Physical disabilities encompass a broad range of conditions that affect a person’s movement, physical functioning, strength, coordination, endurance, sensation or ability to interact with their physical environment. These disabilities may be present from birth, develop during childhood or occur later in life through injury, illness or degenerative conditions.

Physical disability may affect a person’s ability to perform everyday occupations, including:

• personal care;
• domestic activities;
• education;
• employment;
• community access;
• recreation;
• social participation.

However, physical disability does not necessarily mean reduced independence or inability. Many people with physical disabilities successfully participate in all areas of life through a combination of personal strategies, assistive technology, environmental modifications, human support and accessible design.

Within assistance animal practice, the presence of a physical disability diagnosis alone does not determine whether an assistance dog is appropriate. Assessment must focus on the interaction between the person, their occupations, their environment and the potential role of the animal.

The relevant clinical question is not:

“Does this person have a physical disability?”

but:

“Would an appropriately selected and trained assistance dog reduce functional barriers and support this person’s independence, participation and quality of life?”

Understanding Physical Disability

Physical disability may involve differences or limitations in:

• mobility;
• muscle strength;
• coordination;
• balance;
• range of movement;
• fine motor control;
• sensation;
• endurance;
• physical access.

The impact of physical disability varies significantly between individuals. Two people with the same diagnosis may have very different functional abilities depending on:

• severity of impairment;
• available supports;
• environment;
• assistive technology;
• personal goals;
• fatigue and health fluctuations.

For example, one person with spinal cord injury may use a wheelchair independently and require minimal assistance, while another may require significant support with daily activities due to higher-level injury, fatigue or additional health conditions.

Occupational therapy assessment therefore focuses on what the person wants and needs to do, rather than focusing only on what they cannot do.

Types of Physical Disabilities Relevant to Assistance Animal Practice

Physical disabilities may result from a wide range of conditions, including:

• spinal cord injury;
• cerebral palsy;
• muscular dystrophy;
• limb difference or amputation;
• acquired brain injury;
• multiple sclerosis;
• arthritis and connective tissue disorders;
• neurological movement disorders;
• chronic pain conditions;
• degenerative conditions;
• genetic conditions affecting physical function.

Spinal Cord Injury

Spinal cord injury occurs when damage to the spinal cord disrupts communication between the brain and the body. The impact depends on the location and severity of the injury.

Spinal cord injuries are commonly described according to the level of injury, including:

• quadriplegia (tetraplegia);
• paraplegia.

Quadriplegia (Tetraplegia)

Quadriplegia, also known as tetraplegia, occurs when injury to the cervical region of the spinal cord affects the arms, hands, trunk and legs.

The impact varies considerably depending on the level and completeness of injury.

A person with quadriplegia may experience differences in:

• upper limb movement;
• hand function;
• sensation;
• strength;
• breathing;
• temperature regulation;
• independence with daily activities.

Assistance dogs may support some individuals with quadriplegia through tasks such as:

• retrieving dropped items;
• opening accessible doors;
• pressing accessible buttons;
• retrieving phones or emergency items;
• assisting with everyday routines.

However, assistance dogs should not be expected to provide unsafe physical assistance, such as pulling a wheelchair, supporting transfers or acting as a balance aid.

Paraplegia

Paraplegia occurs when injury to the spinal cord affects the lower body, commonly involving reduced or absent movement and sensation in the legs.

Individuals with paraplegia may experience:

• wheelchair use;
• reduced lower limb sensation;
• difficulty accessing environments;
• fatigue associated with mobility;
• challenges completing certain physical tasks.

Assistance dogs may support participation through tasks such as:

• retrieving objects;
• carrying lightweight items;
• opening doors;
• assisting with environmental access;
• supporting independence in public environments.

The assistance dog complements, rather than replaces, mobility equipment such as wheelchairs.

Cerebral Palsy

Cerebral palsy is a group of neurological conditions affecting movement, posture and coordination due to differences or injury affecting the developing brain.

Cerebral palsy is highly variable. Individuals may experience differences in:

• muscle tone;
• coordination;
• balance;
• movement control;
• speech;
• fine motor skills.

Types of cerebral palsy may include:

• spastic cerebral palsy;
• dyskinetic cerebral palsy;
• ataxic cerebral palsy;
• mixed presentations.

Some people with cerebral palsy walk independently, while others use mobility equipment and require significant physical support.

Assistance dogs may support some individuals through tasks such as:

• retrieving items;
• assisting with routines;
• supporting independence;
• helping access environments.

Tasks involving physical assistance require careful assessment due to risks associated with:

• joint stress;
• balance;
• falls;
• animal workload;
• handler safety.

Mobility Assistance Dogs

Mobility assistance dogs are trained to support people whose physical disabilities affect movement, access or independence.

Potential tasks may include:

• retrieving dropped objects;
• carrying items;
• opening and closing accessible doors;
• operating accessible switches;
• fetching emergency items;
• assisting with routines;
• supporting environmental interaction.

The specific tasks should be linked to occupational goals.

For example:

A person may have difficulty picking up items from the floor due to reduced hand function. A trained retrieval task may support independence.

The recommendation is not based on the diagnosis but on the functional barrier and expected outcome.

Physical Assistance Versus Unsafe Assistance

A critical area of professional reasoning is understanding what assistance dogs can and cannot safely do.

Dogs may safely perform tasks involving:

• retrieval;
• carrying appropriately weighted items;
• environmental interaction;
• locating objects;
• trained response behaviours.

However, dogs should not generally be used as:

• wheelchairs;
• walking frames;
• transfer devices;
• weight-bearing supports;
• fall prevention equipment.

Tasks involving pulling, bracing or supporting human body weight may place both the person and animal at risk.

Considerations include:

• dog size;
• skeletal health;
• training;
• biomechanics;
• handler safety;
• veterinary assessment.

Animal welfare must always be prioritised.

Physical Disability and Fatigue

Many people with physical disabilities experience fatigue due to:

• increased energy requirements for movement;
• chronic pain;
• neurological conditions;
• muscle weakness;
• medical conditions.

An assistance dog may support energy conservation by reducing the physical effort required for certain tasks.

Examples may include:

• retrieving frequently used items;
• assisting with routines;
• reducing unnecessary movement demands.

However, professionals must also consider that caring for an assistance dog requires:

• feeding;
• grooming;
• exercise;
• veterinary care;
• ongoing training.

The partnership must reduce barriers rather than create additional physical demands.

Physical Disability and Assistive Technology

Assistance dogs should not be considered in isolation from other supports.

Many people with physical disabilities benefit from:

• wheelchairs;
• mobility aids;
• environmental modifications;
• adaptive equipment;
• home automation;
• personal assistance.

An assistance dog may complement these supports by addressing specific needs that technology or human assistance does not meet.

The occupational therapist must consider the least restrictive and most effective intervention for the individual.

Children and Young People with Physical Disabilities

Assistance dogs may be considered for children with physical disabilities; however, assessment requires careful consideration of development, growth and changing needs.

Important factors include:

• developmental stage;
• family capacity;
• school environment;
• future independence goals;
• physical changes over time.

A dog selected for a child must be appropriate for the child’s current and future needs while ensuring realistic expectations.

The partnership should support participation and autonomy rather than create unnecessary dependence.

Animal Welfare Considerations

Physical disability does not prevent someone from having an assistance dog; however, the physical demands placed on the animal must always be considered.

Assessment should consider:

• task intensity;
• frequency of tasks;
• dog size and structure;
• workload;
• rest periods;
• veterinary monitoring.

Dogs performing mobility-related tasks require particular attention because inappropriate physical demands can contribute to:

• musculoskeletal injury;
• pain;
• reduced working life;
• early retirement.

A successful assistance dog partnership protects both human and animal wellbeing.

Occupational Therapy Considerations

Occupational therapists assessing assistance dog suitability for physical disability must consider:

• the person’s occupational goals;
• functional limitations;
• environment;
• existing supports;
• assistive technology;
• animal capabilities.

Assessment should explore:

• What activities are restricted?
• What physical barriers exist?
• What tasks could an assistance dog realistically perform?
• Would the dog increase independence?
• Is the partnership sustainable?

Alternative interventions should also be considered, including:

• rehabilitation;
• assistive technology;
• environmental modifications;
• personal assistance.

An assistance dog should be recommended only when it provides meaningful additional benefit.

Key Practice Principle

Physical disabilities are diverse and affect people in different ways. An assistance dog should never be recommended solely because a person has a mobility impairment, spinal cord injury or physical diagnosis.

A successful physical assistance dog partnership is based on:

• functional assessment;
• appropriate task selection;
• realistic expectations;
• consideration of animal biomechanics;
• ongoing welfare monitoring;
• respect for the person’s autonomy.

The role of an assistance dog is not to replace mobility equipment, rehabilitation or human support. Its role is to provide trained assistance that enables greater independence, access and participation while maintaining the health and wellbeing of the animal.