Platelet-Rich Plasma (PRP) Injection

This guide explains Platelet-Rich Plasma (PRP) Injection in clear, patient-friendly terms and follows the key sections patients usually ask about before treatment.

Introduction

Platelet-Rich Plasma (PRP) Injection is a procedure used to address tendon or joint pain where biologic support is desired. It aims to relieve pain, improve stability or motion, and help you return to daily activities. Your surgeon will tailor the plan to your anatomy, symptoms, and goals.

What This Procedure Treats

This procedure treats tendon or joint pain where biologic support is desired. It may be considered when symptoms persist despite activity modification, therapy, or other non-surgical care.

Who Needs This Procedure

People with ongoing pain, instability, or functional limits that do not improve with conservative care may be candidates. A specialist confirms the diagnosis with exam and imaging and discusses whether this procedure is the best option.

Signs You May Need It

  • Persistent knee pain that limits daily tasks
  • Swelling or recurrent effusions
  • Catching, locking, or mechanical symptoms
  • Instability or the knee giving way
  • Reduced range of motion or stiffness

Goals and Expected Benefits

  • Reduce pain and inflammation
  • Improve stability, alignment, or motion
  • Restore function for work, exercise, and daily life
  • Protect joint structures when possible

Procedure Overview

Platelet-Rich Plasma (PRP) Injection delivers medication or biologic material into the joint to reduce pain and inflammation or to support healing. It is usually performed in a clinic setting with careful sterile technique.

Types and Technique Options

  • Landmark vs. image-guided placement based on anatomy and clinician preference.
  • Medication or biologic selection tailored to symptoms and goals.
  • Single injection vs. series depending on the product used.

Pre-Procedure Evaluation

Your team will review your medical history, perform a focused knee exam, and discuss symptoms and goals. This helps confirm the diagnosis and plan the safest, most effective approach.

Imaging and Diagnostic Tests

  • X-rays to assess alignment and joint space
  • MRI to evaluate soft tissues like cartilage, meniscus, and ligaments
  • CT or ultrasound when detailed bone or soft-tissue evaluation is needed
  • Lab tests if infection or systemic issues are suspected

How to Prepare

  • Follow pre-op instructions on eating, drinking, and medication use
  • Arrange transportation and at-home support
  • Set up a recovery space with ice, pillows, and assistive devices
  • Discuss any medical conditions or allergies with your care team

Medications to Stop or Continue

Your surgeon will advise which medications to pause, continue, or adjust. This often includes blood thinners, anti-inflammatories, and certain supplements. Do not stop prescribed medications without medical guidance.

Anesthesia Options

Depending on the procedure, anesthesia may be general, spinal, regional nerve block, or a combination. Your anesthesiologist will recommend the safest option for your health and comfort.

Step-by-Step: What Happens During the Procedure

  1. Sterile skin preparation and local numbing.
  2. Needle placement into the joint (often with image guidance).
  3. Delivery of the medication or biologic.
  4. Brief observation and post-procedure instructions.

Duration and Hospital Stay

This is usually performed as an outpatient clinic visit, and most people go home shortly afterward.

Pain Management Plan

Pain control is typically multi-modal and may include ice, elevation, prescribed medications, and activity modification. Your team will provide a plan that balances comfort with safe healing.

Risks and Possible Complications

  • Infection or wound problems
  • Bleeding or blood clots
  • Stiffness or loss of motion
  • Persistent pain or incomplete symptom relief
  • Injury to nearby nerves or blood vessels

Success Rates and Outcomes

Outcomes vary based on the condition treated, surgical technique, and rehabilitation. Many patients experience meaningful pain relief and functional improvement, especially when they follow the rehab plan.

Recovery Timeline

PhaseFocus
Same DayBrief rest, monitor symptoms, and follow after-care instructions.
Early DaysResume light activity as tolerated while tracking pain response.
OngoingPair with strengthening or activity modification as advised.

Rehabilitation and Physical Therapy

Rehabilitation restores motion, strength, and confidence. The program is tailored to the procedure and may progress from gentle mobility to strength and balance training.

Mobility, Walking, and Weight-Bearing Guidelines

Weight-bearing and walking aids depend on the procedure and tissue healing. Follow your surgeon's instructions to protect repairs and avoid setbacks.

Activity Restrictions and Return to Sports

Activity restrictions are phased. High-impact activity and sport are typically reintroduced only after strength, stability, and healing milestones are met.

Wound Care and Follow-Up Visits

Keep incisions clean and dry as instructed. Follow-up visits allow your surgeon to monitor healing, remove stitches if needed, and adjust the rehab plan.

When to Call the Doctor

  • Fever, chills, or increasing redness around the incision
  • Sudden increase in pain, swelling, or drainage
  • Calf pain or shortness of breath
  • Loss of sensation or new weakness

Alternatives to This Procedure

Alternatives may include activity modification, physical therapy, bracing, medications, injections, or other surgical options. Your surgeon will review which alternatives fit your diagnosis and goals.

Cost and Insurance Considerations

Costs vary based on setting, complexity, implants, and insurance coverage. Ask your provider about pre-authorization, out-of-pocket costs, and coverage details.

Questions to Ask Your Surgeon

  • Is this the best procedure for my diagnosis and goals?
  • What outcomes should I reasonably expect?
  • What are the key risks in my case?
  • What does my rehab plan look like?
  • When can I return to work, driving, and sports?

Frequently Asked Questions

Is Platelet-Rich Plasma (PRP) Injection always necessary?

Not always. The decision depends on symptoms, imaging, and how you respond to non-surgical care.

How is this procedure different from other options?

It targets a specific structure or problem in the knee. Your surgeon will explain why it fits your condition.

Will I need physical therapy?

Exercise and activity modification are often recommended to support longer-term improvement.

How soon will I feel relief?

Response time varies. Your clinician will outline what to expect and when to follow up.

What happens if symptoms return?

Follow-up evaluation can identify whether additional treatment, rehab changes, or another procedure is needed.

Summary and Key Takeaways

  • Platelet-Rich Plasma (PRP) Injection addresses tendon or joint pain where biologic support is desired.
  • Technique choices depend on anatomy, tissue quality, and goals.
  • Rehabilitation is essential for long-term success.
  • Discuss expectations and alternatives with your surgeon.