Long-Term Performance of Ceramic and Metal Femoral Heads on Conventional Polyethylene in Young and Active Patients

Meftah, Morteza; Klingenstein, Gregory G.; Yun, Richard J; Ranawat, Amar S.; Ranawat, Chitranjan S.

doi:10.2106/jbjs.l.00432

Cited by 67 publications

(41 citation statements)

References 31 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…29 A recent report of ceramic versus cobalt chrome articulating femoral heads found the wear rate to be significantly different between the two groups in young patients (0.09 mm/yr for CoP vs. 0.14 mm/yr for MoP), while the rate of osteolysis was very similar for each group. 4 …”

Section: Discussionmentioning

confidence: 99%

“…3,4 The expected increased frequency of THA in the US in an environment of more limited health care funds further necessitates the need to evaluate the value of different bearing surfaces relative to associated cost and any improved patient focused clinical outcome.…”

Section: Introductionmentioning

confidence: 99%

“…4 Subsequent manufacturing techniques produced the current ceramic material (Biolox®, Ceramtec, Plochingen, Germany) which has diminished the fracture problems in the earlier alumina ceramic heads while improving wear rates. 5,6 Metal on metal hip bearing surfaces (Metasul®, Zimmer, Warsaw IN, USA) with and without polyethylene backing of the cup metal liner have been used with varying reports of success and failure over the past three decades.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Clinical outcomes assessment of three similar hip arthroplasty bearing surfaces

2014

Orthop Rev

View full text Add to dashboard Cite

This report examines the clinical performance of three very similar total hip arthroplasty designs with distinctly different bearing surfaces used over the course 10-17 years. Clinical outcomes assessments for each group are compared in the context of varying implant related costs related to the latest technology at the time of surgery. Eighty-one surgeries were studied and differ by bearing surface. In this study, 36 hips are ceramic on polyethylene, 27 are metal on polyethylene and 18 are metal on metal. All polyethylene components are nonhighly cross-linked. The ceramic on polyethylene group has younger patients, on average, and higher percentage of patients with significant polyethylene wear. These groups have an average follow-up time of 8.6 years when assessing functional hip scores, thigh pain, groin pain, revision surgeries and radiographic osteolysis. The implant purchasing cost at the time of surgery was assessed to determine if a correlation exists between outcomes and the more technologically advanced implants use at the time of surgery. Based on midterm clinical outcome assessment, no correlation between initial hospital cost and clinical outcomes of one bearing surface over another can be found.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Clinical outcomes assessment of three similar hip arthroplasty bearing surfaces

2014

Orthop Rev

View full text Add to dashboard Cite

show abstract

“…Laboratory studies [15,23,61] and clinical studies [15,20,22,62] showing a wear rate improvement conflict with other clinical reports [63][64][65] suggesting no apparent difference. Recently, a matched pair analysis was reported comparing 28 mm ceramic heads with the same size metal heads [66], bearing on conventional UHMWPE and found a significant reduction in wear rate at an average of 17 years post implantation, when ceramic heads were used.…”

Section: Open Accessmentioning

confidence: 99%

Evaluation of Two Total Hip Bearing Materials for Resistance to Wear Using a Hip Simulator

John

2015

Lubricants

View full text Add to dashboard Cite

Electron beam crosslinked ultra high molecular weight polyethylene (UHMWPE) 32 mm cups with cobalt alloy femoral heads were compared with gamma-irradiation sterilized 26 mm cups and zirconia ceramic heads in a hip wear simulator. The testing was performed for a total of ten million cycles with frequent stops for cleaning and measurement of mass losses due to wear. The results showed that the ceramic on UHMWPE bearing design exhibited higher early wear than the metal on highly crosslinked samples. Once a steady state wear rate was reached, the wear rates of the two types of hip bearing systems were similar with the ceramic on UHMPWE samples continuing to show a slightly higher rate of wear than the highly crosslinked samples. The wear rates of each of the tested systems appear to be consistent with the expectations for low rates of wear in improved hip replacement systems.

show abstract

“…the term "young patient" can mean active patients under 65 years (Meftah et al 2013) but it was also used for a series of patients with a mean age of 25 years (Kumar et al 1998). in the first age group, most patients will suffer from primary osteoarthritis since in the latter, practically all patients will suffer from an underlying disease.…”

Section: Introductionmentioning

confidence: 99%