HOSPERIENCE RECOVERY EDUCATION

HOW TO MANAGE PAIN AND SWELLING

Pain and swelling are the two most common complaints after knee replacement surgery — and the two most manageable, when you have the right strategy. This guide covers evidence-based approaches to keeping both under control so you can focus on rehabilitation and getting back to your life.

Understanding why swelling happens

Swelling after knee replacement is caused by the body's inflammatory response to surgical trauma. Fluid accumulates in and around the joint as part of the healing process. While some swelling is unavoidable and even necessary, excessive or prolonged swelling can:

• Limit range of motion and delay physical therapy progress
• Increase pain levels
• Slow tissue healing
• Mask signs of complications

The goal isn't to eliminate swelling entirely — it's to keep it at a level that allows you to move, exercise, and heal effectively.

The RICE protocol: your foundation

Most orthopedic surgeons recommend a modified RICE approach in the early weeks:

• Rest: Balance activity with rest. Overexertion increases swelling; too much rest causes stiffness. Aim for short, frequent walks rather than long sessions.
• Ice (Cold Therapy): Apply cold for 15–20 minutes every 2–3 hours, especially after exercise or activity. Cold constricts blood vessels, reduces inflammation, and numbs pain receptors.
• Compression: Your surgeon may recommend compression stockings or a compression wrap to reduce fluid accumulation.
• Elevation: Keep your leg elevated above heart level as much as possible, especially in the first two weeks. Use a Hosperience elevating wedge pillow under your calf and ankle — not under the knee itself, which can cause a flexion contracture.

Cold therapy: getting it right

Not all cold therapy is equal. Ice bags are messy, melt quickly, and can cause ice burns if applied directly to skin. A purpose-designed Hosperience cold therapy knee wrap offers several advantages:

• Conforms to the knee's anatomy for consistent contact
• Maintains therapeutic temperature longer than ice bags
• Allows you to keep your leg elevated while icing
• Eliminates the risk of direct skin contact burns

Protocol: 15–20 minutes on, 20 minutes off. Always use a thin cloth barrier if using a gel pack. Never sleep with ice applied.

Pain management: a multimodal approach

Modern orthopedic care uses a multimodal pain management strategy — combining several lower-dose approaches rather than relying on a single high-dose medication. Your surgeon will prescribe a regimen, which may include:

• Acetaminophen (Tylenol): Effective for baseline pain control with minimal side effects when used as directed
• NSAIDs (ibuprofen, naproxen): Reduce inflammation as well as pain; take with food
• Nerve blocks: Often administered during surgery; may provide relief for 12–24 hours post-op
• Opioids: Reserved for breakthrough pain; use the minimum effective dose and taper as quickly as possible

Important: Take pain medications on a schedule in the first week, not just when pain becomes severe. Staying ahead of pain is easier than catching up to it.

Movement as medicine

It may seem counterintuitive, but gentle movement is one of the best things you can do for both pain and swelling. Walking promotes circulation, which helps clear inflammatory fluid from the joint. Your physical therapist will prescribe specific exercises — do them consistently, even when uncomfortable.

Ankle pumps (flexing and pointing your foot) are particularly effective at reducing lower-leg swelling and preventing blood clots. Do 10–20 repetitions every hour while awake.

Nutrition and hydration

Staying well-hydrated helps your kidneys process and eliminate inflammatory byproducts. Anti-inflammatory foods — fatty fish, leafy greens, berries, turmeric — may provide modest additional benefit. Avoid excessive sodium, which promotes fluid retention.

When to call your surgeon

Contact your care team if:

• Swelling is increasing rather than gradually improving after week 2
• Pain is worsening rather than improving
• You develop calf pain, redness, or warmth (DVT warning signs)
• Your incision shows signs of infection (increased redness, warmth, drainage, odor)
• You have a fever above 101.5°F (or as specified by your care team)

A complete recovery kit

The most effective recovery strategy treats cold therapy, pain management, and elevation as an integrated system — not three separate tasks. They work together: cold reduces inflammation, elevation drains fluid away from the joint, and staying ahead of pain with your prescribed medications keeps you comfortable enough to do your exercises. 

How Hosperience can help

Recovery doesn't end at discharge — and neither does our support. Hosperience™ curates hospital-grade recovery collections, designed around clinical protocols and delivered directly to your door, so you can focus on healing instead of scrambling for supplies. Shop recovery collections →

This article is for informational purposes only and does not constitute medical advice. Always follow the guidance of your surgical team regarding your specific recovery protocol.