Cases reported "Prosthesis Failure"

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1/207. A rotating-hinge knee replacement for malignant tumors of the femur and tibia.

    We evaluated the 2- to 7-year results of a rotating-hinge knee replacement after excision of malignant tumors of the knee joint. There were 25 distal femoral and 7 proximal tibial replacements. The 5-year prosthetic survival for distal femoral replacements was 88%, compared with 58% for proximal tibial replacements. Seven patients underwent prosthetic exchange: 1 for aseptic loosening, 2 for wound slough and perioperative infection, and 4 for articulating component failure. One patient underwent above-knee amputation owing to skin necrosis. The median functional scores at the latest follow-up were 27 by the International Society of limb salvage evaluation system and 80 by the Hospital for Special Surgery Knee Score system. This implant is a promising choice for joint reconstruction after excision of tumors at the knee joint.
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keywords = operative
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2/207. Revision hip arthroplasty in patients with a history of previous malignancy.

    BACKGROUND AND OBJECTIVES: The potential association between implants and malignancy has been discussed in the literature, but never as a cause of loosening of joint arthroplasty. methods: The records of all patients who underwent revision arthroplasty at our institution between 1992 and 1995 were reviewed. RESULTS: Among 93 patients who underwent revision hip arthroplasties, 11 (11.8%) had a history of previous malignancy. At surgery, in 2 of these patients, metastasis was found to be the cause of loosening in the affected hip. CONCLUSIONS: When revision hip arthroplasty is considered, patients with a history of malignancy require attenuated pre-, intra-, and postoperative workup. Management algorithm in such cases is proposed.
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keywords = operative
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3/207. Abdominal pulsatile tumor after endovascular abdominal aortic aneurysm repair.

    A 70 years old patient was successfully treated for infrarenal aortic aneurysm by an endovascular bifurcated prosthesis. Three months later, because of dysuria, he underwent urological examination revealing an abdominal pulsatile tumor. Thereafter, the patient was sent to our emergency ward with suspected symptomatical endoleak. Radiological screening by computer tomography and magnetic resonance angiography showed good post-operative results without endoleak. Patient was treated with antispasmodic medication and is doing well today. Because endovascular repair of aortic aneurysm, in contrast to an open approach, does not eliminate the aneurysm itself, post-operative abdominal palpation can be ambiguous. magnetic resonance angiography--without the need of nephrotoxic contrast medium--compares favourably to CT and provides excellent pictures with less artefacts for post-operative screening of endoleak. If reperfusion can be excluded, pulsation is due to the transmission of the blood-pressure wave to the thrombosed aneurysm.
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ranking = 3
keywords = operative
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4/207. Conservative management of a methicillin-resistant staphylococcus aureus (MRSA)-infected aortobifemoral graft: report of a case.

    A 63-year-old man was referred to our department for treatment of intermittent claudication in the right lower limb. The preoperative angiogram showed severe stenosis extending from the terminal aorta to the bilateral common femoral arteries, with occlusion of the right superficial femoral artery and the left popliteal artery. He underwent aortobifemoral bypass with thromboendarterectomy of the left common femoral artery, and right graft-popliteal artery bypass. The patient had an uneventful postoperative course; however, 14 days after the operation, a pulsatile mass suddenly appeared in the left groin. Emergency surgery revealed disruption of the left distal anastomosis of the aortobifemoral bypass and therefore, revision, in the form of graft-profunda femoris artery interposition with graft-superficial femoral artery bypass, was performed. Microscopic examination showed colonies of bacteria in the host artery adventitia adjacent to the anastomosis. culture of the discharge from the right groin operative scar revealed methicillin-resistant staphylococcus aureus (MRSA). The discharge resolved following the intravenous administration of vancomycin and the local application of vancomycin ointment. There were no operative complications other than the MRSA infection, and the patient was discharged 20 days after revision surgery. In the 14 months since the revision, all grafts have remained patent and there have been no further symptoms of graft infection.
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ranking = 4
keywords = operative
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5/207. Right lateral transthoracic approach mimicking standard transesophageal echocardiographic views in a patient with giant left atrium.

    We describe the case of a patient with long-standing severe mitral periprosthetic regurgitation and a giant left atrium. The patient was referred for surgery. On the third postoperative day, after resuture of the dehiscence of the valve sewing ring, the patient complained of dyspnea. Transthoracic ultrasound examination was performed to eliminate pleural effusion. The severe right lateral displacement of an aneurysmatic left atrial cavity contacting with the thoracic wall allowed us to obtain excellent images of the posterior cardiac anatomy by a right lateral thoracic view. The new transthoracic approach made it possible to safely assess the atrial side of the mitral prosthesis, eliminating mitral regurgitation after surgery without transesophageal echocardiographic examination.
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keywords = operative
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6/207. A case of dislodged atrial screw-in lead with migration to the ventricle 1 year postoperatively.

    We report a rare case of a 53-year-old woman with a dislodged atrial screw-in lead that migrated to the ventricle 1 year after pacemaker implantation. While such an event is quite unusual, we should be aware of its possibility.
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ranking = 4
keywords = operative
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7/207. Initial experience with processed human cadaveric allograft skin for reconstruction of the corpus cavernosum in repair of distal extrusion of a penile prosthesis.

    We describe our initial experience with the novel application of processed human cadaveric allograft skin in reconstruction of a damaged corpus cavernosum associated with distal extrusion of a penile prosthesis. The material was evaluated for ease of reconstruction, adequacy of repair, and outcome. Human processed dermis allograft requires no intraoperative harvesting, is technically easy to fashion, and offers adequate tensile strength in the reconstruction of damaged corpora cavernosa. This initial experience with processed human cadaveric dermis in reconstruction of damaged corpora cavernosa is encouraging. Further evaluation to define the long-term efficacy and scope of application of this material in urologic reconstructive procedures is warranted.
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ranking = 1
keywords = operative
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8/207. Dynamic obstruction, an unusual complication after aortic valve replacement with a stentless porcine valve.

    In the early nineties, the stentless porcine aortic bioprosthesis has been reintroduced successfully. Because of the limited experience, knowledge of clinical complications is limited. Therefore, we describe an unusual complication of dynamic obstruction after aortic valve replacement with a stentless porcine valve in a 70 year old man 18 months after implantation. We discuss the complications of stentless aortic prostheses known so far, describe operative techniques used and their characteristic two dimensional echocardiographic images.
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keywords = operative
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9/207. Video-assisted tricuspid valve surgery: a new surgical option in endocarditis on pacemaker.

    A patient presenting with a pacemaker lead infection and tricuspid regurgitation underwent a minimally invasive video-assisted tricuspid valve replacement. The valve was approached through a right anterior mini thoracotomy. Under thoracoscopic vision and peripheral cardiopulmonary bypass, a catheter was placed on the ascending aorta for antegrade cardioplegia delivery. A transthoracic aortic cross-clamp was introduced through the third right intercostal space. tricuspid valve replacement added to the pacemaker leads ablation was exclusively performed under thoracoscopic vision, providing an excellent video-image in this reduced operative field. After 22 months of follow up, the patient is asymptomatic, the echocardiography showing a normally functioning valve.
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ranking = 1
keywords = operative
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10/207. Late aneurysm formation in a femoro-popliteal polytetrafluoroethylene graft.

    Since improvement in the material, true aneurysms and pseudoaneurysm formations have become relatively rare complications after femoro-popliteal reconstruction with polytetrafluoroethylene (PTFE) grafts. We report a case of late graft rupture and pseudoaneurysm formation within the straight femoral part of a femoro-popliteal bypass with reinforced (PTFE-wrapped) Gore-Tex graft. The rupture occurred 7 years after implantation without history of direct traumatization. Intraoperatively the whole bypass showed macro- and microscopically visible deterioration of the wall with almost complete disruption at the site of the aneurysm. The graft had to be replaced completely. In conclusion, we recommend continuous long-term follow-up of these patients preferably with duplex ultrasonography.
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ranking = 1
keywords = operative
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