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https://www.readbyqxmd.com/read/29792117/the-rockwood-classification-in-acute-acromioclavicular-joint-injury-does-not-correlate-with-symptoms
#1
J Granville-Chapman, E Torrance, A Rashid, L Funk
PURPOSE: Rockwood classified acromioclavicular (AC) joint injuries by displacement of the joint on radiographs. This classification has driven the management dogma of acute AC dislocation. The correlation between Rockwood grade and symptoms has not been described in acute injury. This study assesses that relationship. METHODS: This series included 77 patients with acute AC joint injury (<6 weeks), treated between 2006 and 2015. Objective and patient-reported measures enabled correlation between clinical measures and Rockwood grade...
May 2018: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29769141/single-coracoclavicular-suture-fixation-with-mersilene-tape-versus-hook-plate-in-the-treatment-of-acute-type-v-acromioclavicular-dislocation-a-retrospective-analysis
#2
Ying-Cheng Huang, Shan-Wei Yang, Chun-Yu Chen, Kai-Cheng Lin, Jenn-Huei Renn
BACKGROUND: Here, we compared the clinical and radiographic outcomes between coracoclavicular (CC) fixation with Mersilene tape and hook plate for acute unstable acromioclavicular (AC) joint dislocation treatment. METHODS: We enrolled 49 patients with unstable acute AC dislocation who, between January 2010 and January 2014, underwent surgery with single CC suture fixation with Mersilene tape (M group, 25 cases) or clavicle hook plate (H group, 24 cases). In M and H groups, the average age was 43...
May 16, 2018: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/29703292/cataract-surgery-with-intraocular-lens-implantation-in-3-brothers-with-megalocornea-long-term-follow-up
#3
Marco Messina, Andrew R Ross, Giulio Pocobelli, Dalia G Said, Harminder S Dua
Cataract surgery in patients with megalocornea is challenging because of the large capsular bag in which a conventional intraocular lens (IOL) does not fit and the atrophic nature of the iris. We report the procedures and outcomes of cataract surgery in 6 eyes of 3 brothers with megalocornea. In 2 eyes, a posterior chamber IOL (PC IOL) was inserted and sutured to the iris with 10-0 nylon sutures. In the other 4 eyes, an iris-clip anterior chamber IOL (AC IOL) was inserted. In all cases, the postoperative corrected distance visual acuity (CDVA) was 6/6...
March 2018: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/29679723/comparison-of-hook-plate-with-versus-without-double-tunnel-coracoclavicular-ligament-reconstruction-for-repair-of-acute-acromioclavicular-joint-dislocations-a-prospective-randomized-controlled-clinical-trial
#4
Jian Yin, Zhaoyang Yin, Ge Gong, Chao Zhu, Chao Sun, Xinhui Liu
PURPOSE: This study was designed to compare the surgical outcomes of a hook plate with double-tunnel coracoclavicular (CC) ligament reconstruction by conjoined tendon transfer versus single hook plate surgery for the repair of acute type of Rockwood type III and V acromioclavicular (AC) joint dislocations. METHODS: The study cohort included 62 patients with acute (within 6 weeks after trauma) Rockwood type III and V AC joint dislocations who underwent surgery from February 2012 to September 2015...
April 18, 2018: International Journal of Surgery
https://www.readbyqxmd.com/read/29613925/determination-of-elbow-laxity-in-a-sequential-soft-tissue-injury-model-a-cadaveric-study
#5
Marc Schnetzke, Moritz Bergmann, Kilian Wegmann, Lars-Peter Müller, Stephan Grechenig, Paul-Alfred Grützner, Thorsten Guehring
BACKGROUND: The objective of our study was to analyze, under fluoroscopy, joint angulation of uninjured elbows and elbows with distinct induced collateral ligament injury. METHODS: Twelve elbow specimens were tested for varus and valgus joint angulation using 4 different examination methods (application of both varus and valgus stress by each of 2 examiners [Examiner 1 and Examiner 2] and application of 1 and 2 Nm of torque using a calibrated electric force scale) in 4 elbow positions (in full extension with 90° of supination and 90° of pronation, and in 30° of flexion with 90° of supination and 90° of pronation)...
April 4, 2018: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29581067/the-use-of-the-lars-system-in-the-treatment-of-ac-joint-instability-long-term-results-after-a-mean-of-7-4-years
#6
T M Tiefenboeck, S Boesmueller, D Popp, S Payr, J Joestl, H Binder, M Schurz, M Komjati, C Fialka, R C Ostermann
BACKGROUND: The acromioclavicular (AC) joint is of great importance for shoulder stability and one of the most frequently injured regions of the shoulder. HYPOTHESIS: AC joint reconstruction with the ligament augmentation & reconstruction system (LARS™) leads to a good-to-excellent outcome at long-term follow-up. PATIENTS AND METHODS: This study was performed as a retrospective single-centre data analysis of a level-I trauma centre. All patients treated operatively for an acute AC dislocation with the LARS™ between 2003 and 2013 were included...
March 23, 2018: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29430501/modified-internal-fixation-technique-for-acromio-clavicular-ac-joint-dislocation-the-hidden-knot-technique
#7
Hamidreza Aslani, Fateme Mirzaee, Zohreh Zafarani, Shahin Salehi
Acromioclavicular (AC) joint injuries are common and often seen in contact athletes, resulting from a fall on the shoulder tip with adducted arm. This joint is stabilized by both static and dynamic structures including the coracoclavicular (CC) ligament. Most reconstruction techniques focus on CC ligament augmentation as the primary stabilizer of the AC joint. The best surgical technique for some AC joint dislocations is still controversial. In this study, we explained a modification of the CC ligament reconstruction technique described by Wellmann...
January 2018: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/29397294/a-prospective-study-of-coracoclavicular-ligament-reconstruction-with-autogenous-peroneus-longus-tendon-for-acromioclavicular-joint-dislocations
#8
Yu Zhu, Peilin Hsueh, Bingfang Zeng, Yimin Chai, Changqing Zhang, Yunfeng Chen, Yuchen Wang, Tuerxun Maimaitiaili
BACKGROUND: Anatomic coracoclavicular (CC) ligament reconstruction (ACCR) provides good outcomes for Rockwood type III and VI acromioclavicular (AC) joint dislocations. Various grafts have been used, but complications from graft harvesting are not uncommon. This study examined the clinical and radiographic outcomes of patients with AC joint dislocations repaired with the autogenous anterior half of the peroneus longus tendon (AHPLT) to achieve ACCR. METHODS: Patients with a Rockwood type III to V AC joint dislocation and magnetic resonance imaging of the disruption of the CC ligaments, as well as the AC capsule, were prospectively recruited...
January 31, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29374781/evaluation-of-the-clavicular-tunnel-placement-on-coracoclavicular-ligament-reconstruction-for-acromioclavicular-dislocations-a-finite-element-analysis
#9
Onur Kocadal, Korcan Yüksel, Melih Güven
PURPOSE: The two-tunnel coracoclavicular ligament reconstruction (CLR) technique is one of the treatment approaches commonly used in the surgical treatment of acromioclavicular (AC) injuries. Clavicular tunnel malposition is one of the major causes of failure in coracoclavicular ligament reconstruction. The main purpose of this study was to investigate the effects of clavicular tunnel placement on tendon loading in the CLR technique with finite element analysis. METHODS: Models of clavicle and scapula were constructed using computerized tomography images...
January 27, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29369191/comparison-of-surgical-and-conservative-treatment-of-rockwood-type-iii-acromioclavicular-dislocation-a-meta-analysis
#10
REVIEW
Guolong Tang, Yu Zhang, Yuan Liu, Xiaodong Qin, Jun Hu, Xiang Li
BACKGROUND: There is no consensus on the effects of surgical versus conservative treatment on Rockwood type-III dislocation of the acromioclavicular joint in general orthopedic practice. The objective of this meta-analysis was to compare the clinical outcomes of patients managed surgically and conservatively following type-III acromioclavicular (AC) dislocation. METHODS: The Cochrane Library, EMBASE, MEDLINE via Ovid SP, and PubMed databases were searched for randomized controlled trials and observational studies...
January 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29354426/acromioclavicular-joint-dislocation-repair-through-open-ligament-transfer-and-nonabsorbable-suture-fixation
#11
Ricardo Canquerini da Silva, Bruno Silveira Pavei, Márcio B Ferrari, George Sanchez, Luiza Barbosa Horta Barbosa, João L Ellera Gomes
Acromioclavicular (AC) joint instability is a fairly common and particularly limiting injury that may result in persistent pain and reduced quality of life. In most cases, conservative management is successful. However, in the case of a severe AC joint dislocation, surgical intervention may be warranted. Previous surgical techniques for treatment of AC joint instability include screw fixation between the coracoid and clavicle, coracoacromial ligament transfer from its acromial insertion to the clavicle, and reconstruction of the coracoacromial and/or coracoclavicular ligaments...
August 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29349032/revision-acromioclavicular-coracoclavicular-reconstruction-use-of-precontoured-button-and-2-allografts
#12
Daniel B Haber, Robert C Spang, George Sanchez, Anthony Sanchez, Márcio B Ferrari, Matthew T Provencher
Injuries to the acromioclavicular (AC) joint are common, particularly in the young and active population. Approximately 9% of all shoulder girdle injuries involve the AC joint, and AC joint dislocations represent approximately 8% of all joint dislocations throughout the body. AC joint injuries are graded as type I through type VI according to the Rockwood classification. Type I and II injuries are typically treated nonoperatively, whereas type IV, V, and VI injuries are most often treated surgically. A variety of surgical techniques have been described, including anatomic and nonanatomic reconstruction...
December 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/29335760/-current-aspects-and-new-techniques-in-dislocation-of-the-shoulder-joint
#13
REVIEW
J Abel, M A Zumstein, L Bolliger, M O Schär
With 12% of all injuries concerning the shoulder, acromioclavicular (AC) joint dislocations are a common injury especially in young and active patients. The Rockwood classification is widely accepted, which differentiates between six types depending on the degree of injury and the vertical dislocation. Because the classification does not adequately address the horizontal instability, its benefits are questionable and there is currently no consensus. For this reason, the classification and the therapy of these injuries are increasingly becoming the subject of scientific investigations...
February 2018: Der Orthopäde
https://www.readbyqxmd.com/read/29312844/new-insights-in-the-treatment-of-acromioclavicular-separation
#14
REVIEW
Christiaan J A van Bergen, Annelies F van Bemmel, Tjarco D W Alta, Arthur van Noort
A direct force on the superior aspect of the shoulder may cause acromioclavicular (AC) dislocation or separation. Severe dislocations can lead to chronic impairment, especially in the athlete and high-demand manual laborer. The dislocation is classified according to Rockwood. Types I and II are treated nonoperatively, while types IV, V and VI are generally treated operatively. Controversy exists regarding the optimal treatment of type III dislocations in the high-demand patient. Recent evidence suggests that these should be treated nonoperatively initially...
December 18, 2017: World Journal of Orthopedics
https://www.readbyqxmd.com/read/29274862/percutaneous-minimally-invasive-repair-of-acromioclavicular-joint-dislocation-using-cannulated-screws-under-ultrasonic-vs-c-arm-navigation-a-prospective-trial
#15
X Shui, S Chen, G Huang, J Kong, C Zhou, W Lin
INTRODUCTION: To compare percutaneous minimally invasive repair (PMIR) of acute acromioclavicular (AC) joint dislocation under ultrasound guidance (PMIR-UN) vs. C-arm navigation (PMIR-CN). HYPOTHESIS: PMIR-UN has similar functional and radiographic outcomes as PMIR-CN. MATERIALS AND METHODS: We treated 48 patients with acute grade III or V AC joint dislocation with surgical reduction and fixation with Kirschner wires and cannulated screws...
December 21, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29192697/mapping-piezoelectric-response-in-nanomaterials-using-a-dedicated-non-destructive-scanning-probe-technique
#16
Yonatan Calahorra, Michael Smith, Anuja Datta, Hadas Benisty, Sohini Kar-Narayan
There has been tremendous interest in piezoelectricity at the nanoscale, for example in nanowires and nanofibers where piezoelectric properties may be enhanced or controllably tuned, thus necessitating robust characterization techniques of piezoelectric response in nanomaterials. Piezo-response force microscopy (PFM) is a well-established scanning probe technique routinely used to image piezoelectric/ferroelectric domains in thin films, however, its applicability to nanoscale objects is limited due to the requirement for physical contact with an atomic force microscope (AFM) tip that may cause dislocation or damage, particularly to soft materials, during scanning...
December 14, 2017: Nanoscale
https://www.readbyqxmd.com/read/29174018/interobserver-and-intraobserver-reliability-of-radiographic-classification-of-acromioclavicular-joint-dislocations
#17
Jonathan D Ringenberg, Zachary Foughty, Adam D Hall, J Mack Aldridge, Joseph B Wilson, Marshall A Kuremsky
HYPOTHESIS AND BACKGROUND: The classification and treatment of acromioclavicular (AC) joint dislocations remain controversial. The purpose of this study was to determine the interobserver and intraobserver reliability of the Rockwood classification system. We hypothesized poor interobserver and intraobserver reliability, limiting the role of the Rockwood classification system in determining severity of AC joint dislocations and accurately guiding treatment decisions. METHODS: We identified 200 patients with AC joint injuries using the International Classification of Diseases, Ninth Revision code 831...
March 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29138786/electroconvection-of-pure-nematic-liquid-crystals-without-free-charge-carriers
#18
Kuang-Wu Lee, Thorsten Pöschel
We consider electroconvection as a response of nematic liquid crystals to an external electric AC field, in the absence of free charge carriers. Previous experimental and theoretical results emphasized charge carriers as a necessary precondition of electroconvection because free-charges in the fluid can respond to an external electric field. Therefore, ionized molecules are considered as responsible for the driving of electroconvective flows. In experiments, finite conductivity is achieved by adding charge-carrying dye molecules or in non-dyed liquid crystals by impurities of the samples...
November 29, 2017: Soft Matter
https://www.readbyqxmd.com/read/29032901/bosworth-and-modified-phemister-techniques-revisited-a-comparison-of-intraarticular-vs-extraarticular-fixation-methods-in-the-treatment-of-acute-rockwood-type-iii-acromioclavicular-dislocations
#19
Engin Cetinkaya, Yavuz Arıkan, Kubilay Beng, Harun Mutlu, Merter Yalçınkaya, Onat Üzümcügil
OBJECTIVE: The aim of this study was to compare the long-term clinical and radiological results of Acromioclavicular (AC) fixation with K-wires (the modified Phemister procedure) and Coracoclavicular (CC) fixation with the Bosworth screw in the surgical treatment of Type 3 AC joint dislocations. METHODS: Thirty-two patients with complete set of medical records and who received surgical treatment between September 2005 and January 2009 due to acute Rockwood Type 3 AC joint dislocation and properly attended their follow-ups were retrospectively evaluated...
December 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/28986617/risk-of-fracture-of-the-acromion-depends-on-size-and-orientation-of-acromial-bone-tunnels-when-performing-acromioclavicular-reconstruction
#20
Felix Dyrna, Celso Cruz Timm de Oliveira, Michael Nowak, Andreas Voss, Elifho Obopilwe, Sepp Braun, Leo Pauzenberger, Andreas B Imhoff, Augustus D Mazzocca, Knut Beitzel
PURPOSE: Current techniques for anatomic repair of the dislocated acromioclavicular (AC) joint aim on reconstruction of the AC ligaments and utilize tunnels drilled through the acromion . This improves the stability of the reconstruction but might also increase the risk of fractures at the acromion. The purpose of this study was to evaluate the fracture risk for the acromion after transacromial tunnel placement for anatomic AC joint stabilization procedure. It was hypothesized that the risk of fracture of the acromion is correlated to size and orientation of bone tunnels commonly used for anatomic AC joint reconstruction...
January 2018: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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