Fractured hips: a clinical survey of one hundred cases of hip fracture treated in a general hospital.
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Differences in risk factor patterns between cervical and trochanteric hip fractures. Swedish Hip Fracture Study Group.
The two types of hip fracture--cervical and trochanteric femoral fractures--are generally considered together in etiologic studies. However, women with a trochanteric fracture may be more osteoporotic than those with cervical hip fractures, and have higher post-fracture mortality. To explore differences in risk factor patterns between the two types of hip fracture we used data from a large population-based case-control study in Swedish women, 50-81 years of age. Data were collected by questionnaire, to which more than 80% of subjects responded. Of the cases included, 811 had had a cervical fracture and 483 a trochanteric fracture during the study period; these cases were compared with 3312 randomly selected controls. Height and hormonal factors appeared to affect the risk of the two types of hip fracture differently. For every 5 cm of current height, women with a cervical fracture had an adjusted odds ratio (OR) of 1.23 (95% CI 1.15-1.32) compared with an OR of 1.06 (95% CI 0.97-1.15) for women with trochanteric fractures. Later menopausal age was protective for trochanteric fractures (OR 0.95, 95% CI 0. 91-0.99 per 2 years) but no such association was found for cervical fractures. Compared with never smokers, current smokers had an OR of 1.48 (95% CI 1.12-1.95) for trochanteric fractures and 1.22 (95% CI 0.98-1.52) for cervical fractures. Current hormone replacement therapy was similarly protective for both fracture types, but former use substantially reduced risk only for trochanteric fractures: OR 0. 55 (95% CI 0.33-0.92) compared with 1.00 (95% CI 0.71-1.39) for cervical fractures. These risk factor patterns suggest etiologic differences between the fracture types which have to be considered when planning preventive interventions.
Age Factors↗
Variation in the efficacy of hormone replacement therapy in the prevention of hip fracture. Swedish Hip Fracture Study Group.
Use of postmenopausal hormone replacement therapy (HRT) has been associated with a reduced risk of osteoporotic fractures. However, it is uncertain whether this risk reduction is modified by other risk factors for hip fracture. In a population-based case-control study in Sweden, we investigated the association between HRT and hip fracture risk within categories of age, body measures and lifestyle factors in postmenopausal women, 50-81 years of age. Mailed questionnaires and telephone interviews were used to collect data. Of those eligible, 1328 incident cases with hip fracture (82.5%) and 3312 randomly selected controls (81.6%) answered the questionnaire. Ever use of HRT in women less than 75 years old was associated with an odds ratio (OR) of 0.66 (95% confidence interval: 95% CI 0.50-0.87) for hip fracture compared with OR 0.40 (95% CI 0.21-0.77) in women 75 years or older. We found a significant interaction between HRT and both weight and physical activity (p < 0.05). The protective effect of HRT was particularly pronounced in lean women: compared with never HRT users, ever users weighing under 60 kg had an OR of 0.44 (95% CI 0.30-0.66) whereas women weighing more than 70 kg had an OR of 0.91 (95% CI 0.53-1.56). Women with low recent leisure physical activity (less than 1 h/week) similarly benefited more from HRT for hip fracture prevention than women with a higher degree of recreational physical activity. The observed interactions with weight and physical activity suggest that HRT has the best protective effect against hip fracture among high-risk women.
Age Factors↗
Hip protectors for preventing hip fractures in the elderly.
BACKGROUND: Hip fracture in the elderly is usually the result of a simple fall and hip protectors have been advocated as a means to reduce impact and consequences of such falls. OBJECTIVES: To determine if external hip protectors reduce the incidence of hip fractures in elderly persons following a fall. SEARCH STRATEGY: The Cochrane Musculoskeletal Injuries Group trials register, MEDLINE, and reference lists of relevant articles were searched, and identified trialists contacted. Date of the most recent search: August 1998. SELECTION CRITERIA: All randomised or quasi-randomised controlled trials comparing the use of hip protectors with a control group. DATA COLLECTION AND ANALYSIS: Two reviewers independently assessed trial quality, using a ten item scale, and extracted data. Additional information was sought from all trialists. Wherever appropriate and possible, the data are presented graphically. MAIN RESULTS: Five randomised trials involving 1681 participants were included within the review. All studies involved elderly people in nursing homes or residential care, three within the Scandinavian countries, one in Japan and one in the United Kingdom. The two largest studies involving 1409 participants randomised by nursing home or nursing home ward rather than by the individual (cluster randomisation). One study of 141 individuals was primarily a compliance study. Summation of results from four of these studies gave an occurrence of hip fractures of 13/620 (2.1%) for those allocated to wear hip protectors, against 57/920 (6.2%) to those not allocated to wear protectors. However due to the large number of participants allocated by cluster randomisation it was not possible to demonstrate conclusively that this difference between groups was statistically significant. Only one of the 13 hip fractures that occurred in the individuals allocated to wear hip protectors occurred whilst the protector was worn. No significant adverse effects of the hip protectors were reported but compliance, particularly in the long term, was poor. REVIEWER'S CONCLUSIONS: Hip protectors appear to reduce the risk of hip fracture within a selected population at high risk of sustaining a hip fracture. However, this conclusion is based on four trials of low to moderate quality. As two used cluster randomisation, pooling of data was not possible. The generalisability of the results is unknown beyond high-risk populations. Results from six ongoing trials may clarify this situation. Acceptability by users of the protectors remains a problem, due to discomfort and practicality.
Aged↗
Outcome following a second hip fracture.
Hip fracture has a significant impact on medical resources and patient morbidity and mortality. Few patients admitted with a hip fracture are considered for prophylactic measures aimed at the reduction of further fracture risk. Currently, 10-13% of patients will later sustain a second hip fracture. In considering the possible role of prophylactic measures in the prevention of second hip fracture, we investigated whether second hip fracture has a significant further impact on patients' mobility and social independence. We also sought to identify a pattern to second hip fracture that may allow targeting of those patients who are most likely to benefit from currently available prophylactic measures. We undertook a retrospective review of 49 consecutive patients admitted with a second hip fracture between August 1999 and September 2000. Fewer patients maintained their ability to walk independently after the second fracture than did so after the first (53 and 91% respectively, P<0.0005). Following second hip fracture, patients' level of mobility determined their future social independence. Older patients and those with a history of multiple falls had a shorter time interval between fractures. Second hip fracture has a significant further impact on patients' mobility and social independence. Younger patients and those without a history of multiple falls are most likely to benefit from medical prophylaxis.
Aged↗
Comparison of femoral geometry among cases with and without hip fractures.
Hip fractures have high morbidity and mortality rate for the people as a complication of osteoporosis and is generally seen in old age. It is known that femoral geometric measurements are important in the assessment of hip fracture risks. This study aimed to examine the association between hip geometry and hip fracture in post-menopausal elderly females. In the present study, 232 hip X-rays were taken from women with no hip fractures (Group 1) and 29 post-menopausal women with hip fractures (Group 2) after a minor trauma. After standard anterior-posterior plain pelvic X-ray radiographs were obtained, various radiographic measurements were performed in all cases, including the hip axis length (HAL), femoral neck axis length (FAL), acetabular width (AW), femoral head width (HW), femoral neck width (FW), femoral shaft width (FSW), intertrochanteric width (TW), lateral and medial cortical thickness of the femoral shaft (LCT, SMCT), femoral neck cortical thickness (NMCT) and femoral neck-shaft angle (Q-angle). In group 1, the mean age, weight and height were 62.5 +/- 7.4 years, 70.8 +/- 12.5 kg, and 157.5 +/- 6.7 cm, respectively. In group 2, these values were 70.17 +/- 6.8 years, 64.7 +/- 11.5 kg, and 158.3 +/- 2.7 cm, respectively. There were no statistically significant differences in the measurements of HAL, FAL, AW and HW between the two groups. In group 2, the mean FW value was significantly higher than in group 1 (p= 0.01). The mean values for FSW, TW, NMCT, SMCT, LCT were statistically lower in group 2 than those in group 1 (p= 0.01, p=0.038, p=0.001, p < 0.001, p < 0.001, respectively). Q-angle was also significantly higher in cases with hip fracture than in cases with no hip fracture (p=0.01). The values of FW, FSW, TW, NMCT, SMCT, LCT and Q-angle seem to be important parameters in the evaluation of hip fracture risks. However, further studies are needed to clarify this conclusion.
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Vitamin D and Hip Fracture.
Hip fractures are recognized as a major public health problem worldwide. Demographic changes will lead to enormous increases in the number of hip fractures and projections indicate that the number of hip fractures occurring worldwide each year will rise from 1.26 million in 1990 to 4.5 million by 2050. However, preventive strategies are available. Supplementation with Ca2+ and vitamin D restores bone quality through suppression of secondary hyperparathyroidism and decreases the risk of falling through improvement of neuromuscular coordination and body sway. This leads to a reduction of hip fracture risk of 43% in the vitamin D-insufficient elderly. Treatment with the bisphosphonate alendronate increases bone strength and results in a 51% reduction of hip fracture risk. Hip protectors absorb energy during a fall and reduce hip fracture risk by 56%. Combining these three procedures could prevent a large proportion of hip fractures in the future.
Journal Article↗
[Immobilization and hip fracture].
Hip fracture is among the most common causes of acute immobilization in elderly patients, and elderly patients with hip fracture are at high risk for a subsequent hip fracture. At baseline, both groups had high serum concentrations of ionized calcium, high urinary deoxypyridinoline (DPD) concentrations, suggesting immobilization-induced hypercalcemia. We previously showed deficiency of vitamins D and K(1) causes reduced bone mineral density (BMD) in female Alzheimer's disease (AD) patients. In a random and prospective study of AD patients, 100 patients received 45 mg menatetrenone, 1,000 IU ergocalciferol and 600 mg calcium daily for 2 years, and the remaining 100 (untreated group) did not. Treatment with MK-4 and vitamin D(2) with calcium supplements increases the BMD in elderly female patients with AD and leads to the prevention of nonvertebral fractures. The risk of hip fracture after stroke is 2 to 4 times as high as that in age-matched healthy controls. Hyperhomocysteinemia is a risk factor for both ischemic stroke and osteoporotic fractures in elderly persons. Randomized, controlled, double-blinded study of 628 consecutive elderly hemiplegic patients at least 1 year following first ischemic stroke. Patients were assigned to daily oral treatment with 5 mg of folate and 1,500 microg of mecobalamin or double placebos, and 559 completed the 2 year follow up. Plasma homocysteine levels in the decreased by 38% in the treatment group and increased by 31% in the placebo group. The number of the hip fractures per 1,000 patient-years was 10 and 43 for the treatment and placebo groups, respectively (p<0.001). In this Japanese population with a high baseline fracture risk, combined treatment with folate and vitamin B(12) is safe and effective in reducing the risk of a hip fracture in elderly stroke patients. Because of limited study power, the relative risk reduction may only be around 0.5.
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Evaluation of the risk of hip fracture.
Hip fracture is the most serious complication of osteoporosis and the incidence is rising worldwide. Bone mineral density measurements can be used not only to diagnose osteoporosis at the hip, but also to give prognostic information on the lifetime risk of hip fracture. A number of additional risk factors enhance the ability of density measurements to assess risk. Candidates include markers of bone resorption, prior fragility fractures, hip axis length, and estimates of postural integrity, each of which improve prognostic value independently of bone mineral assessments. Their use in the stratification of risk will help define intervention thresholds for treatments and improve the design of population screening policies, particularly in elderly women in whom the burden of hip fracture is greatest.
Adult↗
Clinically occult presentation of comminuted intertrochanteric hip fractures.
Hip fractures in awake patients are rarely subtle in their clinical presentation. We report two cases of occult, comminuted, intertrochanteric hip fractures that occurred in awake, elderly patients who were brought to the emergency department for evaluation of other medical conditions. Neither patient complained of hip pain, and both were transported to the ED without spinal immobilization. Physical examination revealed no sign of hip fracture. Patient 1 was scheduled for admission and just prior to transfer out of the ED developed hip pain. Patient 2 was admitted for workup of possible transient ischemic attack and approximately 2.5 hours after admission complained of hip pain. Radiographs of both patients revealed comminuted intertrochanteric hip fractures. In an elderly, nonambulatory patient who may have fallen prior to evaluation, routine radiographs of the pelvis and hip should be performed followed by plain tomography, computed tomography, bone scan, or magnetic resonance imaging as indicated to rule out occult hip fracture. Even comminuted intertrochanteric hip fractures can present in an occult fashion; therefore, a high index of suspicion must be maintained for these injuries.
Aged↗
Total and free estrogens and androgens in postmenopausal women with hip fractures.
Hip fracture constitutes the most serious complication of postmenopausal osteoporosis. To examine the possible role of circulating estrogen or androgen levels in the development of this type of fracture, 25 patients with hip fractures after minimal trauma were compared to an equal number of controls, matched for age and years since menopause. All were from a retirement community, had intact ovaries, and had not taken estrogen replacement for longer than 3 months during their entire lifetime. Hip fracture patients were found to have a significantly lower (P = 0.031) mean (+/-SE) percent ideal weight (89.4 +/- 2.9%) than controls (100.0 +/- 2.5%). Sex hormone-binding globulin levels were significantly higher (P = 0.004) in patients (6.7 +/- 0.4 X 10-8 M) than in controls (4.9 +/- 0.3 X 10-8 M), resulting in lower concentrations of biologically available estradiol and testosterone. In a subgroup of 12 patients and controls matched for percent ideal weight, differences in sex hormone binding globulin and free testosterone and estradiol levels were no longer statistically significant; however, the difference in the percentage of free testosterone persisted. These data suggest that endogenous sex steroids in their unbound form may play a role in the pathogenesis of postmenopausal hip fractures. The differences in free hormone levels appeared to be influenced by the differences in mean body size of the 2 groups. This factor is known to have an important negative effect on the concentration of sex hormone-binding globulin.
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The economic impact of geriatric hip fractures.
Hip fractures, a significant cause of morbidity and mortality in the elderly, are expected to exponentially increase in frequency over the next 50 years as a result of increased life expectancy and population growth. The economic impact of the cost of hip fractures may be enormous. The overall cost of hip fractures includes not only death and illness, but also the costs of medical and custodial care, functional limitations, reduced quality of life, loss of independence, and inability to work, as well as other factors that are difficult to assess--most notably, the indirect effect of the hip fracture on the spouse or family members responsible for care. This review will evaluate the cost of geriatric hip fractures in the hopes of defining the enormous socioeconomic burden of such fractures.
Aged↗
Transitions in the lives of elderly women who have sustained hip fractures.
Hip fractures represent a major health problem within the older population, especially for elderly, white women. As the older woman transitions through the recovery process following hip fracture, her ability to meet basic needs, fulfil usual roles, and maintain well-being is threatened. Despite the rehabilitation provided to these women, studies suggest that hip fractures frequently result in permanent decline in functional status. Little is known about what characterizes those few elderly women who do recover to their previous level of functioning. In this context, a study was designed to identify factors which promote function and enable a successful transition following hip fracture. A total of 15 women ranging in age from 72 to 82, who had returned home alone following care in a Midwestern subacute unit, participated in three focus groups. The data were analysed using the grounded theory method. The findings revealed that the women were confronted with an array of problems, which were labelled function-inhibiting factors. To overcome these problems, the women mobilized their adaptive approaches to life. In addition, they identified various interdisciplinary interventions, labelled function-promoting factors, which helped to provide a successful transition. From these findings, a programme of interdisciplinary interventions was identified which could be implemented in subacute units and tested to establish its effectiveness in promoting a successful transition following hip fracture.
Activities of Daily Living↗
The current hospital costs of treating hip fractures.
Hip fractures impact heavily on our health service resources yet there is no recent United Kingdom study detailing hospital costs for such injuries. A comprehensive analysis of 100 patients admitted with a hip fracture was performed to determine current medical expenditure incurred during acute hospitalisation for hip fracture during 2003. Costs associated with surgery (implant and theatre costs) and laboratory/radiological investigations were established from individual use. The mean stay of the study group (mean age 83 years, 77 females and 23 males) was 23 days. The mean total hospital expenditure per patient was calculated to be 12,163 pounds sterling of which ward costs contributed 84%, operative costs 9% and investigations 7%. These results emphasise the growing economic impact arising from the inpatient treatment hip fractures, most of which relate to length of hospital stay.
Acute Disease↗
Strategies for the prevention of hip fracture.
Hip fractures are associated with 10% to 20% excess mortality in the first year and cause functional disability in most survivors. An estimated 17% of white women in the United States will sustain a hip fracture after the age of 50 years. Despite the availability of evidence-based guidelines for hip fracture prevention, routine screening and preventive measures have not been incorporated into standard primary care practice. Many physicians lack adequate knowledge to initiate bone mineral density testing and treatment with preventive medications to decrease the incidence of osteoporosis and fractures. Furthermore, patients are less likely to request information about bone health than about diseases for which systematic screening and prevention protocols have been established. This review describes preventive measures to decrease hip fracture in postmenopausal women, including screening by bone mineral density testing, risk factor assessment, and chemoprevention. Existing guidelines are summarized, and dilemmas regarding their implementation are discussed.
Bone Density↗
Innovations in the management of hip fractures.
Hip fractures include fractures of the head, neck, intertrochanteric, and subtrochanteric regions. Head fractures commonly accompany dislocations. Neck fractures and intertrochanteric fractures occur with greatest frequency in elderly patients with a low bone mineral density and are produced by low-energy mechanisms. Subtrochanteric fractures occur in a predominantly strong cortical osseous region that is exposed to large compressive stresses. Implants used to address these fractures must accommodate significant loads while the fractures consolidate. Complications secondary to hip fractures produce significant morbidity and include infection, nonunion, malunion, decubitus ulcers, fat emboli, deep venous thrombosis, pulmonary embolus, pneumonia, myocardial infarction, stroke, and death.
Age Factors↗
Osteoporosis in Japan: factors contributing to the low incidence of hip fracture.
Hip fracture incidence seems to be lower in Japan than in many Western countries, but the difference is apparently becoming smaller with progressive Westernization of the Japanese lifestyle and nutritional habits. Nutrition cannot explain the lower incidence of hip fracture. A lower calcium intake prevails in Japan. Genetic differences in body build, including a lower center of gravity, better motor function and agility, well developed hip musculature and small but more fracture-resistant bones secondary to a difference in life- and work-style may contribute to fewer falls and a lower fracture rate among Japanese than among their Western counterparts. Such traditional lifestyle habits as sitting directly on the floor are rapidly decreasing, and time will tell how much of the low incidence of hip fracture in Japan can be explained by lifestyle and how much by genetic and other factors. The Japanese women who now enjoy a low hip fracture incidence led a hard physical life when they were young. This may be a lesson to the young of future generations in how to avoid bone fractures when they are old. Bone health may be achieved by enjoying life through sports or even the tea ceremony in place of the hard physical work of their ancestors, which is gradually disappearing.
Adult↗
Impairment of bone turnover in elderly women with hip fracture.
Hip fracture is one of the most severe consequences of osteoporosis affecting aged women. However, abnormalities of bone turnover responsible for bone loss in this condition have not been clearly defined. To further evaluate the bone metabolic status of women sustaining hip fracture, we have prospectively measured serum osteocalcin as a marker of bone formation and urinary excretion of pyridinoline (Pyr) and deoxypyridinoline (D-pyr) cross-links as markers of bone collagen degradation in 174 independently living women (80 +/- 8 years) within a few hours after a hip fracture. Comparison was made with 77 age-matched controls (80 +/- 5 years) and 17 premenopausal women (39 +/- 3 years). In addition 15 of the patients were followed with daily measurements during the first postoperative week. At the time of admission osteocalcin was 20% lower in the fractured women compared to the elderly controls (7.6 +/- 3.8 vs. 9.5 +/- 4.5 ng/ml, P = 0.001). Pyr and D-pyr were 36% and 40% higher, respectively (P = 0.0001), than in elderly controls and 85% and 76% higher than in premenopausal controls (P = 0.0001). Serum osteocalcin did not correlate with the cortisol level measured at the same time (r = 0.03, ns), nor with serum albumin and creatinine. Serum osteocalcin remained unchanged within 18 hours after fracture, whereafter it progressively decreased until the third postoperative day. No correlation was noted between the excretion of pyridinoline cross-links and the time elapsed from fracture.(ABSTRACT TRUNCATED AT 250 WORDS)
Adult↗