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https://www.readbyqxmd.com/read/28332045/an-unusual-mechanism-of-coracoid-fracture-in-a-beginner-golfer
#1
Ju Hong Lee, Jung Ryul Kim, Sung Il Wang
Golfers may injure themselves as a result of repetitive asymmetrical loads exerted on the body by poor swing mechanics. If the repetitive sub-maximal loading is not removed, this repetitive loading will exceed the adaptive capacity of bone, eventually resulting in a stress fracture. Stress fracture of the scapula due to golfing is extremely rare. Only two cases of acromion fracture have been reported. A rare case of nontraumatic coracoid fracture in a 50-year-old female beginner golfer is reported here. The mechanism of injury is also discussed...
March 22, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/28331927/bilateral-shoulder-arthrodesis-in-a-pekinese-using-three-dimensional-printed-patient-specific-osteotomy-and-reduction-guides
#2
Bill Oxley
OBJECTIVE: To report the use of computer-aided design software for virtual surgical planning and design of three-dimensional printed patient-specific osteotomy and reduction guides for facilitation of bilateral shoulder arthrodesis in a dog. METHODS: A three-year-old male entire Pekinese was presented unable to walk due to bilateral severe medial shoulder instability. Computed tomographic data was processed to yield three-dimensional mesh representations of the humeri and scapulae which could be manipulated in computer-aided design software...
March 23, 2017: Veterinary and Comparative Orthopaedics and Traumatology: V.C.O.T
https://www.readbyqxmd.com/read/28328567/effects-of-a-simulated-game-on-upper-extremity-pitching-mechanics-and-muscle-activations-among-various-pitch-types-in-youth-baseball-pitchers
#3
Gretchen D Oliver, Hillary Plummer, Lisa Henning, Michael Saper, Gabrielle Glimer, Allison Brambeck, James R Andrews
BACKGROUND: Throwing requires proper stability and orientation of the pelvis and scapula for efficient energy transfer during pitching. Fatigue of the pelvis and scapular musculature throughout the course of a game can impair pitching performance, and place excessive demands on the throwing arm leading to injury. The purpose of this study was to examine differences in pelvis, torso, and upper extremity pitching mechanics and muscle activations between the fastball, change-up, and curveball pitches in youth baseball pitchers following a simulated game...
March 21, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28322117/effect-of-overlapping-operations-on-outcomes-in-microvascular-reconstructions-of-the-head-and-neck
#4
Larissa Sweeny, Eben L Rosenthal, Tyler Light, Jessica Grayson, Daniel Petrisor, Scott H Troob, Benjamin J Greene, William R Carroll, Mark K Wax
Objective To compare outcomes after microvascular reconstructions of head and neck defects between overlapping and nonoverlapping operations. Study Design Retrospective cohort study. Setting Tertiary care center. Subjects and Methods Patients undergoing microvascular free tissue transfer operations between January 2010 and February 2015 at 2 tertiary care institutions were included (n = 1315). Patients were divided into 2 cohorts by whether the senior authors performed a single or consecutive microvascular reconstruction (nonoverlapping; n = 773, 59%) vs performing overlapping microvascular reconstructions (overlapping; n = 542, 41%)...
March 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28319883/the-influence-of-a-depressed-scapular-alignment-on-upper-limb-neural-tissue-mechanosensitivity-and-local-pressure-pain-sensitivity
#5
Patricia Martínez-Merinero, Enriqe Lluch, Tomas Gallezo-Izquierdo, Daniel Pecos-Martín, Gustavo Plaza-Manzano, Susana Nuñez-Nagy, Deborah Falla
BACKGROUND: A depressed scapular alignment could lead to prolonged and repetitive stress or compression of the brachial plexus, resulting in sensitization of neural tissue. However, no study has investigated the influence of alignment of the scapulae on sensitization of upper limb neural tissue in otherwise asymptomatic people. In this case-control study, we investigate the influence of a depressed scapular alignment on mechanosensitivity of the upper limb peripheral nervous system as well as pressure pain thresholds (PPT)...
March 10, 2017: Musculoskelet Sci Pract
https://www.readbyqxmd.com/read/28318740/upper-limb-dimelia
#6
Takehiko Takagi, Ayano Nojiri, Atsuhito Seki, Shinichiro Takayama, Masahiko Watanabe
A patient with upper limb dimelia including a double scapula, humerus, radius, and ulna, 11 metacarpals and digits (5 on the superior side, 6 on the inferior side) was treated with a simple amputation of the inferior limb resulting in cosmetic improvement and maintenance of range of motion in the preserved limb. During the amputation, the 2 limbs were found to be anatomically separate except for the ulnar nerve, which, in the superior limb, bifurcated into the sensory branch of radial nerve in the inferior limb, and the brachial artery, which bifurcated into the radial artery...
March 16, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28300741/unusual-route-of-a-bullet-from-scapula-to-eye
#7
Elif Demirkilinc Biler, Melis Palamar Onay, Naim Ceylan, Bilge Yildirim Ceper
Herein, an awkward case of globe perforation with a bullet-entering from the right posterior scapular region and leaving the body from the right orbit through the eye - is reported. Route of the bullet could be devastating - as it passed through the neck and the maxillofacial region-however by chance no vital damage occurred. Its path was assessed by plain radiography and computed tomography scans. Sometimes prediction of the trajectory is very difficult without additional radiological investigations. Especially, in the case of any high velocity projectile wounding, physician must be aware of the fact that the bullet's course will not be a linear but most probably a complicated one...
January 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28298060/a-cadaveric-model-evaluating-the-influence-of-bony-anatomy-and-the-effectiveness-of-partial-scapulectomy-on-decompression-of-the-scapulothoracic-space-in-snapping-scapula-syndrome
#8
Dimitri S Tahal, J Christoph Katthagen, Daniel Cole Marchetti, Jacob D Mikula, Scott R Montgomery, Alex Brady, Grant J Dornan, Peter J Millett
BACKGROUND: Snapping scapula syndrome (SSS) is caused by bony and/or soft tissue impingement in the scapulothoracic articulation. Surgical resection of the superomedial angle (SMA) plus bursectomy can provide relief in most cases; however, the amount needed to achieve adequate scapulothoracic space decompression (SSD) is unknown. PURPOSE: The aim of this study was to evaluate the effectiveness of partial scapulectomy and the influence of bony anatomy on SSD. It was hypothesized that the anterior offset and costomedial angle would correlate with the amount of bony resection needed to achieve adequate SSD...
February 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28293511/de-novo-reconstruction-of-a-hybrid-patella-by-staged-fabrication-of-a-microvascular-bone-transplant-with-an-osteointegrated-prosthetic-socket
#9
Goetz A Giessler, Christian Hendrich
Total patellectomy is sometimes unavoidable but usually results in severely impaired function, pain, and instability in the affected knee. Any patellar prosthetic solutions rely on a certain amount of remaining bone and therefore are not applicable after total patellectomy. Traditionally, reconstruction of a neopatella by avascular or allogeneic bone grafts is hampered by mechanical failure, resorption, or infection. We developed a new, 3-stage approach to reconstruct a hybrid patella composed of a revascularized scapula tip transplant fabricated with a prosthetic socket...
December 2016: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28291570/refining-the-indications-for-scapula-tip-in-mandibular-reconstruction
#10
M W Ho, J S Brown, R J Shaw
Mandibular reconstruction in osteoradionecrosis or salvage surgery can often be complicated by the lack of suitable recipient vessels in the ipsilateral neck and the associated requirement for significant extraoral skin reconstruction. The scapula tip with its long vascular pedicle and option of a chimeric soft tissue component offers a versatile reconstructive solution in such cases. This article reports four consecutive cases of mandibular reconstruction with poor ipsilateral vascular options and additional soft tissue requirements in which the scapula tip was justified and preferred...
March 10, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28285293/infantile-cortical-hyperostosis-of-scapula-presenting-as-pseudoparalysis-in-an-infant
#11
Venkateswari Ramesh, Janani Sankar
No abstract text is available yet for this article.
February 15, 2017: Indian Pediatrics
https://www.readbyqxmd.com/read/28279851/the-sensitivity-of-shoulder-muscle-and-joint-force-predictions-to-changes-in-joint-kinematics-a-monte-carlo-analysis
#12
Wen Wu, Peter Vee Sin Lee, David C Ackland
Kinematics of the shoulder girdle obtained from non-invasive measurement systems such as video motion analysis, accelerometers and magnetic tracking sensors has been shown to be adversely affected by instrumentation measurement errors and skin motion artefact. The degree to which musculoskeletal model calculations of shoulder muscle and joint loading are influenced by variations in joint kinematics is currently not well understood. A three-dimensional musculoskeletal model of the upper limb was used to evaluate the sensitivity of shoulder muscle and joint force...
March 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/28277467/high-energy-pediatric-scapula-fractures-and-their-associated-injuries
#13
Steven F Shannon, Nicholas M Hernandez, Stephen A Sems, Annalise N Larson, Todd A Milbrandt
OBJECTIVES: The purpose of this study was to evaluate pediatric scapula fractures occurring in high-energy motorized vehicle accidents and their associated injury patterns in a pediatric patient population. METHODS: One thousand nine hundred sixty-eight pediatric patients who presented after either on-road or off-road motorized vehicle accidents between 1996 and 2015 were retrospectively reviewed. Thirty-eight patients were found to have scapula fractures and the remaining 1930 were identified as controls...
March 8, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28275882/management-of-chronic-unstable-acromioclavicular-joint-injuries
#14
REVIEW
Luis Natera Cisneros, Juan Sarasquete Reiriz
The acromioclavicular joint represents the link between the clavicle and the scapula, which is responsible for the synchronized dynamic of the shoulder girdle. Chronic acromioclavicular joint instability involves changes in the orientation of the scapula, which provokes cinematic alterations that might result in chronic pain. Several surgical strategies for the management of patients with chronic and symptomatic acromioclavicular joint instability have been described. The range of possibilities includes anatomical and non-anatomical techniques, open and arthroscopy-assisted procedures, and biological and synthetic grafts...
March 8, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28274475/effect-of-various-upper-limb-multibody-models-on-soft-tissue-artefact-correction-a-case-study
#15
Alexandre Naaim, Florent Moissenet, Sonia Duprey, Mickaël Begon, Laurence Chèze
Soft tissue artefacts (STA) introduce errors in joint kinematics when using cutaneous markers, especially on the scapula. Both segmental optimisation and multibody kinematics optimisation (MKO) algorithms have been developed to improve kinematics estimates. MKO based on a chain model with joint constraints avoids apparent joint dislocation but is sensitive to the biofidelity of chosen joint constraints. Since no recommendation exists for the scapula, our objective was to determine the best models to accurately estimate its kinematics...
January 31, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/28273959/morphometric-evaluation-of-adult-acromion-process-in-north-indian-population
#16
Susmita Saha, Neelam Vasudeva
INTRODUCTION: Dimensions of acromion process are important to show linkage to the shoulder girdle pathologies. Also morphometric analysis of acromion process would be helpful for surgeons while performing surgical procedures on the shoulder joint. AIM: The purpose of this present study was to observe the detailed morphometric evaluation of adult acromion processes in North Indian population because different morphometric dimensions play an important role in various disorders of the shoulder, particularly sub acromial impingement syndrome...
January 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28272336/development-of-portable-digital-radiography-system-with-a-device-for-monitoring-x-ray-source-detector-angle-and-its-application-in-chest-imaging
#17
Tae-Hoon Kim, Dong-Woon Heo, Chang-Won Jeong, Jong-Hyun Ryu, Hong Young Jun, Seung-Jun Han, Taeuk Ha, Kwon-Ha Yoon
This study developed a device measuring the X-ray source-detector angle (SDA) and evaluated the imaging performance for diagnosing chest images. The SDA device consisted of Arduino, an accelerometer and gyro sensor, and a Bluetooth module. The SDA values were compared with the values of a digital angle meter. The performance of the portable digital radiography (PDR) was evaluated using the signal-to-noise (SNR), contrast-to-noise ratio (CNR), spatial resolution, distortion and entrance surface dose (ESD). According to different angle degrees, five anatomical landmarks were assessed using a five-point scale...
March 7, 2017: Sensors
https://www.readbyqxmd.com/read/28269632/in-vitro-identification-of-shoulder-joint-and-muscle-dynamics-based-on-motion-capture-and-musculoskeletal-computation
#18
Akihiko Murai, Yusuke Kawano, Ko Ayusawa, Mitsunori Tada, Noboru Matsumura, Takeo Nagura
Dynamics properties of shoulder joint and muscle are experimentally identified under different musculoskeletal conditions for a digital human model with accurate dynamics. Passive swing motions of scapula and upper limb bones in cadaveric specimen with and without muscles are measured by an optical motion capture system. External forces that are applied to the scapula bone are simultaneously measured by a force plate. The dynamics identification process consists of 3 steps: 1) identify the inertial parameters of the cadaveric specimen with and without muscles respectively, 2) identify the viscosity of the glenohumeral joint from the specimen without muscles, and 3) identify the viscosity of the shoulder muscles from the specimen with muscles and the identified joint viscosity...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28257561/functional-morphology-of-the-douc-langur-pygathrix-spp-scapula
#19
Katie E Bailey, Susan E Lad, James D Pampush
Most colobine monkeys primarily move through their arboreal environment quadrupedally. Douc langurs (Pygathrix spp.), however, are regularly observed to use suspensory behaviors at the Endangered Primate Rescue Center (EPRC) in Northern Vietnam. Previous work has linked variation in scapular morphology to different modes of primate arboreal locomotion. Here we investigate whether the shape of the Pygathrix scapula resembles obligate brachiators (gibbons) or obligate arboreal quadrupeds (other cercopithecoids)...
March 3, 2017: American Journal of Primatology
https://www.readbyqxmd.com/read/28251072/novel-technique-for-a-symptomatic-subscapularis-herniation-through-a-scapu-lar-defect
#20
Luis Grau, Kevin Chen, Ali A Alhandi, Benjamin Goldberg
Fractures of the scapula are rare and have been reported to account for only 1% of all fractures and 3%-5% of upper extremity fractures. Several studies have reported successful outcomes with non-operative treatment of scapula fractures. Although non-operative treatments are successful in a very high percentage of patients, very few cases of non-union of scapular body fractures have been reported. In our review of the literature, we found two case reports of scapular body fractures developed into non-unions...
February 18, 2017: World Journal of Orthopedics
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