Comparative study of the wear of UHMWPE with zirconia ceramic and stainless steel femoral heads in artificial hip joints

Derbyshire, Brian; Fisher, John; Dowson, D.; Hardaker, C.; Brummitt, K.

doi:10.1016/1350-4533(94)90042-6

Cited by 130 publications

(67 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The choice of lubricant can significantly affect the results and validity of in-vitro testing (McKellop et al 1992, Cooper et al 1993, Derbyshire et al 1994, Clarke et al 1995, Wang et al 1996, Liao et al 1999). However, laboratories and standards organizations cannot agree as to which lubricant to use for in-vitro testing.…”

Section: Discussionmentioning

confidence: 99%

Wear of ultra-high molecular weight polyethylene and polytetrafluoroethylene in a hip simulator: A dose-response study of protein concentration

Good¹,

Clarke²,

Gustafson³

et al. 2000

Acta Orthopaedica Scandinavica

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Wear of ultra-high molecular weight polyethylene and polytetrafluoroethylene in a hip simulator: A dose-response study of protein concentration

Good¹,

Clarke²,

Gustafson³

et al. 2000

Acta Orthopaedica Scandinavica

View full text Add to dashboard Cite

“…It has been suggested by Derbyshire et al [11] that allowing the component to stabilize unloaded for a period of 48 h also allows for a relaxation of creep of 80+ per cent of possible total recoverable creep. At about 100 h this number is about 90 per cent of possible recoverable creep.…”

Section: Quantification Of Wearmentioning

confidence: 99%

“…If components are allowed to stabilize for a similar period prior to measurement, then the relative contribution of creep can be minimized successfully. Derbyshire et al [11] went on to report that almost 100 per cent of creep takes place in the first 10 6 cycles during simulator tests and that penetration that takes place after this can therefore be regarded as genuine wear with negligible creep.…”

Section: Quantification Of Wearmentioning

confidence: 99%

Improvement in the assessment of wear of total knee replacements using coordinate-measuring machine techniques

Blunt

Bills

Jiang

et al. 2008

Proc Inst Mech Eng H

View full text Add to dashboard Cite

Total joint replacement is one of the most common elective surgical procedures performed worldwide, with an estimate of 1.5610 6 operations performed annually. Currently joint replacements are expected to function for 10-15 years; however, with an increase in life expectancy, and a greater call for knee replacement due to increased activity levels, there is a requirement to improve their function to offer longer-term improved quality of life for patients.Wear analysis of total joint replacements has long been an important means in determining failure mechanisms and improving longevity of these devices. The effectiveness of the coordinate-measuring machine (CMM) technique for assessing volumetric material loss during simulated life testing of a replacement knee joint has been proved previously by the present authors. The purpose of the current work is to present an improvement to this method for situations where no pre-wear data are available.To validate the method, simulator tests were run and gravimetric measurements taken throughout the test, such that the components measured had a known wear value. The implications of the results are then discussed in terms of assessment of joint functionality and development of standardized CMM-based product standards. The method was then expanded to allow assessment of clinically retrieved bearings so as to ascertain a measure of true clinical wear.

show abstract

“…Several laboratory studies suggest an advantage of ceramic over metal heads [6,10,24,29], predicting 22% to 77% reduction of PE wear with Zr femoral heads dependent on the head size [12]. One survey of 19 articles [28] suggests clinical wear studies have not shown a similar advantageous wear profile for Zr heads, but rather are contradictory and report wide variations in magnitude of wear (eg, from less than 0.1 mm/year to greater than 0.5 mm/year).…”

Section: Introductionmentioning

confidence: 99%

Clinical Comparison of Polyethylene Wear with Zirconia or Cobalt-Chromium Femoral Heads

Stilling¹,

Nielsen²,

Søballe³

et al. 2009

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

Ceramic femoral heads were developed to reduce the wear of conventional ultrahigh-molecularweight polyethylene (UHMWPE) bearing surfaces in THA. We compared the wear rates of PE acetabular components bearing against femoral heads of zirconia (Zr) or cobaltchromium (CoCr) in young patients. One surgeon inserted CoCr femoral heads in all 33 patients (33 hips) having THA for primary osteoarthritis from 1996 to 1997 and then Zr femoral heads in all 34 patients (36 hips) from 1998 to 1999. The mean age of the entire cohort was 52.5 years (range, 29-64 years). The shells were solid and hydroxyapatite (HA) -coated, liners were argon-sterilized UHMWPE, and head size was 28 mm. The minimum clinical followup was 56 months (mean, 65 months; range, 56-77 months); minimum 5-year radiographs were available for 62 of the 68 patients. Wear analysis of digitized anteroposterior (AP) radiographs was performed with a computerized method. Demographic data were comparable in the two groups.Mean femoral head penetration rate was similar in the two types of heads (CoCr: 0.25 mm/year; range, 0.21-0.33 mm/ year; Zr: 0.23 mm/year; range, 0.20-0.29 mm/year), as was mean linear wear (CoCr: 1.22 mm; range, 0.28-3.78 mm; Zr: 1.11 mm; range, 0.15-2.05 mm). There were no revisions. These data support skepticism regarding the clinical wear advantage of Zr compared with CoCr femoral heads. The explanation for the clinical similarity of wear, despite the theoretical advantages of ceramic heads, needs further investigation.

show abstract

Comparative study of the wear of UHMWPE with zirconia ceramic and stainless steel femoral heads in artificial hip joints

Cited by 130 publications

References 15 publications

Wear of ultra-high molecular weight polyethylene and polytetrafluoroethylene in a hip simulator: A dose-response study of protein concentration

Wear of ultra-high molecular weight polyethylene and polytetrafluoroethylene in a hip simulator: A dose-response study of protein concentration

Improvement in the assessment of wear of total knee replacements using coordinate-measuring machine techniques

Clinical Comparison of Polyethylene Wear with Zirconia or Cobalt-Chromium Femoral Heads

Contact Info

Product

Resources

About