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https://www.readbyqxmd.com/read/29650378/long-term-clinical-outcome-after-titanium-lunate-arthroplasty-for-kienb%C3%A3-ck-disease
#1
Timo Viljakka, Kaj Tallroth, Martti Vastamäki
PURPOSE: Titanium lunate arthroplasty (TLA) for Kienböck disease was introduced in 1984 to address the silicone-wear particle problem common to silicone lunate implants. We sought to study the outcome of TLA. METHODS: We identified 11 patients from our hospital database who had undergone TLA between 2001 and 2010. We evaluated pain, range of motion (ROM), function, and radiological outcome at a mean 11 years after surgery. We compared preoperative ROM and radiological findings with final follow-up in the ipsilateral wrist and also made comparisons with the contralateral wrists...
April 9, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29644422/-etiology-diagnostics-and-classification-of-lunate-bone-necrosis
#2
REVIEW
T Lögters, C Büren, J Windolf
Kienböck's disease, also known as avascular necrosis of the lunate bone describes the slowly progressive osteonecrosis of the lunate bone with secondary development of osteoarthritis and carpal collapse. In order to emphasize the atraumatic origin of the disease, this is normally referred to as aseptic, idiopathic or avascular lunate necrosis. There are thought to be a number of factors predisposing to Kienböck's disease, such as ulnar negative variance, the shape of the lunate itself and various types of vascular anatomy...
April 11, 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/29629872/radical-and-lunatic-fringes-modulate-notch-ligands-to-support-mammalian-intestinal-homeostasis
#3
Preetish Kadur Lakshminarasimha Murthy, Tara Srinivasan, Matthew S Bochter, Rui Xi, Anastasia Kristine Varanko, Kuei-Ling Tung, Fatih Semerci, Keli Xu, Mirjana Maletic-Savatic, Susan E Cole, Xiling Shen
Notch signalling maintains stem cell regeneration at the mouse intestinal crypt base and balances the absorptive and secretory lineages in the upper crypt and villus. Here we report the role of Fringe family of glycosyltransferases in modulating Notch activity in the two compartments. At the crypt base, RFNG is enriched in the Paneth cells and increases cell surface expression of DLL1 and DLL4. This promotes Notch activity in the neighbouring Lgr5 + stem cells assisting their self-renewal. Expressed by various secretory cells in the upper crypt and villus, LFNG promotes DLL surface expression and suppresses the secretory lineage ...
April 9, 2018: ELife
https://www.readbyqxmd.com/read/29624658/primary-visual-cortex-in-neandertals-as-revealed-from-the-occipital-remains-from-the-el-sidr%C3%A3-n-site-with-emphasis-on-the-new-sd-2300-specimen
#4
Antonio García-Tabernero, Angel Peña-Melián, Antonio Rosas
The comparative analysis of the endocranial surface of the El Sidrón new occipital fragment SD-2300 shows meaningful differences in the configuration of the occipital pole region between neandertals and anatomically modern humans (AMH). The particular asymmetries found in neandertals in the venous sinus drainage and the petalial patterns are recognizable in this new specimen as well. In addition, the supra- and infracalcarine fossae of the occipital pole region appear to deviate obliquely from the mid-line when compared with sapiens...
April 6, 2018: Journal of Anatomy
https://www.readbyqxmd.com/read/29602655/correlation-of-the-lateral-wrist-radiograph-to-ulnar-variance-a-cadaveric-study
#5
Derek T Bernstein, Joshua D Linnell, Nancy J Petersen, David T Netscher
PURPOSE: Both positive and negative ulnar variance have been implicated in a variety of wrist disorders. Surgery aims to correct the variance in these pathologic conditions. This necessitates accurate and reproducible measuring tools; however, the most accurate radiographic measurement technique remains unclear. The purposes of this study were to evaluate 3 methods for determining ulnar variance and to compare each with direct anatomic measurement in a cadaver model. METHODS: We fixed 10 fresh above-elbow cadaver specimens in neutral rotation and obtained standardized fluoroscopic posteroanterior and lateral wrist images...
March 27, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29576921/morphological-associations-between-the-distal-radioulnar-joint-and-the-lunate
#6
Flavien Mauler, Jean-Yves Beaulieu
Background  Variations in morphology of the carpal bones have been described. Their implication in wrist disease and specific kinematic features has been recognized, and a better knowledge of these variations is essential. Questions/Purpose  To radiographically determine any association between the morphological variations of the distal radioulnar joint (DRUJ) and the lunate bone. Materials and Methods  Radiographs of 100 wrists of patients presenting to the emergency department with wrist pain and referred to our outpatient clinic were retrospectively reviewed for DRUJ inclination, ulnar variance, and radiocarpal and midcarpal morphology of the lunate...
April 2018: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/29576920/cadaveric-testing-of-a-novel-scapholunate-ligament-reconstruction
#7
Lana Kang, Christopher J Dy, Mike T Wei, Krystle A Hearns, Michelle G Carlson
Background  Existing scapholunate interosseous ligament (SLIL) reconstruction techniques include fixation spanning the radiocarpal joint, which do not reduce the volar aspect of the scapholunate interval and may limit wrist motion. Questions/Purpose  This study tested the ability of an SLIL reconstruction technique that approximates both the volar and dorsal scapholunate intervals, without spanning the radiocarpal joint, to restore static scapholunate relationships. Materials and Methods  Scapholunate interval, scapholunate angle, and radiolunate angle were measured in nine human cadaveric specimens with the SLIL intact, sectioned, and reconstructed...
April 2018: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/29576914/biomechanics-of-an-articulated-screw-in-acute-scapholunate-ligament-disruption
#8
Matthew E Hiro, Corey J Schiffman, Muturi G Muriuki, Robert M Havey, Leonard I Voronov, Randy R Bindra
Background  An injury to the scapholunate interosseous ligament (SLIL) leads to instability in the scapholunate joint. Temporary fixation is used to protect the ligament during reconstruction or healing of the repair. Rigid screw fixation-by blocking relative physiological motion between the scaphoid and lunate-can lead to screw loosening, pullout, and fracture. Purpose  This study aims to evaluate changes in scaphoid and lunate kinematics following SLIL injury and the effectiveness of an articulating screw at restoring preinjury motion...
April 2018: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/29576913/current-management-of-scaphoid-nonunion-based-on-the-biomechanical-study
#9
Kunihiro Oka, Hisao Moritomo
Scaphoid nonunion causes abnormal wrist kinematics and typically leads to carpal collapse and subsequent degenerative arthritis of the wrist. However, the natural history, including carpal collapse and degenerative arthritis of scaphoid nonunion, may vary at different fracture locations. This article reviews recent biomechanical studies related to the natural history of scaphoid nonunion. In the distal-type fractures (type B2 in Herbert classification), where the fracture located distal to the scaphoid apex, the proximal scaphoid fragment and lunate, which are connected through the dorsal scapholunate interosseous ligament (DSLIL) and dorsal intercarpal ligament (DIC), extend together, and the distal fragment of the scaphoid flexes individually...
April 2018: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/29573896/kienb%C3%A3-ck-disease-in-the-skeletally-immature-patient
#10
REVIEW
Ahmadreza Afshar
Kienböck disease is uncommon in skeletally immature patients. Although there is no gold standard treatment for Kienböck disease in the skeletally immature patient, surgical and nonsurgical treatment options have been shown to be effective. Initial immobilization with a cast, protection with an orthosis, and avoidance of repetitive forceful activities have been shown to be effective in some cases. Surgery may be offered to the skeletally immature patient when nonsurgical treatment is ineffective. Among several surgical techniques used for treatment in the skeletally immature patient with Kienböck disease, distal radial osteotomies have been the most frequently performed surgery; however, radial overgrowth is a concern...
March 21, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29573895/the-effect-of-dorsally-angulated-distal-radius-deformities-on-carpal-kinematics-an-in-vitro-biomechanical-study
#11
Clare E Padmore, Helen Stoesser, Masao Nishiwaki, Braden Gammon, G Daniel G Langohr, Emily A Lalone, James A Johnson, Graham J W King
PURPOSE: The purpose was to quantify the effect of distal radius dorsal angulation (DA) on carpal kinematics and the relative roles of the radiocarpal and midcarpal joints during wrist motion. METHODS: Six cadaveric specimens (69 ± 17 y) were mounted at 90° elbow flexion in a custom wrist motion simulator. The wrist was guided through planar passive flexion and extension motion trials (∼ 5°/s). A custom modular distal radius implant was used to simulate native alignment and 3 distal radius DA deformities (10°, 20°, 30°)...
March 21, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29557680/comparison-of-radiographic-and-intraoperative-visual-assessment-of-scaphotrapezoid-joint-arthritis-in-patients-with-end-stage-carpometacarpal-arthritis-of-the-thumb-base
#12
Anil Akoon, Louis C Grandizio, Gaurav G Mookerjee, Jove Graham, Joel C Klena
BACKGROUND: The purpose of this investigation is to compare the radiographic and intraoperative assessment of scaphotrapezoid (ST) joint arthritis in patients with end-stage carpometacarpal (CMC) arthritis of the thumb base. We aim to define the incidence of ST arthritis in this population and determine whether radiographic features such as lunate morphology, dorsal intercalated segment instability (DISI), and scapholunate (SL) diastasis are associated with the incidence of ST arthritis...
March 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29549407/-treatment-of-necrosis-of-the-lunate-bone
#13
REVIEW
K Kalb, J van Schoonhoven, J Windolf, T Pillukat
BACKGROUND: There still is no standard therapy that predictably results in healing of avascular necrosis of the lunate bone. Nevertheless, there exists a wide spectrum of operative treatment options for different stages. OBJECTIVE: This article reviews the treatment options for necrosis of the lunate bone and proposes algorithms based on the age of the patient and condition of the lunate bone and the wrist. METHODS: Surgical treatment options for necrosis of the lunate bone can be divided into relieving or revascularization procedures and salvage procedures...
March 16, 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/29545435/more-than-40-years-follow-up-of-an-unconstrained-metal-lunate-replacement-for-the-treatment-of-kienb%C3%A3-ck-s-disease
#14
Hammad Parwaiz, Sherif Elnikety
Kienböck's disease is characterised by avascular necrosis of the lunate bone, and over the years it has been a challenging disease to manage, with differing opinions on the best intervention. We present an interesting case of a metallic unconstrained lunate replacement that is still functioning well in a patient 40 years after surgery. This case report represents the longest follow-up of any such prosthesis.
March 15, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29527049/ranchi-institute-of-neuro-psychiatry-and-allied-sciences-a-pioneer-in-the-field-of-psychiatry-in-india
#15
Suprakash Chaudhury, Ajay Kumar Bakhla, Subhas Soren
Ranchi Institute of Neuro-Psychiatry and Allied Sciences (RINPAS; Ranchi Indian Mental Hospital; Ranchi Manasik Aryogyashala) traces its origin from a lunatic asylum for Indian soldiers established at Munghyr in Bihar in 1795 and thus is the first mental hospital in India established by the British purely for Indian patients as well as the second oldest functioning mental hospital in India. The hospital made great strides in improving patients care and using modern methods of assessment and treatment as well as education and research during the tenure of Dr J E Dhunjibhoy the first Indian medical superintendent...
February 2018: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/29527048/the-development-of-mental-hospitals-in-west-bengal-a-brief-history-and-changing-trends
#16
REVIEW
Ranjan Bhattacharyya
The communication between G. S Bose and Sigmund Freud is a well-documented fact, and philosophical blend of rich cultural experiences is unique to modification of traditional psychoanalysis in the context of development of psychiatry in West Bengal. The Calcutta lunatic asylum was established at Bhowanipore, and first general hospital psychiatric unit was formed at R. G. Kar Medical College, Calcutta. Prof. Ajita Chakraborty was a pioneer to describe her struggling days in the early career and shared her views with experiences in her autobiography...
February 2018: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/29527047/history-of-psychiatry-in-bengal
#17
REVIEW
Gautam Kumar Bandyopadhyay, Malay Ghoshal, Gautam Saha, Om Prakash Singh
The history of psychiatry in Bengal mirrors the history of psychiatry in India. With Bengal being an important location for the East India Company, it became the locus for much infrastructure development, including the setting up of lunatic asylums. This article traces the development of psychiatric care in Bengal, from the early time of private asylums exclusively for Europeans, to psychiatric care in the present time.
February 2018: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/29527046/kilpauk-mental-hospital-the-bethlem-of-south-asia-a-recall-of-its-history-prior-to-1970
#18
O Somasundaram, Ponnudurai Ratnaraj
Period of Custodial Care Only: The magnificent "Institute of Mental Health" has its history almost from 1795 when the East India company appointed Surgeon Valentine Conolly to be in charge of a "House for accommodating persons of unsound mind." After a few transitions, backed by a government order for the construction of a lunatic asylum in a 66 1/2 acre site, the asylum started functioning from 1871. The period of about six decades from its inception could be referred to as "the period of custodial care...
February 2018: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/29523902/-diagnosis-and-treatment-of-degenerative-disc-lesions-of-the-wrist
#19
REVIEW
S Löw, C K Spies, F Unglaub, J Oppermann, M Langer, H Erne
BACKGROUND: The triangular fibrocartilage complex (TFCC) widens the radiocarpal joint and takes part in load transmission from the carpus to the forearm. It is thereby prone to degenerative changes. The painful situation that can accompany degeneration is called ulnar impaction. DIAGNOSIS: Clinical examination helps differentiate between various causes of ulnar-sided wrist pain. Standard X‑rays are needed to determine ulnar variance and stress radiographs can depict narrowing of the ulnocarpal joint space under load...
March 9, 2018: Der Orthopäde
https://www.readbyqxmd.com/read/29510891/lunate-grafting-into-the-radius-for-lunate-fossa-reconstruction-in-madelung-deformity
#20
Ricardo Kaempf de Oliveira, Pedro José Delgado, Samuel Ribak, Jayme Augusto Bertelli, Fabiano da Silva Marques
A 40-year-old woman presented with Madelung deformity and severe arthritic changes at both the radiocarpal and the distal radioulnar joints. She was treated by using her lunate as an osteochondral graft into the radius allowing reconstruction of the lunate fossa. The scaphoid and triquetrum were removed concomitantly and a Sauve-Kapandji procedure was performed. Complete bone healing was achieved. Ten years later, an excellent functional result was maintained, with a pain-free wrist, an acceptable wrist joint range of motion, as well as a favorable aesthetic appearance...
March 3, 2018: Journal of Hand Surgery
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