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Scaphoid bone

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https://www.readbyqxmd.com/read/28633188/clarification-to-article-meier-r-panzica-m-first-results-with-a-resorbable-mgyrezr-compression-screw-in-unstable-scaphoid-fractures-show-extensive-bone-cysts
#1
(no author information available yet)
No abstract text is available yet for this article.
February 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28629558/is-there-a-trend-in-ct-scanning-scaphoid-nonunions-for-deformity-assessment-a-systematic-review
#2
REVIEW
Paul W L Ten Berg, Marieke G A de Roo, Mario Maas, Simon D Strackee
PURPOSE: The effect of scaphoid nonunion deformity on wrist function is uncertain due to the lack of reliable imaging tools. Advanced three-dimensional (3-D) computed tomography (CT)-based imaging techniques may improve deformity assessment by using a mirrored image of the contralateral intact wrist as anatomic reference. The implementation of such techniques depends on the extent to which conventional CT is currently used in standard practice. The purpose of this systematic review of medical literature was to analyze the trend in CT scanning scaphoid nonunions, either unilaterally or bilaterally...
June 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28628801/evaluation-of-midcarpal-capitate-contact-mechanics-in-normal-injured-and-post-operative-wrists
#3
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/28626591/a-case-of-trapezium-avascular-necrosis-treated-conservatively
#4
Evangelos Petsatodis, Konstantinos Ditsios, Panagiotis Konstantinou, Iosafat Pinto, Lazaros Kostretzis, Ioannis Theodoroudis, Mayia Pilavaki
INTRODUCTION: Avascular necrosis (AVN) of the bones of the wrist most commonly involves the lunate followed by the proximal pole of the scaphoid and the capitate. Trapezium avascular necrosis is extremely rare with only two cases reported in the literature, both of which were treated surgically. In this article, we report a unique case of trapezium avascular necrosis treated conservatively. CASE PRESENTATION: A 38-year-old man complaining of a 4-month history of mild pain on the base of his right thumb...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/28533002/the-radial-aspect-of-the-distal-radial-metaphysis-diaphysis-as-a-source-of-cortical-bone-graft
#5
REVIEW
Steven Regal, Aakash Chauhan, Peter Tang
Cortical bone grafting is commonly required in the finger, hand, and carpus when managing bony trauma. A donor site that can provide a small or large amount of cortical bone graft that is easily accessible and within the same surgical field would be the ideal donor site. In high-energy injuries, a long cortical graft may be needed to reconstruct massive bony defects. In low-energy injuries such as scaphoid nonunions in which a wedge graft is needed, a reliable and easily accessible source of bone grafting would be beneficial...
May 19, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28515065/neonatal-vitamin-d-status-from-archived-dried-blood-spots-and-future-risk-of-fractures-in-childhood-results-from-the-d-tect-study-a-population-based-case-cohort-study
#6
Mina Nicole Händel, Peder Frederiksen, Arieh Cohen, Cyrus Cooper, Berit Lilienthal Heitmann, Bo Abrahamsen
Background: Whether antenatal and neonatal vitamin D status have clinical relevance in fracture prevention has not been examined extensively, although observational studies indicate that fetal life may be a sensitive period in relation to bone growth and mineralization during childhood.Objective: We examined whether 25-hydroxyvitamin D3 [25(OH)D3] concentrations in stored neonatal dried blood spot (DBS) samples are associated with pediatric fracture risk. We hypothesized that in particular, low neonatal vitamin D status may be a risk factor for fracture incidence among children...
May 17, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28495027/medial-femoral-condyle-microvascular-bone-transfer-as-a-treatment-for-capitate-avascular-necrosis-surgical-technique-and-case-report
#7
Nikolas H Kazmers, Joshua C Rozell, Kevin M Rumball, Scott H Kozin, Dan A Zlotolow, L Scott Levin
Avascular necrosis (AVN) of the capitate is a rare clinical entity for which a variety of treatment options have been described, ranging from immobilization to microvascular bone transfer. Outcomes following medial femoral condyle corticocancellous free flap reconstruction have not been reported for this specific pathology. We present the case of a 16-year-old girl with posttraumatic capitate AVN who was treated with curettage and medial femoral condyle corticocancellous vascularized bone grafting. At 18 months after surgery, the patient remains pain-free and had resumed all activities including lifeguarding by 6 months after surgery...
May 9, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28473231/arthroscopic-reconstruction-for-unstable-scaphoid-non-union
#8
P J Delgado-Serrano, I Jiménez-Jiménez, M Nikolaev, F A Figueredo-Ojeda, M Gil de Rozas-López
OBJECTIVE: To evaluate the results of arthroscopic reconstruction for the treatment of unstable scaphoid non-union with cancellous bone autograft. METHODS: 13 patients were treated with a mean age of 26 (18-45) years. The average time from injury until surgery was 14 (6-48) months. Preoperative and postoperative clinical and radiological parameters were evaluated. Mean follow-up was 16.8 (12-36) months. RESULTS: Consolidation was achieved in all cases at 7 (4-10 weeks), no patient had complications or reoperations...
May 1, 2017: Revista Española de Cirugía Ortopédica y Traumatología
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
#9
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/28428912/biomechanical-evaluation-of-carpal-kinematics-during-simulated-wrist-motion
#10
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/28421607/laterality-and-grip-strength-influence-hand-bone-micro-architecture-in-modern-humans-an-hrpqct-study
#11
Nicolas Reina, Etienne Cavaignac, William H Trousdale, Jean-Michel Laffosse, José Braga
It is widely hypothesized that mechanical loading, specifically repetitive low-intensity tasks, influences the inner structure of cancellous bone. As such, there is likely a relationship between handedness and bone morphology. The aim of this study is to determine patterns in trabecular bone between dominant and non-dominant hands in modern humans. Seventeen healthy patients between 22 and 32 years old were included in the study. Radial carpal bones (lunate, capitate, scaphoid, trapezium, trapezoid, 1st, 2nd and 3rd metacarpals) were analyzed with high-resolution micro-computed tomography...
June 2017: Journal of Anatomy
https://www.readbyqxmd.com/read/28409141/intrathoracic-fracture-dislocation-of-the-humerus-case-report-and-literature-review
#12
Wilson Carlos Sola Junior, Paulo Sérgio Dos Santos
Shoulder fracture-dislocations are uncommon. Those associated with intrathoracic dislocation are very rare conditions, resulting from high-energy trauma; usually, the affected limb is in an abduction position. In Brazil, there is only one report of a teenager with displacement of the epiphysis into the chest cavity; the present is the first adult patient report of intrathoracic dislocation of the humerus. The authors present the case of a patient female, aged 56 years, who was hit by motorcycle and thrown approximately 5 meters away...
March 2017: Revista Brasileira de Ortopedia
https://www.readbyqxmd.com/read/28401362/carpal-scaphoid-non-union-treatment-a-retrospective-trial-comparing-simple-retrograde-percutaneous-screw-fixation-versus-percutaneous-screw-fixation-plus-pulsed-electromagnetic-fields-physiostim-%C3%A2
#13
Alexis Pereira, Juan José Hidalgo Díaz, Maurise Saur, Santiago Salazar Botero, Sybille Facca, Philippe Liverneaux
BACKGROUND: The purpose of this retrospective comparative study was to assess whether a complementary treatment by pulsed electromagnetic field could increase the bone-healing rate of scaphoid non-union without SNAC (scaphoid non-union advanced collapse) treated by retrograde percutaneous screw fixation. CASE DESCRIPTION: Eighteen patients with scaphoid non-union were included in this retrospective study. The group 1 was made of nine cases (seven stage IIA and two stage IIB) of scaphoid non-union treated by retrograde percutaneous screw fixation and pulsed electromagnetic fields (Physiostim(®))...
April 11, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28383357/radiopaque-element-to-evaluate-adequacy-of-debridement-of-bony-lesions
#14
Nicholas Pulos, Alexander Y Shin
A technique for using an x-ray detectable radiopaque element from a surgical sponge to assess the adequacy of debridement of carpal bone cysts, Kienböck disease (lunate avascular necrosis), enchondroma of the digits, and scaphoid nonunions is described. The technique is simple to perform, inexpensive, and presents minimal additional risk to the patient. The technique has been used over the past 16 years and has enabled adequate debridement of these hand and wrist maladies by radiographically demonstrating the adequacy of the debridement to be bone grafted...
April 21, 2017: Techniques in Hand & Upper Extremity Surgery
https://www.readbyqxmd.com/read/28365801/a-modified-matti-russe-technique-of-grafting-scaphoid-non-unions
#15
Moritz Dustmann, Ralf Bajinski, Alexander Tripp, Joachim Gülke, Nikolaus Wachter
INTRODUCTION: In treatment of scaphoid non-union bone healing requires beside vital tissue and stability, enduring compression and a good interface between the graft and scaphoid fragments. While fixation techniques show a good primary stability, they reduce sintering and thus compression of fragments in the long term. Therefore, a modified technique optimising the cancellous interface between graft and scaphoid but still providing enough stability without fixating implants should be evaluated...
April 1, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28344523/scaphoid-nonunion-with-poor-prognostic-factors-the-role-of-the-free-medial-femoral-condyle-vascularized-bone-graft
#16
Tahseen Chaudhry, Lauren Uppal, Dominic Power, Michael Craigen, Simon Tan
Background: To report on the results of free medial femoral condyle (MFC) vascularized bone graft for scaphoid nonunions with 1 or more poor prognostic factors. Methods: We have used the free MFC vascularized bone graft for scaphoid nonunions that have 1 or more factors associated with a poor prognosis. These were, a delay in presentation of over 5 years, a proximal pole nonunion, the presence of avascular necrosis (AVN), or previous nonunion surgery. We used this technique on 20 patients over a 4.5-year period...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28344522/vascularized-bone-grafting-in-scaphoid-nonunion-a-review-of-patient-centered-outcomes
#17
REVIEW
Ram K Alluri, Christine Yin, Matthew L Iorio, Hyuma Leland, Jason Wong, Ketan Patel
Background: The radiographic and clinical outcomes following vascularized bone grafting (VBG) for scaphoid nonunion have previously been reported in the literature; however, few studies report on patient-derived outcomes. The purpose of this study was to determine the effect of VBG for scaphoid nonunion on patient-derived outcomes. Methods: The MEDLINE and PubMed databases were queried for the use of VBG in scaphoid nonunion. We included studies that reported on patient-derived outcomes. We excluded studies with less than 10 patients or less than 6 months of follow-up...
March 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28340662/vascularized-small-bone-transfers-for-fracture-nonunion-and-bony-defects
#18
REVIEW
Ai Dong Deng, Marco Innocenti, Rohit Arora, Markus Gabl, Jin Bo Tang
Vascularized small-bone grafting is an efficient and often necessary surgical approach for nonunion or necrosis of several bones in particular sites of the body, including scaphoid, lunate, distal ulna, and clavicle. The medial femoral condyle is an excellent graft source that can be used in treating scaphoid, ulna, clavicle, or lower-extremity bone defects, including nonunion. Vascularized bone grafting to the small bones, particularly involving reconstruction of damaged cartilage surfaces, should enhance subchondral vascular supply and help prevent cartilage regeneration...
April 2017: Clinics in Plastic Surgery
https://www.readbyqxmd.com/read/28273677/-first-results-with-a-resorbable-mgyrezr-compression-screw-in-unstable-scaphoid-fractures-show-extensive-bone-cysts
#19
Reinhard Meier, Martin Panzica
Osteosynthesis with headless compression screws is an established treatment option for unstable scaphoid fractures. Common implants are made of titanium alloy or steel and usually remain in place. Due to implant density and ferromagnetic properties, artefacts are common in postoperative imaging procedures, e.g. MRI. Now resorbable implants made of magnesium alloy (MgYREZr) have become available. They have biomechanical properties equivalent to human bone and may be used as an alternative to the nonresorbable screw systems...
February 2017: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/28259113/surgeon-based-3d-printing-for-microvascular-bone-flaps
#20
Erin M Taylor, Matthew L Iorio
Background Three-dimensional (3D) printing has developed as a revolutionary technology with the capacity to design accurate physical models in preoperative planning. We present our experience in surgeon-based design of 3D models, using home 3D software and printing technology for use as an adjunct in vascularized bone transfer. Methods Home 3D printing techniques were used in the design and execution of vascularized bone flap transfers to the upper extremity. Open source imaging software was used to convert preoperative computed tomography scans and create 3D models...
July 2017: Journal of Reconstructive Microsurgery
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