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Scapholunate

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https://www.readbyqxmd.com/read/29451097/a-three-dimensional-printed-patient-specific-scaphoid-replacement-a-cadaveric-study
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
https://www.readbyqxmd.com/read/29358010/volar-plate-fixation-to-treat-scaphoid-nonunion-a-case-series-with-minimum-3-years-of-follow-up
#8
Ignacio Esteban-Feliu, Sergi Barrera-Ochoa, Nuria Vidal-Tarrason, Bernat Mir-Simon, Alex Lluch, Xavier Mir-Bullo
PURPOSE: Several options exist for treating scaphoid nonunion. For selected cases, some authors recommend using a volar buttress plate. The aim of the study was to report the clinical and radiological outcomes achieved at a minimum of 3 years' follow-up of treating scaphoid nonunion with a scaphoid volar plate. METHODS: We retrospectively reviewed 15 patients with symptomatic scaphoid nonunion treated with scaphoid plate osteosynthesis and a bone graft from the volar aspect of the distal radius between January 2011 and November 2013...
January 19, 2018: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29317055/scapholunate-interosseous-ligament-dysfunction-as-a-source-of-elbow-pain-syndromes-possible-mechanisms-and-implications-for-hand-surgeons-and-therapists
#9
Cigdem Ayhan, Seval Tanrıkulu, Gursel Leblebicioglu
Elbow pain syndromes are common upper extremity musculoskeletal disorders, and they are usually associated with repetitive occupational exposure. Ligaments are often one of the sources of musculoskeletal disorders because of their mechanical and neurological properties. The wrist ligaments are some of the ligaments most vulnerable to occupational exposure. Since most occupational tasks require wrist extension for handling tools and loading, the scapholunate interosseous ligament (SLIL) bears greater strain during loading, which results in creep deformation and hysteresis...
January 2018: Medical Hypotheses
https://www.readbyqxmd.com/read/29299502/evaluation-of-normal-ranges-of-wrist-radiologic-indexes-in-mashhad-population
#10
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/29249268/treatment-outcomes-of-4-corner-arthrodesis-for-patients-with-advanced-carpal-collapse-an-average-of-4-years-follow-up-comparing-2-different-plate-types
#11
Lisa Reissner, Stefanie Hensler, Sebastian Kluge, Miriam Marks, Daniel B Herren
PURPOSE: The objective was to investigate the clinical and subjective outcomes of patients after 4-corner arthrodesis (FCA) for scapholunate advanced collapse (SLAC) or scaphoid nonunion advanced collapse (SNAC) and to analyze complications. Furthermore, we compared the long-term results of a first-generation nonlocking plate (Spider) and a plate with a locking screw design (Flower plate). METHODS: In a retrospective cohort study, we included 39 patients with stage II or III SLAC or SNAC who underwent FCA...
December 14, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29234651/dorsal-capsulodesis-associated-with-arthoscopy-assisted-scapholunate-ligament-reconstruction-using-a-palmaris-longus-tendon-graft
#12
Victor Bignatto Carvalho, Carlos Henrique Vieira Ferreira, Andresa Ramires Hoshino, Viviane Alves Bernardo, Gustavo Mantovani Ruggiero, Márcio Aurélio Aita
Objectives: To measure the quality of life, the time to work return, and clinical, functional, and radiographic parameters of patients treated with dorsal capsulodesis associated with scapholunate (SL) reconstruction, assisted by arthroscopy. Methods: From January 2015 to September 2016, 14 adult patients with SL dissociation underwent surgical treatment with the SL reconstruction procedure assisted by arthroscopy, using the new technique proposed in this study...
November 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/29199895/radiological-evaluation-of-scapholunate-intercarpal-ligamentoplasty-for-chronic-scapholunate-dissociation-in-cadavers
#13
Lionel Athlani, Nicolas Pauchard, Gilles Dautel
We performed a cadaveric study to evaluate radiological performance of a technique for scapholunate intercarpal ligamentoplasty designed for treating reducible scapholunate dissociation. We created scapholunate instability in 12 fresh adult cadaveric forearms by sectioning the dorsal scapholunate interosseous ligament and the dorsal intercarpal ligament. All wrists showed scapholunate diastasis, dorsal intercalated segmental instability and posterior scaphoid subluxation. We performed scapholunate intercarpal ligamentoplasty in six wrists and Garcia-Elias three-ligament tenodesis in another six...
January 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/29178063/evaluation-of-the-performance-of-three-tenodesis-techniques-for-the-treatment-of-scapholunate-instability-flexion-extension-and-radial-ulnar-deviation
#14
Teresa Alonso-Rasgado, Qing-Hang Zhang, David Jimenez-Cruz, Colin Bailey, Elizabeth Pinder, Avanthi Mandaleson, Sumedh Talwalkar
Chronic scapholunate ligament (SL) injuries are difficult to treat and can lead to wrist dysfunction. Whilst several tendon reconstruction techniques have been employed in the management of SL instability, SL gap reappearance after surgery has been reported. Using a finite element model and cadaveric study data, we investigated the performance of the Corella, scapholunate axis (SLAM) and modified Brunelli tenodesis (MBT) techniques. Scapholunate dorsal and volar gap and angle were obtained following virtual surgery undertaken using each of the three reconstruction methods with the wrist positioned in flexion, extension, ulnar deviation and radial deviation, in addition to the ulnar-deviated clenched fist and neutral positions...
November 25, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29157783/effect-of-push-up-position-on-wrist-joint-pressures-in-the-intact-wrist-and-following-scapholunate-interosseous-ligament-sectioning
#15
Brett T Daly, Frederick W Werner, Salvatore M Cavallaro, Emily R Tucci, Brian J Harley
PURPOSE: To determine the contact pressures between the scaphoid and lunate and the distal radius during 2 wrist push-up positions before and following scapholunate interosseous ligament (SLIL) sectioning. METHODS: Eight fresh cadaveric wrists were tested in a neutral flexion-extension (knuckle) push-up position and in an extended push-up position. Pressure measurements were acquired as each wrist was loaded with the wrist in extension and with the wrist in a neutral position...
November 17, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29104819/significance-of-scapholunate-gap-width-as-measured-by-probe-from-midcarpal
#16
Steffen Löw, Holger Erne, Ute Strobl, Frank Unglaub, Christian K Spies
Background  Geissler's classification is widely accepted in arthroscopic diagnostics of scapholunate (SL) ligament injury. Thereby, probe insertion into the SL gap from the midcarpal would indicate treatment necessity in patients with SL tear as seen from radiocarpal view. Purpose  In this review, the SL gap width, examined by the probe from midcarpal, was arthroscopically assessed in patients with intact SL ligaments, who were treated for ulnar impaction syndrome. The review examined how often lax SL joints can be found in patients with no complaints with respect to the SL ligaments and in which the SL ligaments were proven to be intact from radiocarpal view...
November 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/29103850/length-changes-in-scapholunate-interosseous-ligament-with-resisted-wrist-radial-and-ulnar-inclination
#17
Jun Tan, Jing Chen, Shuai Mu, Jin Bo Tang, Marc Garcia-Elias
PURPOSE: To investigate the changes in length of the scapholunate interosseous ligament (SLIL) when the wrist is resisting horizontal lateral load and the forearm is in full pronation in vivo. METHODS: We obtained computed tomography scans of the wrists of 6 volunteers in 3 situations: 0° position (0° extension and 0° ulnar inclination) and full forearm pronation without force, and in the same position but with resisted ulnar and radial deviation. Nine zones of 3 subregions of the SLIL were measured and analyzed with computer modeling...
November 2, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/29091493/ten-year-minimum-follow-up-of-4-corner-fusion-for-slac-and-snac-wrist
#18
Purnell Traverso, Anselm Wong, Ronit Wollstein, Lois Carlson, Duffield Ashmead, H Kirk Watson
BACKGROUND: Scapholunate advanced collapse (SLAC) of the wrist is the most common degenerative condition of the wrist. Four-corner fusion (4CF) is performed as salvage surgery, though there is limited information on its long-term results. We hypothesized that 4CF is a durable surgery with good clinical long-term function. METHODS: A retrospective chart review of patients undergoing 4CF as well as an interview and recent radiographs were obtained. Patients with a follow-up period of less than 10 years were excluded...
November 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/29071123/treatment-of-scapholunate-ligament-injury-current-concepts
#19
Jonny K Andersson
Injuries to the scapholunate joint are the most common cause of carpal instability.An isolated injury to the scapholunate ligament may progress to abnormal joint mechanics and degenerative cartilage changes.Treatment for scapholunate instability is aimed at arresting the degenerative process by restoring ligament continuity and normalising carpal kinematics.Early arthroscopic diagnosis of scapholunate injury is mandatory for establishing the prognosis of the injury, as a proper ligament repair is recommended within four to six weeks after trauma...
September 2017: EFORT Open Reviews
https://www.readbyqxmd.com/read/29068934/resurfacing-capitate-pyrocarbon-implant-versus-proximal-row-carpectomy-alone-a-comparative-study-to-evaluate-the-role-of-capitate-prosthetic-resurfacing-in-advanced-carpal-collapse
#20
COMPARATIVE STUDY
Francesco Giacalone, Pietro G di Summa, Alessandro Fenoglio, Arman Sard, Elisa Dutto, Matteo Ferrero, Maddalena Bertolini, Marc Garcia-Elias
BACKGROUND: The Resurfacing Capitate Pyrocarbon Implant associated with proximal row carpectomy has been used to treat symptomatic advanced carpal collapse, widening the indications of proximal row carpectomy to patients with capitate head arthritis. The authors retrospectively compared their case series of implant versus carpectomy alone, analyzing whether prosthetic implant outcomes could be similar to those of proximal row carpectomy even with a higher stage of osteoarthritis. METHODS: Fifty-seven patients who underwent surgery for wrist osteoarthritis (minimum follow-up, 2 years) were selected retrospectively...
November 2017: Plastic and Reconstructive Surgery
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