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https://www.readbyqxmd.com/read/28211303/proposal-of-new-classification-of-femoral-trochanteric-fracture-by-three-dimensional-computed-tomography-and-relationship-to-usual-plain-x-ray-classification
#1
Etsuo Shoda, Shimpei Kitada, Yu Sasaki, Hitoshi Hirase, Takahiro Niikura, Sang Yang Lee, Atsushi Sakurai, Keisuke Oe, Takeharu Sasaki
PURPOSE: Classification of femoral trochanteric fractures is usually based on plain X-ray findings using the Evans, Jensen, or AO/OTA classification. However, complications such as nonunion and cut out of the lag screw or blade are seen even in stable fracture. This may be due to the difficulty of exact diagnosis of fracture pattern in plain X-ray. Computed tomography (CT) may provide more information about the fracture pattern, but such data are scarce. In the present study, it was performed to propose a classification system for femoral trochanteric fractures using three-dimensional CT (3D-CT) and investigate the relationship between this classification and conventional plain X-ray classification...
January 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28205465/biomechanics-of-internal-fixation-modalities-for-middle-phalangeal-base-fracture-dislocation
#2
Gen-Lin Foo, Amit K Ramruttun, Andre Eujin Cheah, Alphonsus Kin-Sze Chong, Tun-Lin Foo
BACKGROUND: Internal fixation modalities of unstable (>50 percent articular involvement) middle phalangeal volar lip fracture-dislocations include interfragmentary screw and volar buttress plating. This study investigates the mechanical properties (yield strength, ultimate tensile strength, and stiffness) of interfragmentary screw (IS), simple buttress plating (BP) and buttress plating with subchondral screw (BP+S). METHODS: Fifteen cadaveric digits (5 index, 5 middle, and 5 ring) were prepared by excising its skin envelope and flexor tendons while preserving the structures around the proximal interphalangeal joint...
March 2017: Journal of Hand Surgery Asian-Pacific Volume
https://www.readbyqxmd.com/read/28182135/transverse-and-oblique-long-bone-fracture-evaluation-by-low-order-ultrasonic-guided-waves-a-simulation-study
#3
Ying Li, Dan Liu, Kailiang Xu, Dean Ta, Lawrence H Le, Weiqi Wang
Ultrasonic guided waves have recently been used in fracture evaluation and fracture healing monitoring. An axial transmission technique has been used to quantify the impact of the gap breakage width and fracture angle on the amplitudes of low order guided wave modes S0 and A0 under a 100 kHz narrowband excitation. In our two dimensional finite-difference time-domain (2D-FDTD) simulation, the long bones are modeled as three layers with a soft tissue overlay and marrow underlay. The simulations of the transversely and obliquely fractured long bones show that the amplitudes of both S0 and A0 decrease as the gap breakage widens...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28160904/the-vascular-anatomy-of-the-capitate-new-discoveries-using-micro-computed-tomography-imaging
#4
Assaf Kadar, Mohamed Morsy, Yoo-Joon Sur, Alexis T Laungani, Osman Akdag, Steven L Moran
PURPOSE: To study the intraosseous 3-dimensional microvasculature of the capitate bone using a novel high-resolution micro-computed tomography (μCT) imaging technology, and to examine the blood supply as it relates to the most common fracture types. METHODS: Ten cadaveric wrists were injected with a lead-based contrast agent. The capitates were harvested and imaged using a μCT scanner. The intraosseous vascularity was incorporated into a 3-dimensional image. We measured the vascular pattern as well as the vessels' cross-sectional area, number, and distribution...
February 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28157080/atypical-fractures-of-the-femur-associated-with-chronic-treatment-with-bisphosphonates
#5
Grzegorz Fijewski, Bartłomiej Szostakowski, Radosław Górski, Piotr Modzelewski, Piotr Dudek, Paweł Małdyk
BACKGROUND: The problem of atypical fractures, such as subtrochanteric or diaphyseal femoral fractures, associated with long-term treatment with bisphosphonates (BPs) has recently been given increasingly more attention. These fractures develop as stress fractures and are characterised by diaphyseal cortical thickening and a transverse or slightly oblique fracture line. The use of bisphosphonates has been documented to reduce the risk of osteoporotic fractures. However, an increasing number of papers verify the safety and benefits of the administration of these drugs over more than 3-5 years...
May 5, 2016: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28152185/mechanical-properties-of-canine-osteosarcoma-affected-antebrachia
#6
Michele A Steffey, Tanya C Garcia, Leticia Daniel, Allison L Zwingenberger, Susan M Stover
OBJECTIVE: To determine the influence of neoplasia on the biomechanical properties of canine antebrachia. STUDY DESIGN: Ex vivo biomechanical study. SAMPLE POPULATION: Osteosarcoma (OSA)-affected canine antebrachia (n = 12) and unaffected canine antebrachia (n = 9). METHODS: Antebrachia were compressed in axial loading until failure. A load-deformation curve was used to acquire the structural mechanical properties of neoplastic and unaffected specimens...
February 2, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28144761/addition-of-the-apical-oblique-projection-increases-the-detection-of-acute-traumatic-shoulder-abnormalities-in-adults
#7
Kimberley J Ross, Grant R Tomkinson, Bonnie F McGregor, Oliver C Ayres, Diana Piscitelli
PURPOSE: Plain radiographic evaluation of acute shoulder trauma in adults requires a minimum of two projections, commonly the anteroposterior (AP) and lateral scapular projections, with additional projections taken for diagnosis. The aim of this retrospective study was to determine whether the addition of the apical oblique (AO) projection to the AP and lateral scapular projections increases the number and/or alters the types of abnormalities detected in the examination of acute shoulder trauma...
February 1, 2017: Emergency Radiology
https://www.readbyqxmd.com/read/28141692/biomechanical-analysis-of-retrograde-flexible-intramedullary-nail-constructs-in-a-simulated-pediatric-femur-fracture-model
#8
Daniel C Bland, Sheena R Black, William A Pierce, Robert L Wimberly, Anthony I Riccio
BACKGROUND: Various flexible intramedullary nail (FIMN) constructs for pediatric femur fractures are described; however, no biomechanical study has compared stability of medial-lateral entry versus all-lateral entry retrograde nailing. Our purpose is to compare the rotational and bending stiffness of 2 different FIMN constructs and 2 different materials in a simulated pediatric femur fracture model. METHODS: Eighty adolescent-sized composite femurs were used to simulate transverse (40 femurs) and oblique (40 femurs) mid-diaphyseal fractures...
January 30, 2017: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/28138434/concurrent-lateral-condyle-mass-fracture-with-olecranon-fracture-a-case-report-and-brief-review-of-literature
#9
Munir Farooq, Younis Kamal, Hayat Ahmad Khan, Naseemul Gani, Adil Bashir Shah, Mohammed Ashraf Khan, Shahid Bhat
INTRODUCTION: There is very limited literature describing the association of lateral condyle mass (LCM) fracture of the distal humerus associated concurrently with olecranon fracture. Herein, a case is reported of a displaced LCM fracture with displaced olecranon fracture, due to complex trauma while getting out of a vehicle, which was managed by open reduction and internal fixation. CASE PRESENTATION: A 4.5- year- old boy suffered severe pain and swelling around his right elbow due to trauma which he suffered while trying to get out of a vehicle which was in motion...
September 2016: Archives of Trauma Research
https://www.readbyqxmd.com/read/28126003/magnetic-resonance-imaging-evaluation-of-the-distal-oblique-bundle-in-the-distal-interosseous-membrane-of-the-forearm
#10
Yeon Ho Kim, Hyun Sik Gong, Jin Woo Park, Hyun Kyung Yang, Kahyun Kim, Goo Hyun Baek
BACKGROUND: Some cadaveric studies have reported the role of the distal oblique bundle (DOB) in the distal radioulnar joint stability. We aimed to determine whether the presence of the DOB can be identified and its thickness can be measured in magnetic resonance imaging (MRI) examinations. METHODS: We retrospectively reviewed 468 wrist and forearm MRIs. Inclusion criteria were wrist or forearm MRIs taken in patients older than 18 years of age, and exclusion criteria were patients with acute wrist or forearm fractures, infections, or malignant tumors...
January 26, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28119794/the-oblique-metaphyseal-shortening-osteotomy-of-the-distal-ulna-surgical-technique-and-results-of-ten-patients
#11
Szabolcs Benis, Jean F Goubau, Koen Mermuys, Petrus Van Hoonacker, Bart Berghs, Diederick Kerckhove, Bert Vanmierlo
Background Ulnocarpal abutment is a common condition following distal radius fractures. There are different surgical methods of treatment for this pathology: open and arthroscopic wafer procedure or an ulnar shortening osteotomy. We describe an oblique metaphyseal shortening osteotomy of the distal ulna using two cannulated headless compression screws. We report the results of 10 patients treated with this method. Materials and Methods Out of 17 patients, 10 could be reviewed retrospectively for this study...
February 2017: Journal of Wrist Surgery
https://www.readbyqxmd.com/read/28101589/-intramedullary-nailing-in-diaphyseal-clavicle-fractures-using-minimally-invasive-percutaneous-reduction
#12
M Müller, T Freude, U Stöckle, T M Kraus
OBJECTIVE: Closed reduction and intramedullary nailing is common in diaphyseal clavicle fractures. The aim of this report is to demonstrate a surgical method with minimally invasive percutaneous reduction in cases where closed reduction fails. The procedure is associated with good cosmetic results. INDICATIONS: Percutaneous reduction using two reduction forceps enables intramedullary nailing without an open procedure. CONTRAINDICATIONS: Open, multifragmented or non-dislocated fractures, oblique fractures due to postoperative dislocation or shortening risk, fracture having potential to become compound fractures, neurovascular complications, pseudoarthroses...
February 2017: Operative Orthopädie und Traumatologie
https://www.readbyqxmd.com/read/28070561/the-discovery-of-a-conjugate-system-of-faults-in-the-wharton-basin-intraplate-deformation-zone
#13
Satish C Singh, Nugroho Hananto, Yanfang Qin, Frederique Leclerc, Praditya Avianto, Paul E Tapponnier, Helene Carton, Shengji Wei, Adam B Nugroho, Wishnu A Gemilang, Kerry Sieh, Sylvain Barbot
The deformation at well-defined, narrow plate boundaries depends on the relative plate motion, but how the deformation takes place within a distributed plate boundary zone remains a conundrum. This was confirmed by the seismological analyses of the 2012 great Wharton Basin earthquakes [moment magnitude (Mw) 8.6], which suggested the rupture of several faults at high angles to one another. Using high-resolution bathymetry and seismic reflection data, we report the discovery of new N294°E-striking shear zones, oblique to the plate fabric...
January 2017: Science Advances
https://www.readbyqxmd.com/read/28018567/a-comparison-of-the-fracture-resistances-of-endodontically-treated-mandibular-premolars-restored-with-endocrowns-and-glass-fiber-post-core-retained-conventional-crowns
#14
Jing Guo, Zhiming Wang, Xuesheng Li, Chaoyang Sun, Erdong Gao, Hongbo Li
PURPOSE: This in-vitro study aimed to evaluate the fracture resistances and failure modes of endodontically treated mandibular premolars restored with endocrowns and conventional post-core retained crowns. MATERIALS AND METHODS: Thirty mandibular premolars were assigned into three groups (n=10): GI, intact teeth; GE, teeth with endocrowns; GC, teeth with conventional post-core supported crowns. Except for the teeth in group GI, all specimens were cut to 1.5 mm above the cementoenamel junction and endodontically treated...
December 2016: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28002219/do-transcortical-screws-in-a-locking-plate-construct-improve-the-stiffness-in-the-fixation-of-vancouver-b1-periprosthetic-femur-fractures-a-biomechanical-analysis-of-2-different-plating-constructs
#15
Jasjit Lochab, Andrew Carrothers, Edwin Wong, Stewart McLachlin, Wassim Aldebeyan, Richard Jenkinson, Cari Whyne, Markku T Nousiainen
OBJECTIVES: This biomechanical study compared Vancouver B1 periprosthetic femur fractures fixed with either a locking plate and anterior allograft strut construct or an equivalent locking plate with locking attachment plates construct in paired cadaveric specimens. METHODS: After 9 pairs of cadaveric femora were implanted with a cemented primary total hip arthroplasty, an oblique osteotomy was created distal to the cement mantle. Femora underwent fixation with either: (1) a locking plate with anterior strut allograft (locking compression plating (LCP)-Allograft) or (2) a locking plate with 2 locking attachment plates (LAPs) (LCP-LAP)...
January 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27927507/sacral-alar-iliac-fixation-in-pediatric-deformity-radiographic-outcomes-and-complications
#16
Amit Jain, Khaled M Kebaish, Paul D Sponseller
STUDY DESIGN: Retrospective case series. OBJECTIVES: To assess the radiographic outcomes and complications of sacral-alar-iliac (SAI) fixation in children. SUMMARY OF BACKGROUND DATA: Pelvic fixation in children undergoing spinal deformity surgery can be challenging because of complex anatomy, compound biomechanical forces at the lumbosacral junction, and poor bone quality. METHODS: Radiographic and clinical records of 80 consecutive patients aged 18 years or younger who underwent posterior spinal fusion surgery with SAI fixation by one pediatric orthopedic surgeon and who had a minimum 2 years of follow-up (mean follow-up: 3...
May 2016: Spine Deformity
https://www.readbyqxmd.com/read/27927506/correction-of-pelvic-obliquity-after-spinopelvic-fixation-in-children-with-cerebral-palsy-a-comparison-study-with-minimum-two-year-follow-up
#17
Oussama Abousamra, Tristan Nishnianidze, Kenneth J Rogers, Ilhan A Bayhan, Petya Yorgova, Suken A Shah
STUDY DESIGN: Single institution cohort data were collected prospectively and reviewed retrospectively. OBJECTIVES: This study aims to compare outcomes among three different instrumentation types: unit rod, iliac screws, and sacral alar iliac (SAI) screws in terms of pelvic obliquity correction in children with cerebral palsy (CP). SUMMARY OF BACKGROUND DATA: The optimal choice for spinopelvic fixation in CP scoliosis with pelvic obliquity is controversial...
May 2016: Spine Deformity
https://www.readbyqxmd.com/read/27921157/assessment-of-pisotriquetral-misalignment-with-magnetic-resonance-imaging-is-it-associated-with-trauma
#18
Hee-Dong Chae, Hye Jin Yoo, Sung Hwan Hong, Ja-Young Choi, Heung Sik Kang
OBJECTIVE: Our objective was to determine whether there is an association between pisotriquetral (PT) malalignment and acute distal radius fracture by using magnetic resonance imaging (MRI). METHODS: We evaluated 138 patients who underwent 3-T MRI of the wrists. Group A comprised 85 patients with acute distal radius fracture, and group B comprised 53 patients without trauma. PT interval and angle and pisiform excursion were measured on oblique axial and sagittal multiplanar reformats...
December 5, 2016: European Radiology
https://www.readbyqxmd.com/read/27905184/lower-urinary-tract-imaging-in-pelvic-fracture-an-11-year-review-of-genitourinary-complications-and-clinical-outcomes
#19
Wilson Choi, Handoo Rhee, Eric Chung
BACKGROUND: Diagnostic cysto-urethrogram (CUG) is accepted as the standard of imaging for lower urinary tract (LUT) injuries in patients with pelvic fracture. This study evaluates the prevalence of LUT trauma and adequacy of diagnostic CUG in the initial assessment of patients with pelvic fractures. METHODS: A retrospective review on all patients admitted with pelvic trauma between 2002 and 2012 was undertaken following ethics approval. Patient demographics such as pelvic fracture pattern, genitourinary injury, diagnostic imaging tests and clinical outcomes were reviewed...
December 1, 2016: ANZ Journal of Surgery
https://www.readbyqxmd.com/read/27888274/percutaneous-sacroplasty-for-the-management-of-painful-pathologic-fracture-in-a-multiple-myeloma-patient-case-report-and-review-of-the-literature
#20
A A Dmytriw, K Talla, R Smith
Percutaneous kyphoplasty has a well-established role in the treatment of pathologic fractures in patients with multiple myeloma. Despite this, there is a scarcity of literature surrounding its use and efficacy in the sacrum. We present a case of successful symptom resolution in a patient with painful sacral fracture following sacroplasty, and review the existing literature.An 81-year-man with multiple myeloma presented to the hematology/oncology clinic with a history of excruciating pain while seated. The impact of this pain on his quality of life subjectively was rated to be particularly high...
November 25, 2016: Neuroradiology Journal
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