Physiosolution Clinical Team · 2026-11-12 · 2 min read
The kneecap is usually involved
Sitting with the knee bent for a long time increases pressure between the kneecap and the thigh bone. In people with patellofemoral pain, this pressure irritates the area behind the kneecap. Physiotherapists sometimes call this the "moviegoer's sign".
Common causes
Patellofemoral pain. Common in younger and active adults. Pain around or behind the kneecap, also worse on stairs and squatting.
Knee osteoarthritis. Stiffness after sitting, easing once you've walked for a few minutes, is typical of arthritis.
After knee surgery or injury. Stiffness after sitting is common during recovery.
Simple changes
- stretch your legs out or stand up every 30 minutes
- choose aisle seats in cinemas and flights so you can straighten the leg
- avoid sitting with the knee sharply bent for long periods
- walk for a minute or two before standing up from a long sit
Exercises that help
Strengthening the quadriceps and hip muscles helps the kneecap track better and reduces pressure. Useful exercises include:
Our knee exercises section has step-by-step guides.
When to get it checked
If knee pain after sitting has lasted more than a few weeks, is getting worse or comes with swelling, catching or giving way, get it assessed.
Why it often affects younger women more
Patellofemoral pain is more common in adolescent girls and young women than in men of the same age. Differences in hip width, muscle strength and how the knee is controlled during movement are thought to play a part. It isn't a sign of damage or early arthritis, and it responds to the same strength-based approach.
For many young women, hip strength is the missing piece. When the hip muscles are weak, the thigh can roll inwards during stairs and squats, changing how the kneecap tracks. Side-lying leg lifts, clamshells and side steps with a band often make a noticeable difference alongside quadriceps work.
Footwear and activity changes matter too. Long periods in flat, unsupportive shoes, a sudden increase in stairs at a new office, or starting a dance or HIIT class can all tip a knee over the edge. Adjusting the load while building strength usually settles it.
Outlook
Patellofemoral pain responds well to strengthening, usually improving over six to twelve weeks. For young adults, see our article on knee pain in young adults.
Talk to a physiotherapist
Clinic in Indirapuram, home visits across Indirapuram, Vaishali, Vasundhara, Noida and Ghaziabad. Slots confirmed on call or WhatsApp.