Severe polyethylene wear in uncemented acetabular cup system components

Patel, Jay; Scott, J. E.; Radford, Warwick

doi:10.1016/s0883-5403(99)90090-6

Cited by 24 publications

(9 citation statements)

References 2 publications

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“…The correlation is likely to be design-dependent. Especially inserts that are thin and weak at the rim are prone to be worn through and fractured [14,15]. Apparently, this…”

Section: Discussionmentioning

confidence: 99%

Wear comparison between a dual mobility total hip prosthesis and a typical modular design using a hip joint simulator

Saikko¹,

Shen

2010

Wear

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“…The correlation is likely to be design-dependent. Especially inserts that are thin and weak at the rim are prone to be worn through and fractured [14,15]. Apparently, this…”

Section: Discussionmentioning

confidence: 99%

Wear comparison between a dual mobility total hip prosthesis and a typical modular design using a hip joint simulator

Saikko¹,

Shen

2010

Wear

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“…7,8 Risk factors contributing to catastrophic failure with accelerated wear include increased patient activity, foreign body debris, metallosis, thin polyethylene liner, component malposition, ceramic material, and femoral head size. [9][10][11][12] In the current patient, the failure mode was secondary to plastic failure in the liner and, subsequently, fracture of the acetabular component from biomechanical wear.…”

Section: Discussionmentioning

confidence: 98%

Catastrophic Fracture of a Stable Metal Acetabular Component

Papaliodis¹,

Uhl²,

Fuchs³

2012

Orthopedics

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Various modes of failure of primary and revision total hip arthroplasty have been well documented in the literature over the past 30 years. Concerns over polyethylene wear, osteolysis, and hypersensitivity reactions leading to component loosening and early revision have been evaluated and reported in the literature. Routine follow-up is important to monitor for postoperative issues that might lead to the subsequent need for revision.This article describes a case of a 64-year-old man who initially presented 11 years prior with an intertrochanteric fracture, which failed secondary to varus alignment and femoral head osteonecrosis. The fixation was converted to a total hip replacement using the S-ROM system (DePuy, Warsaw, Indiana). Subsequently, the patient was lost to follow-up after primary total hip arthroplasty and presented with a catastrophic fracture of the metal acetabular cup system. The failure was suggested by clinical presentation and confirmed by imaging studies showing a fractured acetabular shell with femoral head prosthesis resting in the superolateral ileum. The contributing factors that resulted in mechanical failure were polyethylene wear and component fracture. The acetabular component was revised with an in-growth cementless trabecular metal multihole cup (Zimmer, Warsaw, Indiana) with bone grafting of acetabular defects.Routine assessments help educate patients and allow careful monitoring by physicians while establishing a radiographic timeline for the identification, progression, or lack of postoperative complications.

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“…On this, contradictory results persist where positive correlation was reported elsewhere in the literature (Wan et al 2008). The positive relationship between wear and cup inclination may potentially be more dominant in the long-term study when the wear depth into the cup is likely to increase, especially for the liners that are thin and weak at the rim (Patel et al 1999;Puolakka et al 2003). This may potentially affect the contact between the articulating surfaces, and lead to the dislocation and aseptic loosening failure.…”

Section: Introductionmentioning

confidence: 94%

Contact of dual mobility implants: effects of cup wear and inclination

Uddin

2014

Computer Methods in Biomechanics and Biomedical Engineering

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Cup wear and inclination on the pelvic bone are significant factors, which change the contact of the articulating surfaces, thus, impacting the long-term performance of hip implants. This paper presents a finite element (FE) analysis of the contact of the dual mobility implants under the influence of cup wear and inclination. A 3D FE model of the implant was developed with the application of equivalent physiological loading and boundary conditions. Effects of cup inclination angle ranging from 45° to 60° and the wear depth ranging from 0 to 2.46 mm equivalent to up to 30 years of the implant's life on the contact pressure and von Mises stress were investigated. Simulation results show that the contact pressure and von Mises stress decrease significantly with a modest wear depth and remains quite in-sensitive to the cup inclination angle and wear depth up to 1.64 mm. With wear depth further up to 2.46 mm, the cup thickness (i.e. cup thinning on worn region) may be more predominant than increasing of contact area between the cup and the head. The wear on the inner surface of the cup is found to rule out the overall contact pressure and stress in the implant. Furthermore, individual and combined effects of both important parameters are analysed and discussed with respect to available clinical/laboratory studies.

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Severe polyethylene wear in uncemented acetabular cup system components

Cited by 24 publications

References 2 publications

Wear comparison between a dual mobility total hip prosthesis and a typical modular design using a hip joint simulator

Wear comparison between a dual mobility total hip prosthesis and a typical modular design using a hip joint simulator

Catastrophic Fracture of a Stable Metal Acetabular Component

Contact of dual mobility implants: effects of cup wear and inclination

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