Original articleFailure of the all-polyethylene patellar component after total knee arthroplasty☆
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Cited by (29)
Loading and kinematic profiles for patellofemoral durability testing
2018, Journal of the Mechanical Behavior of Biomedical MaterialsCitation Excerpt :These results are not surprising since patellar maltracking has been previously indicated as one of the main complications of the resurfaced patella (Dennis, 1992). In addition to pain, patellar maltracking can cause larger contact pressures due to the limited contact area, which result in increased wear (Vanbiervliet et al., 2011), and greater shear contact forces, as indicated by the PCA results for Mode 2, which can lead to failure at the peg-button interface (Huang et al., 1999). Looking more closely at the percentage of deformed volume in the two profiles from Mode 2, it is possible to make distinctions between them.
Bearing surface failure in total knee arthroplasty
2012, Seminars in Arthroplasty JSESBilateral Patellar Component Shear Failure of Highly Cross-Linked Polyethylene Components. Report of a Case and Laboratory Analysis of Failure Mechanisms.
2012, Journal of ArthroplastyCitation Excerpt :No cement groove deformation was observed in the clinical retrievals. Patellar component shear failure with fracture of the fixation pegs, as reported here for a bilateral TKA patient with the Natural-Knee II System and Durasul HXPE design, is consistent with a small number of clinical fractures reported in the literature for all-polyethylene patellar components manufactured from conventional UHMWPE [1-5]. The shear fatigue test performed here successfully reproduced the clinical failure mode, with similar fracture patterns on the peg surfaces.
Patella Resurfacing in Total Knee Arthroplasty: The Sum of All Parts
2008, Seminars in Arthroplasty JSESCitation Excerpt :In addition to the backing material, the design of the pegs in the all-polyethylene patellae (one-peg versus three-pegs) has been studied as a possible mode of failure. Fatigue fractures and shearing of the peg as a cause of patella failure has been reported.21,22 However, it remains to be seen which is a more durable design.
Effect of Fuji pressure sensitive film on actual contact characteristics of artificial tibiofemoral joint
2002, Clinical Biomechanics
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No benefits or funds were received in support of this study.