AK (Above knee)
What is an above-knee (AK) prosthesis?
An above-knee, or transfemoral, prosthesis replaces the limb when the amputation is through the thigh. It includes a socket, a prosthetic knee, a pylon, and a foot. Because the biological knee is gone, the prosthetic knee must be stable in stance and able to flex for sitting and swing.
Why is an above-knee (AK) prosthesis used?
Transfemoral amputation is used when disease or injury extends above the knee or the knee cannot be preserved. Walking takes more energy than with a below-knee limb, and balance training is essential. Knee options range from simple mechanical knees to microprocessor knees, chosen for safety, terrain, and the patient’s strength and cognition, not for novelty.
What are the benefits of an above-knee (AK) prosthesis?
- Restores the ability to stand and walk when the knee cannot be saved
- Prosthetic knee can be specified for stability, activity, or both
- Socket design can use the remaining thigh for control and, in some designs, ischial support
- Allows sitting, transfers, and community mobility with rehabilitation
Personalized Solutions. Greater Mobility.
Don’t let mobility challenges hold you back. Our experienced team provides custom orthotic and prosthetic solutions designed around your needs, comfort, and goals.
