Fracture of the polyethylene tibial post in the posterior-stabilized total knee prosthesis: arthrographic and CT arthrographic diagnosis

Hsu, Yung Ho; Lin, Chu-Chuan; Shu, Ginger; Hsieh, Tsyh-Jyi; Chen, Clement Kuen-Huang

doi:10.1007/s00256-019-03173-5

Cited by 3 publications

(2 citation statements)

References 18 publications

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“…No arthrography or CT arthrography study was performed preoperatively. These studies may have demonstrated the polyethylene wear 21 , though arthrography is, by definition, a minimally invasive procedure not to be undertaken lightly especially in the prosthetic knee where the risk of introducing infection is high. Although standard CT or MRI is currently not used to evaluate polyethylene wear due to artifact 22 , dual energy CT or MR imaging with metallic artifact reduction may have allowed a more indepth assessment of the polyethylene implant though these techniques have not been evaluated in this regard.…”

Section: Discussionmentioning

confidence: 99%

Multi-energy spectral photon-counting computed tomography (MARS) for detection of arthroplasty implant failure

Lau

Lee

Butler

et al. 2021

Sci Rep

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To determine whether state-of-the-art multi-energy spectral photon-counting computed tomography (MARS) can detect knee arthroplasty implant failure not detected by standard pre-operative imaging techniques. A total knee arthroplasty (TKA) removed from a patient was reviewed. The extracted prosthesis [NexGen Legacy Posterior Stabilized (LPS) TKA] was analyzed as were pre-operative imaging examination and compared with a MARS-CT examination obtained of the extracted TKA prosthesis. Radiographs, fluoroscopy, ultrasound and MRI preoperatively did not reveal the cause of the implant failure. MARS CT images of the extracted prosthesis clearly showed the presence of posteromedial polyethylene and tibial tray wear which is compatible with the clinical appearance of the extracted TKA. MARS can identify polyethylene insert and metallic tibial tray wear as a cause of TKA failure, that could not be identified with on standard pre-operative imaging. Although clinical MARS CT system is still under development, this case does illustrate its potential clinical usefulness. This is the first study to document how MARS CT imaging can detect orthopedic implant failure not detected by standard current imaging techniques. This system has a potential clinical application in orthopedic patients.

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Section: Discussionmentioning

confidence: 99%

Multi-energy spectral photon-counting computed tomography (MARS) for detection of arthroplasty implant failure

Lau

Lee

Butler

et al. 2021

Sci Rep

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“…En estos casos, el mecanismo de falla de la fractura del poste de polietileno se originó por el impacto anterior del poste con el componente femoral, con un desgaste excesivo sobre la base de su cara anterior. 7,8 En 2009, Lim y cols. comunicaron un caso similar a los nuestros: una mujer de 72 años con antecedente de accidente cerebrovascular y debilidad muscular que fue sometida a una artroplastia de rodilla con prótesis Scorpio®; a los 14 meses, se produjo la rotura del poste y la presentación clínica con recurvatum.…”

Section: Discussionunclassified

Fractura del poste tibial en la artroplastia total de rodilla estabilizada a posterior. Presentación de dos casos

Pesciallo

Lopreite

Garabano

et al. 2021

Rev. Asoc. Arg. Ort. y Traumatol

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La fractura del poste tibial luego de un reemplazo total de rodilla es una complicación poco frecuente e incapacitante. Presentamos a dos pacientes con fractura del poste tibial no traumática, que acudieron con dolor más inestabilidad en recurvatum, de forma repentina, después de reemplazos articulares con buen funcionamiento previo. El primer paciente se presentó a los 12 años del reemplazo total de rodilla primario y el segundo, a los 14 meses. Ambos tenían el mismo modelo de prótesis estabilizada a posterior. Los dos pacientes fueron sometidos a una revisión con prótesis abisagrada rotatoria (Endo-Model NR®, Waldemar Link, EE.UU.), sin recidiva de la deformidad.Nivel de Evidencia: IV

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Computed Tomography (CT) and CT Arthrography

Pattamapaspong¹,

Peh²

2023

Medical Radiology

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Fracture of the polyethylene tibial post in the posterior-stabilized total knee prosthesis: arthrographic and CT arthrographic diagnosis

Cited by 3 publications

References 18 publications

Multi-energy spectral photon-counting computed tomography (MARS) for detection of arthroplasty implant failure

Multi-energy spectral photon-counting computed tomography (MARS) for detection of arthroplasty implant failure

Fractura del poste tibial en la artroplastia total de rodilla estabilizada a posterior. Presentación de dos casos

Computed Tomography (CT) and CT Arthrography

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