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https://www.readbyqxmd.com/read/29675505/locking-dorsal-plate-in-four-bone-arthrodesis-in-slac-and-snac-3-wrist
#1
Simona Odella, Amos M Querenghi, Francesco M Locatelli, Ugo Dacatra, Elia Creta, Pierluigi Tos
Purpose  The aim of this study was to evaluate the effectiveness and the safety of performing a four-bone arthrodesis (FBA) with dorsal locking plate in patients suffering from stage III scapholunate advanced collapse/scaphoid nonunion advance collapse (SLAC/SNAC) wrist. Methods  We evaluated retrospectively 20 patients surgically treated by a FBA with the use of locking dorsal plate. All the patients were clinically evaluated at follow-up for grip strength, range of motion, and pain (visual analog scale), and with the Disability of the Arm, Shoulder and Hand score and the Mayo wrist score...
March 2018: Joints
https://www.readbyqxmd.com/read/29576920/cadaveric-testing-of-a-novel-scapholunate-ligament-reconstruction
#2
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
#3
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
#4
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/29557680/comparison-of-radiographic-and-intraoperative-visual-assessment-of-scaphotrapezoid-joint-arthritis-in-patients-with-end-stage-carpometacarpal-arthritis-of-the-thumb-base
#5
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/29536137/-mediocarpal-instability-of-the-wrist
#6
REVIEW
A L Sander, K Sommer, K Eichler, I Marzi, J Frank
Typical lesions of the carpal ligaments are mostly found after a fall on the wrist in hyperextension or as complex injuries after severe trauma, e. g. after a fall from a significant height, motorcycle accident or as accompanying lesions in multiple trauma. The typical mechanisms, patterns and diagnostic algorithms are well known for the common ligamentous injuries (e.g. scapholunate, lunotriquetral and perilunate); therefore, consistent diagnostic procedures and adequate therapy are increasingly performed after such lesions, e...
March 13, 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/29504476/unplanned-reoperation-after-surgery-for-scapholunate-interosseous-ligament-insufficiency-a-retrospective-review-of-316-patients
#7
Wouter F van Leeuwen, Mariano E Menendez, Michael P Gaspar, Sidney M Jacoby, A Lee Osterman, Neal Chen
BACKGROUND: The purpose of this study was to identify factors associated with unplanned reoperation after surgery for scapholunate interosseous ligament (SLIL) insufficiency. METHODS: Using Current Procedural Terminology (CPT) codes from 3 hand surgery centers across 2 metropolitan areas, we identified 316 patients undergoing surgery for SLIL insufficiency from 2000 to 2014. Medical records were manually reviewed to collect data on factors that might be associated with unplanned reoperation, including age, sex, tobacco use, occupation, acuity of treatment, and reconstruction method...
March 1, 2018: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29502132/are-adult-carpal-angle-measurements-applicable-to-the-pediatric-population-in-the-trauma-setting
#8
E A Joyce, T Farrell, J McMorrow, D Mulholland, K M Browne, A Snow
OBJECTIVE: The aim of this study is to assess the applicability of standard adult carpal angle measurements, specifically the scapholunate and capitolunate angles, in the assessment of the pediatric wrist. MATERIALS AND METHODS: The study cohort comprised male and female children who underwent a wrist radiograph for the evaluation of suspected wrist injuries following trauma. A gender- and indication-matched adult cohort was also assessed. To ensure an accurate carpal angle measurement, only individuals with a sufficiently ossified carpus and an adequately positioned lateral wrist radiograph were included...
March 3, 2018: Skeletal Radiology
https://www.readbyqxmd.com/read/29490600/scapholunate-dissociation
#9
Andrew Tomas
A 52-year-old man sustained an injury to the right wrist following a fall into a push-up position. Direct-access outpatient physical therapy evaluation was performed 24 hours after the injury. A scaphoid radiograph series, consistent with American College of Radiology guidelines, was obtained based upon examination findings. The radiographs revealed a scapholunate gap of 4 mm and a scapholunate angle of greater than 60°, suggestive of scapholunate dissociation. J Orthop Sports Phys Ther 2018;48(3):225. doi:10...
March 2018: Journal of Orthopaedic and Sports Physical Therapy
https://www.readbyqxmd.com/read/29464291/-rupture-of-the-scapholunate-intercarpal-ligament
#10
REVIEW
Berthold Bickert
Complete rupture of the scapholunate (SL) ligament can cause a dissociative carpal instability (CID). These ligamentous lesions are caused by a fall from a limited height of approximately 1 m or a fall, e. g. when playing handball or soccer. For a freshly injured wrist joint, the X‑ray signs of a static instability (after excluding a fracture) are a SL distance ≥3 mm, a SL angle >60°, and a dorsal displacement of the proximal scaphoid pole. Dynamic instabilities are best seen in kinematography of the wrist joint...
February 20, 2018: Der Unfallchirurg
https://www.readbyqxmd.com/read/29463458/surgical-treatment-by-percutaneous-anterior-screw-fixation-of-scaphoid-fractures
#11
A Marzouki, B Soumare, A S Diarra, K Lahrach, F Boutayeb
The aim of this study was to evaluate the results of percutaneous screw fixation of scaphoid waist fractures in our surgery unit by comparing them with recent data from the literature. This was a retrospective, descriptive study conducted between January 2010 and September 2016. Patients operated due to a recent scaphoid fracture and treated by percutaneous anterograde screw fixation with a Herbert screw were included in this study. Our cohort was a sub-set from a scaphoid fracture group; other fracture sites, other treatment techniques and fractures associated with scapholunate ligament lesions were excluded...
April 2018: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/29459171/tensile-and-torsional-structural-properties-of-the-native-scapholunate-ligament
#12
Eric Quan Pang, Nathan Douglass, Anthony Behn, Matthew Winterton, Michael J Rainbow, Robin N Kamal
PURPOSE: The ideal material for reconstruction of the scapholunate interosseous ligament (SLIL) should replicate the mechanical properties of the native SLIL to recreate normal kinematics and prevent posttraumatic arthritis. The purpose of our study was to evaluate the cyclic torsional and tensile properties of the native SLIL and load to failure tensile properties of the dorsal SLIL. METHODS: The SLIL bone complex was resected from 10 fresh-frozen cadavers. The scaphoid and lunate were secured in polymethylmethacrylate and mounted on a test machine that incorporated an x-y stage and universal joint, which permitted translations perpendicular to the rotation/pull axis as well as nonaxial angulations...
February 17, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29456778/incidence-and-functional-outcomes-of-scapholunate-diastases-associated-distal-radius-fractures-a-2-year-follow-up-scapholunate-dissociation
#13
Jonathan Lans, Alejandro Lasa, Neal C Chen, Jesse B Jupiter
Background: The Scapholunate Interosseous Ligament (SLIL) is the first intrinsic carpal ligament to be injured in wrist trauma, present in up to 64% of the distal radius fractures. However, it remains unclear what patients develop symptoms, making primary treatment of these injuries accompanying distal radius fractures remains questionable. Objective: The aim of this study was to evaluate the functional outcomes of patients with scapholunate diastasis associated with distal radius fractures...
2018: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/29451097/a-three-dimensional-printed-patient-specific-scaphoid-replacement-a-cadaveric-study
#14
Philipp Honigmann, Ralf Schumacher, Romy Marek, Franz Büttner, Florian Thieringer, Mathias Haefeli
We present our first cadaveric test results of a three-dimensional printed patient-specific scaphoid replacement with tendon suspension, which showed normal motion behaviour and preservation of a stable scapholunate interval during physiological range of motion.
January 1, 2018: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29439687/3d-analysis-of-osteosyntheses-material-using-semi-automated-ct-segmentation-a-case-series-of-a-4-corner-fusion-plate
#15
Rebecca Woehl, Johannes Maier, Sebastian Gehmert, Christoph Palm, Birgit Riebschlaeger, Michael Nerlich, Michaela Huber
BACKROUND: Scaphoidectomy and midcarpal fusion can be performed using traditional fixation methods like K-wires, staples, screws or different dorsal (non)locking arthrodesis systems. The aim of this study is to test the Aptus four corner locking plate and to compare the clinical findings to the data revealed by CT scans and semi-automated segmentation. METHODS: This is a retrospective review of eleven patients suffering from scapholunate advanced collapse (SLAC) or scaphoid non-union advanced collapse (SNAC) wrist, who received a four corner fusion between August 2011 and July 2014...
February 13, 2018: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29428246/measurement-of-carpal-alignment-indices-using-3-dimensional-computed-tomography
#16
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/29383283/arthroscopic-scaphoid-3d-test-for-scapholunate-instability
#17
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/29383274/importance-of-computed-tomography-in-determining-displacement-in-scaphoid-fractures
#18
Emily Gilley, Sameer K Puri, Krystle A Hearns, Andrew J Weiland, Michelle G Carlson
Background  Displaced scaphoid fractures have a relatively high rate of nonunion. Detection of displacement is vital in limiting the risk of nonunion when treating scaphoid fractures. Questions/Purpose  We evaluated the ability to diagnose displacement on radiographs and computed tomography (CT), hypothesizing that displacement is underestimated in assessing scaphoid fracture by radiograph compared with CT. Materials and Methods  Thirty-five preoperative radiographs and CT scans of acute scaphoid fractures were evaluated by two blinded observers...
February 2018: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/29375263/wrist-arthroscopy-basic-tips-for-dry-arthroscopic-exploration
#19
Henrique DE Barros Pinto, Suzilaine Ramos DE Oliveira, Flavia Curvo Pereira, Nilton Mazzer
Objective: This article provides details and tips on the dry arthroscopic technique, based on our experience and its clinical applications. Method: The technique was applied to 65 patients (33 men and 32 women) aged between 20 and 62 years (average of 35.4 years) for treating: synovial cyst resection, scapholunate ligament injury repair, ulnocarpal impact correction, triangular fibrocartilage injury repair, and assisted reduction of distal radius fractures. Results: A minimally invasive intra-articular evaluation has been observed as a benefit, with low infection rate, small scars, and high rates of early recovery, without affecting intra-articular fluid use, reducing the risk of compartment syndrome and infiltrated soft tissues, in the case of need for associated open surgery...
November 2017: Acta Ortopedica Brasileira
https://www.readbyqxmd.com/read/29368159/-distal-radius-fractures-update-on-imaging
#20
J-P Grunz, C H Gietzen, R Schmitt, K J Prommersberger
Distal radius fractures are associated with high individual and socioeconomic relevance. Optimized radiography and computed tomography (CT) imaging are essential for individualized therapy planning. Plain CT imaging with 3D reconstruction and digital removal of the carpus and ulna is helpful for choosing the surgical approach in the presence of intra-articular radius fractures. If the fracture line leads towards the scapholunate compartment, ligamentous injury requiring treatment can be detected or ruled out before surgery with the help of direct CT arthrography (CTA)...
January 24, 2018: Der Radiologe
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