Definitions

Lower Extremity Prosthetic or Artificial Limb

An artificial device to replace or augment a missing or impaired part of the lower body.

Partial Foot Prostheses

The partial foot amputation is the most common type in the united states. Patients who undergo amputation of the toes or a disarticulation of the metatarsophelangeal joint will use devices such as insoles or toe fillers. These devices tend to be made of foams with varying degrees of compliance to fill the shoe and redistribute pressure. These devices do tend to effectively redistribute pressure away from the sensitive amputation site to the surrounding intact skin.

Trans-Metatarsal Prostheses

The transmetatarsal amputation requires more robust functional bracing like AFOs or prosthesis incorporating an extension to the prosthesis that encompasses the lower leg and remaining foot.

Trans-Tibial or Below Knee Prostheses

The most common socket used is some form of the patellar-Tendon-Bearing design where all of the weight of the amputee is carried through the stump. The socket totally encloses the stump and usually contains a “soft” liner to provide a cushioning effect, although many amputees prefer a “hard” socket because it is considered to be cooler. The prosthesis may be held in place by any of a number of ways: by a cuff above the knee cap, by the shape of the brim of the socket, or by suction between the socket and amputee produced by an elastic sleeve or flexible inner liner of silicone and attached mechanically to the prosthesis.

Trans-Femoral or Above Knee Prostheses

Most sockets for above-knee prostheses cover the entire stump. There are several designs available to take maximum advantage of the muscles in the stump of the individual amputee for control of the prosthesis and for transferring the weight of the amputee to the floor. For most patients, the prosthesis can be held in place by suction or vacuum provided by a close fit between stump and socket. With this type of prosthesis, a knee and ankle system are required.

Hip Disarticulation / Hemipelvicomy Prostheses

Hip disarticulation is the surgical removal of the entire lower limb by transection through the hip joint including a portion of the ilium. The prosthetist must detail the socket closely around the anterior pubic bone, the posterior sacrum, the ischial tuberosity, and the ileac crest. With this type of prosthesis, a knee and ankle system are required.

Bilateral Prostheses

Bilateral refers to both limbs being amputated. For bilateral leg amputees, rehabilitation should be emphasized as early as possible to maximize ambulatory potential and to help alleviate possible gait or motion control problems associated with contracture (the tightening of muscles around the residual joint, which can restrict an amputee’s range of motion).

PFFD Prostheses (Proximal Femoral Focal Deficiency)

The most apparent functional deficit in PFFD is the shortened limb. A less obvious one is the difficulty with hip function and stability. We can provide a prosthesis for this type of surgery.

Upper Extremity Prosthesis

An artificial device to replace or augment a missing or impaired part of the upper body.  There are several different types available.


Body Powered

Operated by a heavy duty harness system that has a long lifespan and is less expensive and lighter weight than the myoelectric devices.


Myoelectric

Powered by an external battery system and controlled by EMG signals generated during muscle contractions.  Cosmetically, it is more pleasing and it can increase a persons grip force as well as range of motion.


Passive / Cosmetic

Provides simple aid in balancing, carrying and is similar in appearance to the non affected arm.


Hybrid

A combination of body powered and myoelectric powered so it is lighter weight than the full electric and increased range of motion and grip than the body powered.

Recreational

Customized for a specific function or activity.