Patient question
My knee feels too tight to sit back on my heels. Can it bend fully again?
Dr. Pablo GelberOrthopaedic Knee Surgeon
Quick answer
Sitting back on the heels needs the deepest bend the knee makes, so it is often the first movement lost with swelling, arthritis, a meniscus tear at the back or stiffness after surgery. Many people regain it gradually with the right exercises, says Dr. Pablo Gelber, knee surgeon at Aman Hospital in Doha, Qatar.
Why full bending goes first
Walking needs about 60 to 70 degrees of knee bend and stairs a little more, but sitting on the heels needs the knee to fold completely, with the calf pressed against the thigh. Any extra fluid, a thickened joint lining, a tear at the back of the meniscus or a tight quadriceps uses up the space that full bending requires.
In Qatar this matters in daily life: in the majlis, at family meals on the floor and in prayer, where sitting between prostrations and for tashahhud asks for this position several times a day.
Common causes
- Knee osteoarthritis, often with a feeling of fullness and stiffness after rest
- A tear in the back of the meniscus, with a pinching pain deep at the back or inner side
- A Baker's cyst behind the knee, which fills the space when you bend
- Stiffness after ACL reconstruction, meniscus surgery or a knee replacement
- Tight quadriceps after injury or long periods of inactivity
Regaining the bend gently
Warm the knee first with a few minutes on a stationary bike or a warm shower. Then do heel slides lying on your back, sliding the heel towards your bottom and holding for a few seconds. Kneel on a soft surface and slowly sit back towards your heels, with a cushion between the calves and thighs, reducing its size over weeks. Quadriceps stretches standing or lying on your front help too.
Avoid forcing through sharp pain. While you work on it, some patients adapt how they sit in prayer or use a low stool or chair; how to adapt prayer is a matter to discuss with a scholar, and your doctor can advise what the knee tolerates.
When to be seen in Doha
Book an assessment if the knee is swollen, if bending has been getting steadily worse, if deep bending causes a sharp catching pain, or if you are not regaining movement after surgery as expected.
At Aman Hospital, Dr. Gelber measures the knee's range, looks for fluid, a Baker's cyst or a meniscus problem, and orders an X-ray or MRI where it will guide treatment. Advanced arthritis may limit full bending permanently, and he will be honest about what is realistic.
Frequently asked questions
Will I ever sit on my heels again after a knee replacement?
Many people achieve good bending after a replacement, but sitting fully back on the heels is often difficult. Kneeling and floor sitting should be discussed with your surgeon before the operation.
Is it harmful to keep trying to sit on my heels?
Gentle, gradual practice is usually fine. If it causes swelling or sharp pain afterwards, ease back and have it checked.
Why does the back of my knee feel full when I bend?
A feeling of fullness behind the knee on bending often means fluid in the joint or a Baker's cyst. Both usually reflect a problem inside the knee that can be treated.
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