KNEE ARTHRITIS
Understanding Knee Arthritis: Causes and Common Types
The most frequent cause of chronic knee pain and physical disability is arthritis. While there are dozens of variations of this condition, the vast majority of knee issues stem from three specific types. Understanding which one is affecting you is the first step toward effective treatment.
1. Osteoarthritis (The “Wear-and-Tear” Arthritis)
Osteoarthritis (OA) is the most common form of knee arthritis. It is a degenerative condition that typically develops in patients aged 50 and older, though sports injuries or genetics can cause it to appear in younger adults.
How it Works: The protective articular cartilage that cushions the knee bones gradually softens and wears away.
The Result: Without the “slippery” cartilage, bones begin to rub directly against one another. This friction causes chronic pain, stiffness, and a grinding sensation (crepitus).
Bone Spurs: As the body attempts to compensate for the lost cartilage, it may grow extra bone on the edges of the joint. These are called osteophytes (bone spurs) and can further limit your range of motion.
2. Rheumatoid Arthritis (Inflammatory Arthritis)
Unlike osteoarthritis, Rheumatoid Arthritis (RA) is an autoimmune disease where the body’s immune system mistakenly attacks its own healthy tissues.
How it Works: The immune system targets the synovial membrane (the lining of the joint). This causes the membrane to become painfully inflamed and thickened.
The Result: Chronic inflammation eventually destroys the underlying cartilage and can even damage the bone itself. RA often affects both knees simultaneously and is characterized by significant morning stiffness and swelling.
3. Post-Traumatic Arthritis
This form of arthritis develops years after a specific physical injury to the knee. Even if an injury was treated successfully at the time, the “trauma” can change the mechanics of the joint forever.
Common Triggers: Bone fractures (especially those involving the joint surface) or severe ligament tears (like an ACL tear) can lead to this condition.
The Result: These injuries can damage the articular cartilage or cause the bones to wear unevenly. Over time, this leads to pain and restricted function, mirroring the symptoms of osteoarthritis but following a clear injury timeline.
Additional Contributing Factors
Beyond the three main types, several factors can accelerate the development or severity of knee arthritis:
Weight & Load: Because the knee is a weight-bearing joint, excess body weight increases the pressure on the cartilage. Every pound of body weight can feel like 3 to 4 pounds of pressure on the knee when walking.
Genetics: Some individuals are born with a predisposition for “thinner” cartilage or slight misalignments in the joint (such as being bow-legged or knock-kneed), which can lead to early-onset arthritis.
Repetitive Stress: Jobs or hobbies that require frequent kneeling, heavy lifting, or high-impact pivoting can place “overuse” stress on the joint structures.
Metabolic Factors: Emerging research suggests that metabolic conditions, such as gout or even diabetes, can play a role in joint inflammation and the breakdown of knee tissues.
When to See a Specialist
If you notice persistent swelling, a “locking” sensation, or pain that interferes with your sleep or daily walks, it may be time to consult an orthopedic specialist. Early intervention—through physical therapy, lifestyle changes, or bracing—can often slow the progression of these conditions.
📍 Visit us at: APOLLO HOSPITALS, JUBILLE HILLS
MOHANS BONES & JOINTS CLINIC, MANIKONDA
📞 Book an Appointment: 9398664291
🌐 Website: www.bonesandjointsclinic.com