The Functional Outcomes of Total Knee Arthroplasty

Abstract

Total knee arthroplasty is a generally effective procedure, but the current English-language literature does not support specific recommendations about which patients are most likely to benefit from it.

Primary modular total knee replacement in severe and unstable osteoarthritis. Predictive factors for failure

“…While 13.5 % had diabetes mellitus, 19.3 % were morbidly obese (BMI>40). These percentages are similar to published series by Kane et al [21], Robinson [22], Thelu et al [24], Abbas and Gunn [25] and Nakama et al [26]. Assessing surgical risk, using the ASA classification, 47.8 % of patients were classified as ASA III and ASA IV, similar to the García-Crespo et al [23] series published using this scale.…”

“…We did not find positive predictive factors that are comparable to many authors like Lachiewicz and Fatalyn [12], Kane et al [21], Robinson [22], Amin et al [30] and Benjamin et al [31]. However, some authors like Kerkhoffs et al [32], Dowsey et al [33] and Jäarvenpää et al [34] published association between poorer functional outcomes and bigger infection rate in obese patients]; in our study BMI was not a survival or result predictor.…”

“…In relation to the demographic characteristics of our study population, the average ages of our groups are somewhat higher than primary knee arthroplasty studies reported by Vasso et al [10], Deshmukh et al [11], Lachiewicz and Fatalyn [12], Anderson et al [13], Asif and Choon [18], Kane et al [21], Robinson [22], García-Crespo et al [21], Thelu et al [24], Abbas and Gunn [25] and Nakama et al [26] in the literature. Our patients had average ages of 70.5 years and nearly 61 % were older than 65 years.…”

Elongation of the collateral ligaments after cruciate retaining total knee arthroplasty and the maximum flexion of the knee

“…Although excellent long-term survivorship and pain relief have been reported (Kane et al, 2005;Roberts et al, 2007;Robertsson et al, 2000), achieving deep flexion beyond 1201 remains a challenge after TKA surgeries (Dennis et al, 2007). While various factors have been reported to affect the flexion of the TKA knees (Ritter et al, 2003), preventing soft tissue over-stretching (such as the MCL and LCL), an intraoperative variable, has been widely recognized as an important factor to affect post-operative function of the knee (Ahmed et al, 2009;Ritter et al, 2003).…”

A Guide to Understanding Meta-analysis

“…These concepts are discussed below and summarized in TABLE 1. EFFECT SIZE S tudies included in a meta-analysis must have common outcome statistics that allow their results to be combined. 31 Effect sizes, which reflect the magnitude and direction of the treatment effect for each study, serve this purpose. When all the studies to be included in a meta-analysis have the same outcome measure, an effect size in the original units may be calculated.…”