keyword
https://read.qxmd.com/read/38545772/evaluating-the-benefit-of-virtual-surgical-planning-on-bony-union-rates-in-head-and-neck-reconstructive-surgery
#1
JOURNAL ARTICLE
Farahna Sabiq, Abhiram Cherukupalli, Mohammad Khalil, Linh K Tran, Jamie J Y Kwon, Thomas Milner, James S Durham, Eitan Prisman
OBJECTIVES: Virtual surgical planning (VSP) has gained acceptance because of its benefits in obtaining adequate resection, achieving cephalometric accuracy, and reducing operative time. The aim of this study is to compare the rate of union between VSP and free-hand surgery (FHS), identify predictors of non-union and evaluate the difference in operative time. METHODS: Post-operative CT were retrospectively reviewed for 123 patients who underwent maxillary or mandibular reconstruction between 2014 and 2021 using either VSP or FHS...
March 28, 2024: Head & Neck
https://read.qxmd.com/read/38545597/a-rare-case-report-of-osteosarcoma-of-maxilla-with-double-free-flap-reconstruction
#2
Surendra K Dabas, Nandini N Menon, Reetesh Ranjan, Himanshu Shukla, Bikas Gurung, Sukirti Tiwari, Yash Chaddha, Ajit Sinha, Rahul Kapoor, Vinay Kumar Verma, Saurabh Arora, Ashwani Sharma, Jasbir Singh, Rishu Singal, Sandeep Kumar Mohan, Seema Sachan
Osteosarcomas are rare and highly malignant bone tumours which are composed of malignant mesenchymal cells producing osteoid or immature bone. Maxillary osteosarcomas are rare tumours accounting for less than 1% of head and neck malignancies. Aggressive surgical resection is the main modality of treatment with good reconstruction. Due to the complex anatomy and location of maxilla as well as its proximity to the skull, resection with negative margins is always a challenge and so is the reconstruction so as to reduce the morbidity of the patient and to also give a good functional and cosmetic outcome...
March 2024: Indian Journal of Surgical Oncology
https://read.qxmd.com/read/38545591/reconstruction-of-intercalary-bone-defects-after-tumour-resection-with-the-use-of-a-free-vascularised-fibular-graft-the-concealed-advantages-of-the-external-fixator
#3
JOURNAL ARTICLE
Tatiana Charles, Frédéric Schuind, Antonia Gkotsi, Michael Gebhart, Marc Jayankura
The free vascularised fibular graft represents the mainstay of intercalary bone defect reconstruction after tumour resection. Different reconstruction techniques are described, favouring internal fixation and possibly overlooking potential advantages of external fixation. This series is a description of the technique performed at our institution using an external fixator for the reconstruction of segmental bone defects which enables to maintain limb length and rotational alignment after large segmental bone resection...
March 2024: Indian Journal of Surgical Oncology
https://read.qxmd.com/read/38545582/chondroblastoma-of-thoracic-vertebrae-a-case-report-and-review-of-the-literature
#4
REVIEW
Alireza Tabibkhooei, Parisa Javadnia
Chondroblastoma is a rare benign cartilaginous bone tumor typically seen at the epiphysis of long axial bones. In this regard, there are rare findings about spinal chondroblastomas. We report a 29-year-old man with T1 vertebral chondroblastoma misdiagnosed with a traumatic fracture following an accident. The patient was admitted to our clinic with a chief complaint of axial back pain and kyphosis following posterior spinal fixation. We report his clinical and imaging data before his past operation and at this admission...
March 2024: Indian Journal of Surgical Oncology
https://read.qxmd.com/read/38545581/functional-augmentation-with-the-use-of-a-mesh-in-a-traditional-cement-spacer-reconstruction-in-proximal-humerus-resections
#5
Amar Kamat, Anto Anand Gopurathingal, Pramod Chinder, Suraj Hindiskere
Cement spacer as a reconstruction technique in proximal humerus resections in malignant and benign conditions is well established. Functional outcome of any reconstruction is decided by how well soft tissue reconstruction has been carried out. The cement spacer technique allows soft tissue reattachment at any site required as compared to prosthetic reconstruction, but such reattachment sites have to be decided before setting of the cement. Here we describe a technique in which a prolene mesh is used as a mould for the cement...
March 2024: Indian Journal of Surgical Oncology
https://read.qxmd.com/read/38545579/surgical-outcomes-in-paediatric-lower-limb-sarcomas-a-single-institutional-experience
#6
JOURNAL ARTICLE
Sreeraj Rajan, Suraj Hindiskere, Pramod S Chinder
Primary bone sarcomas are rare tumours, comprising approximately 1-2% of adult and around 13-15% of all paediatric cancers. Limb salvage surgery is a challenge in complex musculoskeletal tumours. Young age adds to its complexity, since the growth potential of the reconstruct has to be considered to have optimal function of the salvaged limb. An observational retrospective study performed on 52 paediatric patients between Jan 2011 and Dec 2018 with malignant bone tumour of lower limbs had been assessed for postoperative functional outcomes with questionnaires and clinico-radiological examination for functional and oncological outcome...
March 2024: Indian Journal of Surgical Oncology
https://read.qxmd.com/read/38545571/grade-3-proximal-humerus-giant-cell-tumour-is-resection-and-reconstruction-with-prosthesis-a-valuable-option
#7
JOURNAL ARTICLE
Arun John Paul, Vijay T K Titus
Grade 3 proximal humerus giant cell tumours are uncommon and the results of their surgical management with prosthetic replacement are not well established. We retrospectively studied patients with grade 3 giant cell tumours of proximal humerus treated with excision and prosthetic replacement from January 2009 and December 2018. We identified 13 patients who underwent tumour excision and prosthetic replacement. There were 7 (53.8%) men and 6 (46.2%) women. The mean age at diagnosis was 30.4 years (range 16-48 years)...
March 2024: Indian Journal of Surgical Oncology
https://read.qxmd.com/read/38544566/on-the-origins-of-endothermy-in-amniotes
#8
JOURNAL ARTICLE
Mathieu G Faure-Brac, Holly N Woodward, Paul Aubier, Jorge Cubo
A recent study showed evidence that endothermy was ancestral for amniotes using a variety of proxies and a large sample of taxa. However, it did not include numerous crucial taxa. We reevaluated this hypothesis using a large sample of early amniotes and tetrapodomorphs. We inferred the probability of endothermy for each taxon using a model constructed through phylogenetic logistic regressions and using the size of their bone vascular cavities. An ancestral state reconstruction, based on these inferences, was performed to assess the probability of an ancestral endothermy at the node Amniota...
April 19, 2024: IScience
https://read.qxmd.com/read/38544544/multiple-metacarpal-loss-secondary-to-tuberculous-dactylitis-challenges-and-management-a-case-report
#9
Maulin Shah, Godhasiri Ponugoti, Santosh Raibhagkar, Nitingiri Goswami, Joyance James, Meet Jain
Tuberculous dactylitis is infrequently seen after the age of 6 years. The index and middle fingers are the most common sites. Early diagnosis is essential to eradicate the infection. Delay in diagnosis and management leads to extensive involvement which may require surgical intervention. The current literature reveals conservative management gives satisfactory results in early stages. Though surgical intervention in Tuberculous dactylitis is seldom required, delay in diagnosis and management leads to extensive involvement of the bone and sequestration which does not respond to Anti Tubercular Therapy and needs staged surgical interventions...
April 2024: Indian Journal of Orthopaedics
https://read.qxmd.com/read/38544336/prediction-of-jaw-opening-function-after-mandibular-reconstruction-using-subject-specific-musculoskeletal-modelling
#10
JOURNAL ARTICLE
Junpeng Chen, Jing Wang, Jianqiao Guo, Xinyue Wang, Yanfeng Kang, Yang Wang, Chuanbin Guo
BACKGROUND: Mandibular reconstruction patients often suffer abnormalities in the mandibular kinematics. In silico simulations, such as musculoskeletal modelling, can be used to predict post-operative mandibular kinematics. It is important to validate the mandibular musculoskeletal model and analyse the factors influencing its accuracy. OBJECTIVES: To investigate the jaw opening-closing movements after mandibular reconstruction, as predicted by the subject-specific musculoskeletal model, and the factors influencing its accuracy...
March 27, 2024: Journal of Oral Rehabilitation
https://read.qxmd.com/read/38542232/multilayer-electrospun-scaffolds-of-opposite-charged-chitosans
#11
JOURNAL ARTICLE
Cristian Balducci, Martina Roso, Annj Zamuner, Lucia Falcigno, Gabriella D'Auria, Paola Brun, Monica Dettin
Chitosan (CS) is a polysaccharide obtainable by the deacetylation of chitin, which is highly available in nature and is consequently low-cost. Chitosan is already used in the biomedical field (e.g., guides for nerve reconstruction) and has been proposed as a biomaterial for tissue regeneration in different body districts, including bone tissue. The interest in chitosan as a biomaterial stems from its ease of functionalization due to the presence of reactive groups, its antibacterial properties, its ease of processing to obtain porous matrices, and its inherent similarity to polysaccharides that constitute the human extracellular matrix, such as hyaluronic acid (HA)...
March 13, 2024: International Journal of Molecular Sciences
https://read.qxmd.com/read/38542018/impact-of-prosthetic-material-and-restoration-type-on-peri-implant-bone-resorption-a-retrospective-analysis-in-a-romanian-sample
#12
JOURNAL ARTICLE
Denisa Tabita Sabău, Raluca Iulia Juncar, Abel Emanuel Moca, Teofana Bota, Rahela Tabita Moca, Mihai Juncar
Background/Objectives: This research investigates the nuanced factors influencing peri-implant bone resorption in implant-supported fixed prostheses, with a focus on age, gender, implant location, time since prosthetic loading, and material characteristics. Methods: Records from a dental clinic in Oradea, Romania, between 1 January 2017 and 1 January 2023, were scrutinized and were selected by means of purposive sampling. All records were analyzed between 1 May 2023 and 15 June 2023. A total of 160 implants were included, and the prosthetic restorations were either metal-ceramic or zirconia...
March 20, 2024: Journal of Clinical Medicine
https://read.qxmd.com/read/38541943/prevention-of-cerebrospinal-fluid-leakage-in-the-anterior-transpetrosal-approach
#13
JOURNAL ARTICLE
Shunsuke Shibao, Kazunari Yoshida, Ryota Sasao, Masaaki Nishimoto
Background: The anterior transpetrosal approach (ATPA) is effective for reaching petroclival lesions, and it allows for complications such as impaired venous return and neuropathy to be resolved. However, there is still room for improvement regarding cerebrospinal fluid (CSF) leakage. Here, we aim to focus on describing specific preoperative, intraoperative, and postoperative countermeasures for preventing CSF leakage when using the ATPA. Methods: Eleven patients treated using the ATPA, who were treated at our hospital from June 2019 to February 2023, were included in this descriptive study...
March 16, 2024: Journal of Clinical Medicine
https://read.qxmd.com/read/38541876/functional-and-rehabilitative-outcomes-of-patients-affected-by-bone-cancer-of-the-upper-limb-treated-with-mutars-prosthesis-a-narrative-review
#14
REVIEW
Sefora Codazza, Paola Emilia Ferrara, Adelaide Aprovitola, Mariantonietta Ariani, Fabiana La Cagnina, Daniele Coraci, Giorgio Ferriero, Gianpaolo Ronconi
Megaprostheses are well-known, reliable, and effective reconstruction prostheses used in oncologic surgery for limb salvage in patients affected by primary or metastatic bone tumors. Rehabilitation plays a major role after MUTARS replacement, with the aim of improving function after surgery and maintaining the highest possible quality of life. Only a few studies have been published about the use of megaprostheses for the upper limb. The aim of this narrative review is to describe the results of functional and rehabilitative outcomes of patients affected by bone primary or metastatic bone cancer of the upper limb and surgically treated with MUTARS prostheses...
March 13, 2024: Journal of Clinical Medicine
https://read.qxmd.com/read/38541808/multidisciplinary-management-of-cutaneous-squamous-cell-carcinoma-of-the-scalp-an-algorithm-for-reconstruction-and-treatment
#15
JOURNAL ARTICLE
Manuela Rodio, Matilde Tettamanzi, Emilio Trignano, Silvia Rampazzo, Pietro Luciano Serra, Federica Grieco, Riccardo Boccaletti, Filippo Veneziani Santonio, Giovanni Maria Fadda, Fabrizio Sanna, Dalila Di Mario, Corrado Rubino
Background : Scalp-associated cutaneous squamous cell carcinoma (cSCC) presents formidable treatment challenges, especially when it leads to full-thickness defects involving bone. Aggressive or recurring cases often demand a multidisciplinary approach. Leveraging our surgical experience and a literature review, we introduce a therapeutic algorithm to guide the selection of reconstruction methods, particularly for locally advanced lesions, furthermore showing the synergy between surgery and other therapies for comprehensive, multidisciplinary disease management...
March 10, 2024: Journal of Clinical Medicine
https://read.qxmd.com/read/38541743/generative-adversarial-network-based-image-reconstruction-for-the-capacitively-coupled-electrical-impedance-tomography-of-stroke
#16
JOURNAL ARTICLE
Mikhail Ivanenko, Damian Wanta, Waldemar T Smolik, Przemysław Wróblewski, Mateusz Midura
This study investigated the potential of machine-learning-based stroke image reconstruction in capacitively coupled electrical impedance tomography. The quality of brain images reconstructed using the adversarial neural network (cGAN) was examined. The big data required for supervised network training were generated using a two-dimensional numerical simulation. The phantom of an axial cross-section of the head without and with impact lesions was an average of a three-centimeter-thick layer corresponding to the height of the sensing electrodes...
March 21, 2024: Life
https://read.qxmd.com/read/38541644/the-vascularized-fibula-as-salvage-procedure-in-extremity-reconstruction-a-retrospective-analysis-of-time-to-heal-and-possible-confounders
#17
JOURNAL ARTICLE
Christian Smolle, Judith C J Holzer-Geissler, Patrick Mandal, Jessica Schwaller, Gert Petje, Johannes Rois, Lars-Peter Kamolz, Werner Girsch
The vascularized fibula transfer is a well-established technique for extremity reconstruction, but operative planning and patient selection remains crucial. Although recently developed techniques for bone reconstruction, such as bone segment transfer, are becoming increasingly popular, bone defects may still require vascularized bone grafts under certain circumstances. In this study, 41 cases, 28 (68%) men and 13 (32%) women (median age: 40 years), were retrospectively analyzed. Therapy-specific data (flap vascularity [free vs...
February 28, 2024: Life
https://read.qxmd.com/read/38541572/mechanical-characteristics-of-individualized-biodegradable-augmentation-scaffold-in-vitro-pilot-study
#18
JOURNAL ARTICLE
Roko Bjelica, Vladimir Prpić, Nenad Drvar, Amir Ćatić, Dragana Gabrić
The alveolar ridge reconstruction of vertical and combined bone defects is a non-predictable procedure with varying percentages of success. The greatest challenge for vertical and combined bone augmentation is to maintain mechanical stability of the bone graft; therefore, it is mandatory to provide and preserve space for bone regeneration. The development of biomaterials and 3D printing has enabled the use of polymer scaffolds in the reconstruction of alveolar ridge defects. The aim of this pilot study was to evaluate the mechanical characteristics of an innovative individualized biodegradable polylactic acid (PLA) scaffold, under dynamic conditions, simulating biodegradation and the influence of masticatory forces...
March 20, 2024: Materials
https://read.qxmd.com/read/38538300/3d-maxillofacial-surgery-planning-one-decade-development-of-technology
#19
JOURNAL ARTICLE
D Hrušák, L Hauer, J Genčur, A Pěnkava, Micopulos
Nowadays, techniques and the use of patient specific implants seem to be the recent high technology standard in reconstructive surgery. Surgery planning is as old as the surgery procedures themselves. Any good surgeon, before entering the operating theatre, has a plan for how to proceed. It is based on knowledge and experience in combination of evaluation of all case relevant information. In fact, virtual surgery planning and CAD/CAM reflects the technological "state of the art" into the medical daily practice...
2024: Acta Chirurgiae Plasticae
https://read.qxmd.com/read/38537958/tumor-induced-osteomalacia-successfully-treated-by-en-bloc-tumor-excision-and-reconstruction-using-a-tumor-bearing-frozen-autograft-a-case-report
#20
JOURNAL ARTICLE
Martin Louie S Bangcoy, Shinji Miwa, Norio Yamamoto, Katsuhiro Hayashi, Hideji Nishida, Akihiko Takeuchi, Kentaro Igarashi, Takashi Kato, Yuta Taniguchi, Sei Morinaga, Yohei Asano, Hiroyuki Tsuchiya
BACKGROUND/AIM: Tumor-induced osteomalacia (TIO) is a rare pathology caused by overproduction of fibroblast growth factor 23 (FGF23). Its common clinical features include generalized muscle weakness, bone pain, and fractures. Complete resection of the offending tumor is the mainstay treatment. In this report, we present the first case of TIO by an FGF23 producing tumor treated using a tumor-bearing autograft treated with liquid nitrogen. CASE REPORT: A 63-year old female presented with generalized body pain, particularly in the left arm...
April 2024: Anticancer Research
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