For those living with limb loss, prosthetics offer a pathway to recovering mobility and independence. One significant aspect of the prosthetic design is the suspension system, which is crucial in providing the wearer with comfort, stability, and functionality. From traditional straps and harnesses to leading technology like vacuum systems and osseointegration, the world of prosthetic suspensions is diverse. The following outlines suspensions for prosthetic limbs, emphasizing their features, benefits, and considerations.
- Strap and Harness Systems:
- Strap and harness suspensions are among the oldest and most traditional methods to secure prosthetic limbs.
- This system involves straps or belts that wrap around the residual limb, providing support and securing the prosthetic.
- While simple and cost-effective, strap and harness systems may cause discomfort, skin irritation, and slippage, especially during vigorous activity.
- Suction Suspension:
- Using airtight sockets and vacuum seals to create force, suction suspension holds the prosthetic limb securely against the residual limb.
- This method offers improved stability, reduced pistoning (up-and-down movement), and enhanced proprioception.
- Suction systems are suitable for a wide range of activity levels and are particularly favored by active individuals.
- Locking or Pin Suspension:
- This system involves the use of pins or locking mechanisms that interfaces with a corresponding receptacle in the prosthetic socket.
- Providing a secure attachment, this method prevents rotation or slippage of the prosthetic limb.
- Locking suspensions are often preferred for individuals with high activity levels or those who require precise control over their prosthetic movements.
- Vacuum-Assisted Suspension:
- Combining the benefits of suction suspension with active vacuum technology, a vacuum pump removes air from the socket, creating a snug and secure fit while enhancing circulation and reducing perspiration.
- This system offers comfort, stability, and control, making it suitable for various activities and environments.
- Osseointegration:
- An advanced surgical procedure that involves implanting a metal fixture into the residual bone, the prosthetic limb is then attached directly to the implant, eliminating the need for a socket or traditional suspension system.
- Osseointegration offers unequalled freedom of movement, enhanced sensory feedback, and decreased discomfort compared to socket-based prosthetics.
The suspension system chosen for a prosthetic limb is tailored to the individual and depends on factors such as the wearer’s anatomy, activity level, and personal preferences. While traditional strap and harness systems remain in use, the advancements in technology have led to improved comfort, stability, and mobility for individuals with limb loss. By understanding the options available, prosthetic users can work with their clinicians to select the suspension system that best meets their needs and enhances their quality of life.
To discuss prosthetic suspensions with an expert practitioner, contact us today to schedule an appointment.