Life expectancy of osteoarthritic patients after primary total knee arthroplasty

Ishii, Yoshinori; Noguchi, Hideo; Sato, Junko; Ishii, Hana; Takayama, Satoshi; Toyabe, Shin-ichi

doi:10.1016/j.jcot.2017.09.001

Cited by 9 publications

(10 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it was not a large cohort study. 20 Our study resulted in a lower mortality rate of patients after TKA up to a 12-year follow-up period, siding with the first group of studies. One previous study reported that younger patients aged <55 years had higher mortality and older patients aged >70 years had lower mortality rates than the general population up to 28-year follow-up.…”

Section: Discussionsupporting

confidence: 62%

See 1 more Smart Citation

Total knee arthroplasty reduces the risk of mortality in osteoarthritis patients up to 12 years: A Korean national cohort longitudinal follow-up study

Choi

Kwon

Kim

et al. 2020

J Orthop Surg (Hong Kong)

View full text Add to dashboard Cite

Introduction: Mortality rates and causes of death after total knee arthroplasty (TKA) are of great interest to surgeons. However, there is a shortage of studies regarding those of the Asian population. The aim of this study was to compare the mortality rate and causes of death in patients after TKA to the general population. Methods: National sample cohort data from the Korean Health Insurance Review and Assessment Service were used. In this study, 1:4 matched patients after TKA (TKA group: 5072) and general participants (control group: 20,288) were selected as subjects. Their average follow-up duration was 57.2 months ranging from a year up to 12 years. The matches were processed for age, gender, income, region of residence, and past medical history. Mortality rates and causes of death were compared between groups. Regarding the mortality rates, we also performed subgroup analyses according to age. Results: Adjusted hazard ratio (HR) of the TKA group for mortality rate was less than 1 with significance (adjusted HR = 0.61 (95% confidence interval = 0.54–0.70, p < 0.001)). The ratios were less than 1 for both age groups (<70 and ≥70 years), respectively; however, for patients under 70, they were insignificant. Among the 11 major causes of death, the circulatory disease showed the most significantly reduced mortality rate for the TKA group compared to the control group. The neoplasm was the only other cause with a significantly reduced mortality rate for the TKA group. Conclusion: The mortality rate in the TKA group was significantly lower than in the control group up to 12 years after the surgery in Korea. Among the major causes of death, circulatory disease and neoplasm showed a significant reduction in the mortality rate of the TKA group compared with the control group.

show abstract

Section: Discussionsupporting

confidence: 62%

“…There were some long-term studies regarding mortality after TKA, but they were not cohort studies. 20 Since we used data from HIRA, which include data from all citizens of Korea, we did not miss any participants due to follow-up loss. Therefore, the strength of this study lies in the results accurately representing the entire Korean population.…”

Section: Surgerymentioning

confidence: 99%

Total knee arthroplasty reduces the risk of mortality in osteoarthritis patients up to 12 years: A Korean national cohort longitudinal follow-up study

Choi

Kwon

Kim

et al. 2020

J Orthop Surg (Hong Kong)

View full text Add to dashboard Cite

show abstract

“…Therefore, greater volume did not decrease operative time. Considering Naranje et al’s findings, the surgeon’s skill in this study might have plateaued because he had already performed over 300 TKAs 7 years ago [ 26 ]. Therefore, it seems rational that the main reason explaining the shorter operative time over time was not increased surgeon’s skill but rather efficient instrumentation handoffs or delivery between the surgeon and the scrub nurses.…”

Section: Discussionmentioning

confidence: 99%

“…Third, the ratio of males to females was uneven. A female predominance of OA and TKA operations is a common finding of Asian patients [ 12 , 17 , 21 , 22 , 24 , 26 ]. Despite these limitations, the strength of this study was less surgeon-related bias than in previous studies.…”

Section: Discussionmentioning

confidence: 99%

Comparison of Operative Times in Primary Bilateral Total Knee Arthroplasty Performed by a Single Surgeon

Ishii¹,

Noguchi²,

Sato³

et al. 2022

JCM

Self Cite

View full text Add to dashboard Cite

Purpose: Prolonged operative time (OT) is associated with adverse complications after total knee arthroplasty (TKA). The purpose of this study was to determine whether preoperative factors, such as sex, age, body mass index, body weight (BW), body height, American Society of Anesthesiologists grade, tibiofemoral angle, hospital for special surgery scores, surgical side, surgical order, and calendar year of surgery, affect OT. Methods: One hundred and nineteen patients (238 knees) with osteoarthritis who underwent staged bilateral primary TKA performed by a single surgeon were evaluated. The medical records of 15 males and 104 females were retrospectively reviewed. All variables were expressed as median (interquartile range). Results: The OT for all TKAs was 57 min (51, 65). The OT on the left side (59 min (52–67)) was longer than that on the right side (55 min (50–62)) (p = 0.015). Multiple regression analysis revealed that longer OT was related to BW (β = 0.488, p < 0.001), calendar year of surgery (β = −0.218, p< 0.001), and operative side (β = −0.151, p = 0.007). The Jonckheere–Terpstra test showed a trend toward decreasing OT with calendar year on the left side (p = 0.037) (surgeon’s non-dominant side), but not on the right (p = 0.795). Body height, BW, and body mass index showed weak correlations (r = 0.212, p = 0.001; r = 0.352, p < 0.001; r = 0.290, p < 0.001, respectively) with OT. Conclusion: Patients with a large physique, and especially obesity, with an affected knee on the surgeon’s non-dominant side may require a longer OT; OT decreased over time.

show abstract

“…According to recent reports, older age is related to higher mortality rates after total knee arthroplasty (TKA) among patients aged over 75 years [17] and after hip fracture surgery, with mortality rates for these patients observed to be over two times higher among men aged over 80 years than among men aged 65-69 years [18]. Notably, there are only 11 countries with a male life expectancy above 80 years, although this is more common for female life expectancy [1].…”

Section: Introductionmentioning

confidence: 99%

Reference values and correlations for multiple physical performance measures: a prospective cross-sectional study among independently mobile older men in Japan

Ishii

Noguchi

Sato

et al. 2019

Preprint

Self Cite

View full text Add to dashboard Cite

Background: As the most rapidly aging country in the world, Japan is one of few countries with a male life expectancy over 80 years. The gap between the healthy life span and the total life expectancy is large, highlighting the importance of maintaining physical performance (e.g., walking speed, grip strength, and standing balance) in later life, which is also negatively associated with mortality among older adults. The present study aimed to establish reference values for multiple physical performance measures among high-functioning oldest-old Japanese men and to investigate the correlations among these measurements to understand how these variables are related in a more detailed and objective way, compared with previous studies. Methods: This single-center prospective cross-sectional study was conducted from September 2018 to August 2019 with 120 male orthopedic patients in Japan who were able to walk independently. Seven measures of physical performance were assessed: handgrip strength, quadriceps strength, static balance ability (one-legged stance), dynamic balance ability (Functional Reach Test; FRT), walking ability (5-m walking time test), combined movement ability (Timed Up & Go test), and bone quality. Cognitive function was also measured (Mini-Mental State Examination; MMSE). Spearman’s rank correlation was used to evaluate correlations between the variables. Results: Specific reference values are reported for each physical performance measurement explored in this study. Only six participants were classified as cognitively impaired, and 16 had mild cognitive impairment. There were significant correlations of varying levels among all of the measures of physical performance. Age was significantly correlated with all performance measures except FRT, and there was no correlation between age and MMSE. MMSE was weakly correlated with FRT and unrelated to the other performance measures. Conclusions: The reference ranges from this study among a high-functioning cohort of men aged 80 years or older can be used by older men who have not yet reached this age and their health care providers as physical performance targets to facilitate the maintenance of independent mobility in later life. There is an urgent need for the establishment of exercise interventions that will allow these men to achieve the desired targets, potentially lengthening their healthy life span.

show abstract

Life expectancy of osteoarthritic patients after primary total knee arthroplasty

Cited by 9 publications

References 29 publications

Total knee arthroplasty reduces the risk of mortality in osteoarthritis patients up to 12 years: A Korean national cohort longitudinal follow-up study

Total knee arthroplasty reduces the risk of mortality in osteoarthritis patients up to 12 years: A Korean national cohort longitudinal follow-up study

Comparison of Operative Times in Primary Bilateral Total Knee Arthroplasty Performed by a Single Surgeon

Reference values and correlations for multiple physical performance measures: a prospective cross-sectional study among independently mobile older men in Japan

Contact Info

Product

Resources

About