Joint pain is one of the most common concerns patients face today, especially as they age. While many people loosely use the term “arthritis,” it actually refers to a broad group of conditions that affect the joints.
In this guide, Dr Abhijit Sen, Best Orthopaedic & Joint Replacement Surgeon and Sports Injury Specialist, explains everything you need to know about arthritis—with a special focus on osteoarthritis of the knee.
What is Arthritis?
Arthritis simply means inflammation of a joint, typically presenting with:
- Pain
- Swelling
- Stiffness
- Redness
There are multiple types of arthritis, including:
- Osteoarthritis (OA): Degenerative, age-related wear and tear
- Rheumatoid arthritis: Autoimmune condition
- Psoriatic arthritis: Associated with psoriasis
- Ankylosing spondylitis: Affects spine and large joints
- Post-traumatic arthritis: After injury
- Post-infective arthritis: After infections
Among these, osteoarthritis is the most common, especially affecting the knee joint.
Understanding Osteoarthritis (OA)
Osteoarthritis is a degenerative joint disease where the protective cartilage gradually wears down.
What happens inside the joint?
- Cartilage becomes thin and damaged
- Meniscus loses its shock-absorbing capacity
- Ligaments weaken over time
- Joint load becomes uneven, increasing stress
This leads to:
- Pain during movement
- Reduced mobility
- Joint stiffness and swelling
While OA is commonly seen in people over 60–80 years, it can also affect younger individuals due to:
- Injury
- Obesity
- Poor biomechanics
- Excessive joint stress
Why Does Osteoarthritis Develop?
The knee joint functions best when load is evenly distributed across all structures.
However, OA develops when:
- There is abnormal mechanical stress
- Cartilage cannot handle repetitive load
- Micro-damage accumulates over time
Inflammation adds to the symptoms, but the primary issue is mechanical degeneration, not just inflammation.
Stages of Osteoarthritis
Understanding the stage of OA helps determine the right treatment plan.
| Grade | Condition | Symptoms | Recommended Approach |
|---|---|---|---|
| Grade 1 | Early cartilage wear | Mild discomfort | Lifestyle correction |
| Grade 3 | Moderate damage | Pain, stiffness, reduced mobility | Medication, injections |
| Grade 4 | Severe damage | Chronic pain, deformity | Knee replacement surgery |
Treatment Options for Osteoarthritis
Treatment is always stage-specific and patient-specific.
1. Lifestyle Modification (Foundation of Treatment)
- Weight management
- Muscle strengthening exercises
- Avoiding excessive joint load
- Activity correction
This is the most important step in slowing disease progression.
2. Medications
Used primarily for symptom relief:
- Painkillers (short-term use)
- Anti-inflammatory drugs
They do not reverse cartilage damage but improve quality of life.
3. Injection-Based Therapie
a) Steroid Injections
- Reduce inflammation
- Provide short-term relief
- Repeated use may harm cartilage
b) Hyaluronic Acid Injections (Viscosupplementation)
- Improve joint lubrication
- Reduce pain for months to years
- More effective in early to moderate OA
4. Surgical Treatment: Knee Replacement
For advanced cases (Grade 4), knee replacement surgery is the most effective solution.
The procedure involves:
- Removing damaged joint surfaces
- Replacing them with highly durable prosthetic components
- Restoring alignment and smooth movement
Modern implants are designed to:
- Reduce friction
- Improve longevity
- Restore near-normal function
Patients often experience significant pain relief and improved mobility post-surgery.
Key Takeaways
- Osteoarthritis is primarily a mechanical degeneration problem, not just inflammation
- Early diagnosis and lifestyle changes can delay progression significantly
- Injections help manage symptoms but do not cure OA
- Knee replacement surgery is highly effective in advanced stages
When Should You Consult a Specialist?
You should seek expert advice if you experience:
- Persistent knee pain
- Difficulty walking or climbing stairs
- Swelling or stiffness
- Reduced joint movement
Early intervention can prevent long-term damage and improve outcomes.
About the Doctor
Dr Abhijit Sen is a leading Orthopaedic & Joint Replacement Surgeon and Sports Injury Specialist, known for his patient-centric approach and expertise in advanced knee treatments, including minimally invasive procedures and joint replacement surgeries.
Book a Consultation
If you’re experiencing joint pain or early signs of arthritis, timely treatment can make a significant difference.
Consult Dr Abhijit Sen today for a personalized treatment plan.