: Thirty consecutive patients (31 ears) with traumatic ossicular injuries operated on between 2004 and 2015 in two tertiary referral otologic centers were retrospectively analyzed. Traumatic events, clinical features, ossicular lesions, treatment procedures, and audiometric results were evaluated...
December 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/28002194/spontaneous-dislocation-of-trabeculectomy-scleral-flap-in-the-anterior-chamber-in-a-patient-with-pseudoxanthoma-elasticum
#4
Lina Danieliute, Myrto Tsagkataki, Eleni Nikita
We report a case of a 54-year-old man, known to have pseudoxanthoma elasticum (PXE), who had a trabeculectomy in his left eye for secondary glaucoma following blunt trauma. Ten years after augmented trabeculectomy, the patient presented to casualty clinic with an inferiorly dislocated, anterior chamber (AC), scleral trabeculectomy flap. Corrected vision was hand movement with an intraocular pressure of 17 mm Hg. There was significant AC inflammation (cells 2+). Gonioscopy revealed a residual mobile scleral flap...
December 20, 2016: Journal of Glaucoma
https://www.readbyqxmd.com/read/27940250/comparative-study-on-the-treatment-of-rockwood-type-iii-acute-acromioclavicular-dislocation-clinical-results-from-the-tightrope-%C3%A2-technique-vs-k-wire-fixation
#5
K Horst, C Garving, T Thometzki, P Lichte, M Knobe, T Dienstknecht, M Hofman, H-C Pape
BACKGROUND AND HYPOTHESIS: The aim of this study was to address the inconsistency regarding the operative treatment of Rockwood type III acromioclavicular joint separation. We compared results after single- and double TightRope(®) reduction with results after acromioclavicular transfixation via K-wires only and additional ligament augmentation in acute acromioclavicular (AC) joint separations graded Rockwood type III, and hypothesized that the TightRope(®) technique leads to better clinical and radiological results...
December 8, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27895001/surgical-management-and-hearing-outcome-of-traumatic-ossicular-injuries
#6
Stefan Delrue, Nicolas Verhaert, Joost van Dinther, Andrzej Zarowski, Thomas Somers, Christian Desloovere, Erwin Offeciers
OBJECTIVE: The purpose of this study was to investigate etiological, clinical, and pathological characteristics of traumatic injuries of the middle ear ossicular chain and to evaluate hearing outcome after surgery. MATERIAL AND METHODS: Thirty consecutive patients (31 ears) with traumatic ossicular injuries operated on between 2004 and 2015 in two tertiary referral otologic centers were retrospectively analyzed. Traumatic events, clinical features, ossicular lesions, treatment procedures, and audiometric results were evaluated...
November 28, 2016: Journal of International Advanced Otology
https://www.readbyqxmd.com/read/27818896/midterm-results-of-coracoclavicular-stabilization-with-double-augmentation-for-acute-acromioclavicular-dislocation
#7
Sungwook Choi, Tong-Joo Lee, Myung-Ku Kim, Ji Eun Park, Hyunseong Kang
INTRODUCTION: Numerous techniques have been introduced for the treatment of acute acromioclavicular (AC) joint dislocation. We aim to report the midterm results of coracoclavicular (CC) stabilization with double augmentation for the acute AC joint dislocation. CASE DESCRIPTION: Forty-three patients who underwent surgery for acute AC joint dislocation were followed up for an average of 59.6 months (range 40-97). The study composed of two treatment groups: group S, with 25 patients, in whom two suture anchors were used; and group B, with 18 patients, in whom a suture anchor and a double flip-button device were used, however the techniques in both groups are based on the same principle which is double augmentation...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27776006/arthroscopic-assisted-acromioclavicular-and-coracoclavicular-ligaments-reconstruction-for-chronic-acromioclavicular-dislocations-surgical-technique
#8
Achilleas Boutsiadis, Laurent Baverel, Hubert Lenoir, Philippe Delsol, Johannes Barth
Chronic acromioclavicular (AC) instability is a rare posttraumatic shoulder condition that can lead to undesirable symptoms like persistent pain, muscle fatigue, loss of strength, or even scapular dyskinesis. It is well known that in these cases the superior functional results depend on the restoration of the anatomy and stability of the AC joint in both vertical and horizontal planes. Considering the ligaments degeneration and atrophy in chronic AC joint dislocations, we present an arthroscopic-assisted reconstruction of both the coracoclavicular and AC ligaments using autograft augmentation...
December 2016: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/27765500/loss-of-reduction-and-complications-of-coracoclavicular-ligament-reconstruction-with-autogenous-tendon-graft-in-acute-acromioclavicular-dislocations
#9
Nam Hong Choi, Seok Min Lim, Sang Young Lee, Tae Kang Lim
BACKGROUND: This study was conducted to report loss of reduction and complications after single-tunnel coracoclavicular (CC) ligament reconstruction with autogenous semitendinosus tendon graft for acute acromioclavicular (AC) joint dislocations. METHODS: This retrospective study included patients with acute, unstable AC dislocations (surgery within 6 weeks after trauma). We excluded patients with chronic injury and distal clavicle fractures with CC ligaments disruption...
October 17, 2016: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27703932/acromioclavicular-joint-dislocation-with-ipsilateral-mid-third-clavicle-mid-shaft-humerus-and-coracoid-process-fracture-a-case-report
#10
Naveen Sharma, Avinash Mandloi, Ashish Agrawal, Shailendra Singh
INTRODUCTION: The clavicle, humerus and acromioclavicular (AC) joint separately are very commonly involved in traumatic injuries around the shoulder. Acromioclavicular joint dislocation with distal clavicle fracture is a well recognized entity in clinical practice. AC joint dislocation with mid shaft clavicle fracture is uncommon and only few cases have been reported in literature. However, to the best of our knowledge, this is the first case report to describe an acromioclavicular dislocation with ipsilateral mid shaft clavicle, mid shaft humerus and coracoid process fracture...
April 2016: Journal of Orthopaedic Case Reports
https://www.readbyqxmd.com/read/27663286/acute-high-grade-acromioclavicular-dislocations-treated-with-triple-button-device-minar-preliminary-results
#11
José Antonio Cano-Martínez, Gregorio Nicolás-Serrano, Julio Bento-Gerard, Francisco Picazo-Marín, Josefina Andrés-Grau
OBJECTIVE: Describe the clinical and radiological results of triple button device in the treatment of high-grade AC dislocations (Rockwood, type V) and assess whether improves vertical and horizontal stability compared to the techniques previously described. MATERIAL AND METHODS: This retrospective study included 39 patients with type V acromioclavicular dislocations treated with Twin Tail TightRope™ system (triple button device). Of the 39 patients, 33 (26 men and 7 women) were able to participate in clinical and radiographic follow up...
September 15, 2016: Injury
https://www.readbyqxmd.com/read/27661200/in-situ-high-temperature-atomic-level-studies-of-large-closed-grain-boundary-loops-in-graphene
#12
Chuncheng Gong, Kuang He, Qu Chen, Alex W Robertson, Jamie H Warner
We use an in situ heating holder within an aberration corrected transmission electron microscope (AC-TEM) to study the structure and dynamics of large closed grain boundary (GB) loops in graphene at the atomic level. Temperatures up to 800 °C are used to accelerate dynamic evolution of the defect clusters, increasing bond rotation and atomic addition/loss. Our results show that the large closed GB loops relax under electron beam irradiation into several isolated dislocations far apart from each other. Line defects composed of several adjacent excess-atom clusters can be found during the reconfiguration process...
September 23, 2016: ACS Nano
https://www.readbyqxmd.com/read/27600992/injury-patterns-of-the-acromioclavicular-ligament-complex-in-acute-acromioclavicular-joint-dislocations-a-cross-sectional-fundamental-study
#13
Dirk Maier, Martin Jaeger, Kilian Reising, Matthias J Feucht, Norbert P Südkamp, Kaywan Izadpanah
BACKGROUND: Horizontal instability impairs clinical outcome following acute acromioclavicular joint (ACJ) reconstruction and may be caused by insufficient healing of the superior acromioclavicular ligament complex (ACLC). However, characteristics of acute ACLC injuries are poorly understood so far. Purposes of this study were to identify different ACLC tear types, assess type-specific prevalence and determine influencing cofactors. METHODS: This prospective, cross-sectional study comprised 65 patients with acute-traumatic Rockwood-5 (n = 57) and Rockwood-4 (n = 8) injuries treated operatively by means of mini-open ACJ reduction and hook plate stabilization...
2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27576109/anatomic-study-of-coracoclavicular-ligaments-for-reconstruction-of-acromioclavicular-joint-dislocations
#14
Nai-Feng Zhu, Bi-Yu Rui, Yun-Long Zhang, Yun-Feng Chen
BACKGROUND: There has been a trend to reconstruct the coracoclavicular (CC) ligaments anatomically for management of acromioclavicular (AC) joint dislocations. PURPOSE: The aim of this study was to determine the location and orientation of the CC ligaments for anatomic reconstruction of the AC joint. METHODS: The subjects were a total of 40 shoulders from 20 Chinese cadavers. Two K-wires were drilled through the insertion center of the conoid and trapezoid ligaments respectively...
November 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27565482/sports-activity-after-anatomic-acromioclavicular-joint-stabilisation-with-flip-button-technique
#15
Felix Porschke, Marc Schnetzke, Sara Aytac, Stefan Studier-Fischer, Paul Alfred Gruetzner, Thorsten Guehring
PURPOSE: Sports activity after surgical AC joint stabilisation has not been comprehensively evaluated to date. The aim of this study was to determine rate, level and time to return to sports after AC joint stabilisation and to identify the influence of overhead sports on post-operative sports activity. METHODS: In this retrospective case series, a total of 68 patients with a high-grade AC joint dislocation (Rockwood type V) were stabilised using a single TightRope technique...
August 26, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27504468/comparison-of-short-term-complications-between-2-methods-of-coracoclavicular-ligament-reconstruction-a-multicenter-study
#16
Lane N Rush, Nicholas Lake, Eric C Stiefel, Edward R Hobgood, J Randall Ramsey, Michael J O'Brien, Larry D Field, Felix H Savoie
BACKGROUND: Numerous techniques have been used to treat acromioclavicular (AC) joint dislocation, with anatomic reconstruction of the coracoclavicular (CC) ligaments becoming a popular method of fixation. Anatomic CC ligament reconstruction is commonly performed with cortical fixation buttons (CFBs) or tendon grafts (TGs). PURPOSE: To report and compare short-term complications associated with AC joint stabilization procedures using CFBs or TGs. STUDY DESIGN: Cohort study; Level of evidence, 3...
July 2016: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/27441942/operative-fixation-of-chronic-acromioclavicular-joint-dislocation-with-hook-plate-and-modified-ligament-transfer
#17
Michael D McKee
PURPOSE: The optimal treatment for acute dislocation of the acromioclavicular (AC) joint remains unclear, and prior randomized trials did not reveal any significant improvements in the operative groups. However, it is clear that some patients treated nonoperatively are dissatisfied with their outcome and request surgical correction. This video demonstrates one method of repair of a chronic dislocation of the AC joint in a patient with significant symptomatology following nonoperative treatment of a high-grade AC dislocation...
August 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27433301/treatment-of-chronic-acromioclavicular-joint-dislocation-in-a-paraplegic-patient-with-the-weaver-dunn-procedure-and-a-hook-plate
#18
Holger Godry, Mustafa Citak, Matthias Königshausen, Thomas A Schildhauer, Dominik Seybold
In case of patients with spinal cord injury and concomitant acromioclavicular (AC) joint-dislocation the treatment is challenging, as in this special patient group the function of the shoulder joint is critical because patients depend on the upper limb for mobilization and wheelchair-locomotion. Therefore the goal of this study was to examine, if the treatment of chronic AC-joint dislocation using the Weaver-Dunn procedure augmented with a hook-plate in patients with a spinal cord injury makes early postoperative wheelchair mobilization and the wheelchair transfer with full weight-bearing possible...
June 27, 2016: Orthopedic Reviews
https://www.readbyqxmd.com/read/27334621/comparison-of-surgical-outcomes-between-fixation-with-hook-plate-and-loop-suspensory-fixation-for-acute-unstable-acromioclavicular-joint-dislocation-a-systematic-review-and-meta-analysis
#19
Alisara Arirachakaran, Manusak Boonard, Peerapong Piyapittayanun, Vajarin Phiphobmongkol, Kornkit Chaijenkij, Jatupon Kongtharvonskul
Treatment of acute (≤4 weeks) high-grade acromioclavicular (AC) joint separation (types III-VI) is still controversial. Currently, the two modern techniques that are widely used include hook plate fixation and coracoclavicular (CC) ligament fixation using a suspensory loop device (tightrope, synthetic ligament or absorbable polydioxansulfate sling). These techniques are both reported to have superior clinical outcomes. This systematic review and meta-analysis aimed to assess and compare clinical outcomes of hook plate fixation versus fixation of the CC ligament using a loop suspensory fixation (LSF) device for the treatment of AC joint injury...
August 2016: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/27262254/help-desk-answers-surgery-vs-conservative-management-for-ac-joint-repair-how-do-the-2-compare
#20
Bruce Matchin, Bruce Yee, Timothy Mott
When not considering the grade of acromioclavicular (AC) joint dislocation, both conservative and surgical management lead to positive outcomes, although surgically managed patients require more time out of work.
April 2016: Journal of Family Practice
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