The Long-Term Wear of Retrieved McKee-Farrar Metal-on-Metal Total Hip Prostheses

Howie, Donald W.; McCalden, Richard W.; Nawana, Namal S.; Costi, Kerry; Pearcy, Mark J.; Subramanian, C.

doi:10.1016/j.arth.2004.09.028

Cited by 64 publications

(69 citation statements)

References 29 publications

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“…The renewed interest in hip resurfacing follows the introduction of the MoM articulation. This was in part based on the observation that some of the early MoM prostheses have survived for over 20 years, with low wear and no incidence of osteolysis (McKellop et al 1996, Howie et al 2005.…”

Section: Mom Hip Resurfacing Arthroplastymentioning

confidence: 99%

Metal-on-metal hip resurfacing arthroplasty: A review of periprosthetic biological reactions

et al. 2008

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Section: Mom Hip Resurfacing Arthroplastymentioning

confidence: 99%

Metal-on-metal hip resurfacing arthroplasty: A review of periprosthetic biological reactions

et al. 2008

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“…Nevertheless, one MoM retrieval study noted the presence of 100-lm wide scratches. The authors proposed that large CoCr particles had been produced during impingement episodes and these created the large scratches [27].…”

Section: Introductionmentioning

confidence: 99%

“…1), surgical positioning, and effects of ''edge loading'' [12,23,29,38,58,59,76]. Additionally, impingement, subluxation, and dislocation have always been unpredictable risk considerations [3,18,22,24,27,28,31,43,52,66,72,74,77,80]. Aggressive third-body abrasive wear can be one result of THA impingement [10,24,26,27,50].…”

Section: Introductionmentioning

confidence: 99%

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Risk of Impingement and Third-body Abrasion With 28-mm Metal-on-metal Bearings

Clarke

Lazennec

Savisaar

et al. 2013

Clin Orthop Relat Res

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Background Concerns have been raised about the sequelae of metal-on-metal (MoM) bearings in total hip arthroplasty (THA). However, retrieval studies, which offer the best insight into the clinically relevant mechanisms of MoM wear, have followed predictable trends to date such as indicting cobalt-chromium (CoCr) metallurgy, cup design, high conformity between the head and cup, ''steep cups,'' ''microseparation,'' and ''edge wear.'' Questions/purposes We wished to evaluate a set of retrieved 28-mm MoM THA for signs of (1) cup-to-stem impingement; (2) normal wear pattern and concomitant stripe damage on femoral heads that would signify adverse wear mechanics; and (3) well-defined evidence of thirdbody scratches on bearings that would indicate large abrasive particles had circulated the joint space. Methods Ten 28-mm MOM retrievals were selected on the basis that femoral stems were included. Revision surgeries at 3 to 8 years were for pain, osteolysis, and cup loosening. CoCr stems and the MoM bearings were produced by one vendor and Ti6Al4V stems by a second vendor. All but two cases had been fixed with bone cement. We looked for patterns of normal wear and impingement signs on femoral necks and cup rims. We looked for adverse wear defined as stripe damage that was visually apparent on each bearing. Wear patterns were examined microscopically to determine the nature of abrasions and signs of metal transfer. Graphical models recreated femoral neck and cup designs to precisely correlate impingement sites on femoral necks to cup positions and head stripe patterns.

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“…Despite this, hip resurfacing as an alternative to conventional THA does offer a number of advantages: preservation of the metaphyseal and diaphyseal femoral bone; improved radiographic biomechanical parameters of the hip e.g. femoral offset [16,45]; larger femoral head sizes reducing the risk of dislocation [9]; and improved wear properties of the metal-on-metal bearing surfaces [23,36].…”

Section: Introductionmentioning

confidence: 99%

What is the Midterm Survivorship and Function After Hip Resurfacing?

Rahman¹,

Muirhead-Allwood²,

Alkinj³

2010

Clinical Orthopaedics &Amp; Related Research

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Background Hip resurfacing arthroplasty is a common procedure that improves functional scores and has a reported survivorship between 95% and 98% at 5 years. However, most studies are reported from the pioneering rather than independent centers or have relatively small patient numbers or less than five years followup. Various factors have been implicated in early failure. Questions/purposes Our purposes were to determine: (1) the midterm survival of the BHR; (2) the function in patients treated with hip resurfacing; and (3) whether age, gender, BMI, or size of components related to failure. Methods We reviewed the first 302 patients (329 hips) on whom we performed resurfacing arthroplasty. We assessed the survivorship, change in functional hip scores (HHS, OHS, WOMAC, UCLA), and analyzed potential risk factors (age, gender, BMI, component size) for failure. The mean age at the time of surgery was 56.0 years (range, 28.2-75.5 years). The minimum followup was 5 years (mean, 6.6 years; range, 5-9.2 years).Results Kaplan-Meier analysis showed survival of 96.5% (95% CI, 94.7-98.4) at 9 years taking revision

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The Long-Term Wear of Retrieved McKee-Farrar Metal-on-Metal Total Hip Prostheses

Cited by 64 publications

References 29 publications

Metal-on-metal hip resurfacing arthroplasty: A review of periprosthetic biological reactions

Metal-on-metal hip resurfacing arthroplasty: A review of periprosthetic biological reactions

Risk of Impingement and Third-body Abrasion With 28-mm Metal-on-metal Bearings

What is the Midterm Survivorship and Function After Hip Resurfacing?

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