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When to Use Heat After Hip Replacement Surgery
Use cold in the first weeks after a hip replacement — it controls the swelling and pain that dominate early recovery, and heat on a fresh surgical site can make swelling worse. Heat earns its place later: applied before exercise or physical therapy, once swelling has settled, it loosens stiff muscles and helps your range of motion. Your surgeon’s guidance overrides any general rule.
After a hip replacement, “can I use a heating pad?” is one of the first questions patients ask — usually because something feels tight or sore. The honest answer depends on where you are in recovery. Reach for heat too early and you work against the swelling you’re trying to control; use it at the right time and it genuinely helps. For the full framework across all procedures, see our guide on heat vs. ice after surgery.
| Cold | Heat | |
|---|---|---|
| What it does | Calms inflammation, quiets pain, controls swelling | Increases blood flow, loosens stiff muscle before movement |
| When to use it | The default for the early weeks; after activity later on | Later in recovery, before exercise or PT, once swelling settles |
| Best for | Swelling and acute pain | Stiffness and range of motion |
| The risk after a hip replacement | Reduces sensation in the hip — don’t apply directly to skin | On a fresh, swollen site it can worsen swelling; unsafe over a numb hip |
| When in doubt early | ✅ The safe default | ❌ Wait |
Why cold comes first after a hip replacement
In the first days and weeks, swelling is the main obstacle — it drives pain and limits how well the new hip moves. Cold calms the inflammation that produces swelling and quiets pain signaling,[1] and when it’s paired with compression it’s designed to move fluid away from the site rather than letting it pool. The American Academy of Orthopaedic Surgeons advises using ice to reduce pain and swelling after a hip replacement — with the reminder that ice reduces sensation in the hip, so you shouldn’t apply it directly to the skin.[2]
Expect that swelling to run a long course: the AAOS notes moderate to severe swelling in the first few weeks, then mild to moderate swelling for three to six months after surgery.[2] That’s the stretch where cold, elevation, and compression do the most work.
When heat becomes useful
Once the acute swelling has settled, the problem shifts from swelling to stiffness — and that’s where heat belongs. The AAOS guidance is specific: apply heat before exercising to help with range of motion, using a heating pad or a hot, damp towel for 15 to 20 minutes.[2] Warming the tissue before your hip exercises or physical therapy makes it easier to move and stretch. A common pattern is heat to loosen up before exercises, then cold afterward to manage any swelling the activity stirs up.
The hip timeline, in plain terms
There’s no universal switch-over date, because it depends on your procedure and how your healing is going. But the shape of it is predictable: cold dominates the early weeks while swelling is heaviest, and heat becomes a useful pre-activity tool once swelling is clearly trending down. For most patients, hip precautions ease after about six to eight weeks,[2] which is generally the window where a “mostly cold” routine becomes “cold and some heat.” Your surgeon or physical therapist will set the timing for your recovery. For the week-by-week picture, see our hip replacement recovery timeline.
Where heat can do harm
This part matters. Applying heat to a fresh, swollen surgical site sends more blood to an area that’s already inflamed and can make the swelling worse — early on, heat works against you. It’s also risky over a hip where sensation is reduced, whether from the surgery itself or a nerve block, because you can’t reliably feel if a heating pad is too hot. When you’re early in recovery and unsure, choose cold.
Managing the early weeks
Whichever stage you’re in, the early weeks are about the same job: control swelling so you can do your rehab. Cold is the safe default then — and a cold-and-compression system does more than a bag of ice because it holds a steady temperature for hours and actively moves swelling away, rather than just cooling the surface. In a survey of 2,060 WRS Group patients using cold compression therapy, 75% reported real pain relief and 70% reported using fewer opioids.[3] Cold compression therapy is prescription-based, so it’s something to set up with your surgeon.
Getting set up
WRS Group provides cold compression therapy to surgical patients across the US. Most patients rent a cold therapy system for the early weeks, when swelling matters most. Ask your surgeon about cold compression therapy — many practices already work with us — or reach out to WRS Group directly.
Frequently asked questions
When can I use heat after a hip replacement?
Generally once the early swelling has settled — often after the first several weeks — and then mainly before exercise or physical therapy to loosen stiffness. The AAOS suggests heat before exercising to help range of motion. Cold stays the default while swelling is still heavy. Follow your surgeon’s timing.
Should I use heat or ice after a hip replacement?
Ice (or a cold compression system) early, to control swelling and pain — that’s the default for the first weeks. Heat later, once swelling settles, to loosen stiffness before movement. Don’t apply either directly to the skin, since sensation in the hip is reduced after surgery.
Can heat make hip swelling worse?
Yes — on a fresh, swollen surgical site, heat increases blood flow and can worsen swelling. Cold reduces swelling; heat is for loosening stiffness later in recovery, not for swelling.
How long does swelling last after a hip replacement?
The AAOS describes moderate to severe swelling in the first few weeks, then mild to moderate swelling for three to six months. Elevation, cold, and compression help manage it.
Is a heating pad safe after a hip replacement?
Later in recovery and before activity, a heating pad used for 15 to 20 minutes can help range of motion. Avoid it early, over a fresh incision, or over any area where sensation is reduced — and check your surgeon’s guidance first.
References
- Liang Z, Ding Z, Wang D, et al. Cryotherapy for Rehabilitation After Total Knee Arthroplasty: A Comprehensive Systematic Review and Meta-Analysis. Orthopaedic Surgery. 2024;16(12):2897–2915. PMID: 39402654.↩︎
- American Academy of Orthopaedic Surgeons (OrthoInfo). Activities After Hip Replacement. orthoinfo.org.↩︎
- WRS Cold Compression Scores — patient-reported outcomes survey, n = 2,060 (WRS Group internal data, 2026).↩︎