PRP, GFC or Gel Injection for Knee Arthritis: Which One Makes Sense?A practical OPD guide for knee pain, reduced knee gap, and injection suitability.

First, why is the knee painful?

In OPD, we first try to understand the pain pattern. Many patients say:

• "knee gap kam ho gaya"
• pain while climbing stairs
• stiffness after sitting
• swelling after walking
• difficulty sitting cross-legged
• pain while getting up from a chair
• trouble walking in the park or market

These symptoms often come from arthritis. But knee pain can also come from meniscus tear, ligament injury, kneecap tracking, hip or spine pain, or inflammation.

So the first step is not choosing PRP, GFC, or gel. The first step is: examination plus X-ray review.

Gel injection

Gel injection usually means hyaluronic acid or viscosupplementation. It is used to reduce friction and improve comfort inside the knee joint. Some patients with early or moderate arthritis feel better with walking or stairs after gel injection.

But gel is less useful when arthritis is very advanced, the leg is badly bowed, or walking is already severely limited.

Simple point: gel may reduce symptoms, but it does not rebuild lost cartilage.

PRP injection

PRP is prepared from your own blood. The platelet-rich part is injected into the knee. PRP is usually considered when arthritis is early or moderate and pain is affecting daily life.

It is not magic. It does not guarantee cartilage repair.

If PRP is chosen, it still needs the basics: exercise, weight and load control, sensible activity, and follow-up.

GFC injection

GFC is also prepared from your blood, but the processing method is different from PRP.

Patients often ask, "Is GFC better than PRP?"

A better question is: is a blood-derived injection suitable for my knee at this stage?

That depends on your X-ray, swelling, pain pattern, activity level, and examination.

When injection can be useful

Injection can be considered when:

• arthritis is early or moderate
• pain affects walking, stairs, or daily work
• X-ray findings match the symptoms
• the knee is not badly deformed
• medicines and exercises have not helped enough
• you are ready to continue rehab and follow-up

For many Delhi patients, the goal is practical: climbing home stairs, walking in the colony park, standing in the kitchen, going to work, or reducing repeated painkiller use.

When injection may not help enough

Injection may not be the best use of time or money if:

• arthritis is advanced
• the knee is bone-on-bone
• walking distance is very poor
• the leg is significantly bent
• pain is present even at rest
• previous injections gave only short relief

In this situation, it may be more useful to discuss knee replacement timing instead of repeating injections. That does not mean surgery is forced. It means you should understand the realistic options.

Do you need MRI before injection?

Not always.

For knee arthritis, a standing X-ray and clinical examination are often more useful than MRI. MRI is considered when symptoms suggest meniscus tear, ligament injury, unusual swelling, or pain that does not match the X-ray.

We should not treat the MRI report alone. We treat the patient.

What should you bring?

Please bring:

• old knee X-rays
• MRI report if already done
• previous prescriptions
• physiotherapy notes
• diabetes, BP, thyroid, or blood thinner details
• details of any previous injection
• one family member if they help with decisions

This helps avoid repeat tests and makes the plan clearer.

Do not wait if these happen

Seek urgent care if you have:

• fever with hot swollen knee
• sudden severe swelling
• inability to bear weight after injury
• major fall or deformity
• redness and severe tenderness
• calf swelling or breathlessness

These are not routine arthritis symptoms.

So which injection is right?

The safest answer is not "PRP is best" or "gel is best".

The safest answer is: choose after examination, X-ray review, and a clear discussion of what injection can and cannot do.