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Tumor endoprosthesis

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https://www.readbyqxmd.com/read/29123414/low-grade-central-osteosarcoma-in-proximal-humerus-a-rare-entity
#1
Fan Tang, Li Min, Yong Zhou, Yi Luo, Chongqi Tu
Low-grade central osteosarcoma is a rare subtype of tumor with low-grade malignancy. Currently, wide resection with negative resection margin is the standard treatment for this disease. The role of neoadjuvant chemotherapy in low-grade central osteosarcoma was controversial and was mostly considered for tumors containing high-grade focal areas. Local tumor recurrences often exhibited a tumor with higher histologic grade or differentiation with the potential for metastases. In low-grade central osteosarcoma, timely wide resection after definite diagnosis can result in 5-year survival for almost 90%...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/29113670/primary-arthroplasty-in-healed-osteoarticular-allograft-in-patients-with-history-of-primary-femoral-bone-tumors
#2
Bianca M Verbeek, Courtney L Kaiser, Nuno Rui Paulino Pereira, Francis J Hornicek, Kevin A Raskin, Joseph H Schwab, Santiago A LozanoCalderón
BACKGROUND: Roughly 25-35% of patients who are treated with osteoarticular allograft for primary bone sarcomas or aggressive benign bone tumors require surgery in the long-term due to degenerative changes of the articular surface of the allograft. There are three established methods of reconstruction for this complication; a total hip arthroplasty (THA) or total knee arthroplasty (TKA) in the retained osteoarticular allograft, a proximal or distal endoprosthesis after removal of the allograft, and an allograft-prosthesis composite (APC)...
December 2017: Surgical Oncology
https://www.readbyqxmd.com/read/29113159/treatment-of-osteosarcoma-around-the-knee-in-skeletally-immature-patients
#3
Weitao Yao, Qiqing Cai, Jiaqiang Wang, Songtao Gao
Limb sparing surgery in growing young patients with malignant tumors is difficult as invasion of the physis by the tumor or surgical resection through the metaphysis may cause significant limb discrepancy following surgery. At present, hinged tumor prosthesis or biological reconstructions are the main methods following tumor resection in these patients. The aim of the present study was to assess different procedures for the treatment of osteosarcoma around knee joints in immature patients. A retrospective study of 56 patients (<15 years old, open physis) who had been treated for osteosarcoma around the knee joint between January 2007 and December 2015 was performed...
November 2017: Oncology Letters
https://www.readbyqxmd.com/read/29081066/long-term-outcomes-of-cement-in-cement-technique-for-revision-endoprosthesis-surgery
#4
Nicholas M Bernthal, Vishal Hegde, Stephen D Zoller, Howard Y Park, Jason H Ghodasra, Daniel Johansen, Frederick Eilber, Fritz C Eilber, Chandhanarat Chandhanayingyong, Jeffrey J Eckardt
BACKGROUND AND OBJECTIVE: Cemented endoprosthetic reconstruction after resection of primary bone sarcomas has been a standard-of-care option for decades. With increased patient survival, the incidence of failed endoprostheses requiring revision surgery has increased. Revision of cemented endoprotheses by cementing into the existing cement mantle (CiC) is technically demanding. METHODS: This is a retrospective review of our endoprosthesis database of 512 consecutive cemented endoprosthetic reconstructions performed for oncologic diagnoses between 1980 and 2014...
October 29, 2017: Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29033156/component-fracture-in-the-kotz-modular-femoral-tibial-reconstruction-system-an-under-reported-complication
#5
Tyler M Hauer, Matthew T Houdek, Rej Bhumbra, Anthony M Griffin, Jay S Wunder, Peter C Ferguson
BACKGROUND: Primary bone tumors of the femur are commonly reconstructed using an endoprosthesis. Different modes of implant failure have been described, including structural failure; although uncommon, this may be an under-reported complication. The purpose of this study is to examine the rates and risk factors for implant fracture of the Kotz Modular Femoral Tibial Reconstruction system (KMFTR). METHODS: Two hundred twenty-one patients (95 women and 126 men) who underwent a KMFTR reconstruction were reviewed...
September 21, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29025610/is-endoprosthesis-safer-than-internal-fixation-for-metastatic-disease-of-the-proximal-femur-a-systematic-review
#6
Alberto Di Martino, Nicolò Martinelli, Mattia Loppini, Andrea Piccioli, Vincenzo Denaro
INTRODUCTION: Metastases to the proximal femur are usually managed surgically by tumor resection and reconstruction with an endoprosthesis, or by fixation with osteosynthesis. Still controversy remains regarding the most appropriate surgical treatment. We posed the following questions: (1) Is the frequency of surgical revision greater in patients treated with internal fixation than endoprosthetic reconstruction, and (2) Do complications that do not require surgery occur more frequently in patients treated with internal fixation rather than in those with endoprosthetic reconstruction? MATERIALS AND METHODS: A systematic review was performed of those studies reporting on surgical revision and complication rates comparing the two surgical methods...
October 2017: Injury
https://www.readbyqxmd.com/read/28990681/limb-shortening-as-a-strategy-for-limb-sparing-treatment-of-appendicular-osteosarcoma-of-the-distal-radius-in-a-dog
#7
Sarah E Boston, Owen T Skinner
OBJECTIVE: To develop and report a novel limb sparing technique for the distal radius in a dog. STUDY DESIGN: Case report. ANIMAL: A 14-year-old, female spayed Labrador Retriever with an osteosarcoma of the right distal radius and a pathological fracture. A previous mast cell tumor had been treated 5 years prior to presentation with marginal excision and a full-course radiation over the right metacarpal bones. The dog had received 2 doses of palliative radiation just prior to presentation...
October 9, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28934543/long-term-results-of-intercalary-endoprosthetic-short-segment-fixation-following-extended-diaphysectomy
#8
Nicholas S Tedesco, Alexandra L Van Horn, Robert M Henshaw
Intercalary endoprosthetic reconstruction following diaphyseal resection of osseous tumors offers functional advantages through preservation of native joints adjacent to the resected defect. Use of such implants is restricted by the amount of bone available for stem fixation adjacent to the defect. This study aimed to determine whether short osseous segment fixation with acceptable outcomes and complication rate can be reliably achieved with a customized intercalary endoprosthesis following extended diaphysectomy...
September 21, 2017: Orthopedics
https://www.readbyqxmd.com/read/28865425/silver-coated-modular-megaendoprostheses-in-salvage-revision-arthroplasty-after-periimplant-infection-with-extensive-bone-loss-a-pilot-study-of-34-patients
#9
Dirk Zajonz, Undine Birke, Mohamed Ghanem, Torsten Prietzel, Christoph Josten, Andreas Roth, Johannes K M Fakler
BACKGROUND: Hip and knee replacements in patients with bone defects after infection correlates with high rates of reinfection. In this vulnerable patient population, the prevention of reinfection is to be considered superordinate to the functionality and defect bridging. The use of silver coating of aseptic implants as an infection prophylaxis is already proven; however, the significance of these coatings in septic reimplantation of large implants is still not sufficiently investigated...
September 2, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28735800/durability-of-hemiarthroplasty-for-pathologic-proximal-femur-fractures
#10
Matthew T Houdek, Cody C Wyles, Joshua R Labott, Peter S Rose, Michael J Taunton, Franklin H Sim
BACKGROUND: The hip is a common location for metastatic tumors. Due to the high loads placed through the proximal femur, surgery is often indicated to provide pain relief and restore function. Historically, these lesions are reconstructed with a hemiarthroplasty; however, there are few reports on the outcome of these reconstructions. The purpose of this study is to evaluate the outcome of hemiarthroplasty for the treatment of proximal femur metastatic disease, with a specific focus on the rates of conversion to total hip arthroplasty (THA)...
July 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28728303/-enhancing-soft-tissue-reattachment-with-artificial-mesh-in-joint-endoprosthetic-reconstruction-for-bone-tumors
#11
J S Lin, R Chen, W Yan, D D Chen
Objective: To investigate the operative method and clinical application of the BARD(®) Mesh in enhancing joint stability and function of endoprosthetic reconstruction for bone tumors. Methods: From Jan 2013 to Jun 2015, the clinical data of 51 patients aged (44.75±23.18) years underwent wide resection of tumor and endoprosthetic reconstruction using the BARD(®) Mesh were collected. Among them, 27 were male and 24 were female. The surgical treatments received by these patients included 5 shoulder arthroplasties, 12 elbow replacements, 12 hip replacements and 32 knee replacements (including 24 femoral tumors and 8 tibial tumors)...
July 23, 2017: Zhonghua Zhong Liu za Zhi [Chinese Journal of Oncology]
https://www.readbyqxmd.com/read/28684229/reverse-shoulder-endoprosthesis-for-pathologic-lesions-of-the-proximal-humerus-a-minimum-3-year-follow-up
#12
Simon Maclean, Shahbaz S Malik, Scott Evans, Jonathan Gregory, Lee Jeys
BACKGROUND: The Bayley Walker (Stanmore Implants, Elstree, UK) reversed polarity, linked shoulder replacement is designed to provide stable function in the treatment of a painful shoulder with poor soft tissue coverage. We reviewed the results of the prosthesis in destructive pathologic lesions of the proximal humerus at a United Kingdom tumor center. METHODS: We identified 8 patients (2 men, 6 women) in our database. Clinical information and functional outcome scores were collected, including range of movement, Toronto Extremity Salvage Score, the Musculoskeletal Tumor Score...
July 3, 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/28648654/gianturco-z-stent-fixation-of-a-modified-iliac-limb-stent-graft-endoprosthesis-for-the-treatment-of-malignant-superior-vena-cava-syndrome
#13
Jeffrey Forris Beecham Chick, Matthew L Osher, Kyle J Cooper, Wael E Saad, David M Williams, Minhaj S Khaja
Superior vena cava (SVC) syndrome, characterized by facial and arm swelling, is most frequently caused by intrathoracic malignancies. Decompression may be achieved with endovenous stent placement. Polytetrafluoroethylene-covered stents have shown to have higher long-term cumulative patency rates compared with uncovered stents for the treatment of malignant SVC syndrome. Unfortunately, polytetrafluoroethylene-covered stents are not readily available worldwide. Moreover, the existing armamentarium, including balloon-expandable iCAST stents (maximum diameter 10 mm) and heparin-coated Viabahn stent-graft endoprostheses (maximum diameter 13 mm), is too small to adequately treat malignant obstruction of the SVC...
June 23, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28625098/endoprosthetic-replacement-versus-cement-spacer-in-reconstruction-of-proximal-humerus-after-tumor-resection-cost-and-benefits
#14
Awad Abdelmonem Rafalla, El Sayed Abdelhalim Abdullah
BACKGROUND: Proximal end of the humerus is a common site for both primary and metastatic bone tumors. Limb salvage with endoprosthetic replacement is the most common means of reconstruction, but it has been proved that cement spacer are more beneficial for inferior shoulder function. Thus, limb salvage can be replaced by cheaper spacers especially in poor societies. PATIENTS AND METHODS: This study included 20 patients, of whom 14 were female, with a mean age of 40...
May 2017: Journal of Orthopaedic Surgery
https://www.readbyqxmd.com/read/28455561/radiographic-assessment-of-distal-femur-cemented-stems-in-tumor-endoprostheses
#15
R E Turcotte, N A Stavropoulos, J Toreson, M Alsultan
BACKGROUND: Distal femoral endoprosthesis (DFE) has become the optimal method of reconstruction in the skeletally mature patients treated for malignant bone tumor. Albeit literature has reported wide range of aseptic loosening in cemented components (6-32%), few authors showed that cement was not detrimental to long-term success of primary distal femoral implants possibly relating to cementing technique. METHODS: A series of consecutive of DFE (MRS and GMRS, Styker Orthopaedics, Mahwah, NJ) was retrospectively reviewed for evidence of loosening on plain radiographs...
August 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/28361217/the-push-through-total-femoral-prosthesis-offers-a-functional-alternative-to-total-femoral-replacement-a-case-series
#16
Jelle Gorter, Joris J W Ploegmakers, Bas L E F Ten Have, Hendrik W B Schreuder, Paul C Jutte
PURPOSE: Oncologic resections or complications of segmental femoral prostheses can result in severe bone loss of the femur for which a total femoral prosthesis (TFP) is required. This study assesses whether the loss of stability and function caused by the loss of muscle attachments can be improved by using a push-through total femoral endoprosthesis (PTTF), because it saves parts of the femur and its muscle attachments. METHODS: In this retrospective case series, ten patients aged 25-77 (mean 54) who received a PTTF between 2005 and 2014 were included for baseline, complications and survival analysis with a mean follow-up of 5...
March 30, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28265740/reconstruction-with-scapular-hemiarthroplasty-endoprosthesis-after-scapulectomy-for-malignant-tumour
#17
Li Min, Yong Zhou, Fan Tang, Wenli Zhang, Yi Luo, Hong Duan, Chongqi Tu
PURPOSE: Recently, endoprosthesis reconstruction has been used for scapular malignant tumours. Our aim is to present and evaluate the clinical indications, peri-operative technique, and mid-term clinical results. METHODS: Scapular hemiarthroplasty after total scapulectomy has been performed in 15 patients between 2011 and 2014. Clinical records and radiographs were evaluated retrospectively. RESULTS: The average follow-up was 41.2 months...
May 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28248023/-pyeloureteral-stenting-using-nitinol-stents
#18
B G Guliev, A M Zagazezhev
AIM: To test the effectiveness of nitinol stents in restoring patency of pyeloureteral segment (PUS). MATERIALS AND METHODS: Endoureteral nitinol stents were used in 54 patients. The indications for stenting were recurrent strictures of upper urinary tract and ureteral tumor obstruction in 34 and 20 patients, respectively. In 9 (16.6%) of them, including 4 women and 5 men aged 28-65 years, stenting was performed for extensive recurrent PUS strictures. In 8 patients extensive strictures resulted from various surgical interventions on the PUS...
November 2016: Urologii︠a︡
https://www.readbyqxmd.com/read/28199936/the-longitudinal-split-technique-for-narrow-canal-tibia-in-a-case-of-distal-femur-replacement-for-osteosarcoma
#19
Toru Akiyama, Shotaro Kanda, Kazuo Saita
INTRODUCTION: There are currently no available prostheses that can be used for extremely small femurs or tibias of adult patients in countries where allograft is unavailable. CASE REPORT: We report the case of a 17-year-old girl requiring special limb salvage technique for distal femur reconstruction following resection of malignant tumor. This technique was needed because of a very narrow canal of the tibia. We split bilateral tibial cortices longitudinally with osteotomies to enlarge tibial canal enough to insert conventional endoprosthesis...
2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28194713/use-of-compressive-osseointegration-endoprostheses-for-massive-bone-loss-from-tumor-and-failed-arthroplasty-a-viable-option-in-the-upper-extremity
#20
Krista A Goulding, Adam Schwartz, Steven J Hattrup, R Lor Randall, Donald Lee, Damian M Rispoli, Daniel M Lerman, Christopher Beauchamp
BACKGROUND: Endoprostheses using principles of compressive osseointegration have shown good survivorship in several studies involving the lower extremity; however, no series to our knowledge have documented the use of this technology in the management of massive bone loss in the upper limb. QUESTIONS/PURPOSES: (1) What proportion of upper extremity implants using compressive osseointegration fixation principles achieved durable short-term fixation, and what were the modes of failure? (2) What surgical complications resulted from reconstruction using this technique? METHODS: A multiinstitutional retrospective review identified nine patients (five women; four men) who underwent 13 endoprosthetic replacements between 2003 and 2014 using compressive osseointegration (Compliant(®) Pre-stress Device [CPS]; Biomet Inc, Warsaw, IN, USA) in the upper extremity, including two proximal humeri, two humeral diaphyses, seven distal humeri, and two proximal ulna...
June 2017: Clinical Orthopaedics and related Research
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