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https://www.readbyqxmd.com/read/29454599/vascularized-bone-graft-to-the-lunate-combined-with-temporary-scaphocapitate-fixation-for-treatment-of-stage-iii-kienb%C3%A3-ck-disease-a-report-of-the-results-a-minimum-of-2-years-after-surgery
#1
Taiichi Matsumoto, Ryosuke Kakinoki, Ryosuke Ikeguchi, Souichi Ohta, Masao Akagi, Shuichi Matsuda
PURPOSE: To report the outcomes of patients with stage III Kienböck disease treated by vascularized bone graft (VBG) followed by temporary scaphocapitate (SC) fixation, a minimum of 2 years after surgery. METHODS: Twenty-six patients (mean age, 35 years) with stage III Kienböck disease (16 with stage IIIA and 10 with stage IIIB), treated with VBG followed by SC fixation for 4 months, were retrospectively followed for at least 2 years (range, 24-121 months; mean, 61...
February 14, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29448916/tensioning-of-the-radioscaphocapitate-and-long-radio-lunate-ligaments-for-dynamic-radiocarpal-instability
#2
Carin Rubensson, Torsten Johansson, Lars Adolfsson
During 1994-2003, we treated 20 patients with post-traumatic radial-sided wrist pain and dynamic radiocarpal instability. After arthroscopy confirmed no disruption of the radioscaphocapitate ligament and an increased laxity of the ligament, we passed a strip of the radioscaphocapitate ligament through the long radio-lunate ligament. The rationale of this procedure was to increase tension of the two ligaments and to close the space of Poirier. Eighteen patients were assessed after 1-3.7 years (mean 2.5 years)...
January 1, 2018: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29447761/new-neandertal-wrist-bones-from-el-sidr%C3%A3-n-spain-1994-2009
#3
Tracy L Kivell, Antonio Rosas, Almudena Estalrrich, Rosa Huguet, Antonio García-Tabernero, Luis Ríos, Marco de la Rasilla
Twenty-nine carpal bones of Homo neanderthalensis have been recovered from the site of El Sidrón (Asturias, Spain) during excavations between 1994 and 2009, alongside ∼2500 other Neandertal skeletal elements dated to ∼49,000 years ago. All bones of the wrist are represented, including adult scaphoids (n = 6), lunates (n = 2), triquetra (n = 4), pisiforms (n = 2), trapezia (n = 2), trapezoids (n = 5), capitates (n = 5), and hamates (n = 2), as well as one fragmentary and possibly juvenile scaphoid. Several of these carpals appear to belong to the complete right wrist of a single individual...
January 2018: Journal of Human Evolution
https://www.readbyqxmd.com/read/29437062/mid-term-outcomes-of-routine-proximal-row-carpectomy-compared-with-proximal-row-carpectomy-with-dorsal-capsular-interposition-arthroplasty-for-the-treatment-of-late-stage-arthropathy-of-the-wrist
#4
COMPARATIVE STUDY
M P Gaspar, P P Pham, C D Pankiw, S M Jacoby, E K Shin, A L Osterman, P M Kane
AIMS: The aims of this study were to compare the mid-term outcomes of patients with late-stage arthritis of the wrist treated with proximal row carpectomy (PRC) and dorsal capsular interposition (DCI) arthroplasty with a matched cohort treated with routine PRC alone. PATIENTS AND METHODS: A total of 25 arthritic wrists (24 patients) with pre-existing degenerative changes of the proximal capitate and/or the lunate fossa of the radius were treated with PRC + DCI over a ten-year period...
February 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29428246/measurement-of-carpal-alignment-indices-using-3-dimensional-computed-tomography
#5
Ki Won Lee, Joo Yul Bae, Dong-Kyo Seo, Sang Bum Kim, Hyun Il Lee
PURPOSE: This study aimed to establish normal values for wrist carpal alignment measured by 3-dimensional computed tomography (CT) and to show the inter- and intraobserver reliability of this measurement compared with simple radiography. METHODS: The study utilized 3-dimensional CT and simple radiography of wrist joints in 30 asymptomatic volunteers. The wrist position was standardized using a custom-designed positioning device. Three independent observers measured carpal alignment parameters including distal radius articular angle, radiolunate angle, radioscaphoid angle, radiocapitate angle, radius-third metacarpal angle, scapholunate angle, lunocapitate angle, and lunate-third metacarpal angle...
February 7, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29426604/damage-in-a-distal-radius-fracture-model-treated-with-locked-volar-plating-after-simulated-postoperative-loading
#6
Christina Salas, Justin A Brantley, James Clark, Mahmoud Reda Taha, Deana M Mercer, Orrin B Myers
PURPOSE: "Damage" is an engineering term defining a period between a state of material perfection and the onset of crack initiation. Clinically, it is a loss of fixation due to microstructural breakdown, indirectly measured as a reduction of stiffness of the bone-implant construct, normalized by the cross-sectional area and length of the bone. The purpose of this study was to characterize damage in a cadaver model of extra-articular distal radius fracture with dorsal comminution treated using 2-column volar distal radius plates...
February 6, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29395586/a-prospective-observational-assessment-of-unicortical-distal-screw-placement-during-volar-plate-fixation-of-distal-radius-fractures
#7
Agnes Z Dardas, Charles A Goldfarb, Martin I Boyer, Daniel A Osei, Christopher J Dy, Ryan P Calfee
PURPOSE: Although volar plating of the distal radius is performed frequently, the necessity of distal bicortical fixation in the metaphyseal and epiphyseal areas of the distal radius has not been proven. This study aimed primarily to quantify the ability of unicortical distal screws to maintain operative reduction of adult distal radius fractures and secondarily to determine if unicortical screw lengths could be predicted based on anatomical measurements. METHODS: This prospective trial enrolled 75 adult patients undergoing volar locking plate fixation of a unilateral distal radius fracture at a tertiary center...
January 25, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29389704/versatility-of-the-medial-femoral-condyle-flap-for-extremity-reconstruction-and-identification-of-risk-factors-for-nonunion-delayed-time-to-union-and-complications
#8
Nikolas H Kazmers, Stephanie Thibaudeau, Patrick Gerety, Alex G Lambi, Lawrence Scott Levin
BACKGROUND: The medial femoral condyle (MFC) flap has become a popular choice for treatment of small bony defects. We aim to describe outcomes after MFC flap treatment of upper and lower extremity osseous defects and test the null hypothesis that no factors influence risks for nonunion, increased time to union, and complications. METHODS: A retrospective chart review was performed on all patients undergoing MFC free vascularized bone flaps by the senior author between May 2010 and March 2016...
January 31, 2018: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/29383283/arthroscopic-scaphoid-3d-test-for-scapholunate-instability
#9
Fernando Corella, Montserrat Ocampos, Miguel Del Cerro
Background  Patients with scapholunate instability usually have pain in the dorsal wrist. This pain may occur due to the impingement between the scaphoid and the dorsal rim of the radius when the scaphoid is detached from the lunate. This pain appears as the scaphoid is displaced over the dorsal rim of the radius. The arthroscopic scaphoid 3D (dorsal, dynamic, displacement) test is described here to check this pathologic dorsal displacement of the scaphoid. Surgical Technique  The test should be performed both in the radiocarpal and midcarpal joints...
February 2018: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/29366391/fracture-lines-and-comminution-zones-in-ota-ao-type-23c3-distal-radius-fractures-the-distal-radius-map
#10
Abdulhamit Misir, Kahraman Ozturk, Turan Bilge Kizkapan, Kadir Ilker Yildiz, Volkan Gur, Ahmet Sevencan
OBJECTIVE: This study was designed to define fracture lines and comminution zones in OTA/AO 23C3 distal radius fractures from axial computed tomography (CT) images that would influence surgical planning, development of new classifications, and possible implant designs. METHODS: Thirty-four consecutive OTA/AO 23C3 fractures treated by a single surgeon between January 2014 and December 2014 were analyzed. For each fracture, maps of the fracture lines and zones of comminution were drawn...
January 2018: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/29358005/allbutt-of-leeds-and-duchenne-de-boulogne-newly-discovered-insights-on-duchenne-by-a-british-neuropsychiatrist
#11
REVIEW
E H Reynolds, E Broussolle
It is well-established that Guillaume-Benjamin-Amand Duchenne de Boulogne (1806-1875), and Jean-Martin Charcot (1825-1893) were the founding fathers of Parisian and French neurology during the second half of the 19th century, although much more is known about Charcot than about his "master" Duchenne. In Britain, Thomas Clifford Allbutt (1836-1925) was Leeds' most distinguished physician of the 19th century, eventually becoming Regius Professor of Physic at Cambridge. Allbutt's 1860-1861 year of postgraduate study in Paris and his friendship with Duchenne profoundly influenced his own contributions to nervous system and mental diseases, partly in collaboration with his colleague James Crichton-Browne (1840-1938) at the nearby West Riding Lunatic Asylum in Wakefield, Yorkshire...
January 18, 2018: Revue Neurologique
https://www.readbyqxmd.com/read/29326766/dorsal-luno-capitate-impingement-in-a-professional-tennis-player-a-case-report
#12
A Afshar, A Tabrizi
A 30-year old male right handed professional tennis player complained about reduced athletic performance, chronic pain and restricted extension of his right wrist. Lateral radiograph of the right wrist demonstrated an osteophyte projecting from the dorsal lip of the lunate bone. The presence of an osteophyte on the lateral radiograph of the lunate along with the history, clinical examination, intra-operative findings, and post-operative satisfactory result made the diagnosis of dorsal luno-capitate impingement syndrome reasonable...
November 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/29316367/development-of-the-lunate-shaped-caudal-fin-in-white-shark-embryos
#13
Taketeru Tomita, Minoru Toda, Kei Miyamoto, Shin-Ichiro Oka, Keiichi Ueda, Keiichi Sato
The lunate-shaped caudal fin in lamnid sharks is a morphological specialization for their thunniform mode of locomotion, but its developmental process during gestation has been poorly investigated. Observations of 21 embryonic specimens of the white shark (Carcharodon carcharias) revealed that their caudal fin morphology drastically changes from strongly heterocercal to lunate-shaped through ontogeny. This morphological change involves 1) rapid elongation of the ventral lobe, 2) increased upward curvature of the vertebra within the caudal fin, and 3) formation of keels at both lateral sides of the caudal fin base...
January 6, 2018: Anatomical Record: Advances in Integrative Anatomy and Evolutionary Biology
https://www.readbyqxmd.com/read/29310416/medium-term-outcome-of-closed-radial-wedge-osteotomy-of-the-distal-radius-for-preiser-disease-with-concomitant-kienb%C3%A3-ck-disease-two-case-reports-and-a-literature-review
#14
Yuji Tomori, Takuya Sawaizumi, Nanno Mitsuhiko, Shinro Takai
RATIONALE: Idiopathic avascular necrosis of the scaphoid or lunate bone are known as Preiser disease and Kienböck disease, respectively. Although there are reports of avascular necrosis involving more than one carpal bone, concurrent idiopathic avascular necrosis of the scaphoid and lunate bones is rare, with only five cases reported in the English literature (including the two herein). Although the optimum treatment for Preiser disease with concomitant Kienböck disease has not been established, our cases underwent closed radial wedge osteotomy based on the evidence of satisfactory outcomes for treating Kienböck disease...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29305609/does-wrist-laxity-influence-3d-carpal-bone-motion
#15
Gordie Best, Michelle Zec, David Pichora, Robin Kamal, Michael J Rainbow
Previous 2D studies have shown that there is a spectrum of carpal mechanics that varies between row-type motion and column-type motion as a function of wrist laxity. More recent 3D studies have suggested instead that carpal bone motion is consistent across individuals. The purpose of this study was to use 3D methods to determine whether carpal kinematics differ between stiffer wrists and wrists with higher laxity. Wrist laxity was quantified using a goniometer in 10 subjects by measuring passive wrist flexion-extension range of motion...
January 5, 2018: Journal of Biomechanical Engineering
https://www.readbyqxmd.com/read/29299502/evaluation-of-normal-ranges-of-wrist-radiologic-indexes-in-mashhad-population
#16
Tohid Vaezi, Golnaz Ghayyem Hassankhani, Mohammad H Ebrahimzadeh, Ali Moradi
Hand and wrist radiographic indexes such as radial inclination, ulnar variance, carpal height ratio, and radial tilt play an important role in the diagnosis and management of medical disorders, so they should be modified regarding the population and race difference. This study aims to compare the normal radiologic wrist indexes in Mashhad population with other existing databases and define some of the factors that may influence the normal radiographic indexes. A total of 100 healthy participants were enrolled in this prospective cross-sectional study...
November 2017: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/29289661/notch-signaling-is-impaired-during-inflammation-in-a-lunatic-fringe-dependent-manner
#17
Claudio Derada Troletti, Melissa A Lopes Pinheiro, Marc Charabati, Elizabeth Gowing, Bert van Het Hof, Susanne M A van der Pol, Dirk Geerts, Alexandre Prat, Ruud D Fontijn, Wendy W Unger, Helga E de Vries
The blood-brain barrier (BBB) assures brain homeostasis through the specialized function of brain endothelial cells (BECs). Dysfunction of the BBB due to inflammatory processes is associated with several neurological disorders, including multiple sclerosis (MS). Understanding the mechanisms that underlie these processes may ultimately lead to new therapeutic strategies to restore BBB function, thereby fighting disease progression. In this study, we demonstrate for the first time a critical role of the Notch signaling pathway in the function of the BBB under resting and inflammatory conditions...
December 28, 2017: Brain, Behavior, and Immunity
https://www.readbyqxmd.com/read/29282524/perilunate-fracture-dislocations-clinical-and-radiological-results-of-21-cases
#18
Thomas Meszaros, Esther Vögelin, Lukas Mathys, Franck Marie Leclère
BACKGROUND: Perilunate dislocations and fracture-dislocations are a subcategory of the carpal instability complex. Herein, we report our university hospital experience with this complex injury. The goal of our study was to find predictive factors and quantify the development of arthritis and lunate necrosis. We tried to measure the impact of arthritis on hand function. METHODS: Between January 2000 and December 2014, 21 patients underwent surgery for perilunate dislocations and perilunate fracture-dislocations of the wrist in our tertiary university center...
February 2018: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/29275805/from-dental-to-mental-institutions-did-hypoxic-anesthetics-by-dental-associations-add-more-brain-injured-patients-to-america-s-insane-asylums
#19
Matthew L Edwards, George S Bause
Though most patients survived the hypoxic challenge, some patients likely suffered asphyxial brain damage from GQ Colton's nitrous-oxide techniques and were admitted to insane or lunatic asylums.
October 2017: Journal of Anesthesia History
https://www.readbyqxmd.com/read/29244670/kienb%C3%A3-ck-disease-in-a-patient-with-congenital-synostosis-of-the-lunate-and-the-triquetrum-a-case-report
#20
Elissa S Finkler, Terry R Light
CASE: We describe the case of a 40-year-old man with Minnaar type-III congenital synostosis of the lunate and the triquetrum who presented with Lichtman stage-I Kienböck disease. Surgical treatment consisted of capitate shortening with a capitate-hamate fusion. CONCLUSION: This case demonstrates the tenuous regional nature of the vascularity to the lunate, even in the setting of a complete lunotriquetral synostosis.
April 2017: JBJS Case Connector
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