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bone reconstruction

Masateru Nagae, Yasuo Mikami, Kentaro Mizuno, Tomohisa Harada, Takumi Ikeda, Hitoshi Tonomura, Ryota Takatori, Hiroyoshi Fujiwara, Toshikazu Kubo
INTRODUCTION: Polymethylmethacrylate (PMMA) cement is useful for spinal reconstruction, but can cause complications including new vertebral fractures, neurological disorders and pulmonary embolism. We report a case in PMMA cement used for spinal reconstruction after tumor curettage dislodged and penetrated the gastrointestinal tract. DIAGNOSES: The patient was diagnosed with a retroperitoneal extragonadal germ cell tumor at age 27 years. After chemotherapy and tumor resection, the tumor remained...
October 2016: Medicine (Baltimore)
M Savolainen, A Ritvanen, J Hukki, P Vuola, J Telkkä, J Leikola
Correction of calvarial defects after calvarial vault reconstruction (CVR) is challenging in craniosynostosis patients of advanced age and typically employs autologous bone. Demineralized bone matrix (DBM) is a potential alternative material for autologous bone, but its use has not been extended to correct calvarial defects. CVR patients operated at the Department of Plastic Surgery, Helsinki University Hospital, during 2008-2010 were retrospectively reviewed. Inclusion criteria of the study were CVR patients who received DBM plate, with or without bone dust, on calvarial defects and who had suitable uncovered defect on the contralateral side as control...
September 20, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
Enrico Bellato, Roberto Rotini, Alessandro Marinelli, Enrico Guerra, Shawn W O'Driscoll
BACKGROUND: Chronic coronoid deficiency can occur subsequent to coronoid fracture malunion/nonunion or to coronoid hypoplasia or dysplasia resulting from injury during development. Several surgical options have been described to treat this difficult condition, but results are equivocal. We hypothesized that a modified coronoid reconstruction using a radial head osteochondral graft could restore elbow stability and congruity and that a technique involving rigid internal fixation would promote graft union...
October 14, 2016: Journal of Shoulder and Elbow Surgery
Faeze Pournaqi, Armaghan Ghiaee, Saeid Vakilian, Abdolreza Ardeshirylajimi
Tissue engineering is a promising emerged method trying to reconstruct lost tissues that using synthetic and biomaterials and their combination with cells. The purpose of this study is increase osteoinductivity of polyethersulfone (PES) by using polyaniline (PANi). In this study, after fabrication of PES and composited PES-PANi scaffolds by electrospinning, scaffolds were characterized morphologically and mechanically. Then osteoinductivity of scaffolds was investigated by osteogenic differentiation of human mesenchymal stem cells (MSCs) cultured on the PES and PES-PANI in comparison to the tissue culture polystyrene as a control...
October 14, 2016: Biologicals: Journal of the International Association of Biological Standardization
Thomas Zahnert, Marie-Luise Metasch, Hannes Seidler, Matthias Bornitz, Nicoloz Lasurashvili, Marcus Neudert
HYPOTHESIS: Electromagnetical excitation of ossicular vibration is suitable for middle ear transmission measurements in the experimental and clinical setting. Thereby, it can be used as a real-time monitoring system for quality control in ossiculoplasty. BACKGROUND: Positioning and coupling of middle ear prosthesis are a precondition for good postoperative hearing results, but at the same time completely dependent upon the surgeon's subjective judgment during surgery...
October 4, 2016: Otology & Neurotology
Michelle T Sun, Andrea J O'Connor, John Wood, Robert Casson, Dinesh Selva
PURPOSE: Bioengineering aims to produce functional tissue replacements to repair defects and has been widely investigated over the past few decades. We aimed to review the available literature on the application of tissue engineering in ophthalmology, with a particular focus on ophthalmic plastic surgery and potential applications for eyelid reconstruction. METHODS: A literature search was performed on the MEDLINE database using the keywords "bioengineering," "tissue engineering," and "ophthalmology...
October 5, 2016: Ophthalmic Plastic and Reconstructive Surgery
Claudia Dellavia, Michele Giammattei, Daniela Carmagnola, Federica Musto, Elena Canciani, Matteo Chiapasco
PURPOSE: The aim of this work was to compare histologically bone biopsies obtained during dental implant placement in atrophic jaws reconstructed with fresh-frozen bone (FFB) or autologous bone blocks. MATERIALS AND METHODS: Twenty partially or totally edentulous patients were treated either with iliac crest FFB grafts (14 patients; group A) or with iliac crest autografts (6 patients; group B). Seven to 9 months later, dental implants were placed in the reconstructed jaws and bone biopsies were harvested...
September 28, 2016: Implant Dentistry
Yukimori Isoda, Eisaku Imamura, Daisuke Ueno, Tsubasa Akaike, Yoshiki Hamada
Iliac particulate cancellous bone and marrow (PCBM) is still the most predictable autogenous graft material for vertical ridge reconstruction because of its high cell content as well as osteoinductive and osteoconductive properties. However, postoperative meralgia paresthetica, gait disturbance, pain, and bleeding have been reported following conventional harvesting from the anterior iliac crest. We present a case of minimally invasive harvesting of iliac PCBM. A short incision was made, and the iliac crest was exposed after elevation of the periosteal membrane...
December 2016: Int J Implant Dent
Gerhard M Hobusch, Philipp T Funovics, Cynthia Hourscht, Stephan E Domayer, Stephan E Puchner, Martin Dominkus, Reinhard Windhager
No abstract text is available yet for this article.
October 10, 2016: Knee
A A Shumilova, M P Myltygashev, A K Kirichenko, E D Nikolaeva, T G Volova, E I Shishatskaya
The study describes preparation and testing of porous 3D implants of natural degradable polymer of 3-hydroxybutyric acid P(3HB) for regeneration of bone tissue defects. The ability of the P(3HB) implants to favor attachment and facilitate proliferation and directed differentiation of mesenchymal stem cells (MSCs) was studied in the culture of MSCs isolated from bone marrow and adipose tissue. Tissue-engineered hybrid systems (grafts) constructed by using P(3HB) and P(3HB) in combination with osteoblasts were used in experiments on laboratory animals (n=48) with bone defect model...
October 14, 2016: Journal of Biomedical Materials Research. Part A
Cassio Eduardo Raposo-Amaral, Rafael Denadai, Enrico Ghizoni, Cesar Augusto Raposo-Amaral
BACKGROUND: Although craniofacial bone correction is the essential step in hypertelorbitism correction, the final result depends on the management of soft tissue deformities. The purpose of this study was to review our surgical strategies for soft tissue reconstruction in hypertelorbitism correction. METHODS: A retrospective study was performed of consecutive patients with hypertelorbitism, undergoing hypertelorbitism correction between 2007 and 2014. All aspects related to the craniofacial surgical procedures (number and type of procedures, outcomes, and complications) were verified through medical records, clinical photographs, and interviews with all patients...
October 6, 2016: Annals of Plastic Surgery
J Pauchot, A-P Sergent, G Leclerc, I Pluvy, L Obert
The induced membrane technique is used for bone reconstruction. It is based on the osteoinductive properties of a membrane induced by the insertion of a PMMA cement spacer. We will describe a simple, cost-effective method in which the body of a syringe is used to facilitate the cement introduction, allow insertion of a regular spacer, contain the cement volume in the extension of the diaphysis and protect the underlying tissues from the exothermic reaction during PMMA polymerisation.
June 2016: Hand Surgery and Rehabilitation
Alexandre Terrier, Valérie Parvex, Hannes A Rüdiger
INTRODUCTION: In total hip arthroplasty, cup medialisation with compensatory increase of femoral offset has been proposed to increase the moment arms of abductor muscles. However, this technique is associated with a loss of acetabular bone stock. Previous data indicates that the potential benefit is not constant among patients and is likely related to patient anatomy. METHOD: Therefore, to be able to select patients who would benefit most from this technique, we measured several anatomical parameters of the pelvis and femur in 15 patients; and evaluated correlations between them and the changes of moment arms associated with cup medialisation...
October 8, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Kevin P Murphy, Patrick D McLaughlin, Maria Twomey, Vincent E Chan, Fiachra Moloney, Adrian J Fung, Faimee E Chan, Tafline Kao, Siobhan B O'Neill, Benjamin Watson, Owen J O'Connor, Michael M Maher
INTRODUCTION: We assess the ability of low-dose hybrid iterative reconstruction (IR) and 'pure' model-based IR (MBIR) images to maintain accurate Hounsfield unit (HU)-determined tissue characterization. METHODS: Standard-protocol (SP) and low-dose modified-protocol (MP) CTs were contemporaneously acquired in 34 Crohn's disease patients referred for CT. SP image reconstruction was via the manufacturer's recommendations (60% FBP, filtered back projection; 40% ASiR, Adaptive Statistical iterative Reconstruction; SP-ASiR40)...
October 13, 2016: Journal of Medical Imaging and Radiation Oncology
Emmy Verheij, Henricus G X M Thomeer, Frank A Pameijer, Vedat Topsakal
Van Maldergem syndrome (VMS) is a very rare syndrome that was first described in 1992. The main features of this syndrome comprise intellectual disability, blepharo-naso-facial malformation, and hand anomalies. Almost all nine described patients have been shown to be affected by conductive hearing impairment attributed to microtia, and atresia of the outer ear canal. Here, we present a VMS patient with congenital malformations of the middle ear as the main reason for severe conductive bilateral hearing impairment...
October 14, 2016: American Journal of Medical Genetics. Part A
John Ham, Mark Flipsen, Marianne Koolen, Arnard van der Zwan, Konrad Mader
Multiple osteochondromas (MO) are a rare autosomal dominant disorder characterized by the presence of osteochondromas located on the long bones and axial skeleton. Patients present with growth disturbances and angular deformities of the long bones as well as limited motion of affected joints. Forearm involvement is found in a considerable number of patients and may vary from the presence of a simple osteochondroma to severe forearm deformities and radial head dislocation. Patients encounter a variety of problems and symptoms e...
October 13, 2016: Strategies in Trauma and Limb Reconstruction
Bibek K Rai, Raju Vaishya, Amit Kumar Agarwal
Open segmental fractures of both bones of the forearm with the loss of the middle segment of the radius is a rare injury in children. An eight-year-old boy presented to our clinic four days following a road traffic accident. The child's mother was carrying a 12-cm long extruded and soiled segment of the radius bone. The extruded bone segment seemed necrotic, and we decided not to use it for replantation. The wound over the forearm fracture was infected. It was debrided and regularly dressed until it became healthy...
September 8, 2016: Curēus
Xinning Li, Antonio Cusano, Josef Eichinger
Shoulder dislocations are a common injury, with anterior shoulder dislocation among male patients being the most common presentation. A patient with recurrent shoulder instability, anterior-superior escape, and chronic subscapularis tendon rupture following multiple shoulder stabilization surgeries presents the surgeon with a complex and challenging case. This report describes a 40-year-old man with an extensive left shoulder history that included a failed Latarjet procedure, an irreparable, chronic subscapularis tear with grade 4 Goutallier fatty infiltration, and associated anterior-superior escape...
October 13, 2016: Orthopedics
Rachel M Frank, Anthony A Romeo, Matthew T Provencher
Anterior glenoid bone loss is present in nearly all cases of recurrent anterior glenohumeral instability. Treating glenoid bone loss in the setting of recurrent instability is challenging, and often, soft tissue stabilization procedures in isolation are inadequate. The nonanatomic, incongruous joint resulting from most bony augmentation procedures has motivated investigators to find an alternative solution. Recently, the use of fresh distal tibia allograft has been reported as an anatomic, osteoarticular reconstructive option for restoring the glenoid arc and maintaining glenohumeral congruency...
October 13, 2016: Orthopedics
Christian Diekmann, Philipp Winkels, Michael Fehr, Niklas von Freeden, Oliver Harms
OBJECTIVE: To define the radiographic origin and insertion of the canine medial glenohumeral ligament (MGHL) at the scapula and the humerus of dogs as radiographic aim points for the surgical ligament reconstruction. MATERIAL AND METHODS: The forelimbs (n = 20) from 10 adult, orthopaedically unaffected dogs (> 20 kg body weight) were used. Radiopaque markers (1 mm steel bullet) were placed into the visual origin and insertion of the MGHL. Finally, virtual digital radiographs were produced in medio-lateral and cranio-caudal projection and the location of the origin and insertion points were expressed using four different methods (4x4 grid box method, percentage position in the grid box for the medio-lateral projection, the percentage position orientated at different landmarks and the clock-face scale method)...
October 13, 2016: Tierärztliche Praxis. Ausgabe K, Kleintiere/Heimtiere
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