[Effects of Total Hip or Knee Arthroplasty on Median Survival in Patients Aged 80 Years and Older].

Introduction: During the 20th century, the life expectancy increased by 30 years. At the same time, the number of people living longer than that has grown significantly. The aim of this study was to investigate whether total hip or knee arthroplasty (THA or TKA) in patients over 80 years of age does not reduce their life expectancy.

Predicting the development of hemophilic arthropathy in patients with hemophilia based on patient age: a retrospective single-center database study.

Background: Patients with hemophilia (PWH) develop hemophilic arthropathy of the major joints due to recurrent hemarthrosis. This study retrospectively estimated the age at which PWH may expect to develop hemophilic arthropathy and undergo joint replacement surgery.

Research Design And Methods: Using retrospective data from PWH at a Czech orthopedic center, Kaplan Meier analyses were used to estimate the cumulative proportions of patients with hemophilic arthropathy and undergoing joint replacement surgery as a function of age.

A decrease in serum 1,25(OH)D after elective hip replacement and during bone healing is associated with changes in serum iron and plasma FGF23.

Objective: Although calcitriol is essential for bone healing, its serum concentrations are low after hip surgery, and they continue to decline during bone healing. This study aimed to test the hypothesis of an association of changes in calcitriol production with the status of fibroblast growth factor 23 (FGF23) and iron deficiency after elective hip replacement for coxarthrosis.

Methods: In this prospective study, we measured the biomarkers of 17 patients undergoing elective hip replacement on admission, on the first day after surgery, and at the regular check-up after 48 ± 8 days.

Decrease in serum calcitriol (but not free 25-hydroxyvitamin D) concentration in hip fracture healing.

Objective: To assess the decrease in serum calcitriol concentrations after hip fracture.

Methods: Serum concentrations of calcitriol, 25(OH)D, parathyroid hormone (PTH), directly measured free 25(OH)D, and indices of bone formation were measured in elderly patients with hip fracture (HF) and patients with elective hip replacement (EHR) at admission and after 7 weeks.

Results: A total of 45 patients with HF and 17 patients with EHR completed this prospective study.