Debonding of porous coating of a threaded acetabular component: Retrieval analysis

Łapaj, Łukasz; Markuszewski, Jacek; Rybak, T.; Wierusz-Kozłowska, Małgorzata

doi:10.1016/j.jmbbm.2012.08.010

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…However, there are rare cases of porous coating debonding that can complicate revision surgery. In the cases described in the literature, debonding happened much earlier than in our case [2,4]. Biomet Romanus acetabular component has been developed to combine the advantages of threaded and press-fit acetabular cups.…”

Section: Discussionmentioning

confidence: 75%

“…Today there are different materials and types of porous coating in use. There are only two papers published reporting three cases about debonding of porous coating in Biomet Romanus cup, one case 3 years, one 5 years, and one 10 years after implantation [2,4]. In our patient, the total hip endoprosthesis with Biomet Romanus cup was implanted 24 years ago.…”

Section: Introductionmentioning

confidence: 76%

“…A rare complication is debonding of the porous coating of the acetabular component of a total hip endoprosthesis [2][3][4]. Porous coating of uncemented implants are in use to obtain biological fixation and improve longevity of total hip endoprosthesis by allowing bone ingrowth within porous surfaces [5].…”

Section: Introductionmentioning

confidence: 99%

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Revision of Acetabular Component with a Debonded Porous Coating in an Elderly Patient

et al. 2020

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Debonding of the porous coating from the acetabular component of a total hip endoprosthesis is a rare complication. Revision total hip arthroplasty for an unstable acetabular component with a debonded porous coating strongly fixed to the bone can be challenging, especially in elderly patients of poor overall health. In such patients, revision procedures should be as simple and safe as possible. We present our technique of solving that problem in a case of an 82-year-old female with bad general condition and unstable acetabular component of hip endoprosthesis. Because of extremely deficient bone stock, a well-fixed porous coating was left in acetabulum to serve as a “cage“, allowing cemented acetabular component placement. This procedure can reduce the risk of intraoperative bone fracture, blood loss, and duration of surgery, which is important in elderly patients with poor overall health.

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Section: Discussionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 76%

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Revision of Acetabular Component with a Debonded Porous Coating in an Elderly Patient

et al. 2020

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Debonding of Porous Coating: A Late Failure Mode of Uncemented, Partially Threaded Acetabular Components—Retrieval Analysis

Łapaj,

Sulej-Chojnacka,

Rozwalka

et al. 2024

J Therm Spray Tech

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Titanium plasma-sprayed (TPS) porous coatings have been used in total hip arthroplasty for decades. They are considered reliable, and very few failure cases have been described so far. This retrieval study described a series of 20 acetabular components—where total or partial debonding occurred during in vivo use and aimed to explain the underlying failure mechanisms. Implants were examined using optical and electron microscopy (SEM), metallographic sections of retrievals were prepared while pathologic samples of periprosthetic tissues were examined for presence of wear debris. Data from metallographic slides indicated that debonding was initiated at free borders of the coating and tended to progress at the interface between the TPS layer and the shell. In some cases, total debonding occurred leading material wear of both the TPS layer and acetabular shell leading to massive release of metallic debris and accelerated polyethylene wear in third body mechanism. SEM examination demonstrated that splats forming the TPS layer exhibited features suggesting a high temperature gradient between the plasma sprayed layer and the substrate material existed, leading to porosity of splats and suboptimal bonding strength. This study demonstrated that coating application parameters and certain design features (screw holes, fins) may promote long-term failure due to debonding. Surgeons should be aware of this complication as it is most likely underreported, while manufacturers should consider more rigorous pre-clinical testing as suboptimal coating bonding may result in failures during long-term clinical use.

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Laser processing of Ti composite coatings reinforced with hydroxyapatite and bioglass

Chalisgaonkar

Das

Balla

2018

Additive Manufacturing

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Debonding of porous coating of a threaded acetabular component: Retrieval analysis

Cited by 7 publications

References 9 publications

Revision of Acetabular Component with a Debonded Porous Coating in an Elderly Patient

Revision of Acetabular Component with a Debonded Porous Coating in an Elderly Patient

Debonding of Porous Coating: A Late Failure Mode of Uncemented, Partially Threaded Acetabular Components—Retrieval Analysis

Laser processing of Ti composite coatings reinforced with hydroxyapatite and bioglass

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