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An often-untreated area: the skin above the knee tends to sag and is difficult to improve with exercise or cosmetics.
How it works: focused ultrasound stimulates new collagen in the deep layers to redensify and tighten the skin of the knee.
No surgery: no incisions or scars; no downtime required.
Results: progressive and variable depending on skin quality and the degree of sagging for each person.
The knee area often goes unnoticed until the skin covering it begins to sag. It's an area that exercise barely affects, and many people notice it especially when wearing skirts or shorts. HIFU for knees is one of the few aesthetic medicine options designed to firm this specific area without surgery.
Why the skin on the knee sags
Above the kneecap, the skin is mobile, and over time, collagen loss causes it to fold and hang slightly. Weight changes and age accentuate this sagging. As with other areas of the body, it's not so much about fat as it is about skin that has lost its ability to retract.
What HIFU brings to the knee
Focused ultrasound delivers controlled heat to the deep layers of the knee's skin. This stimulus activates the formation of collagen and elastin, so the tissue gradually redensifies in the following weeks, and the skin tends to look firmer and less saggy.
As a non-invasive technique, it fits well in a delicate area like this: it works on firmness without scars and without requiring a break from daily activities.
When it makes sense
HIFU is reasonable when knee sagging is mild or moderate. If the excess skin is significant, it's important to be realistic: focused ultrasound has a limited reach and is not equivalent to surgery. During the assessment, we will clearly tell you what improvement is reasonable to expect in your case.
The session and recovery
The treatment is performed in the clinic. During application, you may feel heat and some occasional stinging as the deep layers are reached. It does not require general anesthesia. Afterward, the area may be somewhat red or sensitive for a few hours, which usually subsides without further issues.
There is no downtime. Results appear gradually as collagen matures, and sometimes a repeat session is recommended after some time.
How we approach it at Santé
At Santé, we first assess the skin of your knees and the degree of sagging before proposing a plan. Our medical team decides if HIFU is the best option for this area or if it should be integrated into a broader body firming protocol. All treatments are performed by board-certified professionals.
We serve patients in Spanish, English, Portuguese, and Russian at Avenida Diagonal 384, in the Eixample district of Barcelona. The initial assessment consultation allows us to explain, without guaranteed promises, what result is reasonable to expect.
Frequently Asked Questions
Does HIFU for knees leave scars?
No. It is a non-invasive treatment that works under the skin without incisions, so it leaves no scars.
How many sessions are needed?
It depends on the degree of sagging and your skin's response. We will specify this during the medical assessment.
Is it uncomfortable?
You may feel warmth and some occasional stinging during the session, generally well-tolerated, with no need for subsequent rest.
When are results noticeable?
Gradually over the following weeks, as new collagen forms. Results may vary from person to person.
