Patella Alta in hEDS

If you live with hypermobile Ehlers–Danlos syndrome (hEDS), you already know that your joints tend to have a mind of their own. They bend too far, slip when they shouldn’t, and often leave you dealing with pain or instability. One joint that frequently gets caught up in the chaos is the knee—and more specifically, the patella, or kneecap.

Among the knee issues seen in hEDS, patella alta (a high‑riding kneecap) is surprisingly common. But what does that actually mean, and how does it feel? Let’s break it down.

What Is Patella Alta?

In a typical knee, the patella sits snugly in a groove at the end of the thigh bone. In patella alta, the kneecap sits higher than normal, which changes how it tracks when you bend or straighten your leg.

For people with hEDS, this often isn’t just an anatomical quirk—it’s a direct result of ligament laxity, muscle imbalance, and joint instability, all of which are hallmarks of the condition.

These are the things someone else might notice—or a clinician might pick up on

during an exam.

1. A visibly high kneecap

The patella sits higher on the front of the knee than expected. Some people describe their knee as looking “longer” above the kneecap.

2. Excessive patellar mobility

Because the connective tissue is lax, the kneecap may glide more than usual when gently pushed side‑to‑side or up‑and‑down.

3. Recurrent patellar subluxations

This is a big one in hEDS. The kneecap may partially slip out of place during everyday activities like walking, squatting, or climbing stairs.

4. Clicking, popping, or grinding

These sounds often come from the kneecap not tracking smoothly in its groove.

These are the sensations and struggles that tend to show up in daily life.

1. Pain at the front of the knee

Often worse with:

• Stairs

• Squatting

• Standing up from sitting

• Long walks

This pain comes from the patella not gliding smoothly and irritating the cartilage underneath.

2. A feeling of instability

Many describe their knee as “giving way,” “wobbly,” or “unreliable.” This is classic in hEDS, where joint stability is already compromised.

3. Muscle fatigue

Your quadriceps and hip muscles work overtime to compensate for the unstable kneecap, which can lead to aching or burning after activity.

4. Swelling after use

Even mild misalignment can irritate the joint enough to cause puffiness or inflammation.

5. Difficulty with certain movements

Running, jumping, kneeling, or deep bending may feel painful or risky.

Why Patella Alta Happens More in hEDS

hEDS affects the connective tissue that supports your joints. When that tissue is lax or stretchy, the structures that normally hold the kneecap in place—ligaments, tendons, and soft tissue—don’t provide enough stability.

This leads to:

• A patella that sits higher

• A patella that moves too freely

• A patella that doesn’t track smoothly

It’s a perfect storm for patellofemoral problems.

If patella alta goes unaddressed, it can contribute to:

Patellofemoral pain syndrome (PFPS)

Chronic irritation from abnormal

tracking.

Chondromalacia patellae

Softening or wear of the cartilage behind the kneecap.

Compensatory gait changes

Your body adapts to avoid pain, which can lead to hip, ankle, or lower‑back discomfort.

Patella alta in hEDS isn’t just a structural quirk—it’s part of a bigger picture of joint instability and connective‑tissue laxity. Understanding the signs and symptoms can help you recognize what’s going on in your knees and advocate for the right kind of support.

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