Knee Pain: Causes, Symptoms, Diagnosis & Treatment

Knee pain is one of the most common reasons people visit an orthopaedic clinic. It can affect people of all ages—from young athletes with sports injuries to elderly individuals with arthritis.

While some knee pain improves with rest, persistent pain should never be ignored because early treatment often prevents permanent joint damage.

Illustration showing the major structures of the knee joint.

Why Does the Knee Hurt?

The knee is the largest joint in the human body and bears almost the entire body weight while walking, climbing stairs, running, or standing.

Pain may arise from:

Bones
Cartilage
Ligaments
Meniscus
Tendons
Muscles
Synovial lining
Infection
Tumors (rare)

Common Causes of Knee Pain

Cause	Common Age Group	Typical Symptoms
Osteoarthritis	>50 years	Pain while walking, stiffness
Ligament Injury	Young adults	Swelling after twisting injury
Meniscus Tear	Young & Middle age	Locking or clicking knee
Patellofemoral Pain	Teenagers & Young adults	Pain while climbing stairs
Rheumatoid Arthritis	Any age	Multiple joint pain
Gout	Adults	Sudden severe pain with swelling
Infection	Any age	Fever, severe pain, swelling
Bone Tumor (Rare)	Any age	Persistent pain, night pain

Clinical Pearl

Knee pain that wakes you up at night, is associated with unexplained swelling, or persists despite rest should always be evaluated by an orthopaedic specialist.

Symptoms You Should Never Ignore

Seek medical attention if you experience:

Persistent pain lasting more than two weeks
Inability to bear weight
Significant swelling
Knee deformity
Fever with knee pain
Locking of the knee
Recurrent instability
Night pain
Pain after a major injury

How Doctors Diagnose Knee Pain

Your orthopaedic surgeon may recommend:

Clinical Examination

Walking assessment
Joint movement
Ligament testing
Meniscus examination
Alignment assessment

Imaging Tests

Investigation	Purpose
X-ray	Arthritis, fractures
MRI	Ligaments, cartilage, meniscus
CT Scan	Complex fractures
Ultrasound	Tendons & fluid collection
Bone Scan	Selected conditions

MRI helps evaluate ligaments, cartilage, menisci, and other soft tissue structures.

Treatment Options

Treatment depends entirely on the underlying cause.

Conservative Treatment

Many patients improve without surgery.

This may include:

Activity modification
Weight reduction
Physiotherapy
Ice application
Knee braces
Pain-relieving medications
Lifestyle changes

Injection Therapy

Selected patients may benefit from:

Corticosteroid injections
Hyaluronic acid injections
Platelet-Rich Plasma (PRP) in carefully selected cases

Your orthopaedic surgeon will decide whether these treatments are appropriate for your condition.

Surgical Treatment

Surgery may be recommended when conservative treatment fails or in cases of significant structural damage.

Common procedures include:

Arthroscopy
Ligament reconstruction (ACL/PCL)
Meniscus repair
Cartilage restoration procedures
Osteotomy
Partial knee replacement
Total knee replacement

Can Knee Pain Be Prevented?

Yes. Many cases can be prevented by following healthy habits.

✅ Maintain a healthy body weight

✅ Exercise regularly

✅ Strengthen thigh muscles

✅ Warm up before sports

✅ Wear proper footwear

✅ Avoid sudden increase in activity

Frequently Asked Questions

Is every knee pain due to arthritis?

No. Knee pain can result from ligament injuries, meniscus tears, tendon problems, infections, inflammatory diseases, or, rarely, bone tumors.

When is MRI necessary?

MRI is usually recommended when soft tissue injuries such as ligament or meniscus damage are suspected or when X-rays do not explain persistent symptoms.

Can physiotherapy cure knee pain?

Physiotherapy is highly effective for many conditions, particularly muscle weakness, early arthritis, and certain sports injuries. The outcome depends on the underlying diagnosis.

Do all patients with arthritis need knee replacement?

No. Most patients are initially treated with medications, exercise, weight management, and physiotherapy. Knee replacement is generally considered when pain and disability remain severe despite appropriate non-surgical treatment.

When Should You Visit Spica Hospitals?

Consult an orthopaedic surgeon if you have:

Persistent knee pain
Difficulty walking
Swelling after injury
Recurrent instability
Knee locking
Night pain
Suspected ligament injury

Early diagnosis often leads to simpler and more effective treatment.

Conclusion

Knee pain should never be ignored, especially when it interferes with daily life or continues despite rest. Modern orthopaedic care offers a wide range of treatments—from physiotherapy and medications to minimally invasive surgery and joint replacement—allowing most patients to return to an active lifestyle.

When Does Knee Replacement Become Necessary?
Arthritis vs. Ligament Injury – How to Tell the Difference
Best Exercises for Healthy Knees
Weight Loss and Knee Pain: How They Are Connected

Need expert advice?

Book an appointment with the Orthopaedics team at Spica Hospitals for a comprehensive evaluation and personalized treatment plan.

Knee Pain: Causes, Symptoms, Diagnosis & Treatment | Spica Hospitals