Causes and Risk Factors of Osteoarthritis

Osteoarthritis is the most common form of arthritis, affecting millions of people worldwide. It occurs when the protective cartilage on the ends of your bones wears down over time.

Although osteoarthritis can damage any joint in your body, the disorder most commonly affects joints in your hands, knees, hips and spine.

Osteoarthritis symptoms can usually be effectively managed. However, the underlying process cannot be reversed. Staying active, maintaining a healthy weight and other treatments may slow progression of the disease and help improve pain and joint function.

What are the Causes of Osteoarthritis? 

Osteoarthritis occurs when the cartilage that cushions the ends of bones in your joints gradually deteriorates. Cartilage is a firm, slippery tissue that permits nearly frictionless joint motion.

In osteoarthritis, the slick surface of the cartilage becomes rough. Eventually, if the cartilage wears down completely, you may be left with bone rubbing on bone which causes friction and pain if nerves are involved.

Factors that may increase your risk of osteoarthritis include:

  • Older age : The risk of osteoarthritis increases with age.
  • Sex : Women are more likely to develop osteoarthritis, though it isn’t clear why.
  • Obesity : Carrying extra body weight contributes to osteoarthritis in several ways, and the more you weigh, the greater your risk. Increased weight puts added stress on weight-bearing joints, such as your hips and knees. In addition, fat tissue produces proteins that may cause harmful inflammation in and around your joints.
  • Joint injuries : Injuries, such as those that occur when playing sports or from an accident, may increase the risk of osteoarthritis. Even injuries that occurred many years ago and seemingly healed can increase your risk of osteoarthritis.
  • Certain occupations : If your job includes tasks that place repetitive stress on a particular joint, that joint may eventually develop osteoarthritis.
  • Genetics : Some people inherit a tendency to develop osteoarthritis.
  • Bone deformities : Some people are born with malformed joints or defective cartilage, which can increase the risk of osteoarthritis.

Symptoms of Osteoarthritis

Osteoarthritis symptoms often develop slowly and worsen over time. Signs and symptoms of osteoarthritis include:

  1. Pain – Your joint may hurt during or after movement.
  2. Tenderness – Your joint may feel tender when you apply light pressure to it.
  3. Stiffness – Joint stiffness may be most noticeable when you wake up in the morning or after a period of inactivity.
  4. Loss of flexibility – You may not be able to move your joint through its full range of motion.
  5. Grating sensation – You may hear or feel a grating sensation when you use the joint.
  6. Bone spurs – These extra bits of bone, which feel like hard lumps, may form around the affected joint.

Diagnosis and Treatment of Osteoarthritis

Osteoarthritis can best be diagnosed in the hospital after the doctor might have run some laboratory investigations and other examinations in addition to your symptoms which you complain to the doctor. The doctor could request for an x-ray to take a better look at the bones. Do not hesitate to consult your doctor if you are having any symptoms of osteoarthritis for proper management.

The treatment of osteoarthritis can include pain relief with pain killers like paracetamol or stronger ones like opioids, depending on the intensity of the pain. Anti inflammatory drugs like NSAIDs and Corticosteroids can also be used to manage bone inflammation.

You may also be referred to a bone specialist (an orthopedic doctor) for more specific treatments and  other dietary and lifestyle changes may be suggested which you should adhere to.

Complications of Osteoarthritis

Osteoarthritis is a degenerative disease that worsens over time. Joint pain and stiffness may become severe enough to make daily tasks difficult. Some people are no longer able to work. When joint pain is this severe, doctors may suggest joint replacement surgery. Early treatment of osteoarthritis can help prevent its deterioration to a more severe and complicated state.

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