keyword
MENU ▼
Read by QxMD icon Read
search

Bone deformity

keyword
https://www.readbyqxmd.com/read/29907523/effect-of-the-calcaneal-medializing-osteotomy-on-soft-tissues-supporting-the-plantar-arch-a-computational-study
#1
R Larrainzar-Garijo, C Cifuentes de la Portilla, B Gutiérrez-Narvarte, E Díez-Nicolás, J Bayod
Medializing calcaneal osteotomy forms part of the treatment options for adult acquired flat foot. The structural correction that is achieved is widely known. However, the effect of this procedure on the soft tissues that support the plantar arch has been little studied, since it is not possible to quantify experimentally the tension and deformation variations generated. Therefore, the objective of this study was to evaluate the effect of medializing calcaneal osteotomy on the soft tissue that supports the plantar arch, using a computational model of the human foot designed with a clinical approach...
June 12, 2018: Revista Española de Cirugía Ortopédica y Traumatología
https://www.readbyqxmd.com/read/29906249/aberrant-mir-145-5p-%C3%AE-catenin-signal-impairs-osteocyte-function-in-adolescent-idiopathic-scoliosis
#2
Jiajun Zhang, Huanxiong Chen, Ross K K Leung, Kwong Wai Choy, Tsz-Ping Lam, Bobby K W Ng, Yong Qiu, Jian Q Feng, Jack C Y Cheng, Wayne Y W Lee
Recently, noncoding RNAs have been thought to play important roles in the sporadic occurrence of spinal deformity of adolescent idiopathic scoliosis (AIS). As a prognostic factor for curve progression, low bone mass has been hypothesized to crosstalk with AIS pathogenesis. Abnormal osteoblasts activities are reported in AIS without a clear mechanism. In this study, bone biopsies from patients with AIS and control subjects and the primary osteoblasts derived from those samples were used to identify the potential microRNA (miRNA) candidates that interfere with osteoblasts and osteocytes function...
June 15, 2018: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29905968/skeletal-consequences-of-nephropathic-cystinosis
#3
Pablo Florenzano, Carlos Ferreira, Galina Nesterova, Mary Scott Ramnitz, Sri Harsha Tella, Luis Fernandez de Castro, Sydney M Brown, Adom Whitaker, Renata C Pereira, Dorothy Bulas, Rachel I Gafni, Isidro B Salusky, William A Gahl, Michael T Collins
Nephropathic cystinosis is a rare lysosomal storage disorder. Patients present in the first year of life with renal Fanconi syndrome that evolves to progressive chronic kidney disease (CKD). Despite the multiple risk factors for bone disease, the frequency and severity of skeletal disorders in nephropathic cystinosis have not been described. We performed systematic bone and mineral evaluations of subjects with cystinosis seen at the NIH (N = 30), including history and physical examination, serum and urine biochemistries, DXA, vertebral fracture assessment, skeletal radiographs, and renal ultrasound...
June 15, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29905051/-new-type-of-sutured-titanium-wire-combined-with-titanium-nail-internal-fixation-for-correction-of-serious-old-medial-canthus-deformity
#4
Ying Zhang, Changhong Zeng, Jun Chen, Bo Guo
Objective: To evaluate the effectiveness of a new type of sutured titanium wire combined with titanium nail internal fixation in correction of serious old medial canthus deformity. Methods: Between March 2012 and June 2015, 18 patients with unilateral serious old medial canthus deformity were treated. There were 14 males and 4 females. The patient's age ranged from 23 to 62 years (mean, 42 years). The causes of deformity included accident injury in 10 cases, boxing injury in 4 cases, sharp device scratching in 3 cases, and animal bite in 1 case...
June 1, 2018: Chinese Journal of Reparative and Reconstructive Surgery
https://www.readbyqxmd.com/read/29903488/stand-alone-lumbar-cage-subsidence-a-biomechanical-sensitivity-study-of-cage-design-and-placement
#5
Andrea Calvo-Echenique, José Cegoñino, Raúl Chueca, Amaya Pérez-Del Palomar
BACKGROUND AND OBJECTIVE: Spinal degeneration and instability are commonly treated with interbody fusion cages either alone or supplemented with posterior instrumentation with the aim to immobilise the segment and restore intervertebral height. The purpose of this work is to establish a tool which may help to understand the effects of intervertebral cage design and placement on the biomechanical response of a patient-specific model to help reducing post-surgical complications such as subsidence and segment instability...
August 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29902593/bone-matrix-development-in-steroid-induced-osteoporosis-is-associated-with-a-consistently-reduced-fibrillar-stiffness-linked-to-altered-bone-mineral-quality
#6
L Xi, P De Falco, E Barbieri, A Karunaratne, L Bentley, C T Esapa, N J Terrill, S D M Brown, R D Cox, G R Davis, N M Pugno, R V Thakker, H S Gupta
Glucocorticoid-induced osteoporosis (GIOP) is a major secondary form of osteoporosis, with the fracture risk significantly elevated - at similar levels of bone mineral density - in patients taking glucocorticoids compared with non-users. The adverse bone structural changes at multiple hierarchical levels in GIOP, and their mechanistic consequences leading to reduced load-bearing capacity, are not clearly understood. Here we combine experimental X-ray nanoscale mechanical imaging with analytical modelling of the bone matrix mechanics to determine mechanisms causing bone material quality deterioration during development of GIOP...
June 11, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29901593/finite-element-based-3d-computer-modeling-for-personalized-treatment-planning-in-clubfoot-deformity-case-report-with-technique-description
#7
Horea Gozar, Zoltan Derzsi, Alexandru Chira, Örs Nagy, Theodora Benedek
RATIONALE: In clubfoot deformity, planning of corrective treatment requires a complex understanding of the foot anatomy, as well as of the geometry and distribution of altered mechanical forces acting at the level of the deformed foot. At the same time, treatment success depends largely on the selection of the most appropriate shape and angles of the customized orthesis developed for foot correction. Therefore, a complex assessment of the intensity and distribution of the mechanical forces at this site is mandatory prior to initiation of any corrective therapy...
June 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29897505/comprehensive-drilling-of-c1-2-facets-and-multiplanar-realignment-for-atlanto-axial-dislocation-and-basilar-invagination-2-dimensional-operative-video
#8
Pravin Salunke, Sushanta K Sahoo
The management for congenital atlantoaxial dislocation (AAD) and basilar invagination (BI) has significantly changed in the last 2 decades. Authors operate these cases through a direct posterior approach by opening and manipulating the C1-2 joints (irrespective of C1 assimilation), modifying Goel's technique. The joints in these cases are often oblique in both sagittal and coronal planes giving rise to anteroposterior and vertical slip of C1 on C2. Asymmetry on either side gives rise to coronal/lateral angular tilt along with rotational component...
June 12, 2018: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/29896562/proximal-tibial-resorption-in-a-modern-total-knee-prosthesis
#9
Justin T Deen, Terry B Clay, Dane A Iams, MaryBeth Horodyski, Hari K Parvataneni
Background: In an effort to minimize backside polyethylene wear and osteolysis associated with titanium tibial baseplates, many manufacturers have transitioned to cobalt chromium alloys. Recent literature has implicated thicker cobalt chromium designs as a potential source of increased stress shielding and resorption. We report the incidence of proximal tibial bone resorption in a large consecutive series of patients undergoing total knee arthroplasty, with a modern total knee design...
June 2018: Arthroplasty Today
https://www.readbyqxmd.com/read/29896542/tibial-tray-fracture-in-a-modern-prosthesis-with-retrieval-analysis
#10
John J Callaghan, David E DeMik, Nicholas A Bedard, Andrew N Odland, William M Kane, Steven M Kurtz
Fracture of the tibial tray is a rarely observed complication of total knee arthroplasty (TKA), predominately in implants placed greater than a decade ago. This case highlights a case of baseplate fracture in a contemporary prosthesis. The patient presented 1 year after TKA with medial knee pain consistent with pes bursitis. The implant-cement-bone construct was intact and she was managed with corticosteroids. She had persistent pain, acutely developed new varus deformity, and presented with a tibial tray fracture...
June 2018: Arthroplasty Today
https://www.readbyqxmd.com/read/29893070/perspective-review-on-applications-of-optics-in-spinal-surgery
#11
Daipayan Guha, Victor X D Yang
Optical technologies may be applied to multiple facets of spinal surgery from diagnostics to intraoperative image guidance to therapeutics. In diagnostics, the current standard remains cross-sectional static imaging. Optical surface scanning tools may have an important role; however, significant work is required to clearly correlate surface metrics to radiographic and clinically relevant spinal anatomy and alignment. In the realm of intraoperative image guidance, optical tracking is widely developed as the current standard of instrument tracking, however remains compromised by line-of-sight issues and more globally cumbersome registration workflows...
June 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29891210/bi-planar-intra-articular-deformity-following-malunion-of-a-schatzker-v-tibial-plateau-fracture-correction-with-intra-articular-osteotomy-using-patient-specific-guides-and-arthroscopic-resection-of-the-tibial-spine-bone-block
#12
Joseph Pagkalos, Robert Molloy, Martyn Snow
Malunited tibial plateau fractures are a surgical challenge. We report a case of a malunion following a Schatzker V tibial plateau fracture with a biplanar deformity of the medial hemi-plateau. This was treated with an intra-articular osteotomy and biplanar restoration of the medial hemi-plateau using patient-specific guides and 3-dimensional planning based on computed tomography (CT) images. The mechanical axis was paradoxically preserved and the lateral compartment showed evidence of overload and degeneration secondary to a malunited tibial spine bone block providing varus/valgus constraint...
June 8, 2018: Knee
https://www.readbyqxmd.com/read/29891128/long-term-outcomes-of-corrective-osteotomies-using-porous-titanium-wedges-for-flexible-flatfoot-deformity-correction
#13
Michael Matthews, Emily A Cook, Jeremy Cook, Lindsay Johnson, Timothy Karthas, Byron Collier, Daniel Hansen, Elena Manning, Bryon McKenna, Philip Basile
Common corrective osteotomies used in flexible flatfoot deformity reconstruction include Cotton and Evans osteotomies, which require structural graft to maintain correction. Auto-, allo-, and xenografts are associated with a number of limitations, including disease transmission, rejection, donor site morbidity, technical challenges related to graft fashioning, and graft resorption. Porous titanium is a synthetic substance designed to address these flaws; however, few studies have been reported on the efficacy, safety, and long-term outcomes...
June 8, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29890965/intradural-extramedullary-tumor-in-the-stenotic-cervical-spine-resected-through-open-door-laminoplasty-with-hydroxyapatite-spacers-report-of-two-cases
#14
Naohisa Miyakoshi, Daisuke Kudo, Michio Hongo, Yuji Kasukawa, Yoshinori Ishikawa, Yoichi Shimada
BACKGROUND: Safe excision of spinal cord tumors depends on sufficient visualization of the tumor and surrounding structures. In patients with spinal cord tumor adjacent to a stenotic spinal canal, extensive bony decompression proximal and distal to the tumor should be considered for safer excision of the tumor. Extensive wide laminectomy is one choice for such cases, but postoperative problems such as kyphotic deformity remain a concern. CASE PRESENTATION: A 76-year-old man and a 60-year-old woman presented with symptomatic intradural extramedullary spinal cord tumors in the cervical spine...
June 11, 2018: BMC Surgery
https://www.readbyqxmd.com/read/29890459/improvise-adapt-and-overcome-challenges-in-management-of-pediatric-congenital-atlantoaxial-dislocation
#15
Pravin Salunke, Madhivanan Karthigeyan, Sushanta K Sahoo, Narasimhaiah Sunil
OBJECTIVE: Congenital atlanto-axial dislocation (CAAD) often manifests in younger age group. Softer bones, deformed joints and the concern of fusing multiple segments in growing age set apart this subset of patients from adults. Objectives of this manuscript are to discuss the challenges faced and subsequent solutions during multiplanar realignment and fusion (short segment) of C1-2 joints through a direct posterior approach in pediatric CAAD. PATIENTS & METHODS: 56 pediatric patients with CAAD were operated through a direct posterior approach in the last 4 years...
June 5, 2018: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/29890263/long-term-outcome-of-treatment-of-vertebral-body-hemangiomas-with-direct-ethanol-injection-and-short-segment-stabilization
#16
P Sarat Chandra, Pankaj Singh, Rajender K, Deepak Agarwal, Vivek Tandon, S S Kale, Chitra Sarkar
BACKGROUND: Vertebral body (VH) hemangiomas with myelopathy are difficult to manage. OBJECTIVE: To evaluate the role of intra-operative ethanol embolization, surgical decompression and instrumented short segment fusion in VH with myelopathy and long-term outcome (>24 months). METHODS: Prospective study: Symptomatic VH with cord compression with myelopathy. Excluded: pathological fractures, and/or deformity or multi-level pathologies. Surgery consisted of intra-operative bilateral pedicular absolute alcohol (<1% hydrated ethyl alcohol) injection, laminectomy and cord decompression at the level of pathology followed by a short segment instrumented fusion using pedicle screws...
June 8, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29889773/spondylolisthesis-is-common-early-and-severe-in-loeys-dietz-syndrome
#17
David J Kirby, Harry C Dietz, Paul D Sponseller
BACKGROUND: We studied the prevalence and treatment outcomes of spondylolisthesis in patients with Loeys-Dietz syndrome (LDS). METHODS: Clinical data and lumbosacral imaging of 138 patients with LDS were reviewed. Spondylolisthesis (L4-L5 or L5-S1) and spondylolysis were characterized by multimodal imaging and correlated with clinical data. Treatments and outcomes were characterized for patients with spondylolisthesis. Associations were determined using the Fisher exact, Mann-Whitney, and Student t tests (α=0...
June 8, 2018: Journal of Pediatric Orthopedics
https://www.readbyqxmd.com/read/29887741/a-mathematical-model-for-fitting-and-predicting-relaxation-modulus-and-simulating-viscoelastic-responses
#18
Qinwu Xu, Björn Engquist
We propose a mathematical model for relaxation modulus and its numerical solution. The model formula is extended from sigmoidal function considering nonlinear strain hardening. Its physical meaning can be interpreted by a macroscale elastic network-viscous medium model with only five model parameters in a simpler format than the molecular-chain-based polymer models to represent general solid materials. We also developed a finite-element (FE) framework and robust numerical algorithm to implement this model for simulating responses under both static and dynamic loadings...
May 2018: Proceedings. Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/29887628/management-of-talar-body-fractures
#19
S R Sundararajan, Abdul Azeem Badurudeen, R Ramakanth, Shanmuganathan Rajasekaran
Fractures of talar body are uncommon injuries often associated with fractures of other long bones and in polytraumatized patients. The integrity of the talus is essential for the normal function of the ankle, subtalar, and midtarsal joints. The relative infrequency of this injury limits the number of studies available to guide treatment. They occur as a result of high-velocity trauma and are therefore associated with considerable soft tissue damage. Axial compression with supination or pronation is the common mechanism of injury...
May 2018: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29887503/incidence-and-risk-factors-of-knee-injuries-associated-with-ipsilateral-femoral-shaft-fractures-a-multicentre-retrospective-analysis-of-429-femoral-shaft-injuries
#20
Seong-Eun Byun, Hyun-Chul Shon, Jai Hyung Park, Hyoung Keun Oh, Young-Ho Cho, Ji Wan Kim, Jae-Ang Sim
A femoral shaft fracture is usually a high-energy injury and, thus, is likely to be accompanied by an injury of adjacent joints such as a knee ligament injury. However, these associated injuries are often neglected because of severe pain and deformity. The purpose of the current study is to evaluate the incidence, type and risk factors of ipsilateral knee injuries associated with femoral shaft fractures. A total of 429 femoral shaft fractures were included in this study from January 2010 to September 2015. There were 320 males and 109 females, with mean age of 40...
June 4, 2018: Injury
keyword
keyword
90434
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"