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Geriatric hip fracture is one of the commonest fractures in orthopaedic trauma. There is a trend of further increase in its incidence in the coming decades. Besides the development of techniques and implants to overcome the difficulties in fixation of osteoporosis bone, the general management of the hip fracture is also very challenging in terms of the preparation of the generally poorer pre-morbid state and complicate social problems associated with this group of patients. In order to cope with the increasing demand, our hospital started a geriatric hip fracture clinical pathway in 2007. The aim of this pathway is to provide better care for this group of patients through multidisciplinary approach. From year 2007 to 2009, we had managed 964 hip fracture patients. After the implementation of the pathway, the pre-operative and the total length of stay in acute hospital were shortened by over 5 days. Other clinical outcomes including surgical site infection, 30 days mortality and also incidence of pressure sore improved when compared to the data before the pathway. The rate of surgical site infection was 0.98%, and the 30 days mortality was 1.67% in 2009. The active participation of physiotherapists, occupational therapists as well as medical social workers also helped to formulate the discharge plan as early as the patient is admitted. In conclusion, a well-planned and executed clinical pathway for hip fracture can improve the clinical outcomes of the geriatric hip fractures.
Geriatric hip fracture is a worldwide problem. It imposes a great burden on the resources used in health-care system nowadays [1–3]. The problem is ever increasing in Hong Kong as well. The total number of hip fractures operated in government hospital rises from around 4,000 patients in 2006 to around 4,500 patients in 2009. The mortality rate of these patients is also significant. The 1 year mortality can be up to 33% . Post-operative complications like chest infection and heart failure are also shown to increase mortality rate . In view of these, many centres would like to improve their clinical outcomes, and at the same time, to reduce the costs. It was shown to be effective by a multidisciplinary approach or the use of critical clinical pathway [5, 6].
In year 2006, the need of reforming the hip fracture management becomes one of the primary objectives in our department in view of the increasing number of hip fractures and the lack of systematic approach to this problem. Various clinical pathways from other parts of the world were reviewed. There were good and bad points about individual pathway. Nevertheless, the most important consideration is that the clinical pathway should be suitable to the uniqueness and culture of the Hong Kong medical system. In late 2006, we decided to call for a meeting to gather all the appropriate professions to start the first review of our geriatric hip fracture management. Besides the medical profession, the hospital administration provided full support to the development of this clinical pathway.
The aim of our clinical pathway is to standardise the management of geriatric hip fracture so that these patients can be taken care of effectively and promptly when they are managed by the frontline staff. The goal is to improve patients’ clinical outcomes with good quality of care. It should also bring reduction of the cost of care. It should be stressed that the pathway should not be considered as the golden rule. Individual clinical assessment and management should be respected as different patients have different needs. However, the pathway can help us facilitate our thinking and thus our clinical management.
One of the most tedious but important thing before the pathway started was to identify the problems and determine the solutions. During this process, some historical data were collected before we could proceed. In year 2006, the average pre-operative length of stay is 6.1 days which was considered now as a totally unacceptable figure. Although there is still controversy on the timing of surgery relating to the outcomes of the patients, the common consensus is to operate these patients once they are medically optimised. These fractures should be operated as soon as possible [4, 7–11]. The pre-operative length of stay should be kept to within 48 h. This was quoted as a national guideline by the British Orthopaedic Association . Therefore, the improvement of our pre-operative length of stay is set as our first priority. On the other hand, the 2006 data on post-operative length of stay in acute hospital was 6.6 days. The average length of stay in rehabilitation hospitals was 40 days.
One of the reasons in delay of pre-operative workup is the lack of awareness and the general attitude on how these patients are prepared for surgeries. In Hong Kong, the hip fracture patients are most of the time transferred to our hospital within 4–6 h. At present, over 95% of the hip fractures are fixed surgically. All of them should be prepared for operation as soon as they arrived in the accident and emergency department. In order to speed up the pre-operative preparation, there should not be any delay, wastage of time nor resources. After our first meeting, several problems were identified.
Aiming to tackle all these problems, the geriatric clinical pathway was set up in the 2007. However, it is expected to bring big change to every aspect of the system. The support of various leaders in different departments is required, for example, anaesthesia, physician, nurses, physiotherapist, occupational therapist and medical social workers. We all agreed that the clinical pathway should be a simple and easy way to allow the frontline doctors, nurses and paramedical staff to follow. It is important to smooth out the work flow of both the acute and rehabilitation hospitals without increasing the burden of the daily clinical work.
A pilot run is a must before the full implementation to ensure smooth running and adjustment of the staff.
Since the beginning of our pathway in early 2007, data has been collected and analysed to monitor our result and progress. In our hospital, the total number of hip fracture analysed since 2007 till end of 2009 is 964 patients. The mean age is 83. The male to female ratio is 1:2.8. The numbers of left and right fractures are nearly the same.
Concerning the pre-operative status of these patients, the American Society of Anaesthesia (ASA) score is used to assess these patients, ranging from 1 to 4 where 1 is most healthy and 4 is anaesthetically unfit. We have <3% of patients which belong the ASA 1. Between 46% were ASA 2 and the others, 52% were ASA 3. Only 3% of patients were recorded to be completely healthy when they are admitted to the hospital. About half of the patients had three or more comorbidities. The commonest comorbidities are hypertension, diabetes and dementia.
Regarding the fracture patterns, 49% are femoral neck fractures. The other 49% are intertrochanteric fractures and the remaining 2% sub-trochanteric fractures. Cannulated screws fixation was done in 16% of patients. The remaining 27% of patients had hemiarthroplasty done. There was an increase of using cephalomedullary device in recent years. Eight percent of patients had cephalomedullary device fixation in 2007 and the number was increased to 22% in 2009. This was also reflected in the general decrease in use of dynamic hip screw from 45% in 2007 to 35% in 2009. After the operation, 72% did not need any blood transfusion. The rest needed less than 2 units of blood transfusion.
Among these patients, about 70% come from home and the rest come from old age home or nursing home. Regarding the walking ability, unaided walker before the operation comprised 37% of patients. Majority of these patients, 56%, already needs walking aids before surgeries. Others are mainly chair-bound.
While we need to predict the prognosis of the hip fracture patients, besides assessing the premorbid physical state of the patient, the mental state and the ability to take care of themselves are also very important . MMSE is used to assess the mental state of the patients. In the last 3 years, the statistics remain static. About 56% failed the MMSE which means score was less than 18. Regarding the MBI score, 43% of them are completely independent. It reflects many of these patients need some kind of help during their daily lives.
One of the main goals of our clinical pathway is to improve the hospital length of stay in both acute and convalescence hospital. As previously mentioned, the average pre-operative length of stay in 2006 is 6.1 days. After the implementation of the pathway, it drastically shortened the length of stay to 2.53 days in 2007 and 1.42 days in 2009. The post-operative length of stay and the total length of stay were also decreased to 5.54 and 6.66 days, respectively (Fig. 2). With regards to the length of stay of convalescence hospital, there was also a drastic decline from the around 40 days in 2006 to 22.8 days in 2009 (Fig. 3).
The implementation of clinical pathway also improved the incidence of hospital acquired pressure sore. The incidence decreased from 4.3% to 0.3% from 2007 to 2009.
The 30 days mortality rate was also significantly decreased and was kept at a low level compared with international standard [4, 6]. Our mortality rate was 1.67% in 2009. The rate in 2007 and 2008 are 1.7%. The 28 days re-admission rate after discharge from hospital remains static at 15%. Among these patients, about 64% are medical problems related.
In 2006, the infection rates of the internal fixation and hemiarthroplasty were 0.81% and 2.61%, respectively. This infection rate was reduced and kept low since 2007. The infection rate of internal fixation was kept at 0% in 2008 and 2009. The infection rate of hemiarthroplasty was also reduced to 0.98% in 2009 (Fig. 4).
Regarding the social aspect of these hip fracture patients, the difficulties lie in the multiple factors that cause delay in discharge and rehabilitation. Medical social workers are very helpful in this aspect. Since the start of the clinical pathway, over 99% of the hip fracture patients were assessed and helped by medical social workers. Together with the effort from nurses and therapist, we are able to discharge 81% of the patients back to their premorbid living environment (Fig. 5). Besides, a lot of post discharge help care providers are involved in the initial re-integration of the patients back to the society, for example, day care centres, geriatric day hospitals, maid care, non-government organisations or combination of the above.
Our hospital is one of the first to adopt a multidisciplinary approach to manage the geriatric hip fracture patients from acute hospital to convalescence hospital in Hong Kong and probably in Asia as well. The patients are taken care of by different professions using a systematic approach from the minute when they are admitted through the accident and emergency department till they walk out the door of the rehabilitation hospital.
In 2009, there were more than 4,400 hip fractures operated in Hong Kong. In average, 68% of the patients were operated within 2 days after admission. In our hospital, we have 86% of our patients operated within 2 days after admission. This is, to our understanding, one of the best performances in our locality. Moreover, the hip fractures are only operated in day time. Furthermore, this pre-operative shortened length of stay also indirectly relates to a similar shortening of total length of stay in acute hospital. Although there is still a lot of debate on the timing of surgery relating to mortality, hip fracture outcome or complications, we are confident that shortening the pre-operative stay by better communication between surgeons, anaesthetists and physicians, more efficient use of resources and better monitoring of the system will, by simple logic, improve the outcomes and decrease the suffering of our patients.
According to our data, there is a general trend of increasing age in our hip fracture patients. The average age in 2007 was 82, in 2008, it was 83 and in 2009, it was 84. We do not expect it to have an annual increase but it may represent that we may need to deal with older and older patients and thus more comorbidities in the future. In the mean time, the commonest comorbidities are hypertension and diabetes. Although they are not serious problems, these usually result in other more significant problems like heart problems, cerebral vascular problems, etc. And the need of involvement of geriatrician seems to be one of the important issues in the future development of a better clinical pathway.
We observed that there is a general trend of increasing use of cephalomedullary device on trochanteric fractures in recent years. The use was nearly threefold in 2009 when compared with the data in 2007. Probably this is because of the introduction of concept of inadequate lateral wall buttress in trochanteric fracture. These fractures may have excessive collapse when they are fixed with sliding hip screws. As a result, they may have cut-out of the lag screws. However, the use of these nails in unstable A2 (AO/OTA classification) fractures was controversial [16, 17]. Nevertheless, in some of these A2 fractures, when the lateral walls look flimsy under fluoroscopy, many surgeons would tend to use nails for fixation. This trend may not continue when some more evidence comes up in the future.
One of the most significant improvement in our care after the implementation of the pathway is the significant shorten pre-operative length of stay in acute hospital and the total length of stay of both acute and convalescence hospitals. The average pre-operative length of stay in our hospital was 1.4 days in 2009. This definitely decreases the suffering of the patients as this greatly minimised the pain and distress cause by the unstable hip fractures when they are nursed in the beds. On the other hand, the 28 days mortality also showed a general decrease in the last 3 years. Despite the general increase in age each year, complications like pressure sore, wound infections, chest infection and urinary tract infections are also decreased.
Besides the improved clinical outcome of the patients, the marked shortening of stay also has a strong positive effect on the cost of management. This clinical pathway only utilises the available human and material resources. A case manager, who is a full time nurse, is the additional staff that was created because of the clinical pathway. One case manager can take care of 2–3 clinical pathways at the same time. The average reduction of five patients per day for each patient in acute hospital implies a significant of reduction of cost of care. The cost of care of a hip fracture patient in acute hospital is around US $400 each day. About 400 cases are admitted each year; the savings in each year is about US $800,000 in acute hospital. On the other hand, this reduction of cost also continues in the rehabilitation hospital.
Discharge problem, in our opinion, is the second most complicated issue in hip fracture patients, which is just followed by the pre-operative assessment issue. This has to be solved by multidisciplinary approach as well. Medical social workers, physiotherapist, occupational therapist, nurses and doctors have to be involved in the planning of discharge when the patient is admitted. In fact, all the pre-operative assessment, surgical procedures, rehabilitation and care arrangement are designed to maximise the patient ability to return to their previous premorbid level and placement as soon as possible. However, this is an idealistic statement and the truth is most of the time, these patients have some disability afterwards. Nevertheless, we are proud to say that most of our patients can return to their original living place when they are discharged. Only about 10% of the patients need to have their placement re-arranged which is mostly because their home environment, even after support and adjustment, becomes unsafe for them to return.
The introduction of the geriatric hip fracture clinical pathway in early 2007 was initially started because of the need to control the foreseeable increase in resources spent on these fractures in the coming 10 years. However, many of the orthopaedic colleagues still think that these fractures should have a less priority than the fractures in the young ones and these old people outcome can never be improved by simple measures. Physicians and anaesthetists still think that these elderly patients need to be “fit for surgery” in the same way as elective surgeries. Nevertheless, these misconceptions had been clarified as the clinical pathway progressed. We believe optimization of general condition and early fixation and the multidisciplinary approach to tackle the problems have led to the low mortality rate and complication rate, as well as the significantly shortened length of hospital stay. The results in the past 3 years are not only encouraging but also lead us to believe that the cost of care and the quality of care are not mutually exclusive. Finally, we are sure that there is still room for further improvement. We hope that the present model can be used as reference for other centres with similar health-care setup in their effort to improve the care of the fractures in the elderly.
The authors would like to thank Ms. So-man Wong, specialty nurse, and Ms. Pearl Chan for their dedication to the preparation of the data and statistics.
Conflicts of interest None.
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