HomeMedicine & HealthDiseases & Conditions (continued)What is Osteoarthritis?
Medicine & Health·2 min·Updated Mar 14, 2026

What is Osteoarthritis?

Osteoarthritis

Quick Answer

A common joint disease, osteoarthritis occurs when the cartilage that cushions joints breaks down over time. This leads to pain, stiffness, and reduced mobility in the affected areas.

Overview

Osteoarthritis is a degenerative joint disease that primarily affects the cartilage, which is the smooth tissue that covers the ends of bones in a joint. When this cartilage wears away, bones can rub against each other, causing pain, swelling, and stiffness. This condition commonly affects weight-bearing joints such as the knees, hips, and spine, but it can also impact the hands and fingers. The process of osteoarthritis typically starts with minor damage to the cartilage, which can result from injury, overuse, or aging. As the cartilage continues to break down, the body may try to repair itself, but this can lead to the formation of bone spurs and further joint damage. For instance, a person who frequently participates in high-impact sports may experience osteoarthritis in their knees earlier than someone who leads a more sedentary lifestyle, highlighting how activities can influence the development of this condition. Understanding osteoarthritis is important because it can significantly impact a person's quality of life. Symptoms can make everyday tasks, such as walking or climbing stairs, challenging and painful. Managing osteoarthritis often involves a combination of lifestyle changes, physical therapy, and sometimes medication to help alleviate pain and improve function.


Frequently Asked Questions

Common symptoms include joint pain, stiffness, and swelling, especially after periods of inactivity or after using the joint. People may also experience a decreased range of motion and a grating sensation when moving the affected joint.
Diagnosis typically involves a physical examination, review of medical history, and imaging tests like X-rays or MRIs to assess joint damage. Doctors may also evaluate symptoms and their impact on daily activities.
Treatments for osteoarthritis can include lifestyle changes such as weight management and exercise, physical therapy, and medications to relieve pain and inflammation. In some cases, surgical options may be considered if other treatments do not provide relief.