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https://www.readbyqxmd.com/read/28526166/transhumeral-anterior-radial-nerve-transposition-to-simplify-anticipated-future-humeral-reconstruction
#1
REVIEW
David A Muzykewicz, Reid A Abrams
Anterior transhumeral radial nerve transposition has been described in the treatment of humeral shaft fracture to protect the nerve from implant irritation or callus entrapment. Transposing the radial nerve through a facilitating humeral defect also simplifies revision surgery should nonunion result. Here we describe a surgical technique for anterior transhumeral radial nerve transposition for complex humeral reconstruction when subsequent revision surgery is anticipated. Three cases are used for illustration: (1) revision of a total elbow arthroplasty with periprosthetic fracture; (2) revision of a total elbow arthroplasty after aseptic loosening from an allograft/prosthesis composite; and (3) septic humeral nonunion with substantial bone loss...
May 16, 2017: Journal of Hand Surgery
https://www.readbyqxmd.com/read/28526023/high-incidence-of-periprosthetic-joint-infection-with-propionibacterium-acnes-after-the-use-of-a-stemless-shoulder-prosthesis-with-metaphyseal-screw-fixation-a-retrospective-cohort-study-of-241-patients-propionibacter-infections-after-eclipse-tsa
#2
Lisa Johansson, Nils P Hailer, Hans Rahme
BACKGROUND: A stemless shoulder prosthesis with humeral metaphyseal screw fixation was introduced in order to save bone-stock and to facilitate reconstruction of biomechanics (Eclipse®). The aim of this study was to analyze whether the risk of infection is different with this implant compared to conventional shoulder prosthesis. METHODS: Two hundred and forty-one patients (54.8% females) were operated with a shoulder arthroplasty and followed for median 2.0 (0...
May 19, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28525489/minimum-5-year-follow-up-results-for-occipitocervical-fusion-using-the-screw-rod-system-in-craniocervical-instability
#3
Kei Ando, Shiro Imagama, Zenya Ito, Kazuyoshi Kobayashi, Hideki Yagi, Ryuichi Shinjo, Tetsuro Hida, Kenyu Ito, Yoshimoto Ishikawa, Naoki Ishiguro
STUDY DESIGN: Retrospective clinical study. OBJECTIVE: To evaluate the clinical outcome of patients who had undergone occipitocervical (OC) fusion using pedicle screws and rods over a minimum 5-year follow-up. SUMMARY OF BACKGROUND DATA: Few studies have evaluated occipitocervical (OC) fusion using pedicle screws and rods for long-term follow-up. METHODS: Twenty-seven consecutive patients treated underwent posterior OC fusion using pedicle screws and rods over a minimum 5-year follow-up...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28524179/a-fkbp5-mutation-is-associated-with-paget-s-disease-of-bone-and-enhances-osteoclastogenesis
#4
Bingru Lu, Yulian Jiao, Yinchang Wang, Jing Dong, Muyun Wei, Bin Cui, Yafang Sun, Laicheng Wang, Bingchang Zhang, Zijiang Chen, Yueran Zhao
Paget's disease of bone (PDB) is a common metabolic bone disease that is characterized by aberrant focal bone remodeling, which is caused by excessive osteoclastic bone resorption followed by disorganized osteoblastic bone formation. Genetic factors are a critical determinant of PDB pathogenesis, and several susceptibility genes and loci have been reported, including SQSTM1, TNFSF11A, TNFRSF11B, VCP, OPTN, CSF1 and DCSTAMP. Herein, we report a case of Chinese familial PDB without mutations in known genes and identify a novel c...
May 19, 2017: Experimental & Molecular Medicine
https://www.readbyqxmd.com/read/28523324/anatomical-features-and-prosthetic-considerations-of-edentulous-patients-with-mandibular-reconstruction-with-autograft-performed-more-than-40-years-ago
#5
Cătălina Murariu-Măgureanu, Cristina Teodora Preoteasa, Laura Iosif, Marina Imre, Marian Cuculescu, Elena Preoteasa
In this manuscript there are presented two cases, both with mandibular reconstruction with autograft harvested from the iliac crest, performed more than 40 years ago, but with different bone defect etiology, i.e., mandibular dysplasia and mandibular fracture, both having currently extensive tooth loss in the mandible, being in need for prosthetic rehabilitation. These cases confirm that reconstructive surgery of mandibular bone defects with autograft from iliac crest has a satisfactory long-term outcome, providing acceptable conditions for prosthetic rehabilitation...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28523088/treatment-of-a-large-traumatic-encephalocele-with-titanium-mesh
#6
Alan Motta do Canto, Manuela Monteiro Pinotti, Fernando Alves Maciel, Alexandre Bossi Todeschini, Guilherme Brasileiro Aguiar, Ronaldo Rodrigues de Freitas
Encephalocele is defined as protrusion of cranial contents beyond the normal confines of the skull. Although most encephalocele cases have a congenital etiology, fractures of the skull base can cause traumatic encephalocele. In most encephalocele cases, the bone defect presents reduced dimensions and the endoscopic treatment is generally performed to reconstruct the area using mucosal and/or fat grafts. This article sought to report on a rare case of traumatic encephalocele associated with an extensive defect of the anterior skull base...
June 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28523085/free-bone-grafts-for-mandibular-reconstruction-in-patients-who-have-not-received-radiotherapy-the-6-cm-rule-myth-or-reality
#7
Baljeet Nandra, Tirbod Fattahi, Tim Martin, Prav Praveen, Rui Fernandes, Sat Parmar
Bony reconstruction of the mandible after surgical resection results in improved rehabilitation and aesthetics. Composite tissue transfer has transformed reconstruction, particularly in patients who have received radiotherapy. However, there is morbidity related to free tissue transfer. Free nonvascularized bone grafts have much lower morbidity. Surgeons believe that free bone grafts greater than 6.0 cm are prone to failure. The aims of this study was to assess whether bone grafts greater than 6.0 cm in length have a high risk of failure...
June 2017: Craniomaxillofacial Trauma & Reconstruction
https://www.readbyqxmd.com/read/28522383/cranium-bifidum-occultum-associated-with-hypertelorism-treated-with-posterior-vault-reconstruction-and-orbital-box-osteotomies-case-report-and-technical-note
#8
Rimal H Dossani, David M Yates, Piyush Kalakoti, Anil Nanda, Christina Notarianni, Jennifer Woerner, Ghali E Ghali
Cranium bifidum occultum is a disorder of skull ossification presenting as an enlarged posterior fontanelle in the upper posterior angle of the parietal bone near the intersection of the sagittal and lambdoid sutures. The standard treatment for cranium bifidum occultum is observation. We present a case of a 5-year-old boy who presented with a 15x4.5 cm midline posterior cranial vault defect consistent with diagnosis of cranium bifidum occultum associated with orbital hypertelorism and a widened nose. The patient underwent posterior vault reconstruction for correction of cranium bifidum occultum defect followed by bifrontal craniotomy and orbital box osteotomies for correction of orbital hypertelorism and nasal deformity...
May 15, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28522297/three-dimensional-spheroid-culture-promotes-the-stemness-maintenance-of-cranial-stem-cells-by-activating-pi3k-akt-and-suppressing-nf-%C3%AE%C2%BAb-pathways
#9
Da He, Ren-Xian Wang, Jian-Ping Mao, Bin Xiao, Da-Fu Chen, Wei Tian
Multipotent stem cells are one of the most powerful tools available for the bone regeneration. However, owing to various limitations, including a lack of tissue-specific stem cell identification, reconstruction of large cranial bone defects remains challenging. In the current study, we isolated a population of Sca-1(+)CD105(+)CD140a(+) stem cells from adult mouse calvarium and cultured them as three-dimensional spheroids. Although these cells shared similar surface antigens when grown in either monolayers or spheroids, the cranial stem cells grown in spheroids possessed enhanced multipotency and proliferation capacity...
May 15, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/28522238/biomechanical-comparison-of-four-coupled-fixation-systems-for-acl-reconstruction-with-bone-socket-or-full-tunnel-on-the-tibial-side
#10
Edoardo Monaco, Mattia Fabbri, Riccardo Maria Lanzetti, Andrea Del Duca, Luca Labianca, Andrea Ferretti
BACKGROUND: To compare in an animal model the biomechanical properties of four coupled fixation devices currently used in ACL reconstruction. Three out of four devices used a full tibial tunnel with an interference screw, while the other one system used a tibial socket and an adjustable loop suspension device. The null hypothesis is that there are no biomechanical differences between all the techniques tested. METHODS: Thirty two femur-graft-tibia complexes were mounted on a tensile machine using bovine digital extensor tendons, porcine knees and four different fixation device combinations: After a preconditioning with a tensile load of 90N for five minutes, 1000cycles between 0 and 150N were applied to the complex before the final pulled to failure...
May 15, 2017: Knee
https://www.readbyqxmd.com/read/28522207/outcomes-of-post-traumatic-tibial-osteomyelitis-treated-with-an-orthofix-lrs-versus-an-ilizarov-external-fixator
#11
Yilizati Yilihamu, Ajimu Keremu, Alimujiang Abulaiti, Xiayimaierdan Maimaiti, Peng Ren, Aihemaitijiang Yusufu
OBJECTIVE: To compare the therapeutic effects of the Orthofix limb reconstruction system (LRS) versus the Ilizarov external fixator on osteomyelitis of a tibial bone defect. MATERIALS AND METHODS: Among 153 patients hospitalized for bone lengthening therapy from January 1, 1996 to January 1, 2015, 129 patients were selected for a retrospective analysis. Forty-three of the candidate patients were treated using the Orthofix LRS and the other 86 were treated using an Ilizarov external fixator...
May 3, 2017: Injury
https://www.readbyqxmd.com/read/28520823/comparison-of-tunnel-and-crestal-incision-techniques-in-reconstruction-of-localized-alveolar-defects
#12
Nur Altiparmak, Sina Uckan, Burak Bayram, Sıdıka Soydan
PURPOSE: The aim of this study was to compare the complication rates of recipient sites prepared using two incision techniques: crestal and tunnel. MATERIALS AND METHODS: In this prospective study, patients underwent augmentation procedures (68 patients; 75 sites) by the same surgeon that were performed consecutively using the crestal incision technique (27 horizontal, 10 vertical; crestal group) or the tunnel incision technique (27 horizontal, 11 vertical; tunnel group)...
May 18, 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28516962/design-of-a-customised-bridging-mandibular-prosthesis-for-complex-reconstruction-a-pilot-study
#13
A Tarsitano, S Battaglia, A Sandi, C Marchetti
The gold standard for mandibular reconstruction is universally recognised and consists of the replacement of the bony part of the mandible with a bony microvascular free flap supported by a reconstructive plate. Although this procedure is feasible and reproducible in most patients, at times poor oncological prognosis or poor performance status force surgeons to consider other reconstructive solutions. In these cases, the main alternative in reconstructing a mandibular defect is represented by bridging plates combined with soft tissue flaps...
June 2017: Acta Otorhinolaryngologica Italica
https://www.readbyqxmd.com/read/28514314/infected-tibia-defect-fractures-treated-with-the-masquelet-technique
#14
Julia Mühlhäusser, Jörg Winkler, Reto Babst, Frank J P Beeres
The treatment after open and infected fractures with extensive soft tissue damage and bone deficit remains a challenging clinical problem. The technique described by Masquelet, using a temporary cement spacer to induce a membrane combined with reconstructive soft tissue coverage, is a possible solution. This study describes the work-up, operative procedure, complications, and the outcome of a homogenous group of patients with an open and infected tibia fracture and segmental bone loss treated with the Masquelet technique (MT)...
May 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28513894/the-dentoalveolar-prosthesis-a-novel-approach-in-the-reconstruction-of-hard-and-soft-tissue-deficiencies
#15
James K Doll, Peter Barndt, Gerald Grant
A clinical problem commonly encountered by the advanced restorative dentist is a requirement to replace missing teeth and the supporting alveolus in areas adjacent to healthy or manageable dentition. A potential solution could utilize a dentoalveolar prosthesis fabricated on two or more implants in the edentulous area. The implant substructure, or framework, may be cast, milled, or selectively laser melted from a variety of metals. A superstructure, or ceramic overlay incorporating a ceramic or composite resin gingival tissue component, is constructed to fit over the implant substructure and luted to the substructure with resin cement...
May 17, 2017: Journal of Prosthodontics: Official Journal of the American College of Prosthodontists
https://www.readbyqxmd.com/read/28513219/a-temporofrontal-fascia-flap-that-penetrated-temporal-muscle-for-the-reconstruction-of-an-anterior-skull-base-bone-and-dura-a-technical-case-report
#16
Makoto Katsuno, Koichi Uchida, Akira Matsuno
During skull base surgery, reconstruction of the dura is a very important procedure. Here, the use of a temporofrontal pedicled fascia flap tunnelled between temporal muscle fibres is described. This technique is easily performed and has a low postoperative morbidity, including skin and temporal muscle complications.
May 17, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28512553/juxtacortical-mandibular-chondrosarcoma-during-pregnancy-a-case-report
#17
Paolo Cariati, Almudena Cabello-Serrano, Fernando Monsalve-Iglesias, Miguel Perez-de Perceval-Tara, Ildefonso Martinez-Lara
Chondrosarcoma is one of the most common malignant bone tumors in adults. It use to affect upper arm, pelvis and thigh bone. A wide surgical extirpation represent the gold standard to treat this disorder. In fact, radiotherapy and chemotherapy are no useful. Interestingly, chondrosarcoma is rare in head and neck (HNCS) and extremely uncommon during pregnancy. Thus, there is a lack of evidence about the proper treatment in these cases. A wide surgical extirpation is also considered the most effective procedure in HNCS...
May 2017: Journal of Clinical and Experimental Dentistry
https://www.readbyqxmd.com/read/28509443/hemodynamically-stimulated-and-in-vivo-generated-axially-vascularized-soft-tissue-free-flaps-for-closure-of-complex-defects-evaluation-in-a-small-animal-model
#18
Volker J Schmidt, Johanna O Wietbrock, Nico Leibig, Jochen F Hernekamp, Dominic Henn, Christian A Radu, Ulrich Kneser
The arteriovenous (AV) loop model permits the creation of significant volumes of axially vascularized tissue that represents an alternative to conventional free flaps, circumventing their common limitations. However, such AV-loop-based flaps have never before been examined in standardized animal models with respect to their suitability for reconstruction of critical bone exposing defects. In the course of our preliminary studies, we implemented a novel defect model in rats that provides standardized and critical wound conditions and evaluated whether AV-loop-generated flaps are suitable for free microsurgical transfer and closure of composite defects...
May 16, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28508770/romuald-w%C3%A4-g%C3%A5-owski-1876-1935-orthopaedic-surgeon-forgotten-pioneer-of-limb-saving-tumour-surgery
#19
Marek Durakiewicz, Mirosław Jabłoński, Aneta Zarębska
On May 16, 1914, The Lancet Journal published a paper by Romuald Węgłowski, a Polish-born professor of Moscow University, entitled "Malignant tumours of bones: a new method in conservative operative treatment." The idea of biological resection presented in the paper consisted in thermocoagulation of the apparently cancerous part of a bone with a jet of steam. According to the author, dead bone rid of live malignant cells reconstructed itself quickly, which helped to preserve the functionality of the organ without considerable limitations...
April 12, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28508295/mri-based-tendon-bone-healing-is-related-to-the-clinical-functional-scores-at-the-first-year-after-anterior-cruciate-ligament-reconstruction-with-hamstring-tendon-autograft
#20
Hong-Yun Li, Hong Li, Zi-Ying Wu, Ji-Wu Chen, Shi-Yi Chen
PURPOSE: The correlation between tendon bone healing and clinical functional scores after anterior cruciate ligament reconstruction (ACLR) using four-stranded hamstring tendon autograft has rarely being reported. The purpose of this study was to determine the correlation between magnetic resonance imaging (MRI)-based tendon bone healing and clinical functional scores after ACLR using hamstring tendon. METHODS: Thirty-eight patients with ACLR using four-stranded hamstring tendon autograft were included in this prospective study in the authors' hospital from 2013 to 2014...
May 15, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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