Periarticular Injection Technique to Enhance Pain Relief After Knee Arthroplasty.

Introduction: Currently, a popular form of pain control following total knee arthroplasty is the use of periarticular injections; how the medications are injected is a critical step in the efficacy of this modality.

Step 1 Setup: The setup includes the injection fluid and two control syringes with a 22-gauge needle.

Step 2 Inject The Lateral Femoral Periosteum: Inject around the femur before placing the implants.

Step 3 Inject The Posterior Aspect Of The Capsule: This is another area of rich innervation that needs to be injected carefully.

Step 4 Inject The Medial Periosteum: Use a similar technique of slow small-volume injections, watching for the periosteal wheal or elevation off the bone.

Step 5 Inject The Capsule And Skin: Include the lateral gutter and proximal extensor mechanism as well as around the patella, with minimal injection into the skin.

Results: Careful injection technique improves the outcome of periarticular injections for pain control. Indications ContraindicationsPitfalls & Challenges.