A walking frame, also known as a walker or walking aid, is a device that assists the human body in supporting weight, maintaining balance, and walking.It is mainly suitable for people with weakened lower limb muscle strength, poor balance, or limited mobility,such as those with lower limb dysfunction and frail elderly individuals.

Walking frames usually feature a frame structure, mostly made of aluminum alloy and other materials, with multiple support points and good stability.Structurally, they are mainly divided into frame-type walkers and wheeled walkers. Frame-type walkers offer better stability,while wheeled walkers are more flexible in movement.The height must be adjusted appropriately during use, a specific gait sequence must be followed, and they are not suitable for use on stairs.

A walker is an important rehabilitation assistive device for supporting body weight, maintaining balance, and walking.It is suitable for people with reduced lower limb muscle strength, balance disorders, postoperative rehabilitation, and the elderly.According to differences in structure, function, and usage,walkers are mainly classified into the following categories:

Walking frames are mainly divided into non-wheeled and wheeled types .Based on structural characteristics, they can be divided into two major categories: frame-type walkers and wheeled walkers.A frame-type walker forms a three-sided frame at the front, rear, left, and right sides,usually without casters, providing support through handles and legs, with good stability.Wheeled walkers are equipped with casters; the walker remains on the ground while walking, making it easy to push and more flexible .

Frame-type walkers can be subdivided into four-legged frame walkers, differential (reciprocal) frame walkers, and stair/stand-up frame walkers.Four-legged frame walkers are suitable for users with intact upper limb function and good muscle strength, but unilateral lower limb weakness or dysfunction.Differential frame walkers have a hinged frame structure that allows alternating movement of both sides,making them the closest to normal walking speed among walkers.Stair/stand-up frame walkers are designed with low support handrails,which assist with standing up and sitting down .Front-wheeled walkers are used for users with weak upper limb strength who have difficulty lifting the walker unilaterally or fully.Underarm-supported walkers support body weight through both armpits for walking, suitable for users with poor upper limb strength .

Wheeled walkers can be divided into two-wheeled, three-wheeled, four-wheeled and other types.Two-wheeled walkers have fixed front casters with good directional stability,suitable for users with insufficient upper limb strength who cannot lift the walker to move forward .Three-wheeled walkers are equipped with three fixed or swinging casters .Some four-wheeled walkers are equipped with seats, hand brakes, and various auxiliary support functions.Wheeled walkers with resting seats should have a parking brake integrated with the service brake.According to usage scenarios, wheeled walkers are also divided into indoor and outdoor types .

A walker mainly consists of a frame, two handles, and four leg rods; wheeled walkers also include two or four wheels and braking devices.The frame is mostly made of aluminum alloy and polymer materials .The ends of the leg rods are equipped with non-slip rubber tips to increase friction.The structural design must ensure tight and firm connections, and moving parts must be stable and reliable.

Stability varies among different types of walkers.Generally, stability in descending order is:fixed frame walker > folding frame walker > two-wheeled walker > four-wheeled walker > differential (reciprocal) frame walker .

Frame-type walkers have a large support area and good stability, making them more suitable for users with poor balance control.Wheeled walkers are flexible and fast-moving but require relatively better balance from the user .

Walking frames are mainly suitable for people with severe lower limb impairment, poor balance,and who need assistance to support body weight and maintain balance .Specific users include those undergoing initial walking training,individuals practicing before using crutches,and those with lower limb weakness, bilateral paralysis, hemiplegia, or amputation.Elderly people with slow movement or balance problems,as well as very elderly individuals and orthopedic postoperative patients(such as those getting out of bed early after hip or knee replacement)also commonly use walking frames .

Different types of walking frames should be matched according to upper limb muscle strength, balance ability, and usage scenarios .Users with intact upper limb function and good muscle strength but unilateral lower limb weakness or dysfunction are suitable for frame-type walkers .Users with weak upper limb strength who have difficulty lifting the walker unilaterally or fully are suitable for front-wheeled or wheeled walkers .Users with poor standing balance and lower limb weakness are suitable for reciprocal or fixed walkers .Elderly people with severe lower limb dysfunction and poor balance should choose frame-type walkers,while those with mild bilateral lower limb dysfunction or slightly poor balance but sufficient hand support strength are suitable for wheeled walkers.

Selection According to User’s Physical Condition

Elderly people with severe lower limb dysfunction, poor balance, unilateral lower limb weakness, reduced general or bilateral lower limb strength, or poor coordination are suitable for frame-type walkers .

Frame-type walkers are suitable for users with intact upper limb function and good muscle strength but unilateral lower limb weakness or dysfunction ,as well as patients with poor standing balance and lower limb weakness .

Elderly people with mild bilateral lower limb dysfunction or slightly poor balance but sufficient hand support strength to maintain continuous walking are suitable for wheeled walkers .Wheeled walkers are suitable for users with poor upper limb strength who have difficulty lifting the walker or those with weak upper limb strength who cannot lift the walker unilaterally or fully .

Comparison of Characteristics and Applicable Scenarios of Different Walkers

Frame-type walkers have good stability, while wheeled walkers are more flexible and more suitable for outdoor environments.Fixed walkers are used to reduce load on one lower limb; reciprocal walkers are suitable for patients with poor standing balance and lower limb weakness;front-wheeled walkers are used for users with weak upper limb strength who have difficulty lifting the walker unilaterally or fully .

The stability of commonly used walkers in ascending order is:differential frame walker → four-wheeled walker → two-wheeled walker → folding frame walker → fixed frame walker .