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https://www.readbyqxmd.com/read/29665044/comparative-anatomy-and-development-of-pectoral-and-pelvic-girdles-in-hylid-anurans
#1
Mónica C Soliz, María Laura Ponssa, Virginia Abdala
The development of the tetrapod pectoral and pelvic girdles is intimately linked to the proximal segments of the fore- and hindlimbs. Most studies on girdles are osteological and provide little information about soft elements such as muscles and tendons. Moreover, there are few comparative developmental studies. Comparative data gleaned from cleared-and-stained whole mounts and serial histological sections of 10 species of hylid frogs are presented here. Adult skeletal morphology, along with bones, muscles, and connective tissue of both girdles and their association with the proximal portions of the anuran fore- and hindlimbs are described...
April 17, 2018: Journal of Morphology
https://www.readbyqxmd.com/read/29662775/relationship-between-heterotopic-ossification-and-traumatic-brain-injury-why-severe-traumatic-brain-injury-increases-the-risk-of-heterotopic-ossification
#2
REVIEW
Huan Huang, Wen-Xiang Cheng, Yi-Ping Hu, Jian-Hai Chen, Zheng-Tan Zheng, Peng Zhang
Heterotopic ossification (HO) is a pathological phenomenon in which ectopic lamellar bone forms in soft tissues. HO involves many predisposing factors, including congenital and postnatal factors. Postnatal HO is usually induced by fracture, burn, neurological damage (brain injury and spinal cord injury) and joint replacement. Recent studies have found that patients who suffered from bone fracture combined with severe traumatic brain injury (S-TBI) are at a significantly increased risk for HO occurrence. Thus, considerable research focused on the influence of S-TBI on fracture healing and bone formation, as well as on the changes in various osteogenic factors with S-TBI occurrence...
January 2018: Journal of Orthopaedic Translation
https://www.readbyqxmd.com/read/29661673/the-use-of-pediatric-flexible-intramedullary-nails-for-minimally-invasive-fibular-fracture-fixation
#3
James C Connors, Mark A Hardy, Duane J Ehredt, Michael A Coyer
Fibular fractures in the setting of an unstable ankle joint require surgical fixation; however, several factors contradict open surgical correction. Severe soft tissue compromise can delay adequate fracture reduction and preclude the standard incisional approach. The soft tissue envelope in the setting of obesity, diabetes, and/or peripheral vascular disease further complicates definitive treatment. Poorly timed open fixation can lead to delayed healing of the incision site, with wound breakdown and the potential for hardware failure...
April 13, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29659394/a-bizarre-bone-scan-of-fibrodysplasia-ossificans-progressiva
#4
Tzyy-Ling Chuang, Kuo-Wei Ho, Yuh-Feng Wang
A 27-year-old woman had progressive bony ankylosis over both hands since she was 5 years old. Bony ankylosing over the peripheral joints and spine slowly progressed, and scoliosis surgery was performed at age 14. Recently, she developed difficulty walking, changing position, and opening her mouth. A neurologist was consulted and ruled out the suspicion of narcolepsy. Chest CT showed ankylosing spondylitis. A bone scan showed a bizarre pattern with radiouptake to the left maxilla, bilateral sacroiliac joints, left middle third femur, and soft tissue uptake over bilateral arms, legs, and pelvis...
April 13, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29658534/the-influence-of-osteoporotic-bone-structures-of-the-pelvic-hip-complex-on-stress-distribution-under-impact-load
#5
Katarzyna Arkusz, Tomasz Klekiel, Niezgoda Niezgoda, Romuald Będziński
PURPOSE: The aim of this study was to determine the effect of bone mineral density (BMD) on the stress distribution in pelvic-hip complex (PHC) model which included bone structures and soft tissues. Bone mass changes in osteoporosis and osteopenia were considered in this analysis. In addition, the relations between force direction and stress distribution causing PHC fractures were determined. METHODS: This paper presents the development and validation of a detailed 3D finite element model with high anatomical fidelity of the PHC and BMD changes in trabecular and cortical bones, modelled based on CT scans...
2018: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/29655648/osteomyelitis-of-the-first-metatarsal-head-treated-with-joint-preserving-surgery-and-a-synthetic-resorbable-bone-graft-substitute-a-case-report
#6
Konstantinos Anagnostakos, Katrin Koch
Managing infections of the first metatarsophalangeal joint can be demanding because many patients present with late-stage infection and partial or total amputation of the first ray or the phalanx could be necessary. We describe such a patient who was successfully treated with a calcium-based resorbable bone substitute that preserved the first metatarsophalangeal joint. A 38-year-old female presented to our department with a foot infection. Examination revealed a methicillin-susceptible Staphylococcus aureus infection of the first metatarsophalangeal joint...
April 11, 2018: Journal of Foot and Ankle Surgery: Official Publication of the American College of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/29625641/salvaging-a-failed-proximal-interphalangeal-joint-implant
#7
REVIEW
Francis J Aversano, Ryan P Calfee
Salvaging a failed proximal interphalangeal (PIP) joint implant arthroplasty remains a considerable technical and rehabilitation challenge. Experienced arthroplasty surgeons have reported 70% survival of revision PIP implants at 10 years with 25% of patients requiring subsequent revision surgery. At this time, there is no consensus surgical approach or implant proven superior for revision implant arthroplasty of the PIP joint. Secondary arthrodesis or amputation may be required to salvage the failed PIP implant arthroplasty with compromised bone stock or soft tissue envelopes that are inadequate for implant arthroplasty...
May 2018: Hand Clinics
https://www.readbyqxmd.com/read/29625584/temporomandibular-joint-regeneration-proposal-of-a-novel-treatment-for-condylar-resorption-after-orthognathic-surgery-using-transplantation-of-autologous-nasal-septum-chondrocytes-and-the-first-human-case-report
#8
Ricardo de Souza Tesch, Esther Rieko Takamori, Karla Menezes, Rosana Bizon Vieira Carias, Cláudio Leonardo Milione Dutra, Marcelo de Freitas Aguiar, Tânia Salgado de Sousa Torraca, Alexandra Cristina Senegaglia, Cármen Lúcia Kuniyoshi Rebelatto, Debora Regina Daga, Paulo Roberto Slud Brofman, Radovan Borojevic
BACKGROUND: Upon orthognathic mandibular advancement surgery the adjacent soft tissues can displace the distal bone segment and increase the load on the temporomandibular joint causing loss of its integrity. Remodeling of the condyle and temporal fossa with destruction of condylar cartilage and subchondral bone leads to postsurgical condylar resorption, with arthralgia and functional limitations. Patients with severe lesions are refractory to conservative treatments, leading to more invasive therapies that range from simple arthrocentesis to open surgery and prosthesis...
April 7, 2018: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/29606803/the-double-pedicled-dorsal-metacarpal-artery-dpdmca-flap-of-the-hand-a-novel-dmca-derived-flap
#9
Till Wagner, Oliver Kloeters, Dietmar Ulrich
The dorsal-metacarpal-artery (DMCA) flap in its standard or extended version is considered as the working horse to cover dorsal soft tissue finger defects with exposed extensor tendon or bone. We hereby present a clinical case of an 80-year-old male patient who is right-handed and sustained a soft tissue defect of the proximal dorsal aspect of his left 5th finger and the postoperative outcome employing a modified transposition flap. The double-pedicled DMCA flap (dpDMCA flap) of the hand poses in adequate clinical scenarios a comparably fast and safe solution to cover dorsal finger defects extending just distal to the PIP joint...
2018: European Journal of Plastic Surgery
https://www.readbyqxmd.com/read/29595277/-the-role-of-magnetic-resonance-imaging-in-diagnostics-of-axial-spondyloarthritis
#10
Martin Žlnay
Axial spondyloarthritis (SpA) is a chronic inflammatory rheumatic disorder that primary affects axial skeleton. It comprises wide spectrum of patients with immune mediated spine inflammation, from early, so called non-radiographic axial spondyloarthritis to clinically evident ankylosing spondylitis. Conventional radiography is still the cornerstone of diagnosis, evaluation and classification of SpA. However, it has limitations in early disease, because it can only depict the consequences of inflammation for its inability to visualize soft tissue abnormalities within bone marrow...
2018: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/29594224/prospective-analysis-of-in-vivo-landmark-point-based-mri-geometric-distortion-in-head-and-neck-cancer-patients-scanned-in-immobilized-radiation-treatment-position-results-of-a-prospective-quality-assurance-protocol
#11
(no author information available yet)
Purpose: Uncertainties related to geometric distortion are a major obstacle for effectively utilizing MRI in radiation oncology. We aim to quantify the geometric distortion in patient images by comparing their in-treatment position MRIs with the corresponding planning CTs, using CT as the non-distorted gold standard. Methods: Twenty-one head and neck cancer patients were imaged with MRI as part of a prospective Institutional Review Board approved study. MR images were acquired with a T2 SE sequence (0...
December 2017: Clinical and Translational Radiation Oncology
https://www.readbyqxmd.com/read/29590701/a-case-of-severe-gouty-tophi-induced-carpal-tunnel-syndrome-operative-finding-and-its-outcome
#12
Jun-Ku Lee, Ju Won Kim, Yoon Seok Kim, Bon San Koo
Gout is a disease featuring acute arthritis, joint deformity and severe pain caused through the deposition of monosodium urate crystals in and around synovial tissue 1. Tophi are stone-like deposits of monosodium urate in the soft tissues, synovial tissues, or bones adjacent to the joints. The tophi can compromise joint motion and deteriorate bony structure, finally leading to functional disability. Therefore, early treatment using uric acid lowering agents is standard practice in gout patients to prevent the formation of tophi through controlling uric acid levels...
February 2018: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/29590700/-results-of-the-reconstruction-of-the-middle-phalangeal-base-of-the-finger-through-an-osteochondral-autograft-from-the-hamate-bone
#13
Thomas Pillukat, Karlheinz Kalb, Joachim Windolf, Jörg van Schoonhoven
OBJECTIVE: The fractured base of the middle phalanx was reconstructed in 13 patients using an osteochondral transplant from the carpometacarpal joint surface of the hamate bone. The goal was to restore joint stability with preservation of mobility. Indications were acute and missed isolated destruction of the palmar middle phalanx base ≥ 30 %. Contraindications were destruction of the head of the proximal phalanx, advanced chondropathy of the head of the proximal phalanx, and extensive soft tissue injury with loss of skin coverage for the proximal interphalangeal joint...
February 2018: Handchirurgie, Mikrochirurgie, Plastische Chirurgie
https://www.readbyqxmd.com/read/29589503/treatment-and-functional-outcomes-of-complex-tibial-fractures-in-children-and-adolescents-using-the-ilizarov-method
#14
J Messner, L Johnson, D M Taylor, P Harwood, S Britten, P Foster
Aims The aim of this study was to report the clinical, functional and radiological outcomes of children and adolescents with tibial fractures treated using the Ilizarov method. Patients and Methods Between 2013 and 2016 a total of 74 children with 75 tibial fractures underwent treatment at our major trauma centre using an Ilizarov frame. Demographic and clinical information from a prospective database was supplemented by routine functional and psychological assessment and a retrospective review of the notes and radiographs...
March 1, 2018: Bone & Joint Journal
https://www.readbyqxmd.com/read/29582024/microscale-mapping-of-extracellular-matrix-elasticity-of-mouse-joint-cartilage-an-approach-to-extracting-bulk-elasticity-of-soft-matter-with-surface-roughness
#15
Preethi L Chandran, Emilios K Dimitriadis, Edward L Mertz, Ferenc Horkay
Cartilage is composed of cells and an extracellular matrix, the latter being a composite of a collagen mesh interpenetrated by proteoglycans responsible for tissue osmotic swelling. The matrix composition and structure vary through the tissue depth. Mapping such variability requires tissue sectioning to gain access. The resulting surface roughness, and concomitant proteoglycan loss contribute to large uncertainties in elastic modulus estimates. To extract elasticity values for the bulk matrix which are not obfuscated by the indeterminate surface layer, we developed a novel experimental and data analysis methodology...
March 27, 2018: Soft Matter
https://www.readbyqxmd.com/read/29576646/sloppy-hinge-prosthetic-replacement-in-old-healed-side-swipe-injuries-of-elbow-long-term-results
#16
Debadyuti Baksi, A K Pal, D P Baksi
Background: Sideswipe injuries of elbow often poses significant functional loss resulting from devastating injuries involving osseoligamentous structures as well as multilevel soft tissue injuries around the elbow. Inspite of treatment, no conscientious treatment opinion is available in the literature to provide optimum functional outcome. The objective of this study is to evaluate the results of prosthetic replacement of old healed sideswipe injuries of elbow with gross dysfunctional disabilities resulting from loss of bones and muscles around the joint...
March 2018: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29576644/complex-tibial-plateau-fractures-treated-by-hybrid-external-fixation-system-a-correlation-of-followup-computed-tomography-derived-quality-of-reduction-with-clinical-results
#17
Konstantinos Kateros, Spyridon P Galanakos, Georgios Kyriakopoulos, Stamatios A Papadakis, George A Macheras
Background: Tibial plateau fractures are common due to high energy injuries. The principles of treatment include respect for the soft tissues, restoring the congruity of the articular surface and reduction of the anatomic alignment of the lower limb to enable early movement of the knee joint. There are various surgical fixation methods that can achieve these principles of treatment. Recognition of the particular fracture pattern is important, as this guides the surgical approach required in order to adequately stabilize the fracture...
March 2018: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/29573933/capsulodesis-versus-bone-trough-technique-in-lateral-meniscal-allograft-transplantation-graft-extrusion-and-functional-results
#18
Angel Masferrer-Pino, Joan C Monllau, Maximiliano Ibáñez, Juan I Erquicia, Xavier Pelfort, Pablo E Gelber
PURPOSE: To compare the radiographic results (in terms of graft extrusion) and the functional results of lateral meniscus allograft transplantations (MAT) performed with a bony fixation technique or with a soft tissue fixation technique after capsulodesis. METHODS: A prospective series of 29 consecutive lateral MAT was analyzed. The inclusion criterion for MAT was lateral joint line pain due to a previous meniscectomy. Malalignment, patients who had an Ahlback grade greater than II, and patients with a body mass index over 30 were considered as the exclusion criterion to prevent confounding results...
March 21, 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29573792/in-situ-comparison-of-a-mode-ultrasound-tracking-system-and-skin-mounted-markers-for-measuring-kinematics-of-the-lower-extremity
#19
Kenan Niu, Thomas Anijs, Victor Sluiter, Jasper Homminga, André Sprengers, Marco A Marra, Nico Verdonschot
Skin-mounted marker based motion capture systems are widely used in measuring the movement of human joints. Kinematic measurements associated with skin-mounted markers are subject to soft tissue artifacts (STA), since the markers follow skin movement, thus generating errors when used to represent motions of underlying bone segments. We present a novel ultrasound tracking system that is capable of directly measuring tibial and femoral bone surfaces during dynamic motions, and subsequently measuring six-degree-of-freedom (6-DOF) tibiofemoral kinematics...
March 10, 2018: Journal of Biomechanics
https://www.readbyqxmd.com/read/29560526/total-ankle-replacement-leads-to-high-revision-rates-in-post-traumatic-end-stage-arthrosis
#20
Yves Gramlich, Oliver Neun, Alexander Klug, Johannes Buckup, Thomas Stein, Arvid Neumann, Sebastian Fischer, Hans-Peter Abt, Reinhard Hoffmann
INTRODUCTION: Extremely heterogeneous revision rates in total ankle arthroplasty (TAA) of the upper ankle joint are reported and result to heterogeneous collectives and to short follow-up times. The aim is to investigate revision rates and the underlying reasons, as well as treatment outcome and quality of life after TAA in post-traumatic cases with sufficient follow-up. METHODS: In 2008-2013, 74 patients with post-traumatic arthrosis were treated using TAA with a Tornier Salto prosthesis, and 60 (35 males and 25 females; mean age 56) were followed-up (mean: 59 months; range 24-91 months)...
March 20, 2018: International Orthopaedics
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