[Application of guidelines for secondary prevention of fracture and the FRAX index in patients with fragility fracture]

Changing trends in the epidemiology of hip fracture in Spain

Temporal trends in hip fracture incidence have recently been reported in some developed countries. Such data in Spain has previously been incomplete; this study reports the stratified incidence of hip fractures in people over 65 in Spain during the last 14 years.

INTRODUCTION

The main objective is to establish whether temporal trends in hip fracture incidence in Spain exist.

METHODS

Ecological study with data from hospital discharges nationwide. The study includes patients aged ≥ 65 years during a 14-year period (1997-2010). The analysis compares two periods of four years: 1997-2000 (P1) and 2007-2010 (P2).

RESULTS

There were 119,857 fractures in men and 415,421 in women. Comparing periods (P1 vs P2) over 10 years, the crude incidence rate/100,000 inhabitant/year increased an average of 2.3%/year in men and 1.4% in women. After adjustment, the rate increased an average of 0.4%/year in men (p < 0.0001), but decreased 0.2%/year in women (p < 0.0001). In men, younger than 85, the decrease was not significant except in 70-74 years, and from 80 years, the adjusted rate increases significantly (p < 0.0001). In women under 80 years of age, the decrease in adjusted rate was significant; there was no change in 80-84 years, and the adjusted rate increased significantly in individuals 85 years and older (p < 0.0001). Mortality rates declined by 22% in both sexes, and the index of overaging population rises 30.1 % in men and 25.2% in women.

CONCLUSIONS

This study supports other international studies by showing changes in the incidence of hip fractures after age-population adjustment, which denotes a decrease in the younger age groups and among women and shows an increase in both groups over 85 years. The increase in the crude incidence rate of hip fracture in Spain reflects changes in population structure.

Management of osteoporosis in primary care before and after the result of densitometry: treatments in real practice versus the recommended by guidelines. CANAL study

OBJECTIVES

To analyze the requirements for osteoporosis (OP) treatment of primary care physicians (PCP), before and after knowing the result of a bone densitometry (DXA).

MATERIAL AND METHODS

We studied 50 years older women from two Spanish health areas (Canary Islands and Alicante). The FRAX risk factors were collected and we reviewed the requirements for OP treatment before DXA and in the subsequent months (bisphosphonates, strontium, raloxifene/bazedoxifene, estrogens, parathyroid hormone). To evaluate the appropriateness of treatment we used published guidelines. A high risk for hip fracture was considered if FRAX ≥ 3% or the patient had a history of fragility fracture

RESULTS

We included 339 women (mean age: 63 years). Before DXA, 14% of Canarias and 58% of Alicante were receiving treatment. Thirty seven percent of treated patients and 26% of the untreated patients had a high fracture risk before DXA. The average FRAX for a high risk of fracture and hip fracture was 5.6% and 2%, respectively. After DXA, the percentage of treated patients rose from 35 to 39%: increasing from 14 to 28% in the Canary Islands and decreasing from 58 to 51% in Alicante. Overall, treatment was received by 64% of patients with OP, 38% of patients with osteopenia and 15% of those with normal DXA. When the OP treatment guidelines were applied, we found that 7% needed treatment according to the most restrictive guidelines and 43% according to the most flexible guidelines.

CONCLUSIONS

There is great variability in treatment for OP prescribed before after DXA between GP. A broad consensus guideline between different specialties is required to optimize clinical practice.

Validation of the FRAX predictive model for major osteoporotic fracture in a historical cohort of Spanish women

FRAX is a fracture risk assessment tool to estimate the 10-yr probability of a major osteoporotic fracture or a hip fracture. The aim of the study was to assess the predictive ability of FRAX for major osteoporotic fracture in a cohort of Spanish women. The study was based on a retrospective cohort of women aged 40-90 yr. Patients were followed from their first bone densitometry to the first major osteoporotic fracture event (forearm, proximal humerus, clinical spine, or hip fracture) or for 10 yr whichever comes first. A total of 1231 women were included. Bone mineral density data and self-reported data on risk factors for fracture were obtained. The predictive ability of FRAX was assessed by analyzing calibration and discrimination, with the calculation of observed-to-expected (O/E) fracture ratios and the receiver operating characteristic (ROC) curve, respectively. A total of 222 women (18.1%) reported at least 1 fracture after the first assessment. The incidence of fracture was 14 (95% confidence interval [CI]: 10-17), 19 (95% CI: 15-23), 28 (95% CI: 21-36), and 67 (95% CI: 8-125) cases per 1000 woman-years in women aged <55, 55-64, 65-74, and ≥75 yr, respectively. The O/E ratio was 3.9 (95% CI: 3.4-4.5; p<0.0001). The area under the ROC curve was 61% (95% CI: 57-65%). FRAX underestimated the risk of major osteoporotic fracture in this cohort of Spanish women, particularly in those with a low risk of fracture according to the clinical factors used in the FRAX tool. Our findings highlight the need for validation studies of FRAX in Spain.