Does PRP injection help with knee pain?

Platelet-rich plasma is prepared from a sample of your blood and injected into the painful area. The aim is to concentrate platelets and signalling proteins near irritated or damaged tissue. Knee pain can come from osteoarthritis, a tendon problem, a cartilage injury, a ligament injury, bursitis, or referred pain, so the same injection may not be appropriate for every diagnosis.

PRP is generally considered a symptom-management option rather than a way to rebuild a severely damaged joint. Improvement, when it occurs, may be gradual. The injection can also cause temporary soreness, swelling, or stiffness. A clinician should confirm the pain source before recommending it.

Arrange an assessment if knee pain limits walking, stairs, sleep, or exercise. The clinician may examine your range of motion, strength, tenderness, and stability, and may use imaging when the findings suggest cartilage, bone, or internal-structure damage. Discuss physiotherapy, activity changes, strength work, and other non-injection options alongside PRP.

Before treatment, ask which structure is being targeted, how many appointments may be considered, how activity should be modified, and what alternatives fit your diagnosis. Tell the clinician about medicines, bleeding problems, infection, or a recent procedure.

Seek urgent medical care after a knee injury if you cannot bear weight, the knee looks deformed, it locks, or swelling appears suddenly. Contact a clinician promptly for fever, spreading redness, marked warmth, drainage, or rapidly worsening pain after an injection, because these can indicate a complication needing assessment.

What is the likely source of my knee pain? Is PRP reasonable for that diagnosis? What improvement would count as meaningful, and how will we review it? What rehabilitation plan should accompany the injection?