Compression Therapy After Total Hip Replacement: What It Does and Why It Matters

Compression therapy is a common part of orthopaedic recovery and most people experience some form of it in hospital after a total hip replacement. What is less well understood is how to continue that therapy effectively at home, and why the type of compression you use makes a meaningful difference to your recovery.

What compression therapy does after surgery

After a hip replacement, the surrounding tissue is inflamed and flooded with fluid. Compression applies external pressure to the area, which reduces the space available for that fluid to accumulate and pushes excess fluid into the lymphatic system for removal. The result is reduced swelling, reduced tension in the joint, and faster return of movement.

In hospital, this is often managed with compression stockings and, in some facilities, intermittent pneumatic compression devices. The stockings are primarily for DVT prevention. The pneumatic devices actively pump fluid away from the joint with rhythmic pressure cycles. These are different things doing different jobs.

Static compression vs intermittent compression

Static compression, from stockings or a bandage, reduces swelling passively. It applies constant gentle pressure that slows fluid accumulation. Intermittent compression, from a pneumatic device, applies and releases pressure in cycles, mimicking the natural pumping action of the lymphatic system. 

This compression is gentle, but firm. It won't impact the wound and the cuffs can be loosened to ensure you're comfortable at all stages of your wound healing. 

Cold and compression together

Cold therapy reduces blood vessel diameter, slowing the rate at which inflammatory fluid enters the joint. Compression removes fluid that has already accumulated. Used together, they address both sides of the swelling equation: rate of accumulation and rate of removal. This is why clinical cold compression units, which combine both mechanisms in one device, produce better outcomes than either treatment used in isolation.

What to use at home after hospital discharge

Most NZ public hospital patients are discharged two to four days after hip replacement surgery. You will be at home for the bulk of your recovery, managing swelling without clinical equipment. A home cold compression unit bridges that gap. It circulates cold water through an anatomical cuff shaped for the hip and thigh, while simultaneously delivering intermittent compression that actively works to reduce swelling. Sessions of 20 minutes, two to four times per day, are the standard approach in the first six weeks.

Continuing stockings

Your surgeon will have given you guidance on how long to wear compression stockings after discharge. Follow this advice. Stockings are primarily clot prevention, not swelling management, and that function remains important even as the post-surgical swelling resolves.

The Isopress kit includes a hip cuff designed for post-surgical use at home. Cold and intermittent compression in one device.