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https://www.readbyqxmd.com/read/29222664/anatomical-reconstruction-to-treat-acromion-fractures-following-reverse-shoulder-arthroplasty
#1
Florian Hess, Ralph Zettl, Daniel Smolen, Christoph Knoth
PURPOSE: Scapular fractures after reverse shoulder arthroplasty (RSA) are often associated with substantial shoulder impairment. Patient outcomes following either conservative or operative treatment have not been favourable, and consensus is lacking on the best treatment approach. We describe a technique for anatomic reconstruction of fractured lateral and basal acromion in patients at higher risk for diminished function or those for which conservative treatment has already failed. METHODS: Of the 95 patients who underwent RSA at our institution between December 2013 and December 2016, three had post-operative acromion fractures (type II)...
December 8, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/29153594/the-effectiveness-of-extracorporeal-shockwave-treatment-in-subacromial-impingement-syndrome-and-its-relation-with-acromion-morphology
#2
Esra Circi, Sibel Caglar Okur, Ozge Aksu, Erhan Mumcuoglu, Tolga Tuzuner, Nil Caglar
OBJECTIVE: The aim of this study was to evaluate the effectiveness of the extracorporeal shock wave therapy in the subacromial impingement syndrome and its relationship with the acromion morphology. METHODS: Thirty patients (24 women, 6 men) with subacromial impingement were evaluated. The average age of patients was 53.6 ± 9.8 years (range 39-80). Patients were divided into 3 groups according to the acromion morphology. ESWT 1500 at 0.12 am mL/mm(2) violence was applied once a week for 3 weeks...
November 16, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29144771/bursal-sided-rotator-cuff-tears-simple-versus-everted-type
#3
Hwan Jin Kim, Jung Youn Kim, Young Moon Kee, Yong Girl Rhee
BACKGROUND: No studies have focused on the everted type of bursal-sided partial-thickness rotator cuff tears (PTRCTs). PURPOSE: To evaluate the radiological characteristics, arthroscopic findings, and clinical and structural outcomes after arthroscopic repair of the everted type of bursal-sided PTRCTs. STUDY DESIGN: Cohort study; Level of evidence, 3. METHODS: Two groups of patients with bursal-sided PTRCTs (simple type, 25 shoulders; everted type, 25 shoulders) were enrolled...
November 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29133232/embryological-and-comparative-description-of-the-cephalic-vein-joining-the-external-jugular-vein-a-case-report
#4
R C Araújo, L A S Pires, M L Andrade, M C Perez, C S L Filho, M A Babinski
The cephalic vein arises from the radial end of the dorsal venous arch. It turns around the radial border of the forearm and passes proximally along the arm to the shoulder, where it enters the axillary vein by penetrating the clavipectoral triangle. The cephalic vein is prone to vary at the antecubital fossa, where it forms numerous anastomoses. A male cadaver fixated with a 10% formalin solution was dissected during regular anatomy lessons. It was found that the cephalic vein crossed the upper third of the arm between two fasciculi of the deltoid muscle and reached the shoulder, where it passed above the acromion and crossed the posterior border of the clavicle in order to join the external jugular vein...
November 10, 2017: Morphologie: Bulletin de L'Association des Anatomistes
https://www.readbyqxmd.com/read/29111197/the-critical-acromial-point-the-anatomic-location-of-the-lateral-acromion-in-the-critical-shoulder-angle
#5
Michael R Karns, Matthijs Jacxsens, William J Uffmann, Dane C Todd, Heath B Henninger, Robert T Burks
BACKGROUND: Acromioplasty has been proposed as a means of altering elevated critical shoulder angles (CSAs). We aimed to localize the critical acromion point (CAP) responsible for the acromial contribution of the CSA and determine whether resection of the CAP can alter the CSA to a normal range. METHODS: The CAP and 3-dimensional (3D) CSAs were determined on 3D computed tomography reconstructions of 88 cadaveric shoulders and compared with corresponding CSAs on digitally reconstructed radiographs...
October 27, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29094010/restoration-of-the-joint-geometry-and-outcome-after-stemless-tess-shoulder-arthroplasty
#6
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/29075914/sonographic-assessment-of-subacromial-bursa-distension-during-arm-abduction-establishing-a-threshold-value-in-the-diagnosis-of-subacromial-impingement-syndrome
#7
Gokhan Soker, Bozkurt Gulek, Eda Soker, Omer Kaya, Ibrahim Inan, Muhammet Arslan, Kaan Esen, Derya Memis, Cengiz Yilmaz
PURPOSE: In this study, we aimed to establish a quantitative threshold value in the diagnosis of subacromial impingement syndrome by measuring the thickness of the subacromial bursa during abduction and adduction. MATERIALS AND METHODS: Forty-five patients with subacromial impingement syndrome and 54 healthy individuals underwent dynamic shoulder ultrasonography. The subacromial bursa, between the supraspinatus tendon margin and peribursal adipose tissue, was measured between the acromion and humeral head at its widest part...
October 26, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/29069634/comparing-non-invasive-scapular-tracking-methods-across-elevation-angles-planes-of-elevation-and-humeral-axial-rotations
#8
T-J Grewal, A C Cudlip, C R Dickerson
Altered scapular motions premeditate shoulder impingement and other musculoskeletal disorders. Divergent experimental conditions in previous research precludes rigorous comparisons of non-invasive scapular tracking techniques. This study evaluated scapular orientation measurement methods across an expanded range of humeral postures. Scapular medial/lateral rotation, anterior/posterior tilt and protraction/retraction was measured using an acromion marker cluster (AMC), a scapular locator, and a reference stylus...
October 12, 2017: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/29067535/prebending-of-osteosynthesis-plate-using-3d-printed-models-to-treat-symptomatic-os-acromiale-and-acromial-fracture
#9
Hanne Beliën, Hanne Biesmans, Anny Steenwerckx, Eric Bijnens, Carl Dierickx
BACKGROUND: A symptomatic os acromiale can lead to impingement syndrome and rotator cuff tendinopathy. An acromion fracture is often part of a more complex scapular trauma that needs stabilisation. METHODS: We developed a new technique using a three-dimensional (3D) model and a distal clavicle reconstruction plate to treat os acromiale and acromion fractures. Our hypothesis was that such an approach would be a useful addition to the existing techniques. First, a 3D model of the acromion was printed, then an osteosynthesis plate was pre-bent to fit the exact shape and curve of the acromion...
October 24, 2017: Journal of Experimental Orthopaedics
https://www.readbyqxmd.com/read/29060242/interactive-patient-specific-3d-approximation-of-scapula-bone-shape-from-2d-x-ray-images-using-landmark-constrained-statistical-shape-model-fitting
#10
T Mutsvangwa, W Wasswa, V Burdin, B Borotikar, T S Douglas
We report on an interactive tool for patientspecific 3D approximation of scapula bone shape from 2D X-ray images using landmark-constrained statistical shape model (SSM) fitting. The 3D localization of points on the 2D X-ray images was done through X-ray stereophotogrammetry. The inferior angle, acromion and the coracoid process were identified as reliable landmarks from the anteroposterior (AP) and oblique lateral views in a landmark selection study. The 3D scapula surface was approximated through fitting the scapula SSM to the 3D reconstructed coordinates of the selected landmarks...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
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
#11
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...
October 6, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28975133/pectoralis-minor-contracture-in-throwing-shoulders-of-asymptomatic-adolescent-baseball-players
#12
Justin L Hodgins, William Rubenstein, David Kovacevic, Ajay Padaki, Charles M Jobin, Christopher S Ahmad
BACKGROUND: Although scapular malpositioning is commonly associated with rotational deficits and risk of injury, modifiable causes of such malpositioning in overhead athletes are not well described. PURPOSE/HYPOTHESIS: The purpose of this study was to examine the scapulothoracic profile of adolescent baseball players, specifically, pectoralis minor (PM) length. We hypothesized that PM would be shorter in throwing shoulders compared with nonthrowing shoulders. STUDY DESIGN: Cross-sectional study; Level of evidence, 3...
September 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/28967242/clinical-evaluation-of-static-scapular-posture-in-overhead-athletes-with-asymptomatic-shoulder-injuries
#13
Maria Papandreou, Evripidis Diamantis, Vasiliki-Ioanna Vrachlioti, Evdokia Billis, John Gliatis
BACKGROUND: Several etiologic factors have been postulated in overhead athletes according to their shoulder injuries, such as the scapular posture asymmetries. The measurement of the acromion border distance has been considered as reliable clinical test for evaluating the static scapula posture. The aim of this study was to quantify the differences in scapular posture between the dominant and non-dominant shoulders in two static positions in volleyball and swimmers athletes with asymptomatic shoulder injuries using the sliding calliper device...
September 29, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/28941970/outcome-of-reverse-shoulder-arthroplasty-with-pedicled-pectoralis-transfer-in-patients-with-deltoid-paralysis
#14
Bassem T Elhassan, Eric R Wagner, Jean-David Werthel, Malo Lehanneur, Julia Lee
BACKGROUND: Management of shoulder arthritis associated with deltoid paralysis can be very challenging. The purpose of this study was to report the outcome of reverse shoulder arthroplasty with pedicled pectoralis transfer to reconstruct the anterior deltoid in patients with symptomatic shoulder arthritis and a paralyzed deltoid. METHODS: This study included 31 patients with an average age of 51 years (range, 27-73 years). All patients had chronic deltoid paralysis with significant loss of function due to progressive arthritis associated with rotator cuff deficiency...
September 20, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28932971/the-correlation-of-supraspinatus-outlet-view-with-computed-tomography-for-visualization-of-the-anterior-acromial-undersurface
#15
Viktor Feldman, Niv Marom, Meir Nyska, Eugene Kotz, Jonathan E J Koh, Vidal Barchilon
INTRODUCTION: Understanding the real shape of the undersurface of the acromion prior to acromioplasty is indispensable. Today, Supraspinatus outlet view (SSOV) is a standard view used to determine the shape of the anterior acromion. Three types of acromial undersurface were described by Bigliani and Morrison. The purpose of this study was to find out whether the real acromial type can be visualized on X-ray SSOV and compare the shape of the anterior undersurface of the acromion visualized on SSOV, with the shape revealed on 2D CT reconstructions...
September 20, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28932284/acromial-j-bone-graft-on-the-acromion-for-surgical-treatment-of-glenohumeral-instability-an-anatomical-study
#16
Matthieu Sanchez, Shahnaz Klouche, Bruno Faivre, Thomas Bauer, Philippe Hardy
BACKGROUND: Anterior glenohumeral instability is frequently associated with anteroinferior glenoid bone defects. One original technique has been described in the literature that incorporates a J-shaped graft from the iliac crest into the anterior glenoid rim. The main goal of the present study was to evaluate the feasibility of harvesting a J-shaped graft from the acromion that corresponds to previously described dimensions. The secondary goal was to determine the ideal harvesting site...
October 2017: Shoulder & Elbow
https://www.readbyqxmd.com/read/28929007/the-postcranial-skeleton-of-boreogomphodon-cynodontia-traversodontidae-from-the-upper-triassic-of-north-carolina-usa-and-the-comparison-with-other-traversodontids
#17
Jun Liu, Vincent P Schneider, Paul E Olsen
Postcranial remains of Boreogomphodon from the Upper Triassic of North Carolina are described and compared to those of other known traversodontid cynodonts. The postcranial skeleton of Boreogomphodon is characterized by four sacral ribs, simple ribs lacking costal plates, the extension of the scapular neck below the acromion process, a short scapular facet on the procoracoid, a concave anterior margin of the procoracoid, humerus entepicondyle with smooth corner, and the presence of a fifth distal carpal. Four types of ribs are identified among traversodontids: 'normal' form, tubercular rib, costal plate, and Y-shaped rib...
2017: PeerJ
https://www.readbyqxmd.com/read/28905690/the-acromiohumeral-centre-edge-angle-a-new-radiographic-measurement-and-its-association-with-rotator-cuff-pathology
#18
Neal Singleton, Lewis Agius, Stephen Andrews
BACKGROUND: Various radiographic measurements that describe humeral head coverage by the acromion and the effect on rotator cuff pathology have been reported. This study aimed to describe and validate a new radiographic measurement, the acromiohumeral centre edge angle (ACEA). METHODS: We compared the ACEA on computed tomography (CT) and plain X-ray to determine whether X-ray is accurate for measuring this angle. We then compared the results from this control population with 107 patients with acute rotator cuff tears...
September 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28898793/displaced-acromion-fracture-a-rare-injury-case-report
#19
Özgür Çiçekli, Abdülhalim Akar, Hüseyin Nevzat Topçu
INTRODUCTION: Acromion fractures are extremely rare. There are no common accepted treatment schemes and fixation methods We aimed to present a case which may contribute to the diagnosis and treatment of acromion fracture in a patient with polytrauma. PRESENTATION OF CASE: Acromion fracture associated with scapula and clavicle fractures was diagnosed in 40 years old patient and treated with open reduction and cannulated screw fixation. The fracture healing was completed without causing subacromial impingement...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28862102/shoulder-motion-assistance-using-a-single-joint-hybrid-assistive-limb-%C3%A2-robot-evaluation-of-its-safety-and-validity-in-healthy-adults
#20
Takeshi Makihara, Hideki Kadone, Shinzo Onishi, Shigeki Kubota, Yasushi Hada, Yukiyo Shimizu, Hiroaki Kawamoto, Yoshiyuki Sankai, Masashi Yamazaki
PURPOSES: To evaluate the feasibility of using the single-joint Hybrid Assistive Limb(®) robot (HAL) to assist with shoulder flexion-extension in healthy adults, and to assess the capacity of the HAL to analyze the bioelectrical signals of muscle activity for shoulder flexion-extension. METHODS: This cross-sectional feasibility study included six healthy adult men with no impairment in shoulder motion. The single-joint HAL was fixed to a custom-designed platform and upper arm attachment, and aligned 3 cm below the acromion process...
September 2017: Journal of Orthopaedic Surgery
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