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Custom-made intercalary endoprosthetic reconstruction for a ..

Components of the custom-madeintercalary femoral diaphyseal endoprosthesis.

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made intercalary endoprosthesis

The reconstruction of large segmental defects after the resection of malignant bone tumors is usually done with modular or custom-made endoprostheses, so far, they appear to work well. From the experience with other indications for endoprostheses it must be admitted that failures will be a matter of time only. With the improved prognosis for patients with primary malignant bone tumors with regard to relapse-free survival and increased chances for permanent cure, the trend for reconstruction procedures should be directed to more 'biological' techniques. The reconstruction of osseous and osteocartilaginous defects with massive allografts is somewhere between the use of autologous bone and artificial replacement. From the experience with 14 allograft reconstructions in primary malignant bone tumors (osteosarcoma, malignant fibrous histiocytoma, leiomyosarcoma, chondrosarcoma, lymphoma) or other aggressive lesions (aneurysmal bone cyst, recurring giant-cell tumor, solitary metastasis) of the humerus (one osteoligamentous graft in combination with an endoprosthesis, one intercalary graft), the femur (three intercalary grafts, two osteoarticular distal femurs, one combination with an endoprosthesis), and the proximal tibia (four osteocartilaginous, two intercalary grafts) in patients aged 10 to 64 years, we feel that this type of reconstruction allows for a reconstruction without sacrificing more bone and soft tissue than needed for the surgical margins. Fusion between the patient's bone and the allograft has been seen after 6 to 18 months. From this small series it is concluded that using allografts might allow for the preservation of joint structures that need to be resected for the implantation of an endoprosthesis, increasing the possibilities for salvage procedures.(ABSTRACT TRUNCATED AT 250 WORDS)

Salvage of multiply failed intercalary allograft with conversion to intercalary endoprosthesis

N2 - The reconstruction of large segmental defects after the resection of malignant bone tumors is usually done with modular or custom-made endoprostheses, so far, they appear to work well. From the experience with other indications for endoprostheses it must be admitted that failures will be a matter of time only. With the improved prognosis for patients with primary malignant bone tumors with regard to relapse-free survival and increased chances for permanent cure, the trend for reconstruction procedures should be directed to more 'biological' techniques. The reconstruction of osseous and osteocartilaginous defects with massive allografts is somewhere between the use of autologous bone and artificial replacement. From the experience with 14 allograft reconstructions in primary malignant bone tumors (osteosarcoma, malignant fibrous histiocytoma, leiomyosarcoma, chondrosarcoma, lymphoma) or other aggressive lesions (aneurysmal bone cyst, recurring giant-cell tumor, solitary metastasis) of the humerus (one osteoligamentous graft in combination with an endoprosthesis, one intercalary graft), the femur (three intercalary grafts, two osteoarticular distal femurs, one combination with an endoprosthesis), and the proximal tibia (four osteocartilaginous, two intercalary grafts) in patients aged 10 to 64 years, we feel that this type of reconstruction allows for a reconstruction without sacrificing more bone and soft tissue than needed for the surgical margins. Fusion between the patient's bone and the allograft has been seen after 6 to 18 months. From this small series it is concluded that using allografts might allow for the preservation of joint structures that need to be resected for the implantation of an endoprosthesis, increasing the possibilities for salvage procedures.(ABSTRACT TRUNCATED AT 250 WORDS)

Intercalary diaphyseal endoprosthetic reconstruction for ..

Custom-made intercalary endoprosthetic reconstruction for a parosteal ..

Ahlmann ER and Menendez LR: Intercalaryendoprosthetic reconstruction for diaphyseal bone tumours. J BoneJoint Surg Br. 88:1487–1491. 2006. : :

The femoral diaphyseal location in the present POScase is uncommon, within an already extremely rare tumor entity. Anintercalary custom-made endoprosthesis was used to reconstruct thedamaged bone following tumor resection. No early complications,local recurrence and distant metastasis were observed, and the MSTSscore was 28/30 (93.3%) at the 28-month post-surgery follow-up. Thepresent authors have described herein the clinical, radiological,and pathological characteristics of POS and have discussed itssurgical management.

intercalary diaphyseal endoprosthesis ..

and the damaged bone was reconstructed with a custom-made intercalary endoprosthesis.

A long diaphyseal segment of the femur containing the tumor was resected along with a healthy margin of soft tissues, and the damaged bone was reconstructed with a custom‑made intercalary endoprosthesis.

A long diaphyseal segment of the femur containing the tumor was resected along with a healthy margin of soft tissues, and the damaged bone was reconstructed with a custom-made intercalary endoprosthesis.

and the damaged bone was reconstructed with a custom‑made intercalary endoprosthesis.
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  • Intercalary Allograft | Dental Implant | Prosthesis

    Outcomes of a Modular Intercalary Endoprosthesis as Treatment for Segmental Defects of the Femur, Tibia, and Humerus

  • Surgery & Surgical Specialties

    Radial Shaft Reconstruction With an Intercalary Endoprosthesis Following Resection of Metastatic Tumor

  • proximal humeral endoprosthesis.

    Radial Shaft Reconstruction With an Intercalary Endoprosthesis Following Resection of …

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Read papers from the keyword Tumor endoprosthesis with Read by QxMD.

Wide resection of POS is recommended to preventlocal recurrence and the rate of distant metastasis; however, theoptimal technique for long bone diaphyseal reconstruction followingtumor resection is undecided. There are a number of techniquesavailable for femoral reconstruction of diaphyseal defectsfollowing excision of bone tumors. These include the use ofautogenous vascularized fibular grafts (,),segmental allografts (–), autogenous extracorporeally irradiatedbone (,), distraction osteogenesis (,) andcustom-made intercalary endoprostheses (–).

Endoprosthesis still remains the ..

AB - The reconstruction of large segmental defects after the resection of malignant bone tumors is usually done with modular or custom-made endoprostheses, so far, they appear to work well. From the experience with other indications for endoprostheses it must be admitted that failures will be a matter of time only. With the improved prognosis for patients with primary malignant bone tumors with regard to relapse-free survival and increased chances for permanent cure, the trend for reconstruction procedures should be directed to more 'biological' techniques. The reconstruction of osseous and osteocartilaginous defects with massive allografts is somewhere between the use of autologous bone and artificial replacement. From the experience with 14 allograft reconstructions in primary malignant bone tumors (osteosarcoma, malignant fibrous histiocytoma, leiomyosarcoma, chondrosarcoma, lymphoma) or other aggressive lesions (aneurysmal bone cyst, recurring giant-cell tumor, solitary metastasis) of the humerus (one osteoligamentous graft in combination with an endoprosthesis, one intercalary graft), the femur (three intercalary grafts, two osteoarticular distal femurs, one combination with an endoprosthesis), and the proximal tibia (four osteocartilaginous, two intercalary grafts) in patients aged 10 to 64 years, we feel that this type of reconstruction allows for a reconstruction without sacrificing more bone and soft tissue than needed for the surgical margins. Fusion between the patient's bone and the allograft has been seen after 6 to 18 months. From this small series it is concluded that using allografts might allow for the preservation of joint structures that need to be resected for the implantation of an endoprosthesis, increasing the possibilities for salvage procedures.(ABSTRACT TRUNCATED AT 250 WORDS)

Journal of Bone & Soft Tissue Tumors

The present case report describes the clinical,radiological and pathologic features of a 44-year old patientdiagnosed with POS localized in the diaphysis of the left femur. Acustom-made intercalary endoprosthesis was used to achieveanatomical and functional reconstruction for a 16 cm bone defectfollowing en bloc tumor resection. Written informed consent wasobtained from the patient and the Ethical Review Board of ShanghaiTenth People's Hospital, Tongji University School of Medicine(Shanghai, China) approved the experimental procedures.

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