Outcomes in nonagenarians after hemiarthroplasty for femoral neck fracture. A prospective matched cohort study

Outcomes of ultra-old vs old patients after hip fracture surgery: a matched cohort analysis of 1524 patients

BACKGROUND

Surgical management of geriatric hip fractures yields improved functional outcomes with decreased morbidity and mortality. Cohort studies have suggested that the older patients within the geriatric age group have worse outcomes with surgery, However, these studies inherently report inflated risks due to poor handling of confounders and have inadequately age-stratified their geriatric population.

AIM

This study aims to investigate the effect of age alone on the 1-year mortality and functional status of geriatric patients after hip fracture surgery.

METHODS

This is a retrospective single institution cohort study based on the prospectively-maintained registry of hip fracture patients. 2603 patients aged 60 years and above were treated surgically under a geriatric-orthopaedic hip fracture pathway from January 2014 to December 2018. Patients were split into two age groups: ultra-old (≥ 85 years) vs old (< 85 years). Baseline demographics and the ASA (American Society of Anaesthesiologists) status and the Modified Barthel's Index (MBI) were obtained at admission and 1 year after the fracture. Adverse outcomes from the fracture and surgery were recorded during a follow-up period of minimally 2 years. A 2:1 matching process based on the gender, fracture type, ASA status, CCI and MBI categories was conducted.

RESULTS

There were 1009 and 515 patients in the old and ultra-old age groups, respectively. 1-year mortality was similar for both age groups (4.0% ultra-old vs 3.6% old, p = 0.703). 30-day morbidity was similar except for higher rates of postoperative pneumonia in the ultra-old (14.0 vs 6.3%, p < 0.001). MBI scores at 1-year were lower in the ultra-old (severe dependence: 16.4 vs 10.0%; p = 0.001). Ultra-old patients were less likely to be community ambulant at 12 months (21.2 vs 36.0%) with the deterioration in ambulatory status significant after correction for baseline status (p < 0.001).

CONCLUSION

The 1-year mortality of surgically-managed geriatric hip fracture patients older than 85 years of age is not determined by age alone. Patients aged 85 years and above are at higher risk for pneumonia postoperatively. Ultra-old hip fracture patients with an intertrochanteric fracture are more likely to have poorer function at 1 year after hip fracture surgery.

What Predicts Health-Related Quality of Life for Patients With Displaced Femoral Neck Fractures Managed With Arthroplasty? A Secondary Analysis of the HEALTH Trial

BACKGROUND

Total hip arthroplasty (THA) has been argued to improve health-related quality of life (HRQoL) and function in femoral neck fracture patients compared with hemiarthroplasty (HA). The HEALTH trial showed no clinically important functional advantages of THA over HA. The current analysis explores factors associated with HRQoL and function in this population.

METHODS

Using repeated measures regression, we estimated the association between HRQoL and function [Short Form-12 (SF-12) physical component score (PCS) and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) function score] and 23 variables.

RESULTS

THA as compared to monopolar HA, but not bipolar HA, was more likely to improve PCS scores (adjusted mean difference [AMD] 1.88 points, P = 0.02), whereas higher American Society of Anesthesiologists score (AMD -2.64, P < 0.01), preoperative use of an aid (AMD -2.66, P < 0.01), and partial weight-bearing status postoperatively (AMD -1.38, P = 0.04) demonstrated less improvement of PCS scores over time. THA improved WOMAC function scores over time compared with monopolar HA (but not bipolar HA) (AMD -2.40, P < 0.01), whereas higher American Society of Anesthesiologists classification (AMD 1.99, P = 0.01) and preoperative use of an aid (AMD 5.39, P < 0.01) were associated with lower WOMAC function scores. Preoperative treatment for depression was associated with lower functional scores (AMD 7.73, P < 0.01).

CONCLUSION

Patients receiving THA are likely to receive small and clinically unimportant improvements in health utility and function compared with those receiving monopolar HA and little improvement compared with those receiving bipolar HA. Patient-specific characteristics seem to play a larger role in predicting functional improvement among femoral neck fracture patients.

LEVEL OF EVIDENCE

Prognostic Level II.

Long-term survival of femoral neck fracture patients aged over ninety years: Arthroplasty compared with nonoperative treatment

Background

The aging of the Chinese population is expected to lead to an increase in nonagenarians and centenarians. The mortality rate in nonagenarian hip fracture patients is equivalent to the mortality rate in the average population at 5 years after injury. It is imperative to evaluate 5-year mortality in this small but very challenging subgroup of patients to optimize patient management. The primary purpose of the current retrospective study was to compare five-year survival in patients aged over 90 years who received arthroplasty or nonoperative treatment for femoral neck fracture during a 16-year period.

Methods

From January 1998 to December 2014, all consecutive nonagenarian and centenarian patients with femoral neck fracture admitted to our hospital were included in the evaluation. The primary outcome was defined as thirty-day, 1-year, 3-year, and 5-year mortality after injury. Survival analysis was performed with the Kaplan-Meier method. Using the log-rank test, stratified analyses were performed to compare differences in the overall cumulative mortality and mortality at three time points (1 year, 3 years, and 5 years) after injury and differences in survival distributions.

Results

Over the 16-year study period, the arthroplasty group and the nonoperative treatment group included 33 and 53 patients, respectively. The long-term survival probability of the arthroplasty group was significantly higher than that of the nonoperative treatment group (p = 0.002). The survival time of the arthroplasty group was significantly higher than that of the nonoperative treatment group (median (P₇₅-P₂₅) = 53 (59) versus median (P₇₅-P₂₅) = 22 (52), p = 0.001). The mortality differences, except for 30-day mortality, at five time points (1, 2, 3, 4, and 5 years) between the nonoperative group and arthroplasty group were significant. The stratified analyses of overall cumulative mortality and mortality at three time points (1, 3, and 5 years) after injury demonstrated that the nonoperative treatment group had significantly higher cumulative mortality than the arthroplasty group.

Conclusions

Our study demonstrates that arthroplasty is more likely to improve long-term survival in femoral neck fracture patients aged over 90 years than nonoperative treatment. It can be expected that nearly half of patients will survive more than 5 years after surgery.

Survival Rate and Application Number of Total Hip Arthroplasty in Patients With Femoral Neck Fracture: An Analysis of Clinical Studies and National Arthroplasty Registers

BACKGROUND

Total hip arthroplasty (THA) is an increasingly popular treatment option for fractured neck of femur (NOF). The primary aim of this study is to systematically review all literature on primary THA and hemiarthroplasty (HA) after fractured NOF to calculate an overall revision rate. Furthermore, we wanted to compare primary THA implantations after fractured NOF between different countries in terms of THA number per inhabitant.

METHODS

All clinical studies on THA and HA for femoral neck fractures between 1999 and 2019 were reviewed and evaluated with a special interest on revision rate. Revision rate was calculated as "revision per 100 component years." THA registers were compared between different countries with respect to the number of primary implantations per inhabitant.

RESULTS

THA studies showed a mean revision rate of 11.8% after 10 years, which was lower than a 24.6% 10-year revision rate for HA. We identified 8 arthroplasty registers that revealed an annual average incidence of THA for fractured NOF of 9.7 per 100,000 inhabitants.

CONCLUSION

This study showed that patients with THA were less likely to be revised at 10 years compared to HA. We found similar annual numbers of THAs for fractured NOF per inhabitant across countries. The results of this analysis can be used to rank present and future national THA numbers within an international context.

What are the influencing factors in self-rated health status after hip fracture? A prospective study on 402 patients

Health status (HS) and influencing factors in HS were evaluated six and 12 months after hip fracture. One-third of the patients did not reach their pre-fracture HS within 1 year. HS before fracture and fall risk could, inter alia, be identified as influencing factors.

PURPOSE

From a patient's perspective, regaining pre-fracture health status (HS) is one of the most important factors concerning the outcome after hip fracture. The aim of this study was to evaluate the HS and particularly to identify influencing factors in HS 6 and 12 months after hip fracture.

METHODS

A total of 402 patients with hip fractures aged 60 years and older were included. HS was evaluated using the EQ-5D questionnaire pre-fracture and at 6 and 12 months after surgery. Multivariate regression analysis was performed to identify influencing factors in HS at 6 and 12 months. Afterwards, the results in the EQ-5D index were dichotomized into worse and equal/better results than before fracture, and a multivariate logistic regression analysis was performed for the dichotomized variables at 6 and 12 months.

RESULTS

The EQ-5D index decreased from 0.71 before the fracture to 0.60 at 6 months (p < 0.001) and increased slightly to 0.63 at 12 months (p = 0.328). A high pre-fracture EQ-5D index was associated with not reaching the pre-fracture EQ-5D index, and a high Tinetti score at hospital discharge was associated with reaching the pre-fracture EQ-5D index at 6 and 12 months. A high ASA score was an influencing factor behind a lower EQ-5D index than before the fracture at 6 months.

CONCLUSIONS

Hip fractures constitute a deep and long-lasting drop in the patients' HS. Early and intensive physiotherapy and individualized rehabilitation programmes regarding a patient's living situation before the fracture seem to be essential to improve HS.

Early mortality and morbidity after total hip arthroplasty in patients with femoral neck fracture

Background and purpose - Early postoperative mortality is relatively high after total hip arthroplasty (THA) that has been performed due to femoral neck fracture. However, this has rarely been investigated after adjustment for medical comorbidity and comparison with the mortality in an age-matched population. We therefore assessed early mortality in hip fracture patients treated with a THA, in the setting of a nationwide matched cohort study. Patients and methods - 24,699 patients who underwent THA due to a femoral neck fracture between 1992 and 2012 were matched with 118,518 controls. Kaplan-Meier survival analysis was used to calculate cumulative unadjusted survival, and Cox regression models were fitted to compute hazard ratios (HRs) and 95% confidence intervals (CIs), with adjustment for age, sex, comorbidity, and socioeconomic background. Results - 90-day survival was 96.3% (95% CI: 96.0-96.5) for THA cases and 98.7% (95% CI: 98.6-98.8) for control individuals, giving an adjusted HR of 2.2 (95% CI: 2.0-2.4) for THA cases compared to control individuals. Comorbidity burden increased in THA cases over time, but the adjusted risk of death within 90 days did not differ statistically significantly between the time periods investigated (1992-1998, 1999-2005, and 2006-2012). A Charlson comorbidity index of 3 or more, an American Society of Anesthesiologists (ASA) grade of 3 and above, male sex, an age of 80 years and above, an income below the first quartile, and a lower level of education were all associated with an increased risk of 90-day mortality. Interpretation - The adjusted early mortality in femoral neck fracture patients who underwent THA was about double that in a matched control population. Patients with femoral neck fracture but with no substantial comorbidity and an age of less than 80 years appear to have a low risk of early death. Patients older than 80 years and those with a Charlson comorbidity index of more than 2 have a high risk of early death, and such patients would perhaps benefit from treatment strategies other than THA, but this should be investigated further.

Quality of life after hip fracture in the elderly: A systematic literature review

BACKGROUND

With an increasing ageing population, hip fractures have become a major public health issue in the elderly. It is important to examine the health status (HS) and health-related quality of life (HRQOL) of the elderly faced with the epidemic of hip fractures.

OBJECTIVE

To provide an overview of reported HS and HRQOL in elderly patients with a hip fracture.

DESIGN

A systematic literature search was performed in Embase, Medline, Web of Science, Scopus, CINAHL, Cochrane, PsycINFO, Pubmed, and Google Scholar in July 2014. Studies which reported the HS or HRQOL based on standardised questionnaires in patients older than 65 years with a hip fracture were considered eligible for inclusion.

RESULTS

After inspecting the 2725 potentially eligible studies, 49 fulfilled the inclusion criteria. All included studies were randomised controlled trials or prospective cohort studies. The methodological quality of the studies was moderate. Patients' functioning on the physical, social, and emotional domains were affected after a hip fracture. The HS and HRQOL of the majority of patients recovered in the first 6 months after fracture. However, their HS did not return to prefracture level. Mental state, prefracture functioning on physical and psychosocial domains, comorbidity, female gender, nutritional status, postoperative pain, length of hospital stay, and complications were factors associated with HS or HRQOL. Treatment with total hip arthroplasty or hemi-arthroplasty provided better HS than treatment with internal fixation with displaced femoral neck fractures. Supportive psychotherapy in "low-functioning" patients, (home) rehabilitation programmes and nutritional supplementation appeared to have beneficial effects on HS.

CONCLUSIONS

Optimizing nutrition intake, (home) rehabilitation programmes, and the possibility for psychological counselling in patients with difficulties in the psychosocial dimensions would be recommended after hip fracture surgery. Besides HS questionnaires like EQ-5D and SF-36, adequate measurements like the WHOQOL-Bref or ICECAP-O are warranted in future studies regarding hip fracture surgery and postoperative treatment options.

Patient and system factors of mortality after hip fracture: a scoping review

Background

Several patient and health system factors were associated with the risk of death among patients with hip fracture. However, without knowledge of underlying mechanisms interventions to improve survival post hip fracture can only be designed on the basis of the found statistical associations.

Methods

We used the framework developed by Arksey and O’Malley and Levac et al. for synthesis of factors and mechanisms of mortality post low energy hip fracture in adults over the age of 50 years, published in English, between September 1, 2009 and October 1, 2014 and indexed in MEDLINE. Proposed mechanisms for reported associations were extracted from the discussion sections.

Results

We synthesized the evidence from 56 articles that reported on 35 patient and 9 system factors of mortality post hip fracture. For 21 factors we found proposed biological mechanisms for their association with mortality which included complications, comorbidity, cardiorespiratory function, immune function, bone remodeling and glycemic control.

Conclusions

The majority of patient and system factors of mortality post hip fracture were reported by only one or two articles and with no proposed mechanisms for their effects on mortality. Where reported, underlying mechanisms are often based on a single article and should be confirmed with further study. Therefore, one cannot be certain whether intervening on such factors may produce expected results.

Postoperative delirium and pre-fracture disability predict 6-month mortality among the oldest old hip fracture patients

BACKGROUND

Age is one of the most robust risk factors for hip fracture. Recent projections indicate that almost half of hip fractures are occurring with an increasing trend among the "oldest old" (i.e., in those aged >85 years).

AIMS

To compare clinical characteristics, outcomes, and risk factors for 6-month mortality in two groups of "oldest old" patients (group 1 = 85-89, group 2 > 90 years), after hip fracture surgery.

METHODS

Observational prospective cohort study with 6-month follow-up, performed in an Orthogeriatric Unit of an academic hospital between March 2007 and November 2012.

RESULTS

Two hundred seventy-five patients (group 1: N = 171; group 2: N = 104) underwent a comprehensive geriatric assessment, including demographics, clinical, functional, nutritional, and mental status. The 6-month rehospitalization and mortality rates after surgery were assessed through structured telephone interviews with patient's caregivers. Multivariate logistic regression models were used to evaluate predictors of 6-month mortality, adjusting for relevant covariates. Fifty-eight patients died at follow-up. The in-hospital and 6-month mortality rates were significantly higher for patients of group 2 than for those of group 1. After adjusting for covariates, the multivariate logistic regressions showed that severe disability (OR 2.24, 95 % CI 1.08-4.65) and postoperative delirium (POD) (OR 3.80, 95 % CI 1.72-8.39) were predictors of 6-month mortality.

CONCLUSIONS

Patients aged >90 years who underwent hip fracture surgery are more likely to die at 6 months than those aged 85-89 years. Pre-fracture disability and POD are predictors of this excess of mortality.

Characteristics and outcome in nonagenarians admitted in general internal medicine and other specialties

To describe the characteristics of nonagenarians admitted to the surgical and medical divisions at a tertiary hospital and compare them with nonagenarians admitted to other hospital care services.

METHODS

A retrospective study of all hospital discharge episodes via the registry of the Basic Minimum Data Set at the Hospital General Universitario de Alicante from January 2007 until December 2011.

RESULTS

Of the 165,870 hospitalizations, 2461 (1.5%) were nonagenarians. The highest number of admitted nonagenarians was in the Division of General Internal Medicine (DGIM) (n=751), followed by the short stay unit (SSU) (n=633). The rate of nonagenarians per 100 admissions to the DGIM was 10.2, significantly higher than that of those admitted to the SSU (6.2) (p<0.001), the service of orthopedic and trauma surgery (2.2) (p<0.001), and other specialties. Females comprised 64.8% of the nonagenarians. Mortality was 17% for the nonagenarians admitted, while for those admitted to the DGIM it was 27.7%. Those hospitalized in the SSU had a lower risk of death during hospitalization (8.1%) (odds ratio [OR] 0.23, 95% confidence interval [CI] 0.16-0.32) and a greater risk of being admitted for diseases and disorders of the circulatory system (OR: 1.58, 95% CI: 1.22-2.05), particularly for heart failure and shock (OR: 1.82, 95% CI: 1.30-2.53), and being discharged with home hospitalization (OR: 8.05, 95% CI: 5.5-11.8).

CONCLUSIONS

Nonagenarian patients represent a tenth of those admitted to the DGIM. The profile of nonagenarians admitted to the DGIM is different from other hospital services. Hospital mortality for nonagenarians admitted to the DGIM is high and superior to other hospital services.