Knees - Microprocessor | Lower Limb Prosthetics | Prosthetics

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Microprocessor Knees

In 1997, the C-Leg® was introduced to the world as a powerful alternative choice to mechanical knees. With more than 100,000 fittings and more than 25 years of practical experience and research, Ottobock has created a family of unmatched microprocessor knees developed to meet the specific needs of people with different lifestyles.

With the family of Ottobock knees, you are able to make informed clinical decisions and deliver a knee chosen specifically for the individual’s level of function, ability, and activities.

Ottobock Microprocessor Knee

	Kenevo	C-Leg 4	Genium	X3	X4
K-Level	K2, low-K3***	K2 - K4	K3, K4	K3, K4	K3, K4
IP Rating	IP 22	IP 68	IP 67	IP 68 + corrosion resistant	IP 68 + corrosion resistant
Stance control	Locked or intuitive stance	Intuitive or deliberate stance	Intuitive or deliberate stance	Intuitive or deliberate stance	Intuitive or deliberate stance
Real-time swing control	√	√	√	√	√
Stumble recovery	√	√	√	√	√
Clinically-proven OPG (optimized physiological gait)			√	OPG 2.0	OPG 3.0
Running capacity			Walk to run	Running mode	Running mode
Battery life	Approx. 1 day*	Approx. 2 days*	Approx. 5 days*	Approx. 5 days*	Approx. 5 days*
Corrosion resistant				√	√
Maximum knee flexion angle	124°	130°	135°	135°	135°
Weight limit	330 lbs (150 kg)	300 lbs (136 kg)	330 lbs (150 kg)	330 lbs (150 kg)	330 lbs (150 kg)
User app available	√	√	√	√	√
Moisture protection	IP 22, electronics are protected from dripping water. Mechanical components are not corrosion resistant	IP 68, electronics are protected from dust, sand, dirt and occasional submersion in fresh water (up to 3m for 1 hour). Mechanical components are not corrosion resistant	IP 67, electronics are protected from dust, sand, dirt and occasional submersion in fresh water (up to 1m for 30 min). Mechanical components are not corrosion resistant	IP 68, electronics are fully protected from dust, sand, dirt and full submersion in fresh, salt and chlorinated water (up to 3m for 1 hour). Mechanical components are fully corrosion resistant against all water types	IP 68, electronics are fully protected from dust, sand, dirt and full submersion in fresh, salt and chlorinated water (up to 3m for 1 hour). Mechanical components are fully corrosion resistant against all water types
Service requirement	36th month, condition-based**	36th month, condition-based**	24th month	12th and 24th month	24th month
Daily charging recommended Service may occur sooner if the knee reaches specific condition-based thresholds. **More specifically, for patients who walk with speeds of up to 1.9 mph and up to ½ mile outside the house per day.