Hip or knee arthritis does not always mean joint replacement surgery is your only option. PRP injections are designed to harness your body’s natural healing response and may help reduce pain, improve function, and delay joint replacement for some patients. Learn who may benefit, what to expect, and where PRP fits into joint care.
What You Should Know About PRP for Hip and Knee Pain Relief
PRP is derived from your own blood. A small sample is drawn, then processed in a centrifuge to concentrate the platelets, which are packed with growth factors that play a key role in healing. That concentrated plasma is then injected directly into the affected joint. Because it uses your own biology, the risk of allergic reaction or rejection is minimal, making it an appealing option for patients who want to avoid pharmaceuticals or more invasive procedures.
How PRP Targets Hip and Knee Pain
Both the hip and knee are weight-bearing joints subject to significant daily stress. When arthritis, cartilage wear, or soft tissue injury disrupts normal joint function, inflammation becomes a persistent problem. PRP injections work by introducing a high concentration of healing proteins directly into that inflamed environment. The goal is to reduce inflammation, slow the progression of cartilage breakdown, and improve the joint's ability to function with less pain. Results vary, but many patients report meaningful improvement in mobility and discomfort lasting several months.
Who Is the Best Candidate for PRP Therapy?
PRP tends to work best for patients with mild to moderate joint degeneration rather than advanced, end-stage arthritis. If imaging shows significant bone loss or the joint space has narrowed considerably, PRP is unlikely to provide the structural relief needed. However, for patients who are not yet candidates for total joint replacement, or who want to delay surgery while managing symptoms, PRP can serve as a valuable bridge. A thorough evaluation, including X-rays and a detailed clinical assessment, helps determine whether this approach is appropriate.
PRP Versus Other Injection-Based Treatments
Corticosteroid injections are the most commonly used non-surgical option for joint pain and work quickly to reduce inflammation. However, their effects are typically short-lived and repeated use can potentially weaken surrounding tissue over time. Hyaluronic acid injections aim to lubricate the joint rather than heal it. PRP takes a different approach by attempting to stimulate the body's own repair process, which is why some patients find it offers longer-lasting relief than conventional injections.
What to Expect After a PRP Injection
Most patients experience some soreness at the injection site for a few days following the procedure. Improvement is usually gradual, often becoming noticeable over several weeks as the biological response takes effect. Unlike surgery, there is no significant downtime, though high-impact activity is typically discouraged immediately afterward. Patients considering more definitive treatment, such as robotic hip or knee replacement, often use this window to make informed decisions about their long-term care.
Frequently Asked Questions
How long does PRP last for knee pain or hip pain?
Results vary by patient and the extent of joint damage, but many people experience relief for six months to a year or longer. Those with milder arthritis tend to see more sustained benefits than patients with advanced joint deterioration.
Is PRP covered by insurance for hip or knee pain?
In most cases, PRP injections for joint pain are not covered by insurance and are considered an elective procedure. Patients should confirm costs directly with their provider and verify what their plan does or does not include before proceeding.
How many PRP injections will I need?
Many patients start with a single injection and reassess after several weeks. Some conditions may benefit from a series of two or three injections. The appropriate number depends on the severity of the condition and how well the patient responds to the initial treatment.
Can PRP prevent me from needing hip or knee replacement surgery?
PRP is not a cure for arthritis and cannot reverse structural joint damage. However, for patients with moderate symptoms, it may delay the need for surgery by managing pain and improving function over time. It is best viewed as part of a broader, individualized treatment plan.
Is PRP safe, and are there any serious side effects?
Because PRP is derived from the patient's own blood, serious adverse reactions are rare. The most common side effects are temporary soreness and mild swelling at the injection site. Infection is possible but uncommon when the procedure is performed under sterile conditions by an experienced provider.
PRP therapy represents a meaningful option in the spectrum of care between conservative treatment and surgery. For patients navigating the decision about their hip or knee, understanding all available options, including where PRP fits and where it falls short, leads to more confident and informed choices about long-term joint health.
AUTHOR: Dr. Christopher W. Palmer, DO – Orthopedic Surgeon & Robotic Total Joint Replacement Specialist
Dr. Christopher W. Palmer, DO is an orthopedic surgeon specializing in Mako robotic-assisted total joint replacement, minimally invasive joint procedures at Signature Medical Group. Recognized as a leading robotic total joint surgeon in Missouri, Dr. Palmer has performed more than 2,000 robotic joint replacement procedures and brings advanced, technology-driven orthopedic care to the St. Louis area through Signature Orthopedics.
Credentials & Education
Dr. Palmer earned his Doctor of Osteopathic Medicine degree from A.T. Still University/Kirksville College of Osteopathic Medicine. He completed his internship at Des Peres Hospital and his orthopedic surgery residency at Des Peres Hospital in affiliation with Saint Louis University and Cardinal Glennon Children’s Hospital. He also holds a bachelor’s degree in microbiology from Weber State University, providing a strong academic foundation in infectious disease research and surgical safety. He maintains multiple advanced certifications, including Advanced Trauma Life Support (ATLS), Advanced Cardiovascular Life Support (ACLS), Pediatric Advanced Cardiovascular Life Support (PALS), Basic Life Support (BLS), and National Institutes of Health Stroke Scale (NIHSS) certification. Dr. Palmer is an active member of the American Academy of Orthopaedic Surgeons (AAOS) and the American Association of Hip and Knee Surgeons (AAHKS), reflecting his commitment to advancing orthopedic care and staying current with the latest developments in hip and knee surgery.
Clinical Expertise
Dr. Palmer focuses on robotic-assisted total and partial joint replacement of the hip and knee, minimally invasive joint procedures, joint arthroscopy, and orthopedic trauma. His expertise in robotic technology allows for enhanced surgical precision, personalized implant positioning, and optimized recovery pathways.
In addition to his clinical practice, Dr. Palmer serves as a board member at Steri 3X and as a medical consultant for Convatec and Ethicon, contributing to advancements in infection prevention, wound care, and surgical innovation.
Medical Disclaimer: This information is for educational purposes only and does not constitute medical advice. For diagnosis and treatment recommendations, please consult with Dr. Palmer or another qualified orthopedic specialist.
