Metal on Metal Surface Replacement of the Hip

McMinn, Derek J. W.; Treacy, R. B. C.; Lin, Kyaw; Pynsent, Paul

doi:10.1097/00003086-199608001-00009

Cited by 386 publications

(256 citation statements)

References 5 publications

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“…Few studies appeared to assess the co-morbidity of the patients. Only four published studies, [6][7][8]24,37,42 one industry submission 22 and one unpublished single prosthesis study (Villar R, Cambridge Hip and Knee Unit: personal communication, 2001) had samples that were considered to be homogeneous in terms of disease/diagnosis. The control of bias in study design was generally poor in all studies.…”

Section: Methodsological Quality Of Studiesmentioning

confidence: 99%

“…Of the eight metal-on-metal hip resurfacing arthroplasty studies, [20][21][22]24,37,41,42 (Oswestry Outcome Centre, The Robert Jones and Agnes Hunt Orthopaedic and District Hospital: personal communication, 2001) five gave a clear definition of the study question and outcome 21,22,24,37,42 and six clearly described the procedure. 21,22,24,37,42 The studies were rated poorly in two dimensions: the description of the study sample and the control of bias in the study design.…”

Section: Metal-on-metal Hip Resurfacing Arthroplastymentioning

confidence: 99%

“…21,22,24,37,42 The studies were rated poorly in two dimensions: the description of the study sample and the control of bias in the study design. None of the studies had a control group or controlled adequately for confounding factors.…”

Section: Metal-on-metal Hip Resurfacing Arthroplastymentioning

confidence: 99%

See 2 more Smart Citations

A systematic review of the effectiveness and cost-effectiveness of metal-on-metal hip resurfacing arthroplasty for treatment of hip disease

Vale

Wyness

McCormack

et al. 2002

Health Technol Assess

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Section: Methodsological Quality Of Studiesmentioning

confidence: 99%

Section: Metal-on-metal Hip Resurfacing Arthroplastymentioning

confidence: 99%

See 1 more Smart Citation

A systematic review of the effectiveness and cost-effectiveness of metal-on-metal hip resurfacing arthroplasty for treatment of hip disease

Vale

Wyness

McCormack

et al. 2002

Health Technol Assess

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“…Considering the BHR implant, which has performed well clinically since its introduction in 1997, characteristic adaptations include narrowing of the femoral neck, medial trabecular densification and formation of pedestal lines around the metaphyseal stem (McMinn et al 1996;Pollard et al 2006;Hing et al 2007;Steffen et al 2008). Further changes observed after retrieval include resorption inside the femoral head.…”

Section: Discussionmentioning

confidence: 99%

Activity intensity, assistive devices and joint replacement influence predicted remodelling in the proximal femur

Dickinson

2015

Biomech Model Mechanobiol

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Bone morphology and density changes are commonly observed following joint replacement, and may contribute to the risks of implant loosening and periprosthetic fracture, and reduce the available bone stock for revision surgery. This study was presented in the "Bone and Cartilage Mechanobiology across the scales" WCCM symposium to review the development of remodelling prediction methods and to demonstrate simulation of adaptive bone remodelling around hip replacement femoral components, incorporating intrinsic (prosthesis) and extrinsic (activity and loading) factors.An iterative bone remodelling process was applied to finite element models of a femur implanted with a cementless THR (total hip replacement) and a hip resurfacing implant. Previously developed for a cemented THR implant, this modified process enabled the influence of pre-to postoperative changes in patient activity and joint loading to be evaluated. A control algorithm used identical pre-and postoperative conditions, and the predicted extents and temporal trends of remodelling were measured by generating virtual x-rays and DXA scans.The modified process improved qualitative and quantitative remodelling predictions for both the cementless THR and resurfacing implants, but demonstrated the sensitivity to DXA scan region definition and appropriate implant-bone position and sizing. Predicted remodelling in the intact femur in response to changed activity and loading demonstrated that in this simplified model, although the influence of the extrinsic effects were important, the mechanics of implantation were dominant. This study supports the application of predictive bone remodelling as one element in the range of physical and computational studies, which should be conducted in the pre-clinical evaluation of new prostheses.

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“…Many surgeons believe resurfacing offers potential benefits [5,9,34], including femoral bone conservation [7], avoidance of stress shielding [21], reduced dislocation rates [17,28], and more revision options [16,27], which are of particular interest when treating young patients. However, systemic metal ion elevation [10] and local adverse reactions [23] continue to cause concern.…”

Section: Introductionmentioning

confidence: 99%

What Are the Risks Accompanying the Reduced Wear Benefit of Low-clearance Hip Resurfacing?

Daniel

Ziaee

Kamali

et al. 2012

Clinical Orthopaedics &Amp; Related Research

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Background Clearance is an important determinant of metal-metal bearing function. Tribologic theory and laboratory evidence suggest low clearance (LC) reduces wear but with a potential to increase friction and clinical reports show LC resurfacings have high implant failure rates. Thus, the role of LC is unclear. Questions/Purposes We asked: is in vivo wear as reflected by cobalt (Co) and chromium (Cr) levels reduced in LC bearings, and if so, is this benefit offset by increased friction as assessed by implant-bone interface changes? Methods We retrospectively reviewed 26 patients with LC resurfacings. We assessed Co and Cr levels in blood and urine, hip function, and radiographic adverse features. These data were compared with those from 26 patients with a similar resurfacing but with conventional clearance (CC) from a previous study. Minimum followup was 4.0 years (mean, 4.1 years; range, 4.0-4.7 years).

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Metal on Metal Surface Replacement of the Hip

Cited by 386 publications

References 5 publications

A systematic review of the effectiveness and cost-effectiveness of metal-on-metal hip resurfacing arthroplasty for treatment of hip disease

A systematic review of the effectiveness and cost-effectiveness of metal-on-metal hip resurfacing arthroplasty for treatment of hip disease

Activity intensity, assistive devices and joint replacement influence predicted remodelling in the proximal femur

What Are the Risks Accompanying the Reduced Wear Benefit of Low-clearance Hip Resurfacing?

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