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Rate of Wear in Total Hip Replacement
Clinical Orthopaedics and Related Research, 1975The wear of high molecular weight polyethylene sockets was measured on radiographs, over a period of 9 to 10 years, in a group of patients whose ages averaged 73.3 years at the end of the period. The average rate of wear was 0.15 mm/year and 68 per cent of patients followed this pattern. Wear more than 2.5 mm in 10 years occurred in 15 per cent.
J, Charnley, D K, Halley
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FACTORS PREDICTING COMPLICATION RATES FOLLOWING TOTAL KNEE REPLACEMENT
The Journal of Bone and Joint Surgery-American Volume, 2006The purpose of this investigation was to expand on previous studies by more fully examining the role of a variety of patient and hospital characteristics in determining adverse outcomes following total knee replacement.With use of data from all hospital admissions in California from 1991 through 2001, multiple logistic regression was performed on the ...
Nelson F, SooHoo +3 more
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CAN SELF‐RATING REPLACE DOCTOR'S RATING IN EVALUATING ANTI‐DEPRESSIVE TREATMENT?
Acta Psychiatrica Scandinavica, 1974Sixteen depressive out‐patients with endogenous or mixed endogenous‐psychogenic depression were rated before and during antidepressive drug treatment using the Zung self‐rating scale, the Cronholm‐Ottosson depression scale and a global rating. The scores displayed a parallel course, but the correlations between them were only moderate, and between the ...
L, Arfwidsson +5 more
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Replacement Rates and the Retirement Crisis
SSRN Electronic Journal, 2023In 2014, the annual Social Security Trustees Report removed measures of Social Security replacement rates, which represent Social Security retirement benefits as a percentage of pre-retirement earnings. The Trustees expressed concerns that the Social Security Administration's (SSA) actuaries' methodology produced results that differed meaningfully from
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Stabilization of Wearout ߝ Replacement Rate
IEEE Transactions on Reliability, 1975It is known that a perfectly maintained complex system of identical components, will, after an initial transient period, behave like a Poisson renewal process. In the present paper we present the results of a specific simulation which was carried out to find out how long the transient period lasts.
Doris Lloyd Grosh, Robert Lee Lyon
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Rating systems for total knee replacement
The Knee, 2002The objective assessment of outcome of surgical procedures is assuming increasing significance as the culture of audit and revalidation advances. There is a clear need for surgeons in all fields, but especially in Orthopaedics, to be familiar with the available scoring systems and their relative strengths and weaknesses.
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Trends in Hip Replacement Rates
2009It has been shown that there is international variation in the rates of total hip replacement (THR), partly depending on differences in prevalence and incidence of osteoarthritis but also in part related to the health care systems, the total expenditure on health per capita, the age structure and different indication criteria.
M. Flören +3 more
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Social Security Retirement Income Replacement Rates
Compensation & Benefits Review, 2016One of the main retirement income concerns is adequacy, which is generally measured as the percentage of preretirement income replaced by the retirement benefit. For defined-benefit pension plans the replacement rate or ratio is measured against some measure of final income.
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