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https://www.readbyqxmd.com/read/28628801/evaluation-of-midcarpal-capitate-contact-mechanics-in-normal-injured-and-post-operative-wrists
#1
Saman Modaresi, Madhan S Kallem, Phil Lee, Terence E McIff, E Bruce Toby, Kenneth J Fischer
BACKGROUND: Scapholunate ligament injury is a commonly occurring carpal ligament injury. Pathology associated with scapholunate ligament injury depends on several factors such as the time after injury, type of injury (instability) and the development of osteoarthritis. The aim of this study was to investigate and compare contact mechanics in the lunocapitate and scaphocapitate joints in the normal, injured (scapholunate dissociation) and repaired (postoperative) wrist. METHODS: Four human subjects with scapholunate ligament dissociation participated in this study...
June 13, 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28624019/scapholunate-dissociation-diagnostics-made-easy
#2
K C A L Cheriex, G S I Sulkers, M P Terra, N W L Schep, B J P L van Aard, S D Strackee
Scapholunate dissociation (SLD) is a form of carpal instability, caused by rupture of the scapholunate ligament (SLL) the secondary stabiliser of the scapholunate (SL) compartment. SLD can cause osteoarthritis of the wrist. Recently a study was published that shows cineradiography to be an excellent radiological imaging technique for diagnosing SLD at a tertiary centre for hand and wrist surgery [1]. As the quality of these results can be influenced by the expertise of the operator and observer of the cineradiographic studies, the aim of this study was to determine if these results were reproducible at a secondary centre for hand and wrist surgery with less expertise in wrist cineradiography...
July 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28594695/wrist-arthroscopy-in-children-and-adolescent-with-chronic-wrist-pain-arthroscopic-findings-compared-with-mri
#3
Ashok L Ramavath, P N Unnikrishnan, Harvey L George, Paramasivam Sathyamoorthy, Colin E Bruce
BACKGROUND: Wrist arthroscopy is a dynamic diagnostic procedure and its indications are growing as a treatment modality in the adult population. The aim of the study was to retrospectively report our series of pediatric and adolescence with chronic wrist pain, with or without wrist instability who underwent wrist arthroscopy after failing at least 4 months of conservative management. Our secondary aim was to report the sensitivity and specificity of clinical examination and magnetic resonance imaging evaluation for various injury subgroups against the gold standard of the arthroscopic findings...
July 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28578528/update-on-operative-treatment-of-scapholunate-sl-instability-for-radiologists-part-1-sl-ligament-repair-dorsal-capsulodesis-and-sl-ligament-reconstruction
#4
REVIEW
Kimia Khalatbari Kani, Hyojeong Mulcahy, Jack Porrino, Aaron Daluiski, Felix S Chew
Scapholunate instability is the most common form of carpal instability. Imaging (especially radiography) plays an important role in the staging, management and post-operative follow-up of scapholunate (SL) instability. The goals of this article are to review the pre-operative staging of SL instability, the surgical options for repair and reconstruction of the SL ligament, along with the normal postoperative imaging findings as well as complications associated with these surgical options.
June 3, 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28552760/denervation-of-the-wrist%C3%A2-with-two-surgical-incisions-is-it-effective-a-review-of-33-patients-with-an-average-of-41months-follow-up
#5
S Delclaux, F Elia, C Bouvet, C Aprédoaei, M Rongières, P Mansat
The goal of wrist denervation is to decrease pain at the wrist, whether caused by an intra- or extra-articular problem or even when the reason for the pain is unknown. It is an alternative to partial or total arthrodesis and proximal row carpectomy. Our hypothesis was that wrist denervation with a two-incision technique was a reliable and efficient way to treat painful degenerative wrists. Thirty-three patients, 48years old on average, were included in this study. Indications were scapholunate advanced collapse (SLAC) in 18 cases, scaphoid nonunion advanced collapse (SNAC) in 10, distal radius fracture sequelae with advanced radiocarpal osteoarthritis in 4, and post-traumatic ulnocarpal impingement in 1 case...
May 25, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28547205/update-on-the-operative-treatment-of-scapholunate-instability-for-radiologists-ii-salvage-procedures-total-wrist-arthrodesis-and-total-wrist-arthroplasty
#6
REVIEW
Kimia Khalatbari Kani, Hyojeong Mulcahy, Jack Porrino, Daluiski Aaron, Felix S Chew
Scapholunate (SL) instability is the most common form of carpal instability. Imaging (especially radiography) plays an important role in the staging, management, and postoperative follow-up of SL instability. In the final stage of SL instability, known as scapholunate advanced collapse, progressive degenerative changes occur at the carpal level. The goals of this article are to review the surgical options available for addressing the different stages of scapholunate advanced collapse, along with an emphasis on normal postoperative imaging and complications associated with each surgical option...
August 2017: Skeletal Radiology
https://www.readbyqxmd.com/read/28525962/association-of-lunate-morphology-with-carpal-instability-in-scapholunate-ligament-injury
#7
Eric Quan Pang, Nathan Douglass, Robin N Kamal
BACKGROUND: We examined the relationship between lunate morphology (type 1 without a medial facet; type II with a medial facet) and dorsal intercalated segmental instability (DISI) in patients with scapholunate ligament injuries. We tested the primary null hypothesis that there is no relationship between lunate morphology and development of DISI. Secondary analysis compared the agreement of classifying lunate morphology based on the presence of a medial lunate facet, capitate-to-triquetrum (CT) distance, and magnetic resonance imaging (MRI)...
May 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28521384/analysis-of-tenodesis-techiques-for-treatment-of-scapholunate-instability-using-the-finite-element-method
#8
Teresa Alonso Rasgado, Qinghang 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 finite element model and cadaveric study data we investigated the performance of the Corella, schapolunate axis (SLAM) and modified Brunelli tenodesis (MBT) techniques. Virtual tenodesis surgery was undertaken in 3D finite element (FE) models to obtain the scapholunate (SL) gap and angle resulting from the three reconstruction techniques...
May 18, 2017: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/28494943/kinematic-analysis-of-the-scaphoid-using-gated-four-dimensional-ct
#9
I S Mat Jais, S C Tay
AIM: To investigate the kinematics of the scaphoid while the wrist was in radioulnar motion using gated four-dimensional computed tomography (4DCT) imaging. MATERIALS AND METHODS: Six cadaveric wrist specimens were scanned in the following order of capsulotomy and ligament sectioning: (1) ligaments intact, (2) capsulotomy, (3) scapholunate ligament division, and lastly, (4) lunotriquetral ligament division. A three-dimensional model was then reconstructed to analyse the translation and angular displacements of the scaphoid...
May 7, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28488454/diagnostic-accuracy-of-single-compartment-magnetic-resonance-arthrography-in-detecting-common-causes-of-chronic-wrist-pain
#10
A M Asaad, A Andronic, M P Newby, J W K Harrison
We reviewed a series of 50 consecutive wrist arthroscopy patients who had been investigated pre-operatively by direct magnetic resonance arthrography and calculated the sensitivity, specificity, positive predictive value, negative predictive value and overall accuracy of magnetic resonance arthrography in detecting full-thickness triangular fibrocartilage complex tears, intrinsic carpal ligamentous lesions, wrist synovitis and chondral lesions in the radiocarpal joint. The sensitivities of magnetic resonance arthrography in detecting central triangular fibrocartilage complex tears, peripheral triangular fibrocartilage complex tears, scapholunate ligament tears, lunotriquetral ligament tears, dorsal synovitis and radiocarpal chondral lesions were 89%, 63%, 71%, 100%, 32% and 65%, respectively, and its specificities in detecting these lesions were 91%, 98%, 89%, 94% 94% and 97%, respectively...
March 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28488448/indications-techniques-and-outcomes-of-arthroscopic-repair-of-scapholunate-ligament-and-triangular-fibrocartilage-complex
#11
C L Mathoulin
This review includes updated understanding of the roles of intrinsic and extrinsic carpal ligaments in scapholunate instability and details the author's experience of indications, arthroscopic repair methods, and outcomes of treating the instability. A classification on triangular fibrocartilage complex injuries is reviewed, followed by author's indications, methods, and outcomes of arthroscopic repair of triangular fibrocartilage complex injuries.
May 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28465199/contribution-of-arthroscopy-to-the-treatment-of-intraarticular-fracture-of-the-distal-radius-retrospective-study-of-40-cases
#12
N Christiaens, G Nedellec, E Guerre, J Guillou, X Demondion, C Fontaine, C Chantelot
Our study aimed to compare the anatomical result after treatment of intraarticular distal radius fracture with locking volar plates with and without arthroscopy. This was a retrospective, single-center study of intraarticular fractures. A volar locked plate was used for fracture fixation in all patients. Twenty patients were operated on with fluoroscopy only ("plate" group) and 20 operated using arthroscopy assistance ("arthroscopy" group). All patients underwent a CT scan before surgery and at 3 months postoperative...
April 25, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28465197/effect-of-four-corner-fusion-with-locking-plate-without-bone-graft-on-functional-recovery-of-the-wrist-new-treatment-guidelines
#13
A Tielemans, F Van Innis, S Troussel, C Detrembleur, X Libouton, T Lequint
We assessed the effect of four-corner intercarpal fusion with locking plate without bone graft on daily activities and pain in patients with stage II and III scapholunate advanced collapse and scaphoid nonunion. Twenty-one patients who underwent four-corner fusion with scaphoidectomy without bone graft were evaluated with the Disabilities of the Arm, Shoulder and Hand (QuickDASH) and Visual Analog Scale (VAS) pain scores before and 16 months after surgery. We also compared postoperative grip strength between the operated and the healthy side...
April 5, 2017: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/28462652/sequential-scapholunate-and-volar-beak-ligament-reconstructions-with-flexor-carpi-radialis-tendon-grafts
#14
K P Iyengar, H E Matar, M Durrani, Y C Loh
The flexor carpi radialis tendon is considered by many the workhorse tendon in hand and wrist surgery. Some have expressed concerns about altering the mechanics of the wrist by sacrificing part or all of the flexor carpi radialis tendon. We present an interesting case of sequential scapholunate and volar beak ligament reconstructions using a flexor carpi radialis tendon autograft where a slip of tendon was harvested twice within three years, achieving a satisfactory clinical outcome at five years following the initial surgery...
May 2017: Annals of the Royal College of Surgeons of England
https://www.readbyqxmd.com/read/28428913/comparison-of-magnetic-resonance-imaging-and-radiographs-for-evaluation-of-carpal-osteoarthritis
#15
Angela E Li, Steve K Lee, Schneider K Rancy, Alissa J Burge, Hollis G Potter, Scott W Wolfe
Background We sought to evaluate the interobserver and intraobserver reliability of radiographs and magnetic resonance imaging (MRI) for grading of osteoarthritis in patients with scapholunate advanced collapse (SLAC) and scaphoid nonunion advanced collapse (SNAC), and to determine whether MRI is more likely than radiographs to detect carpal osteoarthritis. Methods Radiographs and MR studies of 46 patients with SLAC and SNAC arthritis were reviewed by two hand surgeons and two radiologists and were graded according to severity of osteoarthritis at seven carpal joints...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28428912/biomechanical-evaluation-of-carpal-kinematics-during-simulated-wrist-motion
#16
Helen Stoesser, Clare E Padmore, Masao Nishiwaki, Braden Gammon, G Daniel G Langohr, James A Johnson
Background Flexion and extension of the wrist is achieved primarily at the radiocarpal and midcarpal joints. Carpal kinematics have been investigated, although there remains no consensus regarding the relative contribution of each bone to wrist motion. Purpose To determine the kinematics of the scaphoid, lunate, and capitate during unconstrained simulated wrist flexion/extension and to examine the effect of motion direction on the contribution of each bone. Materials and Methods Seven cadaveric upper extremities were tested in a passive wrist simulator with 10N tone loads applied to the wrist flexors/extensors...
May 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28373948/arthroscopic-scapholunate-capsuloligamentous-repair-suture-with-dorsal-capsular-reinforcement-for-scapholunate-ligament-lesion
#17
Vicente Carratalá, Francisco J Lucas, Ignacio Miranda, Eduardo Sánchez Alepuz, Christian González Jofré
Scapholunate ligament (SLL) injury is the most frequent injury of the intrinsic carpal ligaments. The dorsal part of the SLL is the most important part for the stability of the scapholunate joint, and tears of this part and at least one of its secondary capsular attachments cause scapholunate dissociation. The arthroscopic technique most frequently used for acute injuries is reduction and fixation with Kirschner wires, and techniques that involve a primary repair of the injured ligament are performed by open surgery with efficient results...
February 2017: Arthroscopy Techniques
https://www.readbyqxmd.com/read/28344533/diagnostic-wrist-arthroscopy-for-nonspecific-wrist-pain
#18
Amin Mohamadi, Femke M A P Claessen, Sezai Ozkan, Gregory P Kolovich, David Ring, Neal C Chen
Background: This study addresses the prevalence of discrete pathophysiology accounting for patients' symptoms during diagnostic wrist arthroscopy in individuals with wrist pain without a specific preoperative diagnosis. Secondarily, we determined the number and type of surgeries subsequent to diagnostic wrist arthroscopy. Methods: Between January 2000 and January 2015, 135 diagnostic wrist arthroscopies were performed by 12 surgeons in 3 urban academic hospitals. We recorded the diagnostic findings of diagnostic wrist arthroscopy and any subsequent surgeries...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28344525/mri-correlation-of-radial-head-fractures-and-forearm-injuries
#19
Hisham Awan, Robert Goitz
Background: Radial head fractures can be associated with soft tissue injuries of the forearm and wrist. The Essex-Lopresti injury can lead to significant morbidity, especially if the diagnosis is not made acutely. Better identification of such injuries is needed to allow optimal surgical treatment and prevent long-term sequelae. We used magnetic resonance imaging (MRI) to correlate the degree of soft tissue injuries with radial head fractures. Methods: Sixteen pairs of forearms with an associated radial head fracture in 15 patients prospectively underwent an MRI within 2 weeks of their injury...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28229185/hamate-and-pisiform-coalition-a-case-report-and-introduction-to-the-carpal-c-sign-on-lateral-radiograph
#20
Jonathan Cortese, Marc Soubeyrand, Leo Razakamanantsoa, Marie-France Bellin, Maud Creze
Hamate-pisiform coalition is an exceptional form of carpal coalition. Case reports are essential to gain a better understanding of this variant. We report a case of congenital bilateral hamate-pisiform coalition in a 20-year-old male discovered in the context of a right wrist trauma. Radiographs also revealed a bilateral scapholunate diastasis. Clinical examination and radiological findings suggested that the right wrist scapholunate diastasis was related to scapholunate instability. Left wrist scapholunate diastasis could be related to (1) a pathological feature or (2) a normal variant associated with hamate-pisiform coalition...
February 22, 2017: Skeletal Radiology
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