Understanding IP Ratings
A clearer way to talk about Ottobock MPKs and water protection
A clearer way to talk about Ottobock MPKs and water protection
When it comes to microprocessor knees (MPKs), water exposure isn’t just a lifestyle consideration. It can directly affect a patient’s confidence, comfort, and daily independence. From a rainy walk outside to time spent near a pool, clinicians need clear, consistent language to set patient expectations and recommend the right device.
To make those conversations easier, we’re excited to share the latest updates to IP Ratings and our MPK portfolio. These updates are aligned better with international standards, reduce ambiguity, and give clinicians and patients the clarity they deserve.
Why IP Ratings Matter in Prosthetics
An IP rating (Ingress Protection) is an internationally recognized standard that indicates how well a device is protected against dust and water.
The first digit indicates dust and solid particle protection.
The second digit indicates water protection.
Understanding these ratings means clinicians can confidently match the right device to each patient’s real-world environment.
Ottobock MPKs at a Glance
Model | IP Rating | Water Protection Level | Overview |
Kenevo | IP54 | Water Resistant | Protected from dust and splashes of water. Not corrosion resistant. |
C-Leg 4 | IP68 | Fresh Waterproof | Protected from dirt, sand, and occasional submersion in fresh water (up to 3m for 1 hour). Not corrosion resistant. |
Genium | IP67 | Fresh Waterproof | Protected from dust, sand, and occasional submersion in fresh water (up to 1m for 30 minutes). Not corrosion resistant. |
X3 | IP68 | Fully Waterproof | Protected from dust, sand, and submersion in all water types (fresh, salt, chlorinated), as well as soap and bodily fluids. Corrosion resistant. |
X4 | IP68 | Fully Waterproof | Protected from dust, sand, and submersion in all water types, plus protection against jets of water. Corrosion resistant. |
Kenevo (IP54): A Major Update
This is the most significant shift in the portfolio. Kenevo now carries a clear IP54 rating, officially designating it as water resistant rather than weatherproof.
Protected from dust and splashes of water (e.g., rain, sink-side water, accidental spills).
Not intended for immersion or heavy water exposure.
Not corrosion resistant.
Why it matters: Previously, Kenevo’s water capabilities were often described in less standardized terms, which could lead to patient confusion or inconsistent clinician guidance. This new IP54 rating provides clarity and protection for both clinicians and patients, ensuring appropriate expectations are set for users in lower activity levels or those transitioning to microprocessor technology for the first time.
Electronics are protected from dirt, sand, dust-tight, and occasional submersion in fresh water (up to 3 minuites for 1hour).
Ideal for moderate activity users who may encounter water (e.g., rain, poolside environments).
Not corrosion resistant.
Electronics are protected from dirt, sand, dust-tight, and occasional submersion in fresh water (up to 3 minuites for 1hour).
Ideal for moderate activity users who may encounter water (e.g., rain, poolside environments).
Not corrosion resistant.
Electronics are protected from dirt, sand, dust-tight, and occasional submersion in fresh water (up to 1 minute for 30 minutes).
Not corrosion resistant.
Ideal for everyday mobility with light water exposure.
Electronics are protected from dirt, sand, dust-tight, and occasional submersion in fresh water (up to 1 minute for 30 minutes).
Not corrosion resistant.
Ideal for everyday mobility with light water exposure.
Fully waterproof (Fresh, Salt, Chlorinated Water, soap, bodily fluids) + corrosion resistant.
Electronics are protected from dust, sand, dirt, and full submersion in all water types (up to 3 minutes for 1 hour).
Protected against jets of water.
Mechanical components are fully corrosion resistant against all water types, soap, and bodily fluids.
Best suited for patients with high activity levels and diverse daily environments.
Fully waterproof (Fresh, Salt, Chlorinated Water, soap, bodily fluids) + corrosion resistant.
Electronics are protected from dust, sand, dirt, and full submersion in all water types (up to 3 minutes for 1 hour).
Protected against jets of water.
Mechanical components are fully corrosion resistant against all water types, soap, and bodily fluids.
Best suited for patients with high activity levels and diverse daily environments.
C-Leg (IP68) Fresh Waterproof
Genium (IP67) Fresh Waterproof
Genium X4 (IP68)
Why This Matters in the Clinic
Water exposure can be a critical decision-making factor in prosthetic selection. With this clarified IP rating structure, clinicians can:
Set clear expectations for each patient based on their activity level.
Reduce the risk of misuse or misunderstanding around device capabilities.
Confidently match technology to real-world environments.
For example:
Kenevo’s IP54 rating gives lower-activity users appropriate coverage for daily life without overpromising water performance.
C-Leg and Genium provide reliable protection for moderate activity users with occasional exposure.
Genium X4 is the best fit for active users who regularly encounter water (fresh, salt, chlorinated) and benefit from the added durability and protection afforded by corrosion resistance.
Pro Tip: Using language like “water resistant” vs. “waterproof” helps patients clearly understand what’s possible (and what’s not).