Preprosthetic exercise program

These exercises are appropriate for people with either transtibial or transfemoral amputations. The person should always remove the prosthesis to exercise. Prostheses are designed to distribute the pressures encountered in erect weight-bearing, not those encountered in other activities. For example, someone with a transtibial amputation who wears the prosthesis while performing knee extensor exercises, like straight leg raises or short arc quads, can experience dangerous pressures on the anterior distal tibia.

The exercises illustrated below have existed in the medical literature for many years (Eisert & Tester, 1954). Their focus on the hip extensors and abductors is validated by research (Powers, Boyd, Fontaine, & Perry, 1996) that shows how strength in these muscles correlates positively with stride analysis variables like walking velocity, cadence, and stride length in a group of 22 subjects with transtibial amputations.

The first version of the exercises contains a commentary that therapists will find useful. The second version is written in language that permits its use as a home program.


Prone-lying for 30 minutes twice a day prevents hip flexor tightness. While in the prone position, the person can also perform either or both active hip extension and thoracic extension exercises.

prone-lying

The person can use a rolled towel, or can pad a small stool or a phone book with a pillow, then perform a series of exercises that provide modified weight-bearing. For instance, the person can strengthen the hip extensors by "bridging," using the residual limb to lift the pelvis from the supporting surface. People with amputations should perform this exercise bilaterally.

bridging

The person can strengthen the hip abductors by lying on the amputated limb, then "bridging" to lift the pelvis from the supporting surface. This rather strenuous exercise employs the gluteus medius, a muscle that is important for gait, in a range that is similar to that during stance phase. To avoid substitution by the tensor fascia lata, the person must neither flex the involved hip nor roll the pelvis backward. People with amputations should perform this exercise, like the hip extensor exercise, bilaterally.

sidelying bridge

Patients with transfemoral amputations can strengthen the residual hip adductors by lying on the side opposite that of the amputation. The involved limb rests on the padded stool while the bottom (uninvolved) hip is flexed so that it rests comfortably in front of the stool. Strengthening of the residual adductor muscle group compensates for its decreased mass and the consequent risk of hip abductor tightness.

adductor exercise

Partial sit-ups and other abdominal strengthening exercises are appropriate but may be difficult if the lower limbs' reduced weight cannot stabilize the pelvis. The patient should not wear the prosthesis for stabilization but should find other stabilization, including help from another person.

The amputee can perform conventional sit-ups, or alternatives like the exercise pictured here, in which a helper stabilizes the amputated limb while the person simultaneously flexes and rotates the trunk toward the amputated limb. The exercise requires abdominal activity in combination with hip flexion, adduction, and internal rotation. This hip muscle activity helps balance and prevent the abductor and external rotator tightness that is common among people with transfemoral amputations.

abdominal exercise

UNIVERSITY OF OKLAHOMA
DEPARTMENT OF PHYSICAL THERAPY

HOME EXERCISE PROGRAM
FOR PEOPLE WITH LOWER LIMB AMPUTATIONS

These exercises are appropriate for persons with amputations either above or below the knee. Remove your prosthesis to do these exercises. Your prosthesis is designed for walking. Exercising with it might put too much pressure on parts of your leg and even cause skin breakdown.

Lying on your stomach for 30 minutes twice a day will keep the muscles in front of your thigh from getting tight. While lying this way, you can exercise your leg by lifting it backwards. You can also strengthen your back muscles by lifting your head, or raising your arms. Check with your therapist before you do these exercises to make sure they won't cause other problems.

prone-lying

You can pad a stool or phone book with a towel or pillow and then do leg exercises which make you lift and control your body weight. This picture shows how you can strengthen the muscles on the back of your hip by "bridging" with the amputated limb. You can also bridge with the non-amputated limb.

bridging

You can also turn to the side of the amputated limb, and "bridge" using muscles on the side of your hip. If done correctly, this exercise is an excellent way to learn how to control the prosthesis. However, you have to lie on your side without rolling, and keep your leg in a straight line with your upper body. If you let your leg come forward or let your pelvis and hips roll backward, you will be using the wrong muscles and developing bad habits for walking.

sidelying bridge

Persons with transfemoral (above-knee) amputations should also lie on the non-amputated side, then rest the amputated leg on a stool as this picture demonstrates. You can strengthen the muscles on the inside of your thigh by pulling into the stool with the top leg, and lifting the pelvis up from the bed or couch.

adductor exercise

You can strengthen stomach muscles by doing partial sit-ups (sitting up only until your shoulder blades come off the bed). These may be difficult unless someone holds your legs for you.

Alternatively, you can do the exercise pictured here, in which someone holds your amputated limb while you simultaneously sit and turn your trunk toward the side of the amputation. This exercise strengthens your stomach and hip muscles at the same time.

abdominal exercise

Patients may also benefit from strengthening other muscles. Powers and his colleagues (1996) found that knee extensor strength correlated positively with stride length when a group of patients with transtibial amputations and vascular disease attempted to walk more quickly than their freely chosen speed. Similarly, Salsich and Mueller (1997) studied 30 subjects with diabetes mellitus (DM) and transmetatarsal amputation (TMA). They sought correlations among measurements of muscle lower limb muscle strength, achieved using a hand-held dynamomenter, and functional measures that included the Functional Reach Test, Physical Performance Test, Sickness Impact Profile (SIP), and walking speed.

They concluded that "rehabilitation should focus on strengthening hip and knee extensors and flexors to improve function." They noted reasonable correlations between walking speed and the functional tests, and suggested that "the simple measure of walking speed is a useful functional test in the clinic."


References:

Eisert, O., & Tester, O.W. (1954). Dynamic exercises for lower extremity amputees. Archives of Physical Medicine and Rehabilitation, 35, 695-704.

Powers, C.M., Boyd, L.A., Fontaine, C.A., & Perry, J. (1996). The influence of lower-extremity muscle force on gait characteristics in individuals with below-knee amputations secondary to vascular disease. Physical Therapy, 76, 369-377.

Salsich GB, & Mueller MJ (1997). Relationships between measures of function, strength and walking speed in patients with diabetes and transmetatarsal amputation. Clinical Rehabilitation, 11, 60-7.


Last updated 5-25-00 ©Dave Thompson PT