At Health Plus PT, our Stiff Knee Relief program is dedicated to helping patients restore mobility, reduce discomfort, and improve knee function. Addressing knee stiffness requires a focused, patient-centered approach, and our specialized therapy is designed to target underlying causes using evidence-based techniques, personalized exercises, and advanced treatment methods.
Stiff knee after sitting | Causes

Bursitis
Bursitis is the inflammation of a joint structure called the bursa.
Bursae are small, fluid-filled sacs that reduce friction in joints during movement. The knee contains several bursae that help with smooth motion.
Overuse is the most common cause of bursitis. Once inflamed, the knee may feel stiff, especially after sitting for a long time.
Rest is often the first step in treatment. Physical therapy can also help relieve symptoms and restore movement.
Osteoarthritis
Osteoarthritis is a common type of arthritis that affects the knee.
This condition happens when the cartilage in the knee wears down naturally with age. Knee injuries can also increase the risk of osteoarthritis.
Stiffness is a typical symptom. It often gets worse after sitting for extended periods.
Physical therapy can slow progression, reduce stiffness, and improve joint function.
Rheumatoid Arthritis
Rheumatoid arthritis is another condition that can cause knee stiffness after sitting.
Unlike osteoarthritis, rheumatoid arthritis is not caused by wear and tear. Instead, it is an autoimmune condition where the body attacks its own joint tissue. This condition often affects multiple joints at the same time.
Early diagnosis and targeted treatment are key to reducing pain and stiffness.
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