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https://www.readbyqxmd.com/read/29338912/-surgical-outcomes-of-traumatic-cervical-fractures-in-patients-with-ankylosing-spondylitis
#1
Alberto Isla Guerrero, Beatriz Mansilla Fernández, Borja Hernández Garcia, Álvaro Gómez de la Riva, María Luisa Gandía González, Elena Isla Paredes
OBJECTIVE: Ankylosing spondylitis is an inflammatory rheumatic disease mainly affecting the axial skeleton. The rigid spine may secondarily develop osteoporosis, further increasing the risk of spinal fracture. In this study, we reviewed fractures in patients with ankylosing spondylitis that had been clinically diagnosed to better define the mechanism of injury, associated neurological deficit, predisposing factors, and management strategies. METHODS: Between January 2004 and December 2014, 6 patients with ankylosing spondylitis and neurological complications after injuries were treated...
January 12, 2018: Neurocirugía
https://www.readbyqxmd.com/read/29331975/is-postoperative-bracing-after-pedicle-screw-fixation-of-spine-fractures-necessary-study-protocol-of-the-ornot-study-a-randomised-controlled-multicentre-trial
#2
Arjen Johannes Smits, Jaap Deunk, Agnita Stadhouder, Mark Cornelis Altena, Diederik Hendrik Ruth Kempen, Frank Willem Bloemers
INTRODUCTION: The most common surgical treatment of traumatic spine fractures is through a posterior approach using pedicle screws and rods. Postoperative treatment protocols including the use of postoperative orthoses however differ between hospitals and surgeons. A three-point hyperextension orthosis is designed to support proper posture and unload the anterior column. Some motion remains when wearing an orthosis, and its main value in postoperative treatment is therefore believed to be pain relief and patient confidence...
January 13, 2018: BMJ Open
https://www.readbyqxmd.com/read/29330341/biomechanics-of-coupled-motion-in-the-cervical-spine-during-simulated-whiplash-in-patients-with-pre-existing-cervical-or-lumbar-spinal-fusion-a-finite-element-study
#3
H Huang, R W Nightingale, A B C Dang
OBJECTIVES: Loss of motion following spine segment fusion results in increased strain in the adjacent motion segments. However, to date, studies on the biomechanics of the cervical spine have not assessed the role of coupled motions in the lumbar spine. Accordingly, we investigated the biomechanics of the cervical spine following cervical fusion and lumbar fusion during simulated whiplash using a whole-human finite element (FE) model to simulate coupled motions of the spine. METHODS: A previously validated FE model of the human body in the driver-occupant position was used to investigate cervical hyperextension injury...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29325837/outcomes-of-total-knee-arthroplasty-in-degenerative-osteoarthritic-knee-with-genu-recurvatum
#4
Seung-Suk Seo, Chang-Wan Kim, Chang-Rack Lee, Jin-Hyuk Seo, Do-Hun Kim, Ok-Gul Kim
BACKGROUND: This study aimed to assess the incidence of genu recurvatum without neuromuscular disorders in knees that underwent navigation-assisted total knee arthroplasty (TKA), to evaluate short-term radiologic and clinical results of navigation-assisted TKA in genu recurvatum, and to evaluate differences in results according to the degree of pre-operative hyperextension and type of implant and insert. METHODS: This study retrospectively reviewed 510 knees that underwent navigation-assisted TKA from January 2005 to December 2011...
January 9, 2018: Knee
https://www.readbyqxmd.com/read/29310380/traumatic-c1-2-posterolateral-dislocation-with-dens-fracture-injury-of-the-transverse-atlantal-ligament-and-unilateral-facet-fracture-with-subluxation-of-c6-7-a-case-report
#5
Jong-Beom Park, Sung Shik Kang, Jin S Yeom
RATIONALE: Traumatic C1-2 dislocation associated with contiguous or noncontiguous cervical spine injury is rare. Moreover, there have been no reports describing traumatic C1-2 dislocation associated with multiple contiguous and noncontiguous cervical injuries. PATIENT CONCERNS: The authors present a case of a 20-year-old male with painful limitation of motion of the neck. This complex cervical injury occurred due to hyperextension of the head in a rotated position...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29286962/fractures-of-the-bilateral-c2-neurocentral-and-lateral-dental-synchondroses-with-kyphotic-c1-c2-subluxation-in-a-3-year-old-girl-a-description-of-a-rare-fracture-pattern-and-its-treatment-a-case-report
#6
Lucienne Gautier, Christoph Aufdenblatten, Stefan Dierauer, Leonhard Ramseier, Luca Mazzone, Hanspeter Huber, Mazda Farshad
CASE: Spinal fractures are rare in young children. Because spinal anatomy and biomechanics differ in children and adults, knowledge of the deviations of the juvenile spine is necessary for adequate treatment. We present the case of a young girl with an unusual C2 fracture that included rupture of both of the neurocentral and lateral dental synchondroses, with an opening of the synchondroses and a caudal dislocation of both vertebral arches following a head-on motor vehicle collision. The whole body and apex of the dens was displaced anteriorly and cranially with a kyphotic angulation of 34°...
October 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29282397/swan-neck-deformity-mimicking-claw-hand-caused-by-arthritis-in-leprosy
#7
Hendra Gunawan, Nia Srie Haryati, Oki Suwarsa
Swan neck deformity is a hyperextension of the proximal interphalangeal (PIP) joints and flexion of the distal interphalangeal (DIP) joints. Claw hand is a hyperextension of the metacarpal joints and flexion of the PIP joints, accompanied by reduced motor strength. A 23-year-old female, who was released from leprosy treatment, presented with a bend of the second to fifth fingers of both hands. There was hyperextension of the PIP joints and flexion of the DIP joints from the second to fifth fingers of both hands, thickening of the ulnar nerves, and hypoesthesia without motor impairment of the fourth and fifth fingers of both hands...
September 2017: Case Reports in Dermatology
https://www.readbyqxmd.com/read/29260112/persistent-pseudomyopia-following-a-whiplash-injury-in-a-previously-emmetropic-woman
#8
Fintan E Hughes, Maxwell P Treacy, Emma S Duignan, Paul B Mullaney
Purpose: Accommodative spasm, which manifests as ciliary muscle spasm, convergent strabismus or miosis, is a recognised consequence of head trauma. In whiplash cases, cervical spine hyperextension poses a risk of contra-coup injury and brainstem trauma, and is known to affect the visual system. However, to date, no cases of accommodative spasm due to whiplash injury have been reported. Observations: We present the case of a 34-year-old female who developed sudden onset blurred distance vision after a rear impact car crash, having previously been emmetropic...
December 2017: American Journal of Ophthalmology Case Reports
https://www.readbyqxmd.com/read/29247552/ehlers-danlos-syndrome-in-a-young-woman-with-anorexia-nervosa-and-complex-somatic-symptoms
#9
Michelle Lee, Mattias Strand
The Ehler-Danlos syndromes (EDS) are a group of clinically heterogeneous connective tissue disorders characterized by joint hypermobility, hyperextensibility of the skin, and a general connective tissue fragility that can induce symptoms from multiple organ systems. We present a case of comorbid anorexia nervosa and EDS in a 23-year old woman with a multitude of somatic symptoms that were initially attributed to the eating disorder but that were likely caused by the underlying EDS. Various EDS symptoms, such as gastrointestinal complaints, smell and taste abnormalities, and altered somatosensory awareness may resemble or mask an underlying eating disorder, and vice versa...
December 16, 2017: International Journal of Eating Disorders
https://www.readbyqxmd.com/read/29226163/diagnostic-accuracy-of-3-physical-examination-tests-in-the-assessment-of-hip-microinstability
#10
Daniel J Hoppe, Jeremy N Truntzer, Lauren M Shapiro, Geoffrey D Abrams, Marc R Safran
Background: Hip microinstability is a diagnosis gaining increasing interest. Physical examination tests to identify microinstability have not been objectively investigated using intraoperative confirmation of instability as a reference standard. Purpose: To determine the test characteristics and diagnostic accuracy of 3 physical examination maneuvers in the detection of hip microinstability. Study Design: Cohort study (diagnosis); Level of evidence, 2...
November 2017: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29208202/-deformities-of-the-finger-joints
#11
Pernille Nygaard Vedel, Jørgen Tranum-Jensen, Lars B Dahlin, Elisabeth Brogren, Niels Henrik Søe
Extension of the fingers is a complex act. Boutonnière deformity is defined by flexion at the proximal inter-phalangeal (PIP) joint and hyperextension at the distal interphalangeal (DIP) joint due to disruption of the central slip of the extensor tendon. Swan neck deformity is defined by hyperextension at the PIP joint and flexion at the DIP joint, and the pathology is divided into intrinsic, extrinsic, and articular. The deformities are a result of imbalance of the tendons and ligaments in the fingers. Treatment is depending on the underlying cause and includes surgery and non-operative treatment...
November 27, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/29206923/vascular-abnormalities-in-the-placenta-of-chst14-fetuses-implications-in-the-pathophysiology-of-perinatal-lethality-of-the-murine-model-and-vascular-lesions-in-human-chst14-d4st1-deficiency
#12
Takahiro Yoshizawa, Shuji Mizumoto, Yuki Takahashi, Shin Shimada, Kazuyuki Sugahara, Jun Nakayama, Shin'ichi Takeda, Yoshihiro Nomura, Yuko Nitahara-Kasahara, Takashi Okada, Kiyoshi Matsumoto, Shuhei Yamada, Tomoki Kosho
Collagen is one of the most important components of the extracellular matrix that is involved in the strength of tissues, cell adhesion, and cell proliferation. Mutations in several collagen and post-translational modification enzyme genes cause Ehlers-Danlos syndrome (EDS) characterized by joint and skin hyperextensibility as well as fragility of various organs. Carbohydrate sulfotransferase 14/dermatan 4-O-sulfotransferase-1 (CHST14/D4ST1) is a critical enzyme for biosynthesis of dermatan sulfate, a side chain of various proteoglycans including biglycan that regulates collagen fibrils through their interaction...
December 1, 2017: Glycobiology
https://www.readbyqxmd.com/read/29179604/anterior-screw-fixation-in-type-ii-odontoid-fracture-in-an-18-month-old-girl-a-case-report-and-review-of-the-literature
#13
Majid Reza Farrokhi, Hamid Rezaei, Farnaz Farrokhi
Odontoid fractures are among the rare cervical spine injuries in pediatric population and thus the optimal management of these injuries is controversial. The increasing trend in road traffic accidents and improvement in diagnostic modalities has led to an increased detection of odontoid fractures in pediatric population. We herein report type II odontoid fracture in an 18-month-old girl after falling off the motorcycle leading to hyperextension and flexion injury. She was successfully treated with anterior odontoid screw fixation followed by immobilization with hard collar for 2 months...
November 28, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29178241/rare-fmr1-gene-mutations-causing-fragile-x-syndrome-a-review
#14
Adam F Sitzmann, Robert T Hagelstrom, Flora Tassone, Randi J Hagerman, Merlin G Butler
Fragile X syndrome (FXS) is the most common inherited form of intellectual disability, typically due to CGG-repeat expansions in the FMR1 gene leading to lack of expression. We identified a rare FMR1 gene mutation (c.413G>A), previously reported in a single patient and reviewed the literature for other rare FMR1 mutations. Our patient at 10 years of age presented with the classical findings of FXS including intellectual disability, autism, craniofacial findings, hyperextensibility, fleshy hands, flat feet, unsteady gait, and seizures but without the typical CGG-repeat expansion...
November 27, 2017: American Journal of Medical Genetics. Part A
https://www.readbyqxmd.com/read/29174476/brown-sequard-syndrome-caused-by-hyperextension-in-a-patient-with-atlantoaxial-subluxation-due-to-an-os-odontoideum
#15
Dong-Yeong Lee, Soon-Taek Jeong, Tae-Ho Lee, Dong-Hee Kim
Brown-Sequard syndrome is an uncommon complication of atlantoaxial arthrodesis. A 50-year-old female visited our emergency department after falling from a ladder. Radiologic evaluations revealed chronic C1-2 instability with acute spinal cord injury. The day after atlantoaxial fusion was performed, she developed left-sided motor weakness and the loss of right-sided pain and temperature sensation. Based on physical examination and radiologic findings, we diagnosed her as having Brown-Sequard syndrome. Spine surgeons performing this procedure should therefore consider Brown-Sequard syndrome if a patient displays signs of postoperative hemiplegia...
November 23, 2017: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/29164381/assessment-of-micro-dose-biplanar-radiography-in-lower-limb-measurements-in-children
#16
Héloïse Lerisson, Élisa Amzallag-Bellenger, Aurélie Cebulski-Delebarre, Eric Nectoux, Geoffrey Desmulliez, Alain Duhamel, Elodie Drumez, Bernard Herbaux, Nathalie Boutry
OBJECTIVES: To evaluate in children microdose protocol compared with low dose for lower limb alignment (LLA) measurements on biplanar radiography. METHODS: Children 6 years or older were included. Height, weight and hip width were measured prior to imaging. Hip width allowed classifying children into morphotype M1 (width <25 cm), M2 (25-35 cm) or M3 (>35 cm) corresponding to predefined acquisition parameters (kV, mA, tube speed). Micro- and low-dose protocols were used alternately, with simultaneous acquisition of frontal and lateral radiographs...
November 21, 2017: European Radiology
https://www.readbyqxmd.com/read/29150740/severe-rigid-scheuermann-kyphosis-in-adult-patients-correction-with-posterior-only-approach
#17
B Mirzashahi, M Chehrassan, A Arfa, M Farzan
PURPOSE: Scheuermann kyphosis is the most common structural kyphosis among adolescence and young people. Surgical treatment may be performed through combined anterior and posterior or posterior-only approaches; to our knowledge, the efficacy of posterior-only approach as less invasive procedure is not well studied in case of severe rigid Scheuermann kyphosis. MATERIALS AND METHODS: Eighteen patients with severe rigid Scheuermann kyphosis operated through only posterior approach from 2013 to 2016 were evaluated...
November 17, 2017: Musculoskeletal Surgery
https://www.readbyqxmd.com/read/29110218/cervical-sagittal-balance-a-biomechanical-perspective-can-help-clinical-practice
#18
REVIEW
Avinash G Patwardhan, Saeed Khayatzadeh, Robert M Havey, Leonard I Voronov, Zachary A Smith, Olivia Kalmanson, Alexander J Ghanayem, William Sears
PURPOSE: In this article, we summarize our work on understanding the influence of cervical sagittal malalignment on the mechanics of the cervical spine. METHODS: Biomechanical studies were performed using an ex vivo laboratory model to study the kinematic and kinetic response of human cervical spine specimens in the setting of cervical sagittal imbalance. The model allowed controlled variations of C2-C7 Sagittal Vertical Alignment (C2-C7 SVA) and T1-Slope so that clinically relevant sagittally malaligned profiles could be prescribed, while maintaining horizontal gaze, and their biomechanical consequences studied...
November 6, 2017: European Spine Journal
https://www.readbyqxmd.com/read/29105590/swan-neck-deformity-due-to-chronic-radial-collateral-ligament-injury-of-the-little-finger-proximal-interphalangeal-joint
#19
Yoshitaka Hamada, Hiroaki Takai, Ryousuke Satoh, Naohito Hibino, Yukiko Ueda, Yoshitaka Minamikawa
We present seven cases of a relatively rare swan neck deformity resulting from chronic radial collateral ligament (RCL) injury of the proximal interphalangeal (PIP) joint in the little finger. All patients were middle-aged women (mean 51 years old, range 42-55), and the duration between the initial injury and surgery was 20 years (range 5-40). The chief complaint was painful snapping of the PIP joint. All patients had hyperextension and ulnar deviation of the PIP joint with mobile swan neck deformities that had not improved with conservative treatment...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29100001/effects-of-anterior-closing-wedge-tibial-osteotomy-on-anterior-cruciate-ligament-force-and-knee-kinematics
#20
Kent T Yamaguchi, Edward C Cheung, Keith L Markolf, Daniel V Boguszewski, Justin Mathew, Christopher J Lama, David R McAllister, Frank A Petrigliano
BACKGROUND: A certain percentage of patients undergoing anterior cruciate ligament (ACL) reconstruction will experience graft failure, and there is mounting evidence that an increased posterior tibial slope (PTS) may be a predisposing factor. Theoretically, under tibiofemoral compression force (TFC), a reduced PTS would induce less anterior tibial translation (ATT) and lower ACL force. HYPOTHESIS: Ten-degree anterior closing wedge osteotomy of the proximal tibia will significantly reduce ACL force and alter knee kinematics during robotic testing...
November 1, 2017: American Journal of Sports Medicine
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