Neurological physiotherapy



Neurological physiotherapy


Christine Smith, Anita Watson and Louise Connell



Introduction


Neurology is a specialised field that deals with disorders of the nervous system. There are a vast number of neurological conditions that can affect the central nervous system (CNS – brain and spinal cord), the peripheral nervous system and the autonomic nervous system. The challenges facing physiotherapists working in the clinical field of neurology are many and varied. The complex nature of the human nervous system and the broad range of neurological conditions found in clinical practice place heavy demands on physiotherapists. The onset of a neurological condition as a result of disease or trauma has a devastating effect not only on the patient but also on their families. It is essential that any approach to management encompasses the needs of all parties. Many neurological conditions are progressive and longstanding, and result in some element of residual impairment. There are numerous challenges in the rehabilitation process from early diagnosis and treatment through to discharge. The longstanding nature of many neurological conditions means that professionals are involved in the management and rehabilitation of patients over a number of years.


An emerging evidence base surrounding the issues of neurological rehabilitation means that the role of the physiotherapist in treating and managing neurological conditions is developing. Current research identifies the importance of task-specific, strength and repetitive training. Alongside this the use of novel interventions, such as functional electrical stimulation (FES) and constraint-induced movement therapy (CiMT) are advocated. Research has shown that no one treatment approach is superior to any other; instead, practitioners need to select the most appropriate intervention based on the available evidence base. Neurological damage can result in the disruption of normal physical, psychological, cognitive and social functions, which reinforces the need for a collaborative and co-ordinated approach from a wide range of rehabilitation professionals. It is vital that a truly holistic approach to the management and treatment of patients and their families be adopted, with clinical reasoning and problem-solving at its centre. Practitioners need to understand both the patients’ and carers’ perspective. Research has shown that therapists’ and patients’ goals often differ. As such, measurement of outcome is an important aspect of neurological rehabilitation. The chapter provides a section on outcome measurement and goal-setting in relation to the International Classification of Function (ICF) framework set out by the World Health Organization (WHO) in 2001. The most appropriate measures have been selected based on their psychometric properties. Readers should refer to Tyson et al. (2008) for further information.


This chapter begins by outlining the principal causes of neurological damage and then describes types of movement disorders and the most frequently encountered clinical features. The clinical features have been grouped together into categories to aid cross reference within the assessment process. Physiotherapy assessment and the main evidence-based interventions are then discussed in relation to present-day clinical practice. A new section on promising interventions that use rehabilitation technologies has been included to demonstrate their growing use in healthcare practice. The chapter concludes with an overview of the more commonly known neurological conditions, namely stroke, multiple sclerosis, motor neurone disease and traumatic brain injury (Figure 26.1). These sections are not intended to be exhaustive and readers can consult the lists of further recommended reading at the end of the chapter.


image
Figure 26.1 Brain.





The fundamentals of CNS damage


Principal causes of neurological damage


The most commonly occurring neurological conditions are those that occur as a result of problems within the circulatory system, namely stroke (see later section). Other causes of neurological damage include trauma, as in head injury or spinal injury, where direct or indirect trauma results in temporary inflammation processes occurring and, therefore, repairable or permanent damage (if there has been destruction of nerve tissue). Diseases can affect the nervous system and some seem to have an affinity for a particular part of the system. Examples of diseases that can affect the nervous system are meningitis, syphilis, and (less commonly) tuberculosis and poliomyelitis. Diseases of unknown origin that affect the CNS include multiple sclerosis and motor neurone which are discussed later in the chapter.


Congenital defects, such as spina bifida, inherited conditions, such as Huntington’s chorea, spinocerebellar ataxia, vitamin B deficiency and neoplasms, and toxic substance poisoning, such as lead, arsenic and mercury, can all also have a detrimental effect on the nervous system. However, these are less common occurrences and therefore will not be covered within this chapter. Peripheral neuropathies and fibromyalgia are also not covered.



Clinical features of damage to the CNS


Movement disorders


The result of abnormal tone, altered motor control and impaired sensory input will lead to what is known as a movement disorder. Day-to-day functions, such as walking, dressing and eating, become difficult to perform owing to movements becoming un-coordinated, uncontrollable and involuntary. Common movement disorders are listed below and can be seen with conditions such as stroke, multiple sclerosis and Parkinson’s (see Chapter 24).









Impairments


The signs and symptoms of damage or disease to the CNS are commonly known as clinical features. These clinical features are also described as impairments when using the ICF classification of functioning, disability and health (ICFDH – see later section). The site and severity of disruption to the CNS will determine which impairments are seen. However, because the CNS is integrative, damage to one part can result in a disruption of function of other parts. This means that the site of damage alone is not necessarily a predictor of the impairments the patient will present with. For the purpose of classification, impairments will be considered under the headings of motor impairments, sensory impairments, visual impairments, congnitive impairments, behavioural changes, perceptual disturbances, auditory disturbances, communication disturbances/swallowing, fatigue, bladder/bowel incontinence and automatic disturbances.



Motor impairments

Damage to neural motor pathways or motor cortex areas, and direct muscle damage will lead to a loss or limitation in muscle function.



• Muscle weakness and/or atrophy – a reduction in muscle strength of a single muscle or groups of muscles. Weakness can be specific to a side, such as hemiplegia, or be generalised as a result of a person no longer performing physical activities (deconditioned). Atrophy describes muscle loss owing to lack of use.


• Muscle tone – this is the ‘state of readiness’ of an individual’s muscles at rest. It is vital for maintaining posture. The continuous small adjustments of the muscle sensory receptors (muscle spindles and Golgi tendon organs (GTOs) prepare the muscles for movement). Muscle tone can become increased (hypertonic) or decreased (hypotonic) depending on the amount of information being sent to the muscle receptors. This means that damage to the CNS can result in altered muscle tone.


• Spasticity – is ‘a motor disorder, characterised by a velocity-dependent increase in tonic stretch reflexes (muscle tone) with exaggerated tendon jerks, resulting from hyper-excitability of the stretch reflex as one component of the upper motor neurone (UMN) syndrome’ (Lance 1980).


• Hypotonia – is low muscle tone. Muscle receptors are unprepared for movement resulting in resistance-free movement and weakness of muscles.


• Rigidity – is an increase in muscle tone which leads to a resistance in passive movement. There are two types commonly found in Parkinson’s:




Sensory impairments

Damage to the sensory receptors, sensory cortex areas or pathways carrying sensory information, such as touch, joint position and pain, will result in the following:







Perceptual disturbances

Perception is the process of acquiring, interpreting, selecting and organising sensory information. Damage to areas within the brain that co-ordinate sensory and motor information can lead to the following:



Apraxia is a disorder of planning. The individual has the ability to perform a movement or talk about what the task will involve but is unable to perform the task in the correct sequence.


Cognitive, emotional, behavioural and perceptual impairments will all affect the success of an intervention. An individual’s ability to concentrate, remember, understand and be motivated will determine the effectiveness of a treatment. It is important that these impairments are assessed by the multi-disciplinary team (MDT) to ensure that each healthcare profession can manage these aspects within their treatments.








Assessment of neurological patients


As in all areas of physiotherapy, assessment is an ongoing process that is an integral part of treatment. Assessment of neurological patients is complex, and a particular diagnosis can result in very different presentations. Many members of the healthcare team will carry out assessments. Wherever possible, joint assessments with sharing of information will be carried out. Often, the initial assessment occurs over a number of sessions, because carrying out a full assessment in one attempt can frequently be too tiring for the patient. Gathering information over a longer period of time invariably gives a much more accurate picture of the patient’s strengths and difficulties.




Subjective assessment


Obtaining a thorough subjective history is very important. This can come from a variety of sources: the medical notes, nursing notes, the patient, relatives and carers. Initial interviews can be important, not just for gathering information, but also because this is where establishing a rapport with the patient and carers begins.


Physiotherapists need to draw on all aspects of their communication skills to allow the patient and family to be at ease. Increasingly, in appropriate cases, initial interviews take place in the patient’s home. This not only ensures the person is more relaxed, but allows assessment of the patient’s functional environment. Later, when home programmes are being devised, knowledge of the patient’s home can be invaluable.


When assessing patients with communication disorders, it is important to find alternative or supplementary methods of communicating with the patient. Collaboration with the speech and language therapist is invaluable at such times.


While interviewing the patient, important clues can be observed with regard to physical abilities, communication, cognition, emotion, hearing, vision and attention span. It should also be noted how much the patient changes position, attends to posture and so on. Assessment thus begins the minute contact is made with the patient.


The assessment should include both background history and also components specific to physiotherapy. Background history should include demographic details, past medical history, diagnosis, history of present condition, present condition, medication, social factors (housing, family, lifestyle, care circumstances) and details of the involvement of other healthcare professionals.



Objective assessment


The main purpose of the clinical examination is to gather information about the patient’s movement disorder and level of functional ability (Freeman 2002). Initially, observe the patient and try to draw conclusions about what they are able to do unaided. It is important to remember that at no point must the patient be put at risk. It is part of the physiotherapist’s role to ‘risk assess’ what is reasonable to allow the patient to attempt independently and what they need help with in order to be safe. Objective assessment should include assessment of active and passive range of movement and strength. This will guide observation of posture and movement analysis in sitting, lying to sitting, sit-to-stand, transferring from bed to chair, standing and walking, etc. The exact activities observed and/or assisted will depend on the level of ability of the patient. Once the patient has been given the opportunity to demonstrate what they can do unaided, assistance can then be given to ascertain what the person can achieve with help. This is where assessment and treatment begin to merge into one and the same thing. The assessment begins when initial contact is made. For instance, observing the person’s gait when they walk into the room often gives a more accurate picture of functional gait pattern than when the person is asked to walk while being watched.



International Classification of Functioning, Disability and Health


The WHO provides a useful framework and common terminology for describing and measuring the consequences of disease and the impact that rehabilitation may have on them (Edwards 2002). This is the International Classification of Functioning, Disability and Health, known more commonly as ICF, which provides a standard language and framework for the description of health and health-related states. This describes changes in body function and structure (impairment), what a person with a health condition can do (their level of ability), as well as what they actually do in their usual environment (their level of participation).



Research by the Greater Manchester Outcome Measures Project team identified the domains that physiotherapists need to measure during clinical assessment in neurological patients using the ICF as a framework. (Tyson et al. 2008). They suggested neurological assessments should include assessment of:


Impairments (problems in body functions or structures)



Activities (ability an individual has in executing activities)



Ultimately, physiotherapy aims to improve an individual’s ability to undertake activities to improve function, participation and quality of life.



Outcome measures


Objective measurement of function is core within rehabilitation, with both clinical guidelines and professional bodies such as the Chartered Society of Physiotherapy (CSP) explicitly stating that standardised outcome measures should be used. Therefore, part of the objective assessment should include use of standardised outcome measures, which provide baseline information on individual’s ability and can be repeated to evaluate effectiveness of treatment. In the current climate of limited resources and financial cuts, it is vital that physiotherapists undertake robust, standardised measures to enable evaluation of the effectiveness of their treatment at an individual and service level. It is no longer acceptable to state physiotherapy treatment is effective – we need to be able to provide evidence to justify this.



Measurement implies the quantification of data in either absolute or relative terms. Determining the effectiveness of an intervention by measuring its effect on an outcome provides the basis for evidence-based healthcare (Edwards 2002). Outcome measures take the guesswork and subjectivity out of evaluation and can assist the physiotherapist in proving clinical effectiveness.


Outcome measures also provide a method of communication. The importance of a language of universal use among clinicians must be promoted. The focus on multidisciplinary care and the blurring of traditional professional boundaries requires, at the very least, a system of measurement that can be understood by and utilised by the whole interdisciplinary team.


There are a wide range of outcome measures available and care is required when deciding which outcome measure to use and when. The general principles to follow when developing and/or considering the use of outcome measures are:



For a discussion of outcome measurement theory and properties in rehabilitation, we refer the reader to Finch et al. (2002).



Outcome measures should be sensitive enough to allow for measurement of changes over time. The use of a suitable outcome measure for all physiotherapy interventions is an essential part of the treatment and management process, and the clinical area of neurology is no exception.



Outcome measures in context


Physiotherapy outcome measures should be considered in the wider context of rehabilitation. Rehabilitation can be considered a problem-solving and educational process aimed at reducing disability and enhancing function in people who are affected by disease (Wade 1992). Rehabilitation principles are based upon the enhancement of activity by restoring skills and capabilities through functional retraining and environmental adaptation. Rehabilitation promotes independence and aims to facilitate the fullest potential physically, psychologically, socially and vocationally for a patient. Rehabilitation involves the recovery or improvement of function, as well as prevention of disability and the maintenance of a social role.


Irrespective of the approach taken towards rehabilitation, the ability to quantify the function is the key to successful treatment. This process involves assessment, treatment-planning, goal-setting and evaluation of outcome. The WHO ICF classification and the process of rehabilitation together provide the context for which outcome measurement is used in physiotherapy.


Table 26.1 provides a summary of the outcome measures commonly used within neurology. It is not meant to be comprehensive and the reader is directed to the ‘Further reading’ list at the end of the chapter.



Table 26.1


Outcome measures frequently used within the clinical setting






















































































































Dimension Outcome measure References
Impairments    
Muscle strength Hand-held dynanometer Bohannon et al. (1995)
  Medical Research Council (MRC) grades MRC (1976)
Range of motion Goniometry Norkin and White (1975)
Tone Modified Ashworth Scale Bohannon and Smith (1987)
Sensation Nottingham Sensory Assessment Lincoln et al. (1998)
Fatigue Fatigue Severity Scale Petajan et al. (1996)
Activity  
Global activity    
Generic Barthel Index Mahoney and Barthel (1965)
  Functional Independence Measure Granger et al. (1993)
Disease-specific Motor Assessment Scale for Stroke Carr et al. (1985)
Focal activity    
Gait Ten-metre timed walking test Wade (1992)
  Rivermead Mobility Index Collen et al. (1991)
Mobility Rivermead Motor Assessment Lincoln and Leadbitter (1979)
Balance Brunel Balance Assessment
Berg Balance Scale
Functional Reach Test
Tyson & DeSouza (2004)
Berg et al. (1989)
Duncan et al. (1990)
  Timed get-up-and-go test Podsialo and Richardson (1991)
Upper-limb function Box and Block Test
Nine-hole Peg Test
Mathiowetz et al. (1985)
Mathiowetz et al. (1985)
  Action Research Arm Test Crow et al. (1989)
Participation London Handicap Scale Harwood et al. (1997)
  Environmental Status Scale Mellerup et al. (1981)
Quality of life
Generic Thirty-six-item Short Form Health Survey Ware et al. (1993)
  Nottingham Health Profile Hunt et al. (1981)
Disease-specific Thirty-nine-item Parkinson’s Disease  
  Questionnaire Peto et al. (1995)
  Functional Assessment of Multiple Sclerosis Cella et al. (1996)


image



Goal-setting



Once the assessment is complete, key problems need to be identified by using clinical reasoning processes. Goals of treatment, with appropriate timescales, can be formulated with the patient and the family. Goals need to be negotiated and discussed with all parties, including the rehabilitation team, so that there is a clear understanding of what is involved in achieving them. Failure to go through this process can lead to frustration and misunderstanding for all parties, particularly the patient and the family.


The planning of goals is necessary to ensure that the rehabilitation effort is as effective and efficient as possible (Elsworth et al. 1999). Outcome is better if the goals involve the patient, are challenging and are set at different levels.


The evidence relating to goal-setting is limited, but there is a general trend towards the inclusion of goal-setting in the rehabilitation process (Wade 1999c). With the emphasis on patient-centred care and inclusion of the patient in the decision-making processes, a formal process of goal planning will help to improve the co-ordination and co-operation of all those people involved. Co-operative goal setting makes the process of rehabilitation more patient-focussed and helps to motivate the patient through the long period of rehabilitation and beyond. In other words the effects of treatment will be long-lasting and continue to be evident when treatment has ceased.


Good rehabilitation practice should involve SMART goals (specific, measurable, achievable, realistic, time-framed).



It is common practice to set goals for the long, medium and short term. In summary, the terms commonly used to document goals are:



In summary, goal-setting allows for the alignment of patient and professional goals. It is a method of ensuring that the rehabilitation team focusses on the needs of an individual patient and can help to motivate patients. It should lead to an overall improvement in treatment effectiveness and provide a method of measuring the effectiveness of treatment interventions (McGrath and Adams 1999; Edwards 2002).




Interventions


Task-specific practice


Ultimately, the majority of treatment aims to increase ability at a task or activity, and, consequently, one approach to treatment is simply to practise the task itself. Task-specific practice – repeated practice of tasks similar to those commonly performed in daily life – is a component of current approaches to stroke rehabilitation. In the past the focus of treatment was on reducing impairments in the expectation that activities would naturally improve.


Systematic reviews of treatment interventions suggest that participants benefit from exercise programmes in which functional tasks are directly trained, with less benefit if the intervention is impairment-focussed (Van Peppen 2004). Examples of task-specific practice include practising sit-to-stand, walking and reaching activities, and are often mixed with other components, including strengthening and treadmill training.



How the intervention might work


Many aspects of rehabilitation involve repetition of movement. Repeated motor practice has been hypothesised to reduce muscle weakness and spasticity (Feys 1998, Nuyens 2002), and to form the physiological basis of motor learning (Butefisch 1995), while sensorimotor coupling contributes to the adaptation and recovery of neuronal pathways (Bruce and Dobkin 2004). Active cognitive involvement, functional relevance and knowledge of performance are hypothesised to enhance learning (Carr and Shepherd 1987).



Evidence


Most research has been undertaken on patients with stroke. A Cochrane review, acknowledged as the best single source of evidence about the effects of healthcare interventions, has been undertaken on repetitive task training for improving functional ability after stroke (French et al. 2007). This showed repetitive task training resulted in modest improvement in lower limb function, but not upper limb function. Training may be sufficient to impact on daily living function. However, there is no evidence that improvements are sustained once training has ended. An evidence-based review of upper limb interventions found repetitive task-specific training may improve arm function (EBRSR 2009).




Exercise


Exercise (as covered in Chapter 13) includes stretching, strengthening and aerobic types of activities. If performed regularly with enough repetitions and appropriate duration these activities can develop into an exercise programme that will improve an individual’s range of movement, muscle strength and physical fitness.


Current literature reviewing the effectiveness of these types of exercise now shows that strengthening exercises are beneficial to many types of neurological patients in the acute, rehabilitation and community settings (Weiss et al. 2000; Romberg et al. 2004). A Cochrane review suggested that aerobic exercise to develop physical fitness in stroke patients can improve their walking speed, tolerance and level of mobility (Saunders et al. 2009).


Any activity that seeks to enhance or maintain a function or movement can be classed as exercise. Task-specific training is one such form of exercise that has been proven to improve function in neurological rehabilitation (see above).


In summary, exercise should be considered a key part of the rehabilitation programme in the acute, rehabilitation and community settings. The exact number of repetitions, intensity, how often and content are currently being looked into. The reader should review the emerging evidence base to identify what will work best.



Treadmill training


The recovery of walking is important to function. It influences the discharge destination and package of community support an individual receives when leaving a rehabilitation environment. Physiotherapists concentrate a large amount of time on regaining safe mobility, be it independent or with an assistive device. The importance of repetitive practice (as highlighted by task-specific training and strengthening) has forced therapists to look at alternative methods for achieving increased intensity and duration of walking practice.


The use of walking aids allows body weight to be supported but leads to an altered gait pattern, which can be tiring to maintain. Hoisting equipment allows a patient’s body weight to be partially supported while walking and a more normal gait pattern to be adopted. However, a large space is required to walk a patient with this type of equipment so intensity, distance and duration are low. The introduction of a treadmill, which provides a constant flat moving surface, gives patients the chance to walk greater distances without moving around a room and provides safety with the use of a partial body weight support (PBWS). This type of walking practice can reduce the number of therapists needed to walk a patient (Figure 26.2).


image
Figure 26.2 Treadmill.

Stay updated, free articles. Join our Telegram channel

Jan 7, 2017 | Posted by in PHYSICAL MEDICINE & REHABILITATION | Comments Off on Neurological physiotherapy

Full access? Get Clinical Tree

Get Clinical Tree app for offline access